第三期English FormJ1a DRSEnt v40 Final.docx

1、第三期English FormJ1a DRSEnt v40 FinalRefer to the exhibit. Which IP address can be assigned to the Fa0/0 interface of R1 to enable host A to access host B? 192.168.1.32/26 192.168.1.64/26 192.168.1.126/26 192.168.1.129/26 What are two characteristics of EIGRP? (Choose two.) It supports a maximum hop c

2、ount of 15. It sends small hello packets to maintain knowledge of its neighbors. It forwards complete routing tables in its updates to neighboring routers. It supports equal and unequal cost load balancing负载平衡 It supports only one network layer protocol.Refer to the exhibit. The network is using OSP

3、F as the routing protocol. A network administrator issues the show ip ospf neighbor command to check the status of operation. Which statement is true? RB has the lowest priority value. RC and RD have the lowest router IDs on the network. RA has established adjacencies with all neighbor routers. RA a

4、nd RB can not form an adjacency because they are stuck in the 2-way state.Refer to the exhibit. What is the purpose of the command: RouterA(config)# access-list 1 permit 192.168.16.0 0.0.0.255? It identifies traffic on all inside interfaces to be translated and given access to the ISP router. It ide

5、ntifies traffic from the fa0/1 interface to be translated and given access to the ISP router. It allows traffic from the ISP to reach all of the inside interfaces. It identifies traffic from the fa0/0 interface to be translated and given access to the ISP router. It allows traffic from the ISP route

6、r to the fa0/1 interface. What will be the two wildcard masks required in an extended access list statement that blocks traffic to host 192.168.5.45 from the 172.16.240.0/27 network? (Choose two.) 0.0.0.0 255.255.240.0 255.255.255.255 0.0.31.255 255.255.255.240 0.0.0.31 Which two statements are true

7、 about the native VLAN on a switch? (Choose two.) It requires a special VLAN ID tag. It is unable to be changed to a different VLAN. Untagged traffic slows the switching process down. The native VLAN defaults to VLAN 1 on Cisco Catalyst switches. Untagged frames that are received on a trunk become m

8、embers of this VLAN. Which statement is accurate about the CIR in Frame Relay? It is important to purchase a CIR that matches the highest bandwidth requirements of the enterprise. The CIR can be no lower than the port speed of the local loop. The CIR defines the contracted maximum rate available fro

9、m the service provider on the Frame Relay circuit. It is possible to burst over the CIR if bandwidth is available. 如果带宽允许，则突发速率有可能超出 CIR 的突发量Refer to the exhibit. In what sequence (from first to last) does an OSPF router check the parameters listed when selecting the DR? C, B, A, D D, C, B, A A, B,

10、C, D A, C, B, D B, C, A, DRefer to the exhibit. R1 and R2 are connected via serial interfaces. Both interfaces show that there is Layer 2 connectivity between them. The administrator verifies that CDP is operational; however, pings between the two interfaces are unsuccessful. What is the cause of th

11、is connectivity problem? no set loopback incorrect subnet mask on R2 incompatible bandwidth incorrect IP address on R1 incompatible encapsulationRefer to the exhibit. A network administrator noticed that the VLAN configuration changes at SW2 did not propagate传播to SW3. On the basis of the partial out

12、put of the show vtp status command, what is the possible cause of the problem? VTP V2 mode is disabled. SW3 is configured as transparent mode. The number of existing VLANs does not match. The configuration revision number does not match. When MD5 authentication is used for OSPF routing protocol auth

13、entication, what two facts are known about the key? (Choose two.) The key passes between routers in plain text. The key is used to help generate an encrypted number for authentication. 密钥用于帮助生成验证用的加密数字 The key passes between routers in encrypted form. The key is never transmitted. The key can be cap

14、tured by using a packet sniffer.Refer to the exhibit. Internet access is crucial for the company network shown. Internet access is provided by two ISPs. ISP1 is the primary provider and ISP2 is the backup provider. The network administrator configures BorderR as the border router so that in normal o

15、perations, all Internet traffic goes through ISP1. However, if the link to ISP1 fails, then BorderR will automatically forward Internet traffic to ISP2. The administrator configures two default routes: BorderR(config)# ip route 0.0.0.0 0.0.0.0 192.168.100.1 200 BorderR(config)# ip route 0.0.0.0 0.0.

