UGC NET CSE | December 2019 | Part 2 | Question: 53

Question

Which of the following class of $\text{IP}$ address has the last address as $223.255.255.255$?

• A. Class $A$
• B. Class $B$
• C. Class $C$
• D. Class $D$

Answer 1

option c is the correct answer.

Here first octet address value=223 which belongs to class-C.

class A---0-127 

class B—128-191

class C---192-223

class D---224-239

class E---240-255

Reference:

http://www.idc-online.com/technical_references/pdfs/data_communications/Ip_Address_Class.pdf

Answer 2

Table below shown the range of IP address network: 

IP Address Range	Class of network
$0.0.0.0-127.255.255.255$	Class $A$
$128.0.0.0-191.255.255.255$	Class $B$
$192.0.0.0-223.255.255.255$	Class $C$
$224.0.0.0-239.255.255.255$	Class $D$

From above table IP address $223.255.255.255 \in$ Class $C$ network.

Option $(3)$ is correct.