單項選擇題When configuring a serial interface on a router, what is the default encapsulation?()

A.atm-dxi
B.frame-relay
C.hdlc
D.lapb
E.ppp


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1.單項選擇題Which command displays CPU utilization?()

A.show protocols
B.show process
C.show system
D.show version

2.單項選擇題Which command is used to debug a ping command?()

A.debug icmp
B.debug ip icmp
C.debug tcp
D.debug packet

4.多項選擇題下面能夠表示"禁止從129.9.0.0網(wǎng)段中的主機建立與202.38.16.0網(wǎng)段內(nèi)的主機的WWW端口的連接"的訪問控制列表是()。

A.acl101 rule deny tcp source129.9.0.00.0.255.255 destination 202.38.16.00.0.0.255 destination-port equal www
B.acl101 rule deny tcp source129.9.0.00.0.255.255 destination 202.38.16.00.0.0.255 destination-port equal 80
C.acl100 rule deny udp source129.9.0.00.0.255.255 destination 202.38.16.00.0.0.255 destination-port equal www
D.acl99 rule deny udp source129.9.0.00.0.255.255 destination 202.38.16.00.0.0.255 destination-port equal www

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