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2017計(jì)算機(jī)四級(jí)網(wǎng)絡(luò)工程師筆試題
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(1) 封禁ICMP協(xié)議，只轉(zhuǎn)發(fā)212.78.170.166/27所在子網(wǎng)的所有站點(diǎn)的ICMP數(shù)據(jù)包，正確的access-list配置是
A) Router(config)#access-list 110 permit icmp 212.78.170.166 0.0.0.0 any
Router(config)#access-list 110 deny icmp any any
Router(config)#access-list 110 permit ip any any(www.Examw。com)
B) Router(config)#access-list 110 permit icmp 212.78.170.0 255.255.255.224 any
Router(config)#access-list 110 permit ip any any
Router(config)#access-list 110 deny icmp any any
C) Router(config)#access-list 110 perimt icmp 212.78.170.0 0.0.0.255 any
Router(config)#access-list 110 deny icmp any any
Router(config)#access-list 110 permit ip any any
D) Router(config)#access-list 110 permit icmp 212.78.170.160 0.0.0.31 any
Router(config)#access-list 110 deny icmp any any
Router(config)#access-list 110 permit ip any any
(2) Cisco路由器執(zhí)行show access-list命令顯示如下一組控制列表信息
Standard IP access list 30
deny 127.0.0.0,wildcard bits 0.255.255.255(www.Examw。com)
deny 172.16.0.0,wildcard bits 0.15.255.255
permit any
根據(jù)上述信息，正確的access-list配置是
A) Router(config)#access-list 30 deny 127.0.0.0 255.255.255.0
Router(config)#access-list 30 deny 172.16.0.0 255.240.0.0
Router(config)#access-list 30 permit any
B) Router(config-std-nacl)#access-list 30 deny 127.0.0.0 0.255.255.255
Router(config-std-nacl)#access-list 30 deny 172.16.0.0 0.15.255.255
Router(config-std-nacl)#access-list 30 permit any
C) Router(config)#access-list 30 deny 127.0.0.0 0.255.255.255
Router(config)#access-list 30 deny 172.16.0.0 0.15.255.255
Router(config)#access-list 30 permit any
D) Router(config)#access-list 30 deny 127.0.0.0 0.255.255.255
Router(config)#access-list 30 permit any
Router(config)#access-list 30 deny 172.16.0.0 0.15.255.255
(3) 通過(guò)撥號(hào)遠(yuǎn)程配置Cisco路由器時(shí)，應(yīng)使用的接口是
A)AUX B)Console C)Ethernet D)VTY
(4) 在Cisco路由器上配置RIP v1路由協(xié)議，參與RIP路由的網(wǎng)絡(luò)地址有193.22.56.0/26、193.22.56.64/26、193.22.56.128/26和193.22.56.192/26，正確的配置命令是
A)Router(config)# network 193.22.56.0 0.0.0.255
B)Router(config-router)# network 193.22.56.0 255.255.255.0
C)Router(config)# network 193.22.56.0
D)Router(config-router)# network 193.22.56.0
(5) 下列關(guān)于藍(lán)牙技術(shù)的描述中，錯(cuò)誤的是
A)工作頻段在2.402GHz~2.480GHz
B)非對(duì)稱連接的異步信道速率是433.9kbps/57.6kbps
C)同步信道速率是64 kbps
D)擴(kuò)展覆蓋范圍是100米
D C A D B
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