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单选题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 24B 126C 128D 254

题目
单选题
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

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相似问题和答案

第1题：

Every host and router on the Internet has an IP address, which encodes its(12).

A．host number

B．network number

C．host number and socket

D．host number and network number


正确答案：D

第2题：

You are the network administrator at TestKing. TestKing has been provided withthe network address 165.100.27.0/24. The TestKing CEO wants to know how many subnetworks this address provides, and how many hosts can be supported on each subnet.What would your reply be?（）

A. One network with 254 hosts.

B. 254 networks with 254 hosts per network.

C. 65,534 networks with 255 hosts per network.

D. 30 networks with 64 hosts per network.

E. 254 networks with 65,534 per network.


参考答案：A

第3题：

● Every host and router on the Internet has an IP address，which encodes its (69) ．

(69) A．host number

B．host number and socket

C．network number

D．host number and network number


正确答案：D

【解析】译文：每一个因特网上的主机和路由器都有一个IP地址，它编码了该机的主机号和网络号。

第4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

正确答案:D

第5题：

The server administrator discovers that a server， which has not been patched， is runningextremely slow and suspects that the server may have been compromised. Which of the following commands should the administrator use to check the number of network connections the server is making？（）

  • A、netstat
  • B、ping
  • C、nslookup
  • D、grep

正确答案:A

第6题：

Ezonexam has a Class C network and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use?

A．255.255.255.192

B．255.255.255.224

C．255.255.255.240

D．255.255.255.248

E．None of the above


正确答案：C
解析：Explanation:Usingthe2n-2formula,wewillneedtouse4bitsforsubnetting,asthiswillprovidefor24-2=14subnets.Thesubnetmaskfor4bitsisthen255.255.255.240.IncorrectAnswers:A.Thiswillgiveusonly2bitsforthenetworkmask,whichwillprovideonly2networks.B.Thiswillgiveus3bitsforthenetworkmask,whichwillprovideforonly6networks.D.Thiswilluse5bitsforthenetworkmask,providing30networks.However,itwillprovideforonlyfor6hostaddressesineachnetwork,soCisabetterchoice.

第7题：

Which of the following options indicates the number of adapters that may be banded together to form an EtherChannel？（）

  • A、1 or 3
  • B、2 or more of differing models
  • C、2 or 4 of the same model
  • D、2 or more of the same model

正确答案:B

第8题：

Every host and router on the Internet has an IP address, which encodes its

A．host number

B．host number and socket

C．network number

D．host number and network number


正确答案：D

第9题：

A System p administrator has determined that a recently applied APAR needs to be removed.  Which of the following installp options will remove the APAR（）

  • A、cleanup
  • B、uninstall
  • C、deinstall
  • D、reject

正确答案:D

第10题：

A small office in which all workstations are using an ISP provided IP range has noticed a consistent decrease in network traffic speed. The decrease does not occur when the gateway to the ISP is disconnected. Which of the following should the administrator implement?（）

  • A、Multicast addressing
  • B、Load balancing
  • C、Address translation
  • D、DHCP

正确答案:C

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