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A router has two FastEthernet interfaces and needs to connec

题目
单选题
A router has two FastEthernet interfaces and needs to connect to four vlans in the local network.How can you accomplish this task,using the fewest physical interfaces and without decreasing network performance?（）
A

Add two more FastEthernet interfaces.

B

Add a second router to handle the vlan traffic.

C

Use a hub to connect the four vlans with a FastEthernet interface on router.

D

Implement a router-on-a-stick configuration.

参考答案和解析
正确答案： B
解析： 暂无解析
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相似问题和答案

第1题：

Refer to the exhibit. Which statement is co rrect regarding the router configuration shown? ()

A. The router will rebroadcast any DHCP requests received by this interface out to all interfaces included in the ip helper - address commands.

B. The router will rebroadcast any UDP broadcasts received by this interface out to all interfaces included in the ip helper - address commands.

C. The router will unicast any DHCP requests received by this interface out to all addresses included in the ip helper - address commands.

D. This configuration will not do anything because the ip helper - address command needs to also be applied to the 192.168.23.1 IP address.


参考答案：C

第2题：

At a branch location, TestKing.com has deployed a non modular router that is equipped with two serial interfaces and two Ethernet interfaces.What additional equipment must be used to allow the branch office to connect to the central office by using an ISDN service?（）

A. a serial cable with a V.35 to RJ45 adapter

B. a CSU/DSU

C. an external ISDN TA and NT1

D. The non-modular router cannot connect to an ISDN service. The network administrator must purchase a modular router with an ISDN BRI-U card.


参考答案：C

第3题：

Router VE1 has just received a packet and needs to route it. What two actions must this router take in order to route incoming packets? (Choose two)

A. Inspect the routing table to select the best path to the destination network addresses.

B. Validate sources of routing information.

C. Inspect the ARP table to verify a legitimate source MAC address for each packet.

D. Identify the destination network address of each packet.

E. Verify the receipt of routed packets by the next hop router.

F. Identify the source network address of each packet.


正确答案：AD
A,D 解析：Explanation:
The router decides how to forward an incoming packet by finding the routes that "match" the destination address of the packet, and then forwarding it according to the most narrowly applicable one.

A packet matches a route in the following way: a packet has (among other things) a destination address in its header, a route contains either a network or a host address, a network mask (netmask), and instructions on how to forward a packet using the route.

The packet matches the route if its destination address is part of the address subspace defined by the network address or exactly matches the host address of the route. A route is more narrowly applicable than another if the address subspace defined by its network address contains fewer actual addresses than the other, which is indicated by the netmask. An entry with a host address, rather than a network address, is the narrowest kind.

第4题：

Refer to the exhibit.Which two statements are true of the interfaces on switch1?()

A.AhubisconnecteddirectlytoFastEthernet0/5

B.FastEthernet0/1isconfiguredasatrunklink.

C.FastEthernet0/5hasstaticallyassignedmacaddress

D.InterfaceFastEthernet0/2hasbeendisable.

E.MultipledevicesareconnecteddirectlytoFastEthernet0/1.

F.FastEthernet0/1isconnectedtoahostwithmultiplenetworkinterfacecards.


参考答案：A, B

第5题：

Refer to the exhibit. What two statements are true?()

A. This is the designated router (DR) on the FastEthernet 0/0 link.

B. The output was generated by the show ip interface c ommand.

C. The router was configured with the commands:r outer ospf 1 network 172.16.6.0 0.0.0.255 area 1

D. The IP address of the backup designated router (BDR) is FE80::205:5FFF:FED3:5808.

E. Interface FastEthernet 0/0 was configured with the ipv6 o spf 1 area 1 command.

F. OSPF version 2 has been enabled to support IPv6.


参考答案：D, E

第6题：

Refer to the exhibit. EIGRP has been configured on router D. Router C is performing mutual redistribution between EI GRP and OSPF. While verifying that the redistribution is functioning properly, you discover that while router C has all of the EIGRP routes in its routing table, router A does not have any routes from the EIGRP domain. What on router C may be the cause o f the problem?（）

A. The no auto - summary command needs to be added under router eigrp 1

B. The subnets keyword was not included in the redistribute command under router ospf 1

C. The metric specified for the redistributed EIGRP routes is too large; m aking the EIGRP routes unreachable by router A

D. The default - information originate command needs to be added under router ospf 1

E. The administrative distance of either OSPF or EIGRP must be changed so that EIGRP has a higher administrative distanc e than OSPF


参考答案：B

第7题：

Refer to the exhibit. What three statements are true about the IS － IS configuration?()

A.The router is in area 49.0001.0002

B.The router acts as a Level 1 - 2 router

C.CLNS routing is enable d for the router

D.The router has a system ID of 0003.0004

E.The interfaces have a functional IS - IS configuration

F.The network service access point selector (NSEL) byte has a value of 0


参考答案：B, E, F

第8题：

Refer to the exhibit. Which two statements are true about the partial configuration that is shown? ()

A. The first DHCP client to connect to the FastEthernet 0/1 interface will receive the IP address 10.10.0.1.

B. DHCP requests received on the FastEthernet 0/1 interface will be forwarded to 10.0.0.2.

C. The first DHCP client to connect to the FastEthernet 0/0 interface will receive the IP a ddress 10.0.0.1

D. The first DHCP client to connect to the FastEthernet 0/0 interface will receive the IP address 10.0.0.6.

E. Hosts connected to the FastEthernet0/1 interface will not receive DHCP replies from the router.


参考答案：D, E

第9题：

Refer to the exhibit. A network associate has configured OSPF with the command:City(config-router) network 192.168.12.64 0.0.0.63 area 0After completing the configuration, the associate discovers that not all the interfaces are participating in OSPF. Which three of the interfaces shown in the exhibit will participate in OSPF according to this configuration statement? （）

A.FastEthernet0 /0

B.FastEthernet0 /1

C.Serial0/0

D.Serial0/1.102

E.Serial0/1.103

F.Serial0/1.104


参考答案：B, C, D

第10题：

A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing.OSPF has been configured on the router，as the routing protocol for the network.Which statement about thisnetwork is true？（）

  • A、For the two vlans to communicate，a network statement for the trunk interface needs to be added to the  OSPF configuration.
  • B、For the two vlans to communicate， a network statement for each subinterface needs to be  added  to the OSPF configuration.
  • C、Direct inter-vlan communication does not require OSPF
  • D、OSPF cannot be used if router-on-a-stick is configured on the router

正确答案:C

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