Question

Which two of the following hosts on a corporate intranet are on the same subnet?

a. 192.168.1.10
b. 192.168.2.20
c. 10.0.0.5
d. 10.0.1.5

Answer 1

Assuming default subnet masks, hosts 10.0.0.5 and 10.0.1.5 are on the same subnet because they share the same network identifier with a Class A default subnet mask.

Step-by-step explanation:

To determine which two hosts on a corporate intranet are on the same subnet, we need to look at the IP addresses and the subnet mask. With the IP addresses provided:

• 192.168.1.10
• 192.168.2.20
• 10.0.0.5
• 10.0.1.5

For the IP addresses to be in the same subnet, they need to share the same network portion of their address according to a given subnet mask. Without a subnet mask provided, we assume the default subnet masks for the respective classes (Class C for 192.168.x.x and Class A for 10.x.x.x).

For the Class C addresses, the default mask is 255.255.255.0, which means the first three octets (192.168.1) determine the network. Hosts 192.168.1.10 and 192.168.2.20 are on different networks due to the third octet being different.

For the Class A addresses, the default mask is 255.0.0.0. This means that only the first octet (10) is used to determine the network, suggesting hosts 10.0.0.5 and 10.0.1.5 are on the same network.

Therefore, the two hosts on the same subnet are 10.0.0.5 and 10.0.1.5, assuming default subnet masks are in use.