单项选择题

When choosing a hostname， other machines will associate the name with（）。

A.the IP address
B.the MAC address
C.inetd
D.port 80

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单项选择题

An administrator has provided a 24 bit netmask. Which of the following options indicates the number of host addresses that are available in a network？（）

A.24
B.126
C.128
D.254

单项选择题

A class B network 129.35 has 10 subnets. Which of the following options is the correct subnet mask？（）

A.255.255.128.0 （11111111.11111111.10000000.00000000）
B.255.255.192.0 （11111111.11111111.11000000.00000000）
C.255.255.224.0 （11111111.11111111.11100000.00000000）
D.255.255.240.0 （11111111.11111111.11110000.00000000）

单项选择题

A DNS server for a large network is experiencing performance problems. Which of the following options is the best solution to fix the problem？（）

A.Enable NIS
B.Purchase a larger server
C.Use /etc/hosts on all of the systems
D.Create secondary name servers throughout the network