CCNA v4 - E4 - Module M odule 1 (100%) Post by: Admin at 11:30 PM Lables: CCNA4 CCNA4,, CCNA4 Chapter 1
http://p4s-ccna.blogspot.com http://testccna-4u.blogspot.com 1. Which statement about WAN protocols is correct? Most WAN protocols use HDLC or a variant of HDLC as a framing mechanism. 2. Which statement is true of the functionality of the layers in the hierarchical network model? The distribution layer aggregates WAN connections at the edge of the campus. 3. Which WAN technology uses a fixed payload of 48 bytes and is transported across both switched and permanent virtual circuits? ATM 4. A U.S. company requires a WAN connection used only to transfer sales data from indiv idual stores to the home office. All transfers will occur a fter business hours. The required bandwidth for this connection is estimated to be less than 38 kbps. Which type of connection requires the least investment for this company? analog dialup 5. What is an adv antage of packet-switched technology over circuit-switched technology? Packet-switched networks can efficiently use multiple routes inside a service provider network. 6. Which statement is true about data connectivity between a customer and a service provider? The segment between the demarcation point and the central office is known as the "last mile." 7. What are two advantages of an analog PSTN WAN connection? (Choose two.) low cost availability 8. What can cause a reduction in available bandwidth on a cable broadband connection? number of subscribers 9. For digital lines, which device is used to establish the communications link between the customer equipment and the local loop? CSU/DSU 10. At which two layers of the OSI model does a WAN operate? (Choose two.) Physical Layer Data Link Layer 11. A company needs a WAN connection that is capable of transferring voice, video, and data at a minimum data ra te of 155 Mbps. Which WAN connection is the best choice? ATM 12. Which statement is true about the differences between a WAN and a LAN? A WAN often relies on the services of carriers, such as telephone or cable companies, but a LAN does not.
13. Which networking device is typically used to concentrat e the dial-in an d dial-out traffic of multiple users to and from a network? access server 14. Why is the call setup time of a circuit-switched WAN implementation considered a drawback? Data cannot be transferred until a circuit has been established. 15. What three terms are associated with ISDN PRI? (Choose three.) circuit switching data bearer channels time-division multiplexing 16. Which three features are identified with Fr ame Relay connections? (Choose three.) CIR DLCI PVC 17. Which two devices are commonly used as da ta communications equipment? (Choose two.) modem CSU/DSU 18. Which packet-switched WAN technology offers high-bandwidth connectivity capable of managing data, voice, and video all on the same infrastructure? metro Ethernet 19. Which three WAN devices can be found in the cloud? (Choose three.) ATM switches core routers Frame Relay switches 20. Which switching type will allow the communication devices in the provider network to be shared and only allocated to an individual subscriber during data transfer? dedicated switched lines 21. What type of connectivity is established when VPNs are used from the remote site to the private network? tunnels 22. Which term describes a device that will put data on the local loop? DCE
CCNA v4 - E4 - Module M odule 2 (100%) Post by: Admin at 12:16 AM Lables: CCNA4 CCNA4,, CCNA4 Chapter 2 1. Refer to the exhibit. What can be concluded about the function of the Seria l 0/0/0 interface on the router after the commands are entered? The serial link will be closed if the number of received packets at the destination node falls below 90 percent of the packets that are sent. 2. Refer to the exhibit. While troubleshooting a serial interface, a technician enters the command show interface serial 0/0/0 . If the interface is in DCE mode, what two problems are likely to cause the indicated problem? (Choose two.) two.) The remote CSU or DSU has failed. A timing problem has occurred on the cable. 3. Refer to the exhibit. What statement is true regarding the output shown? The PAP passwords did not match, so the routers are trying CHAP authentication. 4. Why are serial connections preferred over parallel connections for long tra nsmission lengths? Parallel connections are subject to clock skew a nd to crosstalk between wires. 5. Which two statements are true about time-division multiplexing (TDM)? (Choose two.) Multiple sources can transmit over a single channel. Original data streams must be reconstructed at the destination. 6. Which authentication protocol can be spoofed to allow playback attacks? PAP 7. What function do Network Control Protocols provide for a PPP connection? to allow multiple Layer 3 protocols to operate over the same physical link 8. Refer to the exhibit. Router R 1, the DCE device, has just been configured for PPP encapsulation with authentication. What series of commands will allow another router, the DTE device, to communicate over its serial 0/0/0 interface to router R1? Router(config)# hostname R3 R3(config)# R3(config)# username R1 password Cisco R3(config)# R3(config)# interface Serial 0/0/0 0/0/0 R3(config-if)# R3(config-if)# encapsulation ppp R3(config-if)# ip address 172.16.3.3 255.255.255.0 R3(config-if)# R3(config-if)# ppp authentication chap 9. What advantage does PPP have over HDLC for serial communications? It supports authentication 10. Which PPP configuration configuration option can be used to establish load balancing ove r the interfaces of a router? multilink 11. Which three statements are correct about HDLC encapsulation? (Choose three.) HDLC implementation in Cisco routers is proprietary. HDLC is the default serial interface encapsulation on Cisco routers. HDLC uses frame delimiters to mark the beginnings and ends of frames.
