You have been allocated a /22 network.How many usable hosts are available?（）A、510B、512C、1022D、1024

题目

You have been allocated a /22 network.How many usable hosts are available?（）

A、510
B、512
C、1022
D、1024

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相似问题和答案

第1题：

You have been asked to use a 23－bit network mask to segment the network block 209.18.12.0. How many usable host addresses will there be per subnet?()

A. 510

B. 1022

C. 2046

D. 8190

参考答案：A

第2题：

You have been asked to use a 25 bit subnet mask to segment the following network block:209.18.12.0.How many usable will there be per subnet?()

A.2 hosts

B.120 hosts

C.126 hosts

D.255 hosts

参考答案：C

第3题：

Have you ever been to the place? You can see many places of interest there．（合并为一句）

Have you ever been to the place ________you can see many places of interest?

正确答案：
39. where

第4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5题：

You have been asked to use a 30 bit subnet mask to segment the following network block: 108.12.5.0. How many useable subnetworks and usable hosts could be created?()

A.32 networks with 8 hosts

B.62 networks with 2 hosts

C.30 networks with 16 hosts

D.32 networks with 14 hosts

参考答案：B

第6题：

You have been allocated a ／22 network. How many usable hosts are available?()

A. 510

B. 512

C. 1022

D. 1024

参考答案：C

第7题：

You have been asked to use a 28 bit subnet mask to segment the following network block: 108.12.5.0. How many usable hosts per sub－net could you create?()

A.10 hosts

B.14 hosts

C.12 hosts

D.16 hosts

参考答案：B

第8题：

You have a class B network with a 255.255.255.0 mask. Which of the statements below are true of this network? (Select all valid answers)

A. There are 254 usable subnets.

B. There are 256 usable hosts per subnet.

C. There are 50 usable subnets.

D. There are 254 usable hosts per subnet.

E. There are 24 usable hosts per subnet.

F. There is one usable network.

正确答案：AD
A,D 解析：Explanation:
The default subnet mask for Class B is 255.255.0.0. Thus an extra 8 bits have been used for the network portion, leaving 8 for hosts. The 2n - 2 formula (28 - 2 in this case for both the network and IP hosts) gives us 254 networks and 254 hosts per network.

Incorrect Answers:
B: We must remember to always subtract 2 (one for the network, and one for the broadcast) so the result is 254, not 256.

C, E: No possible network mask would give us this exact number of subnets or hosts.

F: This would be true if this were a class C network, not a class B.

第9题：

You are the network administrator setting up the IP network for a new branch office. You need at least 5 networks with 25 hosts each. You have been allocated a /24 network.Which prefix length will satisfy the given requirements?（）

A./24

B./26

C./27

D./28

参考答案：C

第10题：

You have 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

参考答案：C

You have been allocated a /22 network.How many usable hosts are available?（）A、510B、512C、1022D、1024

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