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单选题 Which of the following options is representative of a Class B address?()

A

128.55.103.2

B

195.201.22.11

C

227.100.100.1

D

120.102.27.120

单选题 Which of the following functions does the "ifconfig en0" perform?()

A

Shuts down en0

B

Displays en0 settings

C

Reconfigures en0 using the ODM

D

Sends an SNMP alert to the network administrator

单选题 Which of the following options best justifies why a DNS server should be run in a large network system?()

A

To use ftp and telnet

B

To perform NFS mounts

C

To make /etc/hosts files unnecessary

D

To reduce network traffic and save bandwidth

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