CCNA系列认证

多选题What information does a router running a link-state protocol use to build and maintain its topological database?（）Ahello packetsBSAP messages sent by other routersCLSAs from other routersDbeacons received on point-to-point linksErouting tables received

题目
多选题
What information does a router running a link-state protocol use to build and maintain its topological database?（）
A

hello packets

B

SAP messages sent by other routers

C

LSAs from other routers

D

beacons received on point-to-point links

E

routing tables received from other link-state routers

F

TTL packets from designated routers

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相似问题和答案

第1题：

After implementing EIGRP on your network, you issue the show ip eigrp traffic command on router C. The following output is shown:What can you conclude about this network? ()

A. The network has been stable for at least the last 45 minutes

B. There is a flapping link or interf ace, and router C knows an alternate path to the network

C. There is a flapping link or interface, and router A does not know an alternate path to the network

D. EIGRP is not working correctly on router C

E. There is not enough information to make a determination


参考答案：A

第2题：

When a router undergoes the exchange protocol within OSPF, in what order does it pass through each state?()

A.exstart state>exchange state>loading state>full state

B.exstart state>full state>loading state>exchange state

C.Loading state>exchange state>full state>exstart state

D.exstart state>loading state>exchange state>full state


参考答案：A

第3题：

By default, how often does an ERX Edge Router send an OSPF link－state advertisement in a stable network?()

A.A

B.B

C.C

D.D


参考答案：D

第4题：

What protocol specified by RFC 1256 will allow an enabled IP host a new router when a router  becomes unavailable？ （）

  • A、 IRDP
  • B、 SNMP
  • C、 HSRP
  • D、 VRRP

正确答案:A

第5题：

What information does a router running a link－state protocol use to build and maintain its topological database?()

A. hello packets

B. SAP messages sent by other routers

C. LSAs from other routers

D. beacons received on point-to-point links

E. routing tables received from other link-state routers

F. TTL packets from designated routers


参考答案：A, C

第6题：

What kind of information does a router running a link－state routing protocol need to create and maintain its topological database?()

A. LSAs from other routers

B. Beacons received on point-to-point links

C. hello packets

D. Routing tables received from neighbors

E. SAP packets sent by other routers

F. TTL packets from exclusive routers


参考答案：A, C

第7题：

Before installing a new, upgraded version of the IOS, what should be checked on the router, and which command should be used to gather this information?()

A. the amount of available ROM

B. the amount of available flash and RAM memory

C. the version of the bootstrap software present on the router

D. show version

E. show processes

F. show running-config


参考答案：B, D

第8题：

After implementing EIGRP on your network, you issue the show ip eigrp traffic command on router C. The following output is shown:What information can you determine about this network?()

A. The network is stable

B. There is a flapping link or interface, and router C knows an alternate path to the network

C. There is a flapping link or interf ace, and router C does not know an alternate path to the network

D. EIGRP is not working correctly on router C

E. There is not enough information to make a determination


参考答案：B

第9题：

One of the most widely used routing protocols in IP networks is the Routing Information Protocol（RIP）。RIP is the canonical example of a routing protocol built on the（ ）algorithm.Routing protocols in internetworks differ slightly from the idealized graph model.In an internetwork,the goal of the routers to forward packets to various（请作答此空）.
Routers running RIP send their advertisement about cost every（ ）seconds.A router also sends an update message whenever an update from another router causes it to change its routing table.
It is possible to use a range of different metrics or costs for the links in a routing protocol.RIP takes the simplest approach,with all link costs being equal（ ）。Thus it always tries to find the minimum hop route.Valid distances are 1 through（ ）。This also limits RIP to running on fairly small networks.

A.computers
B.routers
C.switches
D.networks

答案：D
解析：
参考译文
IP网络中广泛使用的路由协议之一是路由信息协议（RIP）。RIP是基于路由算法的路由协议。网络中的路由协议与理想的图算法存在少量的差异。在互联网中，路由器的目的是将数据包转发给不同的。
运行RIP协议的路由器每秒广播一次路由信息，另外，每当路由器收到其他路由器的更新消息而导致其路由表变化时，就会发送更新消息。
路由协议使用不同的度量或成本来建立连接是可能的。RIP采用了最简单的方法，所有链路的成本都等于。这样，它总是试图寻找跳数最少的路径。有效的距离范围是从1到。这也限制了RIP只能在相当小规模的网络上运行。

第10题：

it is belong a family of ip routing protocols，each router have a partial map of network，what is the routing protocol？


正确答案: Class A： 10.0.0.0 --- 10.255.255.255
Class B： 172.16.0.0 --- 172.31.255.255
Class C:// 192.168.0.0 --- 192.168.255.255

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