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connected to serial 0/0/0. What What is the reason for this? The interface has been administratively shutdown with the shutdown command. 13. Refer to the exhibit. What statement is true regarding the o utput shown? Data is able to flow across this link. 14. Which serial communications DTE/DCE interface standard is used to provide high-speed connectivity of up to 52 Mbps between LANs and is found on many high-end Cisco routers? EIA/TIA-612/613 (HSSI) 15. What does the demarcation point represent in data communication physical circuits? physical point at which the public network ends and the private customer network begins 16. Which three statements are true regarding LCP? (Choose three.) It is responsible for negotiating link establishment. It terminates the link upon user request or the expiration of an inactivity timer. It can test the link to determine if link quality is sufficient to bring up the link. 17. Refer to the exhibit. Which two statements are true regarding the output shown? (Choose two.) The router has agreed on IP parameters. The router has negotiated LCP successfully. 18. Refer to the exhibit. Which statement is true about PPP operation? Both the li nk-establishment and network-layer phase completed successfully. 19. Which three statements correctly describe PPP a uthentication? (Choose three.) PAP sends passwords in clear text. CHAP uses a challenge/response that is based on the MD5 hash algorithm. CHAP uses repeated challenges for verification. 20. Which two options can LCP negotiate? (Choose two.) link quality authentication 21. Refer to the exhibit. On the basis of the show interface Serial0/0 output, how many NCP sessions have been established? two
CCNA v4 - E4 - Module M odule 3 (100%) Post by: Admin at 2:33 PM Lables: CCNA4 CCNA4,, CCNA4 Chapter 3 1. Which best describes the benefit of using Frame Relay as opposed to a lea sed line or ISDN service? Customers only pay for the local loop and the bandwidth they purchase from the network provider. 2. Which statement about Frame Relay subinterfaces is correct? Point-to-point subinterfaces act like leased lines and elimi nate split-horizon routing i ssues. 3. What best describes the use of a data-link connection identifier (DLCI)? locally significant address used to identify a virtual circuit 4. What is created between two DTEs in a Frame Relay network? virtual circuit 5. Which two items allow the router to map data link layer addresses to network layer addresses in a Frame Relay network? (Choose two.) Inverse ARP LMI status messages 6. Refer to the exhibit. What can be known about the configuration of router R1 from the output? The command encapsulation frame-relay ie tf has been used on the Serial 0/0/0 interface. 7. Refer to the exhibit. Which two outcomes occur from the configuration shown? (Choose two.) The router will use DLCI 22 to forward data to 10.1 10.1.1.1 .1.1.. Frames arriving on interface serial 0/0/0 of RT_1 will have a data link layer address of 22. 8. Refer to the exhibit. What effect does the point-to-point configuration on subinterface S 0/0.110 0/0.110 have on the operation of the router? It eliminates split horizon issues without increasing the likelihood of routing loops. 9. Refer to the exhibit. You are a network administrator who has been tasked with completing the Frame Relay topology that interconnects two remote sites. Router HQ belongs to both the 172.16.1.0/24 and 172.16.2.0/24 subnets with IP addresses of 172.16.1.3 and 172.16.2.3 respectively. Traffic between R1 and R2 must travel through HQ first. How should the serial interface on HQ be configured to complete the topology? two point-to-point subinterfaces 10. Refer to the exhibit. What can be determined about the configuration o f router R1 from the exhibited output? The LMI type for the Serial 0/0/ 0/0/0 0 interface has been left to its default configuration. 11. Refer to the exhibit. What can be determined about the Frame Relay switch from the output shown? It is experiencing congestion. 12. Refer to the exhibit. Which two statements are true give n the output shown? (Choose two.) The local DLCI number i s 401. Inverse ARP is being used on this connection.
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will be used to send the ping? 110 14. Refer to the exhibit. Router R1 has been configured for Frame Relay connectivity to routers R2 and R3. Which set of configuration options for routers R2 and R3 would provide each router connectivity to R1? R2(config)# interface serial0/0/1.201 point-to-point R2(config-if)# R2(configif)# frame-relay interface-dlci 201 R3(config)# interface serial0/0/1.301 point-to-point R3(config-if)# R3(configif)# frame-relay interface-dlci 301 15. Refer to the exhibit. Which statement explains why the Frame Relay connection between R1 and R2 is failing? The frame-relay map commands are using incorrect DLCIs. 16. Refer to the exhibit. Router R2 is part of a Frame Relay network that uses OSPF for IP routing. After the commands that are shown are entered, R2 will not exchange OSPF information correctly. What is the likely cause? The frame-relay map command requires the broadcast keyword. 17. Refer to the exhibit. When troubleshooting a Frame Relay connection, an administrator entered the show interfaces s0/0 command and received the output shown in the exhibit. What are two probable reasons for this problem? (Choose two.) The router is not configured for the same Frame Relay PVC as the switch. The LMI type on the Frame Relay switch is NOT ANSI. 18. Refer to the exhibit. What can be determined from the output? Serial 0/0/0 has been configured with an DLCI of 201. 19. What consideration must be taken into account if RIP is used on Frame Relay multiaccess networks? To forward routing updates, address-to-DLCI mapping must be done via the use of the frame-relay map command coupled with the broadcast keyword. 20. Which three actions does a Frame Relay switch perform when it detects an excessive build-up of frames in its queue? (Choose three.) drops frames from the queue that have the DE bit set sets the FECN bit on all frames it receives on the congested link sets the BECN bit on all frames it places on the congested link 21. What two methods does Frame Relay technology use t o process frames that contain e rrors? (Choose two.) Frame Relay services depend on the upper layer protocols to handle error recovery. The receivi ng device drops any frames that contain errors without notifying the sender. 22. Refer to the exhibit. Router R1 has been configured for Frame Relay connectivity to routers R2 and R3. What configuration option should be configured on the R2 and R3 serial interfaces in order for all routers to ping each o ther successfully? R2(config-i f)# frame-rel ay map ip 10.1.1.1 201 broadca st R2(config-if)# frame-rela y map ip 10.1.1.3 201 broadca st R3(config-i f)# frame-re lay map ip 10.1.1.1 10.1.1.1 301 broadca st R3(config-i f)# frame-re lay map ip 10.1.1.2 301 broadcast
CCNA v4 - E4 - Module 4 (100%) Post by: Admin at 7:34 PM Lables: CCNA4 CCNA4,, CCNA4 Chapter 4
http://p4s-ccna.blogspot.com http://testccna-4u.blogspot.com 1. What is the best defense for protecting a network from phishing exploits? Schedule training for all users. 2. What are three characteri stics of a good security policy? (Choose three.) It defines acceptable and unacceptable use of network resources. It communicates consensus and defines roles. It defines how to handle security incidents. 3. The Cisco IOS image naming convention allows identification of different versions and capabilities of the IOS. What information can be gained from the filename c2600-d-mz.12 c2600-d-mz.121-4? 1-4? (Choose (Choose two.) The software is version 12.1, 4th revision. The IOS is for the Cisco 2600 series hardware platform. 4. Refer to the exhibit. What is accomplished when both commands are configured on the router? The commands disable the services such as echo, discard, and chargen on the router to prevent security vulnerabilities. 5. Which two conditions should the network administrator verify before attempting to upgrade a Cisco IOS image using a TFTP server? (Choose two.) Verify connectivity between the router and TFTP server using the ping command. Verify that there is enough flash memory for the new Cisco IOS image using the show flash command. 6. Which two statements regarding preventing network attacks are true? (Choose two.) Physical security threat mitigation consists of controlling access to device console ports, labeling critical cable runs, installing UPS systems, and providing climate control. Changing default usernames and passwords and disabling or uninstalling unnecessary services are aspects of device hardening. 7. An IT director has begun a campaign to remind users to avoid opening e-mail messages from suspicious sources. Which type of attack is the IT director trying to protect users from? virus 8. Users are unable to access a company server. The system logs show that the server is operating slowly because it is receiving a high level of fake requests for service. Which type of attack is occurring? DoS 9. Refer to the exhibit. What is the purpose of the "ip ospf message-digest-key message-digest-key 1 md5 cisco" statement in the configuration? to specify a key that is used to authenticate routing updates 10. Which two statements define the security risk when DNS services are ena bled on the network? (Choose two.) The basic DNS protocol does not provide authentication or integrity assurance. The router configuration does not provide an option to set up main and backup DNS servers. 11. Which two statements are true about network attacks? (Choose two.)
