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

Header length - transport layer, Header  length This  field  speci...

Header  length This  field  specifies the  length of the TCP header  in 32 bit  words. This  information  allows  the receiver to know  the beginning of the data area becau

Explain what a digital signature is and how it works, Question: a) Out...

Question: a) Outline the concept of the Real Time Gross Settlement (RTGS) system in Mauritius and name the three main system components of the MACSS. b) Differentiate bet

What is a dns resource record, What is a DNS resource record? A resourc...

What is a DNS resource record? A resource record is an entry in a name server's database. There are various types of resource records used, containing name-to-address resolutio

Link layer process, Each link layer process will have two connections: one ...

Each link layer process will have two connections: one "up" to the appropriate IP layer process, and one "sideways" to the link layer process on the simulated machine at the other

What is data storage technology, Normally, we think of communications scien...

Normally, we think of communications science as dealing with the contemporaneous exchange of information among distant parties. Though, many of the same techniques employed in data

Discuss about the software in detail, Discuss about the Software in detail ...

Discuss about the Software in detail Software contain a number of components such as SQL Server for database connectivity, Systems Management Server for easy Web management,

What do you mean by platform independence, What do you mean by platform ind...

What do you mean by platform independence? Platform independence means that we can write and compile the java code in one platform (eg Windows) and can implement the class in a

Residential access - computer network, Residential Access Residential ...

Residential Access Residential  access is connecting home  end  systems ( typically a PC but increasingly a home network) into the network. One form  of residential  access  i

Nfs best performance, what parameters should i have for the best nfs v4 per...

what parameters should i have for the best nfs v4 performance?

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