The IP address 10.1.1.1 belongs to which class of IP address space?

The correct answer is A. Class A. The IP address 10.1.1.1 belongs to Class A IP address space because its first octet falls within the Class A range.

Junos OS Fundamentals

Question

Options

AClass A
BClass B
CClass C
DClass D

How the community answered

(41 responses)

A
88% (36)
B
2% (1)
C
2% (1)
D
7% (3)

Why each option

The IP address 10.1.1.1 belongs to Class A IP address space because its first octet falls within the Class A range.

AClass ACorrect

Class A IP addresses are identified by their first octet, which ranges from 1 to 126. Since 10.1.1.1 starts with 10, it is classified as a Class A address.

BClass B

Class B IP addresses have a first octet range of 128-191.

CClass C

Class C IP addresses have a first octet range of 192-223.

DClass D

Class D IP addresses are used for multicasting and have a first octet range of 224-239.

Concept tested: IPv4 address classes

Source: https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/netsh-interface-ip-add-address

Topics

#IP addressing#IPv4 classes

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