CCNA IP Subnetting

CCNA Practice questions and answers on IPSubnetting

1. Which of the following statements are false

a. IP networks in the public range cannot be subnetted.
b. IP networks in the private range can be subnetted.
c. IP networks in the public range requires a subnet mask for subnetting.
d. IP networks in the private range requires a subnet mask for subnetting.

2. How many subnets would you create to setup a network where there is only 1 switch for communication.

a. 2
b. 1
c. Subnet cannot be created.
d. None of the above.

3. In a subnetted network, which IP address would be configured as the gateway for the network.

a. The first valid IP address.
b. The second last IP address.
c. The network address.
d. Any address.

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4. A router is required for communication between systems on two different subnets from a Major Network.

a. True
b. False

5. Which system on a network is configured with the broadcast address of a subnetted network.

a. Router
b. Switch
c. DHCP Server
d. None of the above.

6. If the value of a bit in the subnet mask is 0, what does it indicate.

a. The corresponding bit in the IP address is part of the network
b. The corresponding bit in the IP address is part of the host
c. It indicates the starting of the network address.
d. None of the above.

7. How many broadcast address would be available on a network which has 5 subnetted networks.

a. There would be only 1 , which is of the major network.
b. 5 for each subnetted networks
c. 6 for each , including the major network
d. None of the above.

Answers
a
b
d
a
d
b
b

Explanation

1. IP networks irrespective of belonging to public or private networks can be subnetted.

2. When there is only one switch, it is recommended to create only 1 subnet since, a router would be required for communication between systems belonging to different subnets.

3. Any IP address can be configured as the gateway address.

4. For communication between systems on different networks a router is required.

5. The broadcast address is used by the network for sending broadcast messages to all systems on the network. It is not configured on any system.

6. A value of 0 indicates the corresponding bit in the IP address belongs to the host part and 1 indicates the network part.

7. There would be 5 broadcast addresses , one for each subnet.

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