多項選擇題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


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1.多項選擇題下列哪一項正確描述了運行的OSPF的路由器的進程標(biāo)識符的作用?()

A.是一個本地的標(biāo)識
B.是一個全局的標(biāo)識.
C.為了標(biāo)識OSPF數(shù)據(jù)庫中的唯一的實例
D.是一個可選的參數(shù),只有多個OSPF進程在同一個路由器上運行時才需要
E.所有在同一個OSPF區(qū)域的路由器必須用同一個進程號,否則它們無法交換路由信息。

2.多項選擇題What can be done to secure the virtual terminal interfaces on a router? ()

A.Administratively shut down the interface.
B.Physically secure the interface.
C.Create an access list and apply it to the virtual terminal interfaces with the access-group command.
D.Configure a virtual terminal password and login process.
E.Enter an access list and apply it to the virtual terminal interfaces using the access-class command.

4.多項選擇題

圖中所示網(wǎng)絡(luò)運行RIPV2路由選擇協(xié)議,全網(wǎng)收斂并且所有的路由器運行正?!,F(xiàn)在R1的FastEthernet0/0端口,不能正常工作了,則網(wǎng)段內(nèi)的路由器會作出怎樣的回應(yīng)?()

A.所有的路由器會參照自己的拓?fù)鋽?shù)據(jù)庫,看它們是否有到192.168.1.0的備份路由。
B.R2和R3會標(biāo)記到192.168.1.0的路由為不可用,并且不會從R1接受更新直到它們的抑制定時器超時
C.由于水平分割原則,R2不會向R1發(fā)送關(guān)于去往192.168.1.0網(wǎng)段的錯誤信息
D.當(dāng)R2從R1那里學(xué)到192.168.1.0網(wǎng)段不可達(dá)時,R2把去往192.168.1.0網(wǎng)段的度量值設(shè)置為無限大,并向R1發(fā)送回應(yīng)消息。
E.R1將會發(fā)送LSA給R2和R3通知它們網(wǎng)絡(luò)的變化情況,然后所有的路由器周期性的遞增的發(fā)送更新直到網(wǎng)絡(luò)收斂。

5.單項選擇題A network administrator receives an error message while tring to configure the Ethernet interface of a router with IP address 10.24.24.24/29.which statement explains the reason for this issue?()

A.The address is a broadcast address
B.The Ehernet interface is faulty
C.VLSM-capable routing protocols must be enable first on the router.
D.This address is a network address.

6.單項選擇題

Th efollowing access list below was applied outbound on the E0 interface connected to the 192.169.1.8/29LAN:
access-list 135 deny tcp 192.169.1.80.0.0.7 eq 20 any
access-list 135 deny tcp 192.169.1.80.0.0.7 e q21 any
How will the above access lists affect traffic?()

A.FTP traffic from 192.169.1.22 wil lbe denied
B.Not raffic,except for FTP traffic wil lbe allowed to exit E0
C.FTP traffic from 192.169.1.9 to any host will be denied
D.All traffic exiting E0 will be denied
E.All FTP traffic to network 192.169.1.9/29 will be denied

7.單項選擇題一位網(wǎng)絡(luò)管理員在進行鏈路連通性檢查時,發(fā)現(xiàn)CiscoCatalyst系列交換機上的LED燈,在綠色和琥珀色之間不停變化。以上現(xiàn)象是因為()。

A.這個端口存在問題
B.這個端口被管理性的禁止。
C.這個端口被生成樹協(xié)議阻塞
D.這個端口的活動鏈路上有流量。

8.單項選擇題在OSPF點到點鏈路中,Hello包是發(fā)往以下那個地址?()

A.127.0.0.1
B.172.16.0.1
C.192.168.0.5
D.223.0.0.1
E.224.0.0.5
F.254.255.255.255

9.單項選擇題

根據(jù)下圖,假設(shè)路由器已經(jīng)配置了默認(rèn)配置,那么這個接口是()。

A.Ethernet
B.Fast Ethernet
C.Gigabit Ethernet
D.asynchronous serial
E.synchronous serial

10.多項選擇題Why do large OSPF networks use a hierarchical design?()

A.to confine network instability to single areas of the network.
B.to reduce the complexity of router configuration
C.to speed up convergence
D.to lower costs by replacing routers with distribution layer switches
E.to decrease latency by increasing bandwidth
F.to reduce routing overhead