A brute-force attack searches to try ev ery possible password from a combination of chara cters. Devices in the DMZ should not be fully trusted by internal devices, and communication between the DMZ and internal devices should be authenticated to prevent attacks such as port redirection. 12. Refer to the exhibit. A network administrator is trying to configure a router to use SDM, but it is not functioning correctly. What could be the problem? The privilege level of the user is not configured correctly. 13. Refer to the exhibit. The network administrator is trying to back up the Cisco IOS router software and receives the output shown. What are two possible reasons for th is output? (Choose two.) The router cannot connect to the TFTP server. server. The TFTP server software has not been started. 14 Which two statements are tr ue regarding network security? (Choose two.) Both experienced hackers who are capable of writing their own exploit code and inexperienced individuals who download exploits from the Internet pose a serious threat to network security. Protecting network devices from physical damage caused by water or electricity is a necessary part of the security policy. 15. The password recovery process begins in which operating mode and using what type of connection? (Choose two.) ROM monitor Direct connection through the console port 16. Which two objectives must a security policy accomplish? (Choose two.) Document the resources to be protected Identify the security objectives of the organization 17. Which statement is true about Cisco Security Device Manager (SDM)? SDM can be run from router memory or from a PC. 18. Which step is required to recover a lost enable password for a router? Set the configuration register to bypass the startup configuration. 19. Refer to the exhibit. Security Device Manager (SDM) is installed on router R1. What is the result of opening a web browser on PC1 and entering the URL https://192.168.10.1? The SDM page of R1 appears with a dialog box that requests a username and password. 20. Intrusion detection occurs at which stage of the Security Wheel? Monitoring 21. Refer to the exhibit. Security Device Manager (SDM) has been used to configure a required level of security on the router. What would be accomplished when the SDM applies the next step on the security problems that are identified on the router? SDM will reconfigure the services that are marked in the exhibit as “fix it” to apply the suggested security changes. 22 What are two benefits of using Cisco AutoSecure? (Choose two.) It gives the administrator detailed control over which services are enabled or disabled. It allows the administrator to configure security policies without having to understand all of the Cisco IOS software features.
CCNA v4 - E4 - Module M odule 5 (100%) Post by: Admin at 1:14 PM Lables: CCNA4 CCNA4,, CCNA4 Chapter 5
http://p4s-ccna.blogspot.com http://testccna-4u.blogspot.com 1. Refer to the exhibit. What will be the effect of the configuration tha t is shown? Users attempting to access hosts in th e 192.168.3 192.168.30.0/ 0.0/24 24 network will be required to telnet to R3. 2. Which three parameters can ACLs use to filter traffic? (Choose three.) protocol suite source address destination address 3. Refer to the exhibit. How does this a ccess list process a packet with the source address 10.1.1. 10.1.1.1 1 and a destination of 192.168.10.13? It is dropped because it does not match any of the items in the ACL. 4 .Which two statements are correct a bout extended ACLs? (Choose (Choose two) Extended ACLs evaluate the source and destination addresses. Port numbers can be used to add greater definition to an ACL.
