A.FTP
B.Telnet
C.SMTP
D.DNS
E.HTTP
F.POP3
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A.NAT protects network security because privat enetworks are not advertised.
B.NAT accelerates the routing process because no modifications are made on the packets.
C.Dynamic NAT facilitates connections from the outside of the network.
D.NAT facilitates end-to-end communication when IPsec is enable.
E.NAT eliminates the need to re-address all host that require extemal access.
F.NAT conserves addresses through host MAC-level multiplexing.
A.to map all the devices on a network.
B.to display the current TCP/IP configuration values.
C.to see how a device MAC address is mapped to its IP address.
D.to see the path a packet will take when traveling to a specified destination.
E.to display the MTU values for each router in a specified network path from source to a destination.
A.point-to-point and multiaccess
B.point-to-multipoint and multiaccess
C.point-to-point and point-to-multipoint
D.nonbroadcast and broadcast multipoint
E.nonbroadcast and broadcast multiaccess
A.denial of service
B.brute force
C.reconnaissance
D.Trojan horse
A.access-list 50 deny 192.168.1.10.0.0.255
B.access-list 110 permit ip any any
C.access-list 2500 deny tcp any host 192.168.1.1 eq22
D.access-list 101 deny tcp any host 192.168.1.1
最新試題
請參見圖示。網(wǎng)絡(luò)技術(shù)人員試圖確定主機(jī)A 的正確IP 地址配置。以下哪一項是主機(jī)A 的有效配置?()
請參見圖示。主機(jī)B 嘗試與主機(jī)C 建立TCP/IP 會話。在嘗試期間,San Francisco 器由器的FastEthernet 接口fa0/1捕獲到一個幀。捕獲的幀中包含源IP 地址為10.10.1.2而目的IP 地址為10.31.1.20的數(shù)據(jù)包。捕獲該幀時,它的目的MAC 地址是什么?()
請參見圖示。主機(jī)A 嘗試與主機(jī)C 建立TCP/IP 會話。在嘗試期間,路由器Y 的FastEthernet 接口fa0/1捕獲到一個幀。捕獲的幀中包含源IP 地址為172.16.1.5而目的IP 地址為172.16.7.24的數(shù)據(jù)包。捕獲該幀時,它的源MAC 地址是什么?()
請參見圖示。從主機(jī)X 發(fā)出的到主機(jī)Y 的tracert 命令已成功。下列哪一項正確地反映了追蹤列表中顯示的中間網(wǎng)絡(luò)設(shè)備的順序?()
在Cisco IOS 設(shè)備中,啟動配置文件存儲于何處?()
下列哪些是私有IP 地址的地址范圍?()
在路由器上使用Router#copy running-config startup-config 命令會產(chǎn)生什么效果?()
請參見圖示。主機(jī)A 和B 無法互相通信。此問題的原因是什么?()
請參見圖示。下列哪組設(shè)備僅包含中間設(shè)備?()
何時必須使用clock rate 命令配置路由器串行接口?()