單項選擇題Which component of VPN technology ensures that data can be read only by its intended recipient？（）

A.data integrity
B.encryption
C.key exchange
D.authentication


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1.多項選擇題If IP routing is enabled, which two commands set the gateway of last resort to the default gateway?（）

A.ip default-gateway 0.0.0.0
B.ip route 172.16.2.1 0.0.0.0 0.0.0.0
C.ip default-network 0.0.0.0
D.ip default-route 0.0.0.0 0.0.0.0 172.16.2.1
E.ip route 0.0.0.0 0.0.0.0 172.16.2.1

2.單項選擇題A default Frame Relay WAN is classified as what type of physical network（）。

A.point-to-point
B.broadcast multi-access
C.nonbroadcast multi-access
D.nonbroadcast multipoint
E.broadcast point-to-multipoint

4.單項選擇題Which command is used to load a configuration from a TFTP server and merge the configuration into RAM?（）

A.copy running-config: TFTP
B.copy TFTP: running-config
C.copy TFTP: startup-config
D.copy startup-config: TFTP

5.多項選擇題Which two commands correctly verify whether port security has been configured on port FastEthernet0/12 on a switch？（）

A.SW1#shows withport port-security interface FastEthernet0/12
B.SW1#shows withport port-secure interface FastEthernet0/12
C.SW1#show port-secure interface FastEthernet0/12
D.SW1#show running-config

6.多項選擇題下面哪些是ACL可以做到的？（）

A.允許125.36.0.0/16網(wǎng)段的主機使用FTP協(xié)議訪問主機129.1.1.1；
B.不讓任何主機使用Telnet登錄；
C.拒絕一切數(shù)據(jù)包通過；
D.僅允許某個用戶從外部登錄，其他用戶不能這樣做。

7.多項選擇題What are two reasons that a network administrator would use access lists (Choose two.)（）。

A.to control vty access into a router
B.to control broadcast traffic through a router
C.to filter traffic as it passes through a router
D.to filter traffic that originates from the router
E.to replace passwords as a line of defense against security incursions

8.單項選擇題Which command is used to copy the configuration from RAM into NVRAM?（）

A.copy running-config startup-config
B.copy startup-config: running-config
C.copy running config startup config
D.copy startup config running config
E.write terminal

10.多項選擇題當接口運行在RIP-2廣播方式時，它可以接收的報文有（）。

A.RIP-1廣播報文
B.RIP-1組播報文
C.RIP-2廣播報文
D.RIP-2組播報文