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Refer to the exhibit. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses?()A.255.255.255.0B.255.255.254.0C.255.255.252.0D.255.255.248.0

题目
Refer to the exhibit. Which subnet mask will place all hosts on Network B in the same subnet with the least amount of wasted addresses?()

A.255.255.255.0

B.255.255.254.0

C.255.255.252.0

D.255.255.248.0

参考答案和解析
参考答案：B
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相似问题和答案

第1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2题：

Which three IP addresses can be assigned to hosts if the subnet mask is ／27 and subnet zero is usable?()

A.10.15.32.17

B.17.15.66.128

C.66.55.128.1

D.135.1.64.34

E.129.33.192.192

F.192.168.5.63


参考答案：A, C, D

第3题：

Using a subnet mask of 255.255.255.224, which of the IP addresses below can you assign to the hosts on this subnet? (Select all that apply)

A. 16.23.118.63

B. 87.45.16.159

C. 92.11.178.93

D. 134.178.18.56

E. 192.168.16.87

F. 217.168.166.192


正确答案：CDE
C,D,E 解析：Explanation:
Since the subnet mask is 255.255.255.224, the number of network hosts that is available is 30. Every network boundary will be a multiple of 32. This means that every subnet will be a multiple (0, 32, 64, 96, 128, 160, 192, 224) and the broadcast address for each of these subnets will be one less this number (31, 63, 95, 127, 159, 191, 223).

Therefore, any IP address that does not end in one of these numbers will be a valid host IP address.
C. Valid Host in subnetwork 2 (92.11.178.64 to 92.11.178.95)
D. Valid Host in subnetwork 1 (134.178.18.32 to 134.178.18.63)
E. Valid Host in subnetwork 2 (192.168.16.64 to 192.168.16.95)

Incorrect Answers:
A. This will be the broadcast address for the 16.23.118.32/27 network.
B. This will be the broadcast address for the 87.45.16.128/27 network
F. This will be the network address for the 217.168.166.192/27 network.

第4题：

Using a subnet mask of 255.255.255.224, which of the IP addresses below can you assign to the hosts on this subnet?（）

  • A、16.23.118.63
  • B、87.45.16.159
  • C、92.11.178.93
  • D、134.178.18.56
  • E、192.168.16.87
  • F、217.168.166.192

正确答案:C,D,E

第5题：

Refer to the exhibit.A new subnet with 60 hosts has been added to the network.Which subnet address should this network use to provide enough usable addresses while wasting the fewest addresses?()

A.192.168.1.56/27

B.192.168.1.64/26

C.192.168.1.64/27

D.192.168.1.56/26


参考答案：B

第6题：

You work as network consultant. Your customer, TestKing Inc, has a class C network license. TestKing wants you to subnet the network to provide a separate subnet for each of its 5 departments. Each subnet must support at least 24 hosts.Which network mask should you use?（）

A.255.255.255.192

B.255.255.255.224

C.255.255.255.240

D.255.255.255.248

E.255.255.255.252

F.255.255.255.254


参考答案：B

第7题：

Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts?()

A.15.234.118.63

B.92.11.178.93

C.134.178.18.56

D.192.168.16.87

E.201.45.116.159

F.217.63.12.192


参考答案：B, C, D

第8题：

Your ISP has assigned you the following IP address and subnet mask:

IP address: 199.141.27.0

Subnet mask: 255.255.255.240

Which of the following addresses can be allocated to hosts on the resulting subnet?

(Select all that apply)

A. 199.141.27.2

B. 199.141.27.175

C. 199.141.27.13

D. 199.141.27.11

E. 199.141.27.208

F. 199.141.27.112


正确答案：ACD
A,C,D 解析：Explanation:
IP address = 11001000.10001101.00011011.00000000 = 199.141.27.0
Subnet mask = 11111111.11111111.11111111.11110000 = 255.255.255.240
Subnet # = 11001000.10001101.00011011.00000000 = 199.141.27.0
Broadcast = 11001000.10001101.00011011.00001111 = 199.141.27.15
The valid IP address range = 199.141.27.1 - 199.141.27.14

第9题：

Refer to the diagram. All hosts have connectivity with one another. Which statements describe the addressing scheme that is in use in the network? ()

A.The subnet mask in use is 255.255.255.192.

B.The subnet mask in use is 255.255.255.128.

C.The IP address 172.16.1.25 can be assigned to hosts in VLAN1

D.The IP address 172.16.1.205 can be assigned to hosts in VLAN1

E.The LAN interface of the router is configured with one IP address.

F.The LAN interface of the router is configured with multiple IP addresses.


参考答案：B, C, F

第10题：

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the max number of subnets.Which network address and subnet mask meet this requirement?（）

  • A、192.168.252.8 255.255.255.248
  • B、192.168.252.8 255.255.255.252
  • C、192.168.252.16 255.255.255.240
  • D、192.168.252.0 255.255.255.252
  • E、192.168.252.16 255.255.255.252

正确答案:A

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