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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 25
题目
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.
相似考题
参考答案和解析
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.
更多“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 25”相关问题
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第1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
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第2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
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第3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
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第4题：
You have a class C network, and you need to design it for 5 usable subnets with each subnet handling a minimum of 18 hosts each. Which of the following network masks should you use?（）
- A、225.225.224.0.
- B、225.225.240.0.
- C、225.225.255.0.
- D、255.255.255.224
- E、225.225.255.240
正确答案:D -
第5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6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
正确答案:C -
第7题：
You have a class B network with a 255.255.255.0 mask. Which of the statements below are true of this network?（）
- 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:A,D -
第8题：
You have been allocated a /22 network. How many usable hosts are available?（）
- A、510
- B、512
- C、1022
- D、1024
正确答案:C -
第9题：
单选题A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）A255.255.240.0
B255.255.248.0
C255.255.252.0
D255.255.254.0
E255.255.255.0
F255.255.255.192
正确答案： B解析： 暂无解析 -
第10题：
单选题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?（）A2 hosts
B120 hosts
C126 hosts
D255 hosts
正确答案： C解析： 暂无解析 -
第11题：
单选题The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?（）A1 network with 254 hosts
B4 networks with 128 hosts
C2 networks with 24 hosts
D6 networks with 64 hosts
E8 networks with 36 hosts
正确答案： E解析： 暂无解析 -
第12题：
单选题You have been allocated a /22 network. How many usable hosts are available?（）A510
B512
C1022
D1024
正确答案： D解析： 暂无解析 -
第13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
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第14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.
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第15题：
A network administrator is planning a network installation for a large organization.The design requires 100 separate subnetworks,so the company has acquired a Class B network address.What subnet mask will provide the 100 subnetworks required, if 500 usable host addresses are required per subnet?（）
A. 255.255.240.0
B. 255.255.248.0
C. 255.255.252.0
D. 255.255.254.0
E. 255.255.255.0
F. 255.255.255.192
参考答案：D
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第16题：
The IP network 210.106.14.0 is subnetted using a /24 mask. How many usable networks and host addresses can be obtained from this?（）
- A、1 network with 254 hosts
- B、4 networks with 128 hosts
- C、2 networks with 24 hosts
- D、6 networks with 64 hosts
- E、8 networks with 36 hosts
正确答案:A -
第17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 -
第18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 -
第19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
正确答案:A -
第20题：
多选题You have a class B network with a 255.255.255.0 mask. Which of the statements below are true of this network?（）AThere are 254 usable subnets.
BThere are 256 usable hosts per subnet.
CThere are 50 usable subnets.
DThere are 254 usable hosts per subnet.
EThere are 24 usable hosts per subnet.
FThere is one usable network.
正确答案： B,D解析： 暂无解析 -
第21题：
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 addresses will there be per subnet?（）A510
B1022
C2046
D8190
正确答案： A解析： 暂无解析 -
第22题：
单选题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? （）A64 network and 4 hosts
B4 network and 64 hosts
C2 network and 62 hosts
D62 network and 2 hosts
正确答案： A解析： 暂无解析 -
第23题：
单选题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?（）A10 hosts
B14 hosts
C12 hosts
D16 hosts
正确答案： B解析： 暂无解析