http://p4s-ccna.blogspot.com http://testccna-4u.blogspot.com 5. Where should a standard access control list be placed? close to the destination 6. Which three statements describe ACL processing of packets? (Choose three.) An implicit deny any rejects any packet that does not match any ACL statement. A packet can either be rejected or forwarded as directed by the statement that is matched. Each statement is checked only until a match is detected or until the end of the ACL statement list. 7. Refer to the exhibit. How will Router1 treat traffic matching the time-range requirement of EVERYOTHERDAY? Telnet traffic entering fa0/0 from 10.1.1.254/24 destined to the 172.16.1.0/24 network is permitted. 8. Which two statements are true regarding the following extended ACL? (Choose two.) access-list 101 deny tcp 172.16.3.0 0.0.0.255 any eq 20 access-list 101 deny tcp 172.16.3.0 0.0.0.255 any eq 21 access-list 101 101 permit ip any any FTP traffic originating from network 172.16.3.0 172.16.3.0/24 /24 is denied. Web traffic originat ing from 172.16.3.0 172.16.3.0 is permitted. 9. Which two statements are true regarding the significance of the access control list wildcard mask 0.0.0.7? (Choose two.) The first 29 bits of a given IP address will be ignored. The last 3 bits of a given IP address will be checked. checked. 10. Refer to the exhibit. When creating a n extended ACL to deny traffic from the 192.168 192.168.30. .30.0 0 network destined for the Web serv er 209.165.201 209.165.201.30, .30, where is the best location for a pplying the ACL? R3 Fa0/0 inbound
11. How do Cisco standard ACLs filter traffic? by source IP address 12. Which three items must be configured before a dynamic ACL can become active on a router? (Choose three.) extended ACL authentication Telnet connectivity 13. A network administrator needs to allow traffic through the firewall router for sessions that originate from within the company network, but the administrator must block traffic for sessions that originate outside the network of the company. What type of ACL is mo st appropriate? reflexive 14. Which statement about standard ACLs is true? They should be placed as close to t he destination as possible. 15. Which benefit benefit does an extended ACL offer over a standard ACL? In addition to the source address, an extended ACL can also filter on destination address, destination port, and source port. 16. The following commands were entered on a router: Router(config)# access-list 2 deny 172.16.5.24 Router(config)# access-list access-list 2 permit a ny The ACL is correctly applied to an interface. What can be concluded about this set of commands? All nodes on the 172.16.0.0 172.16.0.0 network will be denied a ccess to other ne tworks. 17. Refer to the exhibit. The administrator wishes to block web traffic from 192.168.1 192.168.1.50 .50 from reaching the default port of the web service on 192.168. 192.168.3.30. 3.30. To do this, the a ccess control list name is applied inbound on the router R1 LAN interface. After testing the list, the administrator has noted that the web tra ffic remains successful. Why Why is web traffic reaching t he destination? The range of source addresses specified in line 10 does not include host 192.168.1.50. 18. Which feature will require the use of a named ACL rather than a numbered ACL? the ability to edit the ACL and add additional statements in the middle of the list without removing and re-creating the list 19. By default, default, how is IP tr affic filtered in a Cisco router? permitted in and out of all interfaces 20. Refer to the exhibit. The network admini strator applied an ACL ou tbound on S0/0/0 on router R1. Immediately after the administrator did so, the users on network 172.22.3 172.22.30.0/ 0.0/24 24 started complaining that they have intermittent access to the resources available on the server on the 10.10.0.0/16 network. On the basis of the configuration that is provided, what is the possible reason for the problem? The ACL permits the IP packets for users on network 172 172.22. .22.30.0 30.0/24 /24 only during a specific time range. 21. Interface s0/0/0 s0/0/0 already has an IP ACL a pplied inbound. What happens when the network administrator attempts to apply a second inbound IP ACL? The second ACL is applied to the interface, replacing the first.
22. A technician is creating an ACL and needs a way to indicate only the subnet 172.16.16 172.16.16.0/2 .0/21. 1. Which combination of network address and wildcard mask wi ll accomplish the desired task? 172.16.16.0 0.0.7.255 23. Refer to the exhibit. Which statement is true about ACL 110 if ACL 110 is applied in the inbound direction on S0/0/0 of R1? It will permit any TCP traffic that originated from network 172.22.10. 172.22.10.0/2 0/24 4 to return inbound on the S0/0/0 interface. 24. Refer to the exhibit. ACL 120 is configured inbound on the serial0/0/0 interface on router R1, but the hosts on network 172.11.10.0/24 are able to telnet to network 10.10.0.0/16. On the basis of the provided configuration, what should be done to remedy the problem? Apply the ACL outbound on the serial0/0/0 interface on router R1. 25. Which two statements are true regarding na med ACLs? (Choose two.) Names can be used to help identify the function of the ACL. Certain complex ACLs, such as reflexive ACLs, must be defined with named ACLs.
CCNA v4 - E4 - Module 6 (100%) Post by: Admin at 12:04 PM Lables: CCNA4 CCNA4,, CCNA4 Chapter 6 1. Which two Layer 1 requirements are outlined in the Data-over-Cable Service Interface Specification (DOCSIS)? (DOCSIS)? (Choose two.) channel widths modulation techniques 2. Which is an example of symmetric-key encryption? pre-shared key 3. Which two statements are v alid solutions for a cable ISP to reduce congestion for u sers? (Choose two.) allocate an additional channel subdivide the network to reduce users on each segment 4. While monitoring traffic on a cable network, a technician notes that data is being transmitted at 38 MHz. Which statement describes the situation observed by the technician? Data is being transmitted from the subscriber to the headend. 5. After conducting research to learn about common remote connection options for teleworkers, a network administrator has decided to implement remote access over broadband to establish VPN connections over the public Internet. What is the result of this solution? The connection has increased security and reliable connectivity. Users need a remote VPN router or VPN client software. 6. Data confidentiality through a VPN is achiev ed through which two methods? (Choose two.) encryption encapsulation 7. Data confidentiality through a VPN can be enhanced through the use of which three encryption protocols? (Choose three.) AES DES RSA 8. What two protocols provide data authentication a nd integrity for IPsec? (Choose two.) AH ESP 9. A technician has been asked to configure a broadband connection for a teleworker. The technician has been instructed that a ll uploads and downloads for the connection must use existing phone lines. Which broadband technology should be used? DSL 10. What are the three mai n functions of a secure VPN? (Choose three.) authentication data confidentiality data integrity 11. A company is using WiMAX to prov ide access for teleworkers. What home equipment must the company provide at the teleworker's site? a WiMAX receiver
. (Choose two.) digital certificates smart cards 13. Which two statements about DSL are true? (Choose two.) local loop can be up to 3.5 miles (5.5km) (5.5km) user connections are aggregated at a DSLAM located at the CO 14. Which two features can be associated with the Worldwide Interoperability for Microwave Access (WiMAX) telecommunication technology? (Choose two.) covers area s as large as 7,500 7,500 square kilometers connects directly to the Internet through high-bandwidth connections 15. Refer to the exhibit. All users hav e a legitima te purpose and the necessary persissions to access the Corporate network. Based on the t opology shown, which locations are able to establish VPN connectivity with the Corporate network? All locations can support VPN connectivity. 16. Which statement describes cable? Delivering services over a cable network requires downstream frequencies in the 50 to 860 MHz range, and upstream frequencies in the 5 to 42 MHz range. 17. Which two protocols can be used to encapsulate traffic that is trav ersing a VPN tunnel? (Choose two.) IPsec PPTP 18. Refer to the exhibit. A teleworker is connected ov er the Internet to the HQ Office. What type of secure connection can be established between the te leworker and the HQ Office? a remote-access VPN 19. Refer to the exhibit. A VPN tunnel has been established between the HQ Office and the Branch Office over the public Internet. Which three mechanisms are required by the devices on each end of the VPN tunnel to protect the data from being i ntercepted and modified? (Choose three.) The two parties must establish a secret key used by encryption and hash algorithms. The two parties must agree on the encryption algorithm to be used over the VPN tunnel. The devices must be authenticated before the communication path is considered secure.
