Subnetting Test Questions

Subnetting Made Easy
1. Which of the following statements would best describe following the IP address and subnet?

192.192.192.56
255.255.255.240
This is a Class B address that is masking 12 bits for subnetting, yielding 14 valid subnets.  
 
The subnet mask is borrowing 4 host bits which creates 14 usable subnets with 14 usable hosts per subnet.  
 
This is a Class C address that is using 4 host bits which creates 16 usable subnets with 16 usable hosts per subnet.  
 
This is a Class C address that is using 4 host bits which creates 14 subnets with 14 hosts per subnet.  

2. Which of the following subnet masks would offer 8 usable subnets, with a minimum of 2000 usable hosts per subnet? We have been assigned the IP address in the exhibit. Choose the best answer.

Exhibit
200.200.0.0
255.248.0.0  
 
255.224.0.0  
 
255.255.240.0  
 
255.255.192.0  

3. Client 1, client 3 and client 4 can communicate with Server B and Server A. Client 2 and client 5 cannot communicate with the either server. Yesterday there was not any problem with this communication.
You use the ping utility as seen below.
C:\>ping 172.17.20.35
Pinging 172.17.20.35 with 32 bytes of data:
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.
Destination host unreachable.

Which of the following would be the best explanation for the failed communication. Choose the best answer. Exhibit
The configuration of the router is incorrect.  
 
The subnet mask for clients 2 and 5 is set incorrectly.  
 
The router configuration is set incorrectly.  
 
The default gateway for the network with client 2 and client 5 is set incorrectly.  

4. Using the following IP address in the exhibit, identify which of the following statements are true. Choose the best answer.


Exhibit 12.14.14.22/22
This address and mask will yield a total of 1022 usable hosts per network, with 16,384 usable networks.  
 
This is a Class A address with 22 bits masked for subnetting, which will yield 8 host bits for a total of 1024 hosts per network, with 64 total networks.  
 
This is a Class A address that is using 14 bits for subnetting, and leaving 8 host bits.  
 
There are 22 bits masked with this Class B IP address, offering us 8 host bits for a total of 1020 hosts per network, with 64 total networks.  

5. Which of the following subnet masks would offer 18 subnets, and have the ability to add 6 per year for the next five years, with each subnet having up to 580 hosts? You have been assigned the address in the exhibit by your ISP. Choose the best answer.

Exhibit
154.78.0.0/16
255.255.224.0  
 
255.255.252.0  
 
255.255.254.0  
 
255.255.192.0  
 

6. Which of the following would be correct if we borrowed 8-bits when using the following IP information?

Exhibit
IP address 121.34.45.1
Subnet mask 255.0.0.0
A new mask of 255.255.0.0 would yield 256 usable networks with 1024 usable hosts per network.  
 
Borrowing 8 host bits would yield 254 usable networks, with 65,534 usable hosts per network.  
 
Borrowing 8 host bits would yield 256 usable networks, with 65,536 usable hosts per network.  
 
A new mask of 255.255.0.0 would yield 256 usable networks with 1024 usable hosts per network.  

7. Using the exhibit we need to troubleshoot a network communication problem.
This network was recently setup by a competitor and here it is Monday morning and you need clean up their mess.
Which of the following statements would identify the cause of the communication problem?

Exhibit
Change the Subnet mask on subnet B to a Class C range with a mask of 255.255.0.0.  
 
Change the default gateway address at the router A to 172.16.50.1 255.255.0.0  
 
Change the Gateway address a Gateway B to 192.224.30.1 255.255.255.0  
 
Change the IP configuration on Subnet A to a Class C range with a mask of 255.255.255.0.  

8. Using the exhibit at the right to troubleshoot the following network problem.
Client 1 and client 4 do not have any problems communicating with Server B and Server A.
As well Client 5 can communicate with Client 1 and Client 4, and Server A.
Client 1 and 4 cannot access the resources that are located on Client 2.
Which of the following would be the most likely cause of this communication problem?
Use the Exhibit to answer the question.
Client has a failed NIC or patch cable.  
 
The default gateway for Client 2 is set incorrectly.  
 
This appears to be a router configuration problem.  
 
Client 2 has the subnet mask set incorrectly.  

9. Using the IP address and subnet mask in the exhibit identify the addresses that are in the same subnet.

198.132.202.255
255.255.252.0
198.132.199.244  
 
198.132.204.199  
 
198.132.201.205  
 
198.132.206.198  

10. Which of the following subnet masks would offer 30 usable subnets, with a minimum of 2040 usable hosts per subnet? We have been assigned the IP address in the exhibit. Choose the best answer.

200.177.0.0
255.255.248.0  
 
255.255.224.0  
 
255.255.192.0  
 
255.240.0.0  


      Percentage:

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