Question

Assume a host computer has the following configuration:

IP Address: 212.110.84.176

Subnet Mask: 255.255.248.0

Default Gateway: 212.110.84.1

A. Is this a Network, Subnetwork, Supernetwork or something else? How do you know?

The first octet of the IP tells us it is a class C /24 and the subnet is /21 so that means it has been supernetted? Is that correct?

B. Using CIDR notation, what is the range of the block of addresses this Host belongs to?

Answer 1

Given:
IP Address: 212.110.84.176
Subnet Mask: 255.255.248.0
Default Gateway: 212.110.84.1
A)yes, it has been supernetted, networks are combined to form a bigger network(with large hosts)
current network prefix /21
means
21 :network bits
11 : host bits
B)
first finding network address:
by peforming AND operation between IP and subnet mask
network IP: 212.110.80.0/21
range of address block:
212.110.80.1/21 to 212.110.95.254/21