CCNA v4 - E4 - Module M odule 7 (100%) -> latest Post by: Admin at 10:17 AM Lables: CCNA4 CCNA4,, CCNA4 Chapter 7
http://p4s-ccna.blogspot.com http://testccna-4u.blogspot.com 1. Refer to the exhibit. IPv6 address 2006:1::1/6 2006:1::1/64 4 eui-64 has been configured on the router FastEthernet0/0 interface. Which statement accurately describes the EUI-64 identifier configuration? The configuration will derive the interface portion of the IPv6 address from the MAC address of the interface. 2. Refer to the exhibit. Which address or addresses represent the inside global address? 209.165.20.25 3. Your organization is issued the IPv6 prefix of 2001:0000: 2001:0000:130F:: 130F::/48 /48 by your service provider. With this prefix, how many bits are available for your organization to create subnetworks? 16 4. What are two benefits of NAT? (Choose two.) It saves public IP addresses. It adds a degree of privacy and security to a network. network. 5. What is true regarding the differences between NAT and PAT? PAT uses unique source port numbers to distinguish between tr anslations. http://p4s-ccna.blogspot.com http://testccna-4u.blogspot.com
6. A network administrator wants to connect two IPv6 islands. The easiest way is through a public network that uses only IPv4 equipment. What simple solution solves the problem? Use tunneling to encapsulate the IPv6 traffic in the IPv4 protocol. 7. Refer to the exhibit. Which two a ddresses could be assigned to traffic leaving S 0 as a result of the statement ip nat pool Tampa 179.9.8.96 179.9.8.111 netmask 255.255.255.240? (Choose two.) 179.9.8.98 179.9.8.101 8. Refer to the exhibit. The FTP server has an RFC 1918 private address. Users on the Internet need to connect to the FT P server on t he Fa0/0 LAN of R1. Which three configurations must be completed on R1? (Choose three.) open port 20 open port 21 NAT with port forwarding 9. After activating IPv6 routing on a Cisco router and programming IPv6 addresses on multiple interfaces, what is the remaining step to activate RIPng? Enter the interface programming mode for each IPv6 interface and enable IPng RIP. 10. Refer to the exhibit. How many IPv 6 broadcast domains exist in thi s topology? 0 11. Refer to the exhibit. Traffic exiting R1 is failing translation. What part of the configuration is most
e y ncorre ncorrect ct access-list statement 12. Refer to the exhibit. According to the output, how ma ny addresses have been successfully assigned by this DHCP server? 8 13. Refer to the exhibit. What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco broadband router? defines which addresses can be translated 14. A technician has been told by a supervisor to always clear any dynamic translations before attempting to troubleshoot a failed NAT connection. Why has the supervisor issued these instructions? Because entries can be cached for long periods of time, the supervisor wants to prevent decisions being made based on old data. 15. Refer to the exhibit. Which two statements about the configuration are true? (Choose two.) Traffic from the 10.1.1.0 10.1.1.0 network will be translated. Permitted traffic gets translated to a single inside global IP address. 16. Refer to the exhibit. R1 is performing NAT for the 10.1.1.0/24 10.1.1.0/24 network, and R2 is performing NAT for the 192.168.1.2 192.168.1.2/24 /24 network. What would be v alid destination IP address for HostA to put in its IP header when communicating with the web server? 172.30.20.2 17. What type of NAT should a network administrator use to ensure that a web server on the inside network is always available to the outside network? static NAT 18. How many bits of an IPv 6 address are used to identify the i nterface ID? 64 19. Refer to the exhibit. A technician used SDM to enter the NAT configuration for a Cisco router. Which statement correctly describes the result of the configuration? A user on the outside network sees a request a ddressed from 192.168. 192.168.1.3 1.3 using port 80. 20. Refer to the exhibit. A network technician determines DHCP clients are not working properly. The clients are receiving IP configuration information from a DHCP server configured on the router but cannot access the Internet. From the output in the gra phic, what is the most likely problem? The pool does not have a default router defined for the clients. 21. Refer to the exhibit. On the basis of the configuration shown, how should the pool of the excluded addresses be assigned to key hosts on the network, such as router interfaces, printers, and servers? The addresses are statically assigned by the network administrator.
CCNA4 Module 7(90,5%) 7 (90,5%) Post by: Admin at 11:09 PM Lables: CCNA4 CCNA4,, CCNA4 Chapter 7 1 Why is it important to record baseline measurements of a prototype network? Test results show security weaknesses after the baseline tests a re run. The baseline is the point at which the network is operating at its fullest potential. Baseline measurements define a point at which network traffic has exceeded the designed capabilities of the network. Test results are compared to the baseline to see how the test conditions increase processor use or decrease av ailable bandwidth.*****
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Refer to the exhibit. During prototype testing, verification of VLAN connectivity is being performed. Based on the information shown, what command produced the output? show spanning-tree show interfaces trunk******** show cdp neighbors show interfaces show ip interface brief
3 How do designers decide which network functions need to be i ncluded in the prototype test? They select the functions that a lign with the business goals.****** They select the functions that occur at the network core. They select the functions that do not exist in the existing network. They select the functions from a list of generic network operations.
