220-801 Question #560: Real Exam Question with Answer & Explanation

The correct answer is C: Subnet mask. A subnet mask is a 32-bit number applied to an IP address using a bitwise AND operation to separate the network portion from the host portion. For example, a subnet mask of 255.255.255.0 indicates the first three octets identify the network and the last octet identifies the host.

Question

Which of the following properties of TCP/IP is used to differentiate the network and the host portions of an IP address?

Options

ADNS address
BDefault gateway
CSubnet mask
DDHCP lease

Explanation

A subnet mask is a 32-bit number applied to an IP address using a bitwise AND operation to separate the network portion from the host portion. For example, a subnet mask of 255.255.255.0 indicates the first three octets identify the network and the last octet identifies the host. The default gateway routes traffic outside the local network, DNS resolves hostnames, and a DHCP lease is simply the time period for which an IP address is assigned.

Community Discussion

No community discussion yet for this question.

Full 220-801 Practice