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

Explain in detail about wireless network, Explain in detail about wireless ...

Explain in detail about wireless network Think about unseen terminal problem. Imagine a wireless network consist of five stations, A through E, such that each one them is in r

Point out the drawbacks of token ring, Point out the drawbacks of Token Rin...

Point out the drawbacks of Token Ring. Few of the drawbacks of Token Ring are: a. Token Ring is very costly. All topology components cost much more than other more popular s

What is ipv6, What is IPv6? IPv6, or Internet Protocol version 6, was d...

What is IPv6? IPv6, or Internet Protocol version 6, was developed to change IPv4. At present, IPv4 is being used to control internet traffic, butis expected to get saturated in

Determine the relation between storage size and genomes, Genome4U is a scie...

Genome4U is a scientific research project at a large university in the United States. Genome4U has recently started a large-scale project to sequence the genomes of 250,000 volun

Name the default lmi type, Cisco is the defaul LMI type. There are thre...

Cisco is the defaul LMI type. There are three types of LMI standards:  ANSI - Annex D defined by ANSI standard T1.617  ITU-T (Q.933A) - Annex A defined by Q933A  Cisco

Explain twisted pair cable, Explain twisted pair cable. A pair of wires...

Explain twisted pair cable. A pair of wires twisted with each other is CALLED as twisted pair cable.  A set of four pairs of twisted wires are bundled to form cable. These are

10base-t, 10BASE-T:  This is another standard of wiring function. It i...

10BASE-T:  This is another standard of wiring function. It is usually known 10Base-T, TP Ethernet or Twisted Pair. It removes AUI cable with twisted pair cable and thick coax

Data link layer responsibilities, Q. Data Link Layer Responsibilities? ...

Q. Data Link Layer Responsibilities? - Defines frames into manageable data units - Physical addressing - Flow control - Error control - Access control Nod

Odd-even transposition algorithem, Algorithm:  Odd-Even Transposition //...

Algorithm:  Odd-Even Transposition //Input: N numbers that are in the unsorted form //Assume that element bi is assigned to pi for I=1 to N { If (I%2 != 0) //i.e Odd

computer computinons, Difference between synchronous tdm and statistical t...

Difference between synchronous tdm and statistical tdm

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