COMPUTER NETWORKING

WIRELESS NETWORKS AND MOBILE IP

INTRODUCTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
____ is used by many companies to hide internal resources and to use only some globally available addresses
A
Firewalls
B
Network Address Translation
C
Home Agent address
D
Unicast routing
Explanation: 

Detailed explanation-1: -The NAT translates internal network addresses into globally unique IP addresses. NATs can hide the internal network and only show one outside IP address for the internal network to the outer Internet.

Detailed explanation-2: -For example a computer on an internal address of 192.168. 1.10 wanted to communicate with a web server somewhere on the internet, NAT would translate the address 192.168. 1.10 to the company’s public address, lets call this 1.1. 1.1 for example.

Detailed explanation-3: -PAT (Port Address Translation): Most home networks use PAT. Thousands of users can be connected to the internet by using one public address.

There is 1 question to complete.