Question 1

What is CIDR notation?

Accepted Answer

CIDR (Classless Inter-Domain Routing) notation uses a slash followed by a number (e.g., /24) to indicate the number of bits in the subnet mask. /24 means the first 24 bits are the network portion, leaving 8 bits for hosts (254 usable hosts).

Question 2

What is the difference between network and broadcast address?

Accepted Answer

The network address is the first address in a subnet (all host bits are 0) and identifies the network itself. The broadcast address is the last address (all host bits are 1) and is used to send data to all hosts on the subnet.

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