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Refer to the exhibit. A network administrator has been given the task of creating a design for a temporary classroom building that is to be set up outside an overcrowded school. In testing the prototype, it is found that the student PC cannot ping the teacher PC. All the switch interfaces are active and connected properly, as is interface Fa0/0 of the router. Given that only the commands shown have been added to the router configuration, what i s the source of the problem? The IP settings on the student PC are incorrect.******* incorrect.******* The default gateway on the teacher PC is misconfigured. The router Fa0/0 interface has not been configured as a VLAN trunk.
The Fa0/0 physical interface has not been configured with an IP address and subnet mask. The administrator forgot to configure a routing protocol to allow the ping packets to reach the teacher PC subnet.
5
Refer to the exhibit. What two measures can be taken to address the areas of weakness circled in the network design? (Choose two.) Provide redundant connections to all end users. Add another core switch to increase redundancy. Add a switch in the server block connecting the server farm to each core switch.******* switch.******* Add an additional switch to the DMZ and direct links from the new switch to the core switches. Provide a redundant firewall router connecting to a second ISP, the core switches, and the DMZ.******* DMZ.*******
6
Refer to the exhibit. After all the interfaces have stabilized, what is the spanning-tree state of all the enabled interfaces of SW11? discarding Forwarding**** learning listening
7 A network engineer has decided to pilot test a portion of a new network design rather than rely on a prototype for proof-of-concept. proof-of-concept. What What are two advant ages of pilot testing a design concept? (Choose (Choose two.) The test network experiences real-world network traffic.****** traffic.********* *** Users within the enterprise are not affected by the test. Network response can be tested in unplanned and unpredictable situati ons.****** ons.********* *** Unlikely failure conditions can be conveniently tested. Network response can be tested in a highly controlled simulated environment.
8
Refer to the exhibit. During prototype testing of the Cisco network shown, connectivity must be verified. Assuming all connections are working and CDP is enabled on all devices and interfaces, on which device was the command issued?
R1******** S1 R3 S2 R5 S3
9 Switch port Fa0/24 was previously configured as a trunk, but now it is to be used to connect a host to the network. How should the network administrator reconfigure switch port Fa0/24? Use the switchport mode access command from interface configuration mode. Enter the switchport nonegotiate command from interface configuration mode. Administratively shut down and re-enable the interface to return it to the default. Enter the no switchport mode tru nk command in interface configuration mode.***** mode.***** Use the switchport access vlanvlan number command from interface configuration mode to remove the port from the trunk and add it to a specific VLAN.
10
Refer to the exhibit. A network technician is performing an initial installation of a new switch in the east wing. The technician removes the switch from the box, makes the connections to the network, and adds the configuration shown. The technician notifies the network administrator that the switch has been installed. When the network administrator at the home office attempts to telnet to the switch from host 192.168.0.1 192.168.0.1,, the connection fails. What action should the network technician take? Add an enable password to the switch. Add a default gatewa y to the switch configuration.******** configuration.********** Configure the switch with an IP access list to permit the host connection. Enable the physical interfaces of the switch with the no shutdown command.
11
Refer to the exhibit. The redundant paths are of equal bandwidth and EIGRP is the routing protocol in use. Which statement describes the data flow from Serv er to PC2? EIGRP load balances a cross the R3 to R1 an d R3 to R2 links. ********** ********** EIGRP load balances across the R1 to Switch3 and R2 to Switch3 paths. EIGRP load balances across the Switch1 to Switch3 and Switch1 to Switch2 paths. EIGRP does not load balance in this topology.
12 In the router comma nd encapsulation dot1q 10, what does the number 10 represent? the metric used for a particular route the number of the VLAN associated with the encapsulated subinterface********* subinterface********* the priority number given to the device for the election process the number that must match the Fast Ethernet subinterface number the number used to program the router for unequal cost path load balancing
13 Which protocol allows a switch port to transition directly to the forwarding state after a failure is detected? STP******** BGP RSTP HSRP
14 A network designer needs to determine if a proposed IP addressing scheme allows efficient route summarization and provides the appropriate amount of scalability to a design. What is useful for validating a proposed hierarchical IP addressing scheme? NBAR a pilot network a route summary a network simulator******** simulator******** a physical topology map
15
Refer to the exhibit. A network designer creates a test plan that includes the specification shown. In which section of the test plan would this specification be found? Test Description Test Procedures Design and Topology Diagram Actual Results and Conclusions Anticipated Results and Success Criteria********** Criteria************
16 While preparing a network test plan document, a network designer records all initial and modified device configurations. Which section of the document typically contains this information? Appendix******* Test Procedures Test Description Actual Results and Conclusions Anticipated Results and Success Criteria
17
Refer to the exhibit. The users o n the 192.168.10. 192.168.10.192 192 network are not allowed Internet a ccess. The network design calls for an extended ACL to be developed and tested. Where should the ACL be placed for the least effect on other network traffic? inbound on Fa0/0 of R3 outbound on Fa0/0 of R3 inbound on Fa0/1 of R3 outbound on Fa0/1 of R3******* inbound on Fa0/1 of R2 outbound on S0/0 of R2
18
Refer to the exhibit. Why are interfaces Fa0/11, Fa0/23, Fa0/23, and Fa0/24 not shown in this switch output? Interfaces Fa0/11, Fa0/23, and Fa0/24 are trunks.******** Interfaces Fa0/11, Fa0/23, and Fa0/24 are shutdown. Interfaces Fa0/11, Fa0/23, and Fa0/24 are blocking. Interfaces Fa0/11, Fa0/23, and Fa0/24 failed diagnostics.
