IP地址与子网划分练习
1) What is the network address for the address 96.2.3.16 (地址9 6 .2 .3 . 16的网络地址是什么)？
A. 96.2.0.0
B. 96.2.3.0
C. 96.0.0.0
D. Can ’t tell
2) What class of address is 190.233.27.13 (190.233.27.13是何类地址)？
A. Class A
B. Class B
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C. Class C
D. Class D
3) How many bits are in the default subnet mask for the address
219.25.23.56 (在地址219.25.23.56的默认子网掩码中有多少位)？
A. 8护士英文
B. 16
C. 24
D. 32
4) How many hosts are supported by a Class C network address, without subnetting (C类网络地址在没有子网的情况下支持多少个主机)？
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A. 254
B. 65,000
C. 255
D. 16,000
5) What is the default mask for a Class B network (B类网络的默认掩码是什么)？
A. 255.0.0.0
B. 255.255.255.0
C. 255.255.0.0.
D. 255.225.0.0
6) Approximately how many unique networks are possible with a Class B address (使用B类地址大约可以有多少个不相同的网络)？
A. 254
B. 16K
C. 65K
D. 2M
7) What is the decimal value of the binary number 11 0 0 1 0 11 (二进制数11 0 0 1 0 11的十进制值是多少)？
小孩子睡觉磨牙A. 203
B. 171
C. 207
D. 193
8) What is the binary value of the decimal number 219 (十进制数2 1 9的二进制值是多少)？
A. 111 0 1 0 11
B. 01011101
C. 111 0 1 0 11
D. 11 0 11 0 11
9) Subnet bits are added to____________to gment the network into subnets (子网位加入到____________以将网络划分为子网)？
A. The network address
B. The default subnet mask
C. The host address
D. The subnet ID
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10) If eight bits were allocated to subnetting with a Class B address, how many subnets would be possible (如果在B类地址中，将8位分配给子网，则有多少可能的子网)？
A. 62
B. 256
C. 254
D. 16K
11) Given the subnet mask 255.255.240 on a Class A address, how many bits are allocated tosubnetting (在A类地址上给定了子网掩码2 5 5 . 2 5 5 . 2
4 0，则有多少位分配给子网)？
A. 4
B. 5
C. 9
D. 12
12) If the subnet mask for the network 150.25.0.0 is 255.255.224.0, which of the is avalid host address (如果网络1 5 0 . 2 5 . 0 . 0的子网掩码是2 5 5 . 2 5 5 . 2 2 4 . 0，下面的哪一个是合法的
主机地址)？
A. 150.25.0.27
B. 150.25.30.23
C. 150.25.40.24
D. 150.25.224.30
13) What is the first subnet ID for the network 25.0.0.0 with a subnet mask of 255.192.0.0(带有子网掩码2 5 5 . 1 9 2 . 0 . 0的网络2 5 . 0 . 0 . 0的第一个子网I D是什么)？
A. 25.192.0.0
B. 25.64.0.0
C. 25.128.0.0脚底黑痣
D. 25.192.64.0
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14) What is the maximum number of subnet bits possible with a Class C address? (在C类地址下，子网位可能的最多数目是多少？ )
A. 6
B. 8
C. 14
D. 12
16) Given a subnet mask of 255.255.240, which of the address is not
a valid host address(在给定子网掩码2 5 5 . 2 5 5 . 2 4 0的情况下，这些地址中的哪一个不
是合法的主机地址)？
A. 150.150.37.2
B. 150.150.16.2
C. 150.150.8.12
D. 150.150.49.15
17) How many hosts per subnet are possible with a Class B address, if five bits are added to the default mask for subnetting (在B类地址中，每个子网有多少可用的主机，如果在默认掩码后加入了5位，以进行子网划分)？
A. 510
B. 512
C. 1022
D. 2046
18) If you were issued a Class C address, and needed to divide the network into ven subnets, with up to 15 hosts in each subnet, what subnet mask would you u (如果你遇到了一个C类地址，并且需要将网络划分为7个子网，每个子网有1 5个主机，则将使用哪个子网掩码)？
A. 255.255.255.224
B. 255.255.224
C. 255.255.255.240
D. None of the Above
24) Given an IP address of 125.3.54.56, without any subnetting, what is the network number(给定I P地址1 2 5 . 3 . 5 4 . 5 6，没有任何子网划分，网络编号是什么)？
A. 125.0.0.0
B. 125.3.0.0
C. 125.3.54.0
D. 125.3.54.32
25) The network 154.27.0.0 can support how many hosts, if not subnetted (在没有划分子网的情况下，网络1 5 4 . 2 7 . 0 . 0可以支持多少个主机)？
A. 254
B. 1024
C. 65,533
D. 16,777,206
27) What is the significance of the address 3.255.255.255 (地址3 . 2 5
5 . 2 5 5 . 2 5 5的含义是什么)？
A. It is a host number
B. It is a local broadcast
C. It is a directed broadcast
D. It is an illegal address
28) How many bits are in the default subnet mask for a Class D network (在D类网络的默认子网掩码中有多少位)？
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A. 8
B. 16
C. 24
D. None
29) A bit pattern of 1111 leading the first octet of an address would imply what class of net
work (地址的第一个8位位组以1111开头，这暗示哪类网络)？
