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

What are major types of networks and explain, What are major types of netwo...

What are major types of networks and explain? Server-based network: Give centralized control of network resources and depend on server computers to give security and network

Packet processing on vpn router, Consider the site-to-site VPN scenario sho...

Consider the site-to-site VPN scenario shown in Figure 2. Let's deploy the AH protocol on the two VPN routers so that no desktop on the two sites need to do any AH operations. Assu

Difference between routable and non- routable protocols, What is the differ...

What is the difference between routable and non- routable protocols? Ans) Routable protocols can work with a router and can be used to build huge networks. Non-Routable protocol

Ppp authentication chap pap secret, As the system administrator, you type "...

As the system administrator, you type "ppp authentication chap pap secret". Name the authentication method is used first in setting up a session? Ans)  the authentication method

Example of wan technologies, Some multiple WAN methods are defined below: ...

Some multiple WAN methods are defined below: ARPANET: It start in 1960's. It was operated by Advanced Research Project Agency, which is a company of US defense department.

describe the mips instructions - computer architecture, 1.  Detail for eac...

1.  Detail for each of the four following MIPS instructions, which actions are being taken at each of their five steps.  Do not forget to mention how and during which steps each in

Explain the following: cdma and fdma, Question 1 Explain GSM digital cellu...

Question 1 Explain GSM digital cellular System model Question 2 Explain cellular Digital Packet Data(CDPD) system with the help of CDPD network reference model Question 3

Network Fundamentals, I need help in designing a network for a fictional co...

I need help in designing a network for a fictional company.

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