Cisco CCNA mock exam questions sample test – Question 151

.Which of the following statements are true of Class C IP addresses?

A. The decimal values of the first octet can range from 192 to 223
B. The decimal values of the first octet can range from 1 to 126
C. The first octet represents the entire network portion of the address
D. The first three octets represent the entire network portion of the address
E. The value of the first binary place in the first octet must be 0
F. The value of the first two binary places in the first octet must be 11

Correct Answer: ADF

Explanation:
A class C IP addresses will have the following characteristics:
The decimal values of the first octet can range from 192 to 223
The first three octets represent the entire network portion of the address
The value of the first two binary place in the first octet must be 11
Class B IP addresses will have the following characteristics:
The decimal values of the first octet can range from 128 to 191
The first two octets represent the entire network portion of the address
The value of the first two binary place in the first octet must be 10
Class A IP addresses will have the following characteristics:
The decimal values of the first octet can range from 1 to 126
The first octet represents the entire network portion of the address
The value of the first binary place in the first octet must be 0
Objective:
Network Fundamentals
Sub-Objective:
Compare and contrast IPv4 address types
References:
Cisco > IP Routing > IP Addressing and Subnetting for New Users