单选题You have been asked to use a 23-bit network mask to segment the network block 209.18.12.0, How many usable host address will there e per subnet?（）A 510B 1022C 2046D 8190

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单选题

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

510

1022

2046

8190

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相似问题和答案

第1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2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3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4题：

How many usable sub network and usable hosts per subnet result in the network address 201.105.13.0 is sub netted with a mask of /26? （）

A、64 network and 4 hosts
B、4 network and 64 hosts
C、2 network and 62 hosts
D、62 network and 2 hosts

正确答案:C

第5题：

Given that you have a class B IP address network range, which of the subnet masks below will allow for 100 subnets with 500 usable host addresses per subnet?

A．255.255.0.0

B．255.255.224.0

C．255.255.254.0

D．255.255.255.0

E．255.255.255.224

正确答案：C
解析：Explanation:
Using the 2n-2 formula for host addresses, 29-2 = 510 host address, so a 9-bit subnet mask will provide the required number of host addresses. If these 9 bits are used for the hosts in a class B network, then the remaining 7 bits are used for the number of networks.

Again using the 2n-2 formula, we have 2n-2 = 126 networks that are available.

Incorrect Answers:
A. This will provide for only 1 network with 216-2 = 65534 hosts
B. This will provide for 6 networks with 8190 host addresses.
D. This will provide 254 networks and 254 hosts.
E. This will provide 2046 different networks, but each network will have only 30 hosts.

第6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7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 address will there e per subnet?()

A. 510

B. 1022

C. 2046

D. 8190

参考答案：A

第8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9题：

How many usable sub network and usable hosts per subnet result in the network address 201.105.13.0 is sub netted with a mask of ／26? ()

A. 64 network and 4 hosts

B. 4 network and 64 hosts

C. 2 network and 62 hosts

D. 62 network and 2 hosts

参考答案：C

第10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

正确答案:B

单选题You have been asked to use a 23-bit network mask to segment the network block 209.18.12.0, How many usable host address will there e per subnet?（）A 510B 1022C 2046D 8190

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