Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
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Chapter 4, Problem P16P

a.

Program Plan Intro

Internet Service Provider (ISP):

An internet service provider is a technique that includes the accessing service over the internet. With involvement of ISPs in the Google network, the data centres mostly use lower-level tier than the upper-level tier to create the website.

b.

Program Plan Intro

Network Address Translation (NAT):

  • NAT is a method which is used to connect numerous numbers of computers to the internet using a single Internet Protocol (IP) address.
  • It offers the home users who using multiple computers which are used by the family members at home to connect with the internet and small businesses a cheap and efficient internet connections.
  • Usually, most of the companies use more than one router to connect with the internet.
  • But after installing NAT, the mapping is kept only at a single router. Thus, it is essential to use a same router to connect with the internet.
  • Multi-homing with more routers using NAT can be done by using the same router for a single connection and thus mapping is done properly.

Transmission Control Protocol (TCP):

  • TCP is an internet protocol used for exchanging of data between the sender and the receiver. It is a secured protocol for transferring the data.
  • When the sender sends data to the receiver, he/she waits for the acknowledgement from the receiver.
  • If acknowledgement is received then the next data packet will be sent and the process continues till all the data packets are sent.
  • If acknowledgement is not received then the receiver is assumed as hacker or intruder and the connection will be removed.

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