Protocol layering - computer network, Computer Networking

Assignment Help:

Protocol Layering

To design  structural  network protocols the designers organize protocol and use the network  hard ware and software to implement  the protocol  in layers. Each  protocol  belong to  one  of the layers just as  each  functions  in the metro  train  architecture in figure2.13 belonged to a layer. The services  that a  layer offers to the above  layer is  called  service  model  of a layer.

Protocol  layering has  conceptual and structural advantages. Layering provides a structured way to discuss system components. Modularity makes  it easier to update systems components. The  first  potential drawback of layering is that one layer may  duplicate lower layer functionality. For  example  many protocol stacks provide error  recovery on both  network basis and point to point procedures. A second  potential  drawback  is that functionality at one  layer may  need information  that is present  only in  another layer  this violates the goal of separation of layers.

The protocols of the  various  layers are called  the protocol stack.  The internet  protocol stack  consists  of five  layers the physical  link  network  transport and  application layers  respectively  as figure

  1. Application
  2. Transport
  3. Network
  4. Link
  5. Physical

 


Related Discussions:- Protocol layering - computer network

Root dns servers - application layer , Root DNS Servers A root  server...

Root DNS Servers A root  server is a serve which  consists of the entire  hierarchy  of servers. A root  server  usually  does not  store any  information  about  domains  but

Internet backbone - computer network, Internet Backbone Internet backb...

Internet Backbone Internet backbone  is the  physical  networks ( usually relying  on fiber optic  cable ) that  carries  internet  traffic between  different  networks  and i

Configure the logical topology - configure router1, Configure Router1. ...

Configure Router1. From Host1, connect to the console of Router 1 and establish a console session. Directions for creating a console connection using HyperTerminal are in Appen

Show the flow characteristics, Q. Show the Flow characteristics? Flow ...

Q. Show the Flow characteristics? Flow characteristics Reliability - if lacking means that packets or ACKs are lost - more important with FTP, SMTP than with audio

What is authentication, Q. What is Authentication ? - Verification of s...

Q. What is Authentication ? - Verification of sender's identity. - Accomplished through a digital signature, which is based on public key encryption/decryption. - Uses re

Explain the importance of authentication, Explain the importance of authent...

Explain the importance of authentication. Authentication is the method of verifying a user's credentials before he can log into the network. It is normally performed using a us

System inheritance.., what is inheritance in computer systems special permi...

what is inheritance in computer systems special permissions?

What are the working of software team, What are the working of software tea...

What are the working of software team The software team has to learn every bit of things related to computers. Since different users work on different platforms and application

Explain the OSI Model Facts, OSI Model Facts The OSI model classifies a...

OSI Model Facts The OSI model classifies and organizes the methods that hosts perform to maintain data for transport across the network. You should be familiar with the OSI m

Structure of internet servers address, In a client's software , the structu...

In a client's software , the structure of an Internet server's address keyed is as follows: Where: http refer for the communication protocol to be used www refer for th

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd