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
Anadministratorhasprovideda24bitnetmask.Whichofthefollowingoptionsindicatesthenumberofhostaddressesthatareavailableinanetwork？（）
A.24
B.126
C.128
D.254 -
单项选择题
AclassBnetwork129.35has10subnets.Whichofthefollowingoptionsisthecorrectsubnetmask？（）
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
ADNSserverforalargenetworkisexperiencingperformanceproblems.Whichofthefollowingoptionsisthebestsolutiontofixtheproblem？（）
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
