子网划分专项练习

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1、子网划分专项练习1. What valid host range is the IP address 172.16.10.22 255.255.255.240 a part of? （在172.16.10.22 255.255.255.240这个网络里，有效IP地址的范围是？）A. 172.16.10.20 through 172.16.10.22 B. 172.16.10.1 through 172.16.10.255 C. 172.16.10.16 through 172.16.10.23 D. 172.16.10.17 through 172.16.10.31 E. 172.16.10.

2、17 through 172.16.10.30 2. What is the broadcast address of the subnet address 172.16.8.159 255.255.255.192?（在172.16.8.159 /255.255.255.192这个网络里，广播地址是？）A. 172.16.255.255 B. 172.16.8.127 C. 172.16.8.191 D. 172.16.8.255 3. What is the broadcast address of the subnet address 192.168.10.33 255.255.255.2

3、48? （在192.168.10.33 / 255.255.255.248这个网络里，广播地址是？）A. 192.168.10.40 B. 192.168.10.255 （192.168.10.23）C. 192.168.255.255 D. 192.168.10.39 4. If you wanted to have 12 subnets with a Class C network ID, which subnet mask would you use? （对一个C类网络，要划分出12个子网，那么，划分后的子网掩码是？）A. 255.255.255.252 B. 255.255.255.2

4、48 C. 255.255.255.240 D. 255.255.255.255 5. If you need to have a Class B network address subnetted into exactly 510 subnets, what subnet mask would you assign? （对一个B类网络进行子网划分，要划分出510个子网，则子网掩码是？）A. 255.255.255.252 B. 255.255.255.128 C. 255.255.255.0 D. 255.255.255.192 6. If you are using a Class C n

5、etwork ID with two subnets and need 31 hosts per network, which of the following masks should you use? （对于一个C类网络，要划分出两个子网，每个子网里有31台计算机，则子网掩码是？）A. 255.255.255.0 B. 255.255.255.192 C. 255.255.255.224 D. 255.255.255.248 7. How many subnets and hosts can you get from the network 192.168.254.0/26? （把默认的C

6、类网络划分为192.168.254.0/26，则能获得多少个子网，每子网里有多少主机）A. 4 networks with 64 hosts B. 2 networks with 62 hosts C. 254 networks with 254 hosts D. 1 network with 254 hosts 8. You have the network 172.16.10.0/24. How many subnets and hosts are available? （对B类地址进行了划分，划分为172.16.10.0/24，则可用的子网数和主机数是多少？）A. 1 subnet wi

7、th 10 hosts B. 1 subnet with 254 hosts C. 192 subnets with 10 hosts D. 254 subnets with 254 hosts 9. What mask would you assign to the network ID of 172.16.0.0 if you needed about 100 subnets with about 500 hosts each? （对于172.16.0.0，如果你需要100个子网，每子网500台主机，则掩码是什么？）A. 255.255.255.0 B. 255.255.254.0 C.

8、255.255.252.0 D. 255.255.0.0 10. You have a Class C 192.168.10.0/28 network. How many usable subnets and hosts do you have? （现有一个网络ID192.168.10.0/28，则有多少可用的子网和主机？）A. 16 subnets, 16 hosts B. 14 subnets, 14 hosts C. 30 subnets, 6 hosts D. 62 subnets, 2 hosts 11. You have the network 192.168.10.0/24. H

9、ow many subnets and hosts are available? （现在网络ID为192.168.10.0/24，则有多少可用的子网和主机？）A. 1 subnet with 10 hosts B. 1 subnet with 254 hosts C. 192 subnets with 10 hosts D. 254 subnets with 254 hosts 12. You have a 255.255.255.240 mask. Which two of the following are valid host IDs? （有子网掩码255.255.255.240，则下面

10、哪两个是有效的IP地址？）A. 192.168.10.210 B. 192.168.10.32 C. 192.168.10.94 D. 192.168.10.112 E. 192.168.10.127 13. You have a Class B network ID and need about 450 IP addresses per subnet. What is the best mask for this network? （现在一个B类网络，要对其进行划分，要求每个子网里有450台主机，则最合适的子网掩码是？A. 255.255.240.0 B. 255.255.248.0 C.

11、255.255.254.0 D. 255.255.255.0 14. Which of the following is a valid host for network 192.168.10.32/28? （对于网络192.168.10.32/28，下面哪个IP地址是属于此网络的合法IP地址？）A. 192.168.10.39 B. 192.168.10.47 C. 192.168.10.14 D. 192.168.10.54 15. What is the valid host range that host 192.168.10.22/30 is a part of? （现有主机的IP地址192.168.10.22/30，那么，这个IP地址属于下面哪个网络？）