江浙沪招生考试网

5. A router has been configured to provide the nine users on the branch office LAN with Internet access,as shown in the diagram. It is found that some of the users on the LAN cannot reach the Internet. Based on the topology and router output shown, which command should be issued on the router to correct the problem?

 

 

 

 

 

 

 

A: Branch(config-if)# no shutdown

B: Branch(config-if)# duplex full

C: Branch(config-if)# no keepalive

D: Branch(config-if)# ip address 192.168.10.30 255.255.255.240

E: Branch(config-if)# bandwidth 100

F: Branch(config-if)# encapsulation 802.3

Answer:  D

 

 

 

 

 

 

 

6. Refer to the exhibit. When the hosts boot, hosts that are connected to the switches are having trouble getting a DHCP address from the DHCP server. Which STP feature could minimize the effects of STP convergence for the hosts?

 

 

 

 

 

 

 

A: port priority

B: PortFast

C: BID

D: path cost

E: hold-down timer

Answer:  B

 

7. Refer to the exhibit. The partial frame in the graphic represents select header information within a frame arriving at a destination host. What can be determined from this information?

 

 

 

A: The source host is a Telnet server.

B: This frame contains the first segment in a Telnet session.

C: The Layer 2 address of the source host is 192.168.14.2.

D: The local host has received 42,335 bytes from the remote host as a part of this conversation.

Answer:  B

 

 

 

 

 

8. A network administrator wants to control which user hosts can access the network based on their MAC address.What will prevent workstations with unauthorized MAC addresses from connecting to the network through a switch?

A: BPDU

B: port security

C: RSTP

D: STP

E: VTP

F: blocking mode

Answer:  B

 

 

 

 

9. Refer to the exhibit. Workstation A must be able to telnet to switch SW-A through router RTA for management purposes. What must be configured for this connection to be successful?

 

 

 

 

A: VLAN 1 on RTA

B: default gateway on SW-A

C: IP routing on SW-A

D: cross-over cable connecting SW-A and RTA

Answer:  B

 

 

 

 

 

10. Which function does the Frame Relay DLCI provide with respect to RouterA?

A: defines the signaling standard between RouterA and the frame switch

B: identifies the circuit between RouterA and the frame switch

C: identifies the circuit between RouterB and the frame switch

D: identifies the encapsulation used between RouterA and RouterB

E: defines the signaling standard between RouterB and the frame switch

Answer:  B

 

 

11. Refer to the exhibit. Given the partial configuration shown in the exhibit, why do internal workstations on the 192.168.1.0 network fail to access the Internet?

A: A NAT pool has not been defined.

B: The wrong interface is overloaded.

C: NAT has not been applied to the inside and outside interfaces.

D: The access list has not been applied to the proper interface to allow traffic out of the internal network.

Answer:  C

 

12. In a Frame Relay environment, what is the function of the DE bit?

A: the activation of the LMI protocol

B: the identification of the virtual circuit

C: the identification of what routing updates to block

D: the identification of frames that are transmitted above the CIR

E: the notification to the destination switch of network congestion

Answer:  D

 

13. The access control list shown in the graphic has been applied to the Ethernet interface of router R1 using the ip access-group 101 in command. Which of the following Telnet sessions will be blocked by this ACL? (Choose two.)

A: from host A to host 5.1.1.10

B: from host A to host 5.1.3.10

C: from host B to host 5.1.2.10

D: from host B to host 5.1.3.8

E: from host C to host 5.1.3.10

F: from host F to host 5.1.1.10

Answer:  BD

 

 

 

 

 

 

 

14. A network administrator is designing a new corporate internetwork. The corporation is concerned about

downtime due to link failure and also about link costs. Which topology will provide some redundancy to

increase reliability for all sites but will cost less than a fully redundant topology?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Answer:  B

 

15. You have finished physically installing an access point on the ceiling at your office. At a minimum, which parameter must be configured on the access point in order to allow a wireless client to operate on it?

A: AES

B: PSK

C: SSID

D: TKIP

E: WEP

Answer:  C

 

 

16. What does a Layer 2 switch use to decide where to forward a received frame?

A: source MAC address

B: source IP address

C: source switch port

D: destination IP address

E: destination port address

F: destination MAC address

Answer:  F

 

 

17. The exhibited network is stable and operating properly. Assuming that default STP configurations are running on both switches, which port will be in blocking mode?

A: Port Fa0/1 on Switch1

B: Port Fa0/2 on Switch1

C: Port Fa0/1 on Switch2

D: Port Fa0/2 on Switch2

Answer:  A

 

 

 

18. What Frame Relay mechanism is used to build the map illustrated in the accompanying graphic?

A: ARP

B: Inverse ARP

C: inverse multiplexing

D: LMI mapping

E: proxy ARP

Answer:  B

 

 

 

 

 

19. The system LED is amber on a Cisco Catalyst 2950 series switch. What does this indicate?

A: The system is malfunctioning.

B: The system is not powered up.

C: The system is powered up and operational.

D: The system is forwarding traffic.

E: The system is sensing excessive collisions.

Answer:  A

 

 

20. Refer to the exhibit. The network administrator is configuring RTA to connect to a non-Cisco network. Which two commands would be applied to the S0/0 WAN interface, but not to the Fa0/0 LAN interface?(Choose two.)

A:speed

B:no shutdown

C:ip address

D:authentication pap

E:encapsulation ppp

Answer:  DE

 

21. Which two of these are characteristics of the 802.1Q protocol? (Choose two.)

A:It is used exclusively for tagging VLAN frames and does not address network reconvergence following

switched network topology changes.

B:It modifies the 802.3 frame header, and thus requires that the FCS be recomputed.

C:It is a Layer 2 messaging protocol which maintains VLAN configurations across networks.

D:It includes an 8-bit field which specifies the priority of a frame.

E:It is a trunking protocol capable of carrying untagged frames.

Answer:  BE

 

 

22. The network administrator has configured NAT as shown in the graphic. Some clients can access the Internet while others cannot. What should the network administrator do to resolve this problem?

A: Configure an IP NAT pool.

B: Properly configure the ACL.

C: Apply the ACL to the S0 interface.

D: Configure another interface with the ip nat outside command.

Answer:  B

 

23. Refer to the exhibit. When running OSPF, what would cause router A not to form an adjacency with router B?

A: The loopback addresses are on different subnets.

B: The values of the dead timers on the routers are different.

C: Route summarization is enabled on both routers.

D: The process identifier on router A is different than the process identifier on router B.

Answer:  B

 

 

24. Which two methods are examples of implementing Layer 2 security on a Cisco switch? (Choose two.)

A:disable trunk negotiation on the switch

B:enable Cisco Discovery Protocol globally to monitor for malicious devices

C:configure a switch port host where appropriate

D:enable HTTP access to the switch for security troubleshooting

E:use only protected Telnet sessions to connect to the Cisco device

F:install a modem on the auxiliary port for emergency access

Answer:  AC

 

25. How is an EUI-64 format interface ID created from a 48-bit MAC address?

A: by appending 0xFF to the MAC address

B: by prefixing the MAC address with 0xFFEE

C: by prefixing the MAC address with 0xFF and appending 0xFF to it

D: by inserting 0xFFFE between the upper three bytes and the lower three bytes of the MAC address

E: by prefixing the MAC address with 0xF and inserting 0xF after each of its first three bytes

Answer:  D