ICT Lecture 9: IP Address

ICT Lecture 9:

IP Address

An Internet Protocol address (IP address) is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. IP address has 2 parts: Network and Host part.

IP address has 5 classes:

Class	Range	Leading bit
A	1-127	0
B	128-191	10
C	192-223	110
D	224-239	1110
E	240-255	1111

The most widely used class is class C.

Format of IP address (IPv4)

The size of an IP address is a 32-bit numeric address written as four octets separated by dot. For example,

125.10.11.0 (Class A)

151.32.89.250 (Class B)

192.110.30.12  (Class C)

IPv6

It is known as Internet Protocol next generation. IPv6 addresses are 128-bit IP address written in hexadecimal and separated by colons. For example: 31e:190:455:3:1200:f8c1:ff21:67

UGC NET Previous Years Questions:

1. Computers on an internet are identified by (June 2010)

(A) e-mail address

(B) street address

(C) IP address

(D) None of the above

Answer: (C)

2. Which one of the following is not the same as the other three? (June 2014)

(A) MAC address

(B) Hardware address

(C) Physical address

(D) IP address

Answer: (D)

Description: MAC address, Hardware address and Physical address are real address assigned to a machine. The IP address is required by machine that participates in a network that uses internet protocol.

3. Identify the IP address from the following (June 2014)

(A) 300 .215.317.3

(B) 302.215@417.5

(C) 202.50.20.148

(D) 202-50-20-148

Answer: (C)