16、0.0 172.16.1.1 However, when the administrator issued the show ip route command to verify the configuration, only the second default route is in the routing table. Why is the first default route not showing? The first configuration command overwrites the second command. The first default route will

17、be installed into the routing table if there is traffic with an IP address that is destined for the 192.168.100.0 network. This is expected because the link to ISP1 is active. If the link to ISP1 goes down, then the first default route will be installed into the routing table. The first default rout

18、e cannot be installed into the routing table unless the administrator manually disables the second default route with the no ip route 0.0.0.0 0.0.0.0 172.16.1.1 command.Refer to the exhibit. A company has recently installed a new switch (S2) into their network. After several minutes, the network adm

19、inistrator notices that the new VLAN information is not being propagated to the new switch. Given the show vtp status command output, what is the possible problem that prevents the information from being received by the new switch? VTP version mismatch VTP domain name mismatch VTP revision number mi

20、smatch time synchronization problemsRefer to the exhibit. Assuming that all three routers are configured with the EIGRP routing protocol and sharing information, what information can be gathered from the show command output? Router B has EIGRP adjacencies with both router A and C. Router B has a ful

21、ly converged topology table. Router B has not formed an adjacency with router A. Router B has not formed an adjacency with router C. If an authentication protocol is configured for PPP operation, when is the client or user workstation authenticated? prior to link establishment during the link establ

22、ishment phase before the network layer protocol configuration begins after the network layer protocol configuration has ended Which statement is true about the difference between CHAP and PAP in PPP authentication? PAP and CHAP provide equivalent protection against replay attacks. PAP sends the pass

23、word encrypted and CHAP does not send the password at all. PAP uses a two-way handshake method and CHAP uses a three-way handshake method. PAP sends the password once and CHAP sends the password repeatedly until acknowledgement of authentication is received. What should be considered when designing

24、an addressing scheme that uses private IP address space? Private IP addresses are globally routable. Address summarization is not recommended. Hierarchical design principles should be utilized. Discontiguous networks are no longer problematic. An administrator is configuring a new router to permit o

25、ut-of-band management access. Which set of commands will allow the required login using a password of cisco? Router(config)# line vty 0 4 Router(config-line)# password manage Router(config-line)# exit Router(config)# enable password cisco Router(config)# line vty 0 4 Router(config-line)# password ci

26、sco Router(config-line)# login Router(config)# line console 0 Router(config-line)# password cisco Router(config-line)# login Router(config)# line console 0 Router(config-line)# password cisco Router(config-line)# exit Router(config)# service password-encryption In order for a VLAN to be created on a

27、 switch, what configuration parameter is required? VTP domain name VLAN number VLAN IP address VLAN database nameRefer to the exhibit. A network administrator is configuring R1 to send a summary route to R2. Which statement would include only the four Ethernet networks in one summarization route? Ro

28、uter(config-if)# ip summary-address eigrp 1 172.31.0.0 255.255.0.0 Router(config-if)# ip summary-address eigrp 1 172.31.0.0 255.255.248.0 Router(config-if)# ip summary-address eigrp 1 172.31.0.0 255.255.252.0 Router(config-if)# ip summary-address eigrp 1 172.31.0.0 255.255.255.0 Router(config-if)# i

29、p summary-address eigrp 1 172.31.0.0 255.255.255.248 Router(config-if)# ip summary-address eigrp 1 172.31.0.0 255.255.255.252 Refer to the exhibit. What is the lowest cost OSPF path for traffic that is sourced from H2 and destined for H3? R3 to R5 R3 to R2 to R5 R3 to R4 to R5 R3 to R2 to R1 to R5Re

30、fer to the exhibit. A network administrator wants to block Telnet sessions from host B to hosts E and F. Where should ACL 110 be placed if the administrator follows Cisco best practices? on the Fa0/0 interface of R1 inbound on the S0/0/0 interface of R1 inbound on the S0/0/0 interface of R3 outbound

31、 on the Fa0/0 interface of R3 inbound A company is trying to decide whether to use a PVC or an SVC for the company WAN connection. Which statement best describes a benefit of using a PVC? A PVC is dynamically established between two points when a router requests a transmission. A PVC eliminates the

32、need for call setup and clearing for each transmission session. A PVC is best suited for small companies with sporadic data flows. A PVC does not require preconfiguration by a service provider.Refer to the exhibit. All routers are configured to use the EIGRP routing protocol, and the network administrator has configured the serial interface