19 What OSI model Layer 2 security measure can a network engineer implement when prototyping network security? a firewall at the network edge port security a t the access design layer********** layer********** port security at the distribution design layer IP access access control control lists at the access access desi n la er
20
Refer to the exhibit. During prototyping, Layer 2 functionality is being tested. Based on the output shown, which two pieces of information can be determined? (Choose two.) Switch1 is the root bridge. Interface Fa0/2 on Switch1 has no role in the operation of spanning tree. Interface Fa0/2 on Switch1 is the a lternate port used to r each the root bridge.**** Based on the entries in the "Role" column, it can be concluded that RSTP has been implemented.**** Interface Fa0/1 on Switch1 is the forwarding port selected for the entire spanning-tree topology.
21 What Rapid Spanning Tree Protocol (RSTP) state is given to the forwarding port elected for every switched Ethernet LAN segment? root backup alternate Designated*******
CCNA v4 - E4 - Module M odule 8 (100%) Post by: Admin at 10:42 AM Lables: CCNA4 Chapter 8
http://p4s-ccna.blogspot.com http://testccna-4u.blogspot.com 1. Excessive Excessive broadcasts are generally a symptom of a problem at which layer? data link 2. Refer to the exhibit. Users at Branch B are reporting trouble accessing a corporate website running on a server that is located at HQ. HQ and Branch A users can access the website. R3 is able to ping 10.10.10.1 successfully but not 10.10.10.2. The users at Branch B can access servers at Branch A. Which two statements are true aboutthe troubleshooting efforts? (Choose two.) Frame Relay at R3 and R2 should be tested to narrow the scope of the problem. An ACL entry error could cause the failure at Layer 4 in either R3 or R2. 3. What is one example of a physical layer problem? incorrect clock rate 4. Which two components should be taken into consideration when establishing a network baseline? (Choose two.) information about the network design expected performance under normal operating conditions 5. Refer to the exhibit. Which two steps should be ta ken during the process of creating network documentation? (Choose two.) Record the information about the devices discovered in the entire network, including the remote locations. Transfer any information about the devices from the network configuration table that corresponds to a component of the topology diagram. 6. A technician has been asked to troubleshoot an existing switched network but is unable to locate documentation for the VLAN configuration. Which troubleshooting tool allows the technician to map and discover VLAN and port assignments? network analyzer 7. What combination of IP address and wildcard mask should be used to specify only the last 8 addresses in the subnet 192.168.3.32/28? 192.168.3.40 0.0.0.7 8. Information about which OSI layers of connected Cisco devices can be verified with the show cdp neighbors command? Layer 1, Layer 2, and Layer 3 9. A technician has been asked to make several changes to the configuration and topology of a network and then determine the outcome of the changes. What tool can be used to determine the overall effect caused by the chan ges? baselining tool 10. Which two pieces of information are typically found on a logical network dia gram? (Choose two.) interface identifiers DLCI for virtual circuits
11. Refer to the exhibit. Which three pieces of information can be determined by analyzin g the output shown? (Choose three.) A carrier detect signal is present. Keepalives are being received successfully. The LCP negotiation phase is complete. 12. Clients across the company are reporting poor performance a cross all corporate applications running in the data center. Internet access and applications running across the corporate WAN are performing normally. The network administrator observes a continual broadcast of random meaningless traffic (jabber) on the application server LAN in the data center on a protocol analyzer. How should the administrator start troubleshooting? The jabber in the data center indicates a local physical layer problem. Use the protocol analyzer to determine the source of the jabber, and then check for a recent NIC driver update or bad cabling. 13. When gathering symptoms for troubleshooting a network problem, which step could result in getting an external administrator involved in the process? determining ownership 14. A network administrator has received complaints that users on a local LAN can retrieve e-mail from a remote e-mail server but a re unable to open web pages on the same server. Serv ices at which two layers of the OSI model should be investigated during the troubleshooting process? (Choose two.) transport layer application layer 15. Users Users are complaining of very long wait times to access resources on the network. The show interface command reveals collision counts far above the network baseline. At which OSI layer should the administrator begin troubleshooting? physical 16. Which troubleshooting approach is suggested for dealing with a complex problem that is suspected of being caused by faulty network cabling? bottom up 17. Which two statements are true concerning logical networking models? (Choose two.) The top layer o f the TCP/IP model combines the functions of the top three OSI layers. The TCP/IP network access layer corresponds to the OSI physical and data link layers. 18. Which three approaches should be used when attempting to gather data from users for troubleshooting? (Choose three.) Obtain information by asking simple pertinent questions. Determine if the problem is related to time or a specific event. Determine if the user can re-create the problem or events leading to the problem. 19. Refer to the exhibit. Users on the Internal LAN are unable to connect to the www server. The network administrator pings the server and verifies that NAT is functioning correctly. Which OSI layer should the administrator begin to troubleshoot next? application 20. Encapsulation errors from mismatched WAN protocols on a serial link between two routers indicate a problem at which OSI layer? data link
CCNA4 Module 9 (77%) Post by: Admin at 11:04 PM Lables: CCNA4 CCNA4,, CCNA4 Chapter 9 CCNA Discovery 4 Module 9 Scored 77% 1 Upon completion of a proposal, a network design tea m must sell their ideas to two key stakeholders. Who are these two stakeholders? (Choose two.) Customers*** licensing boards cabling contractors*** internal management project implementation team
2 NetworkingCompany completes the installation of a network upgrade for a retail customer. All of the onsite tests complete successfully and the customer IT staff approves the results of the tests. The manager of the retail store contacts NetworkingCompany to inform the company that the store will not pay for the upgrade until a recently purchased software package is installed and tested on the network. Which two items that are contained in the proposal can the account manager refer to when discussing this issue with the store ma nager? (Choose two.) the project scope*** the bill-of-material the project timeline*** the terms and conditions the business goals of the customer the evaluation of the current network
3 Which proposal section describes the intended routing protocol, security mechanisms, and addressing for the planned network? logical design*** design*** physical design executive summary implementation plan network requirements
4 In order to finalize a project proposal, an account manager of a networking company creates the terms and conditions section. What are two clauses that should be i ncluded in this section? (Choose two.)
installation steps change order procedures*** procedures*** problem resolution process maintenance contract quotation
5 A company informs the account manager that the installation of a new edge router at the customer remote branch location cannot be done at the scheduled time because of a large order that the branch office needs to complete. As a result, the end date of the project must be adjusted to accommodate the additional time. What is the action should the account manager take? Cancel the order for the new edge router. Work with designer to redesign the bra nch network. Instruct the technician to complete the install of the router at on the date in the contract. Adjust the timeline documentation to show the company how the delay will affect the project completion date.***
6 Which statement describes a phased installation into an existing network? A phased installation generally takes less time and expense than a green-field installation. A phased installation is not suitable for large, multi-site network installations or upgrades. A phased installation requires detailed planning in order to avoid disruption of user services.*** A phased installation involves building an entire replacement network and migrating users over to it.
7 The NetworkingCompany team is tasked to prepare an implementation schedule for a customer. It is determined that the new firewalls and wireless controllers that are specified in the design cannot be delivered and installed within the agreed upon time frame. The NetworkingCompany informs the customer of the problem. What two options can the NetworkingCompany team take to ensure the success of the project? (Choose two.) plan to add additional staff and resources to shorten the installation time after the new equipment is delivered*** eliminate redundancy in the design to reduce the amount of equipment that is needed renegotiate a new time frame with the customer to accommodate the delay*** delay the installation of the security devices and controllers until a later time redesign the network to use only readily available equipment and software
8 A network installation team is assigned to replace all core switches in an existing data center. No other upgrades are planned. Which kind of installation is this?
a new installation a fork-lift installation a phased installation*** a green field installation
9 What two items are typically included in the executive summary of a proposal? (Choose two.) project scope summary*** high-level implementation plan quotes for all needed equipment technical requirements for the design emphasis on the benefits that meet the goals of the customer***
10 Included in a Bill of Materials (BOM) for a S OHO wired implementation is a Cisco 2811 router, Catalyst 2560 2560 switch, four PCs, three laptops, and a networked printer. Wireless LAN capability will be implemented on this network. Which two equipment types must be a dded to the BOM to i mplement this request? (Choose two.) DNS server LAN switch *** wireless NICs DHCP server wireless access points***
11 An upgraded version of the Cisco IOS has been purchased. However, the CD arrived damaged. How will this loss be covered? a hardware warranty a software warranty the Cisco SMARTnet Service*** an additional service contract
12 The operation of a new branch location network is delayed because a VPN cannot be configured and established between the branch location and the main office. It is determined that the router at the main office does not have enough memory and does not have the correct Cisco IOS version image to support the VPN features. To prevent this delay, this problem should have been identified and corrected during which part of the design project?
the preparation of the business case the prioritizing of the technical goals the characterization of the existing network*** the implementation of the approved design
13 AAA Financial Services Company is performing implementation planning for a core switch upgrade. The company has 200 financial software programmers that work billable hours during the week. They have critical, scheduled money transfer transmissions that occur at hourly intervals every night. There are two, two-hour long I T maintenance windows scheduled for software upgrades, one on Saturday and one on Sunday. The bank advertises online banking as available 24 hours on business days and 21 hours on the weekends. However, a network upgrade that is necessary to replace some switches is expected to take four hours. Because of rack constrai nts, this time includes three hours t o remove the old switches before the new switches can be installed and one hour to test the logical configuration. How should the implementation scheduling be handled? Defer the software upgrades. Use the Saturday window to perform the hardware installation. Use the Sunday window to perform the logical testing. Coordinate and publish a separa te four-hour downtime during Friday t o perform the complete switch installation and testing process. Use the Saturday and Sunday windows to correct any outage problems after the Friday window. Coordinate and publish two, four-hour downtimes incorporating the published Saturday and Sunday windows. Defer Defer any software upgrades until the new network is proven to be working correctly with the old software. Use the Sunday window as a fallback scheduling period if there a re problems necessitating backing out of the Saturday window. Coordinate and publish an eight-hour downtime incorporating the Saturday window. This will allow four hours for installation and logical testing, one hour for troubleshooting and decision, and three hours to roll back to the previous configuration if the new switching cannot pass the logical testing. Defer any software upgrades until the new network is proven to be working correctly with the old software. ****
14 A customer has just taken deliv ery of a Cisco 2811 router and Catalyst 3560 3560 switch. Included with the purchase is the SMARTnet Service. Which two resources are included with SMARTnet Service? (Choose two.) signature file updates technical support from TAC*** maintenance releases for OS software application major releases*** software application maintenance and minor releases
15 What service is provided Cisco standard warranty? software application maintenance replacement of defected hardware***
next business day delivery of replacement parts access to the Cisco Technical Assistance Center (TAC) 24 hours a day, 7 days a week
16 What are two important guidelines when creating a slide presentation for a meeting with a customer? (Choose two.) Use all capital letters on words and phrases when possible for added emphasis. Provide varied background graphics to enhance viewer interest. Use contrasting colors for background and text to a id visibi lity.*** Change fonts frequently to denote differences in subject matter. Use bulleted text to lead the discussion.****
17 Which two statements describe factors that influence the layout of a proposal? (Choose two.) Proposal layouts are required to use sans serif typefaces. A specific proposal layout is followed when one is specified in the RFP. *** A designer chooses the layout if a written RFP does not specify an outline.*** The software that is used to create the proposal dictates the proposal layouts. Proposal layouts are required to use a format that is designed by the network engineer.
18 Which occurrence would indicate a failure of the design phase? The incorrect model switches were ordered. There is no customer signoff for task completion. New requirements are identified after implementation begins. The new network capacity is inadequate to support required traffic.*** traffic.***
19 Which two items will a systems engineer include in an implementation plan? (Choose two.) references to design documents the business goals of t he customer*** diagrams of the existing traffic flows*** the steps to install and test the network cost of each network device and component
20 A Cisco 1841 router has been purchased without an agreement for SMARTnet Service. What two items are guaranteed under the standard warranty? (Choose two.) access to TAC replacement of defective physical media*** advanced replacement of hardware parts access to a renewable standard warranty contract under normal use, replacement of defective hardware***
