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 the key differences between gsm and gprs networks, Question : ...

Question : a) Describe the following core components of a cellular based network: i) Cell ii) MSC iii) HLR & VLR iv) PSTN b) Explain why frequency reuse is consi

What is border gateway protocol, What is BGP (Border Gateway Protocol)? ...

What is BGP (Border Gateway Protocol)? It is a protocol used to promote the set of networks that can be reached within an autonomous system. BGP enable this information to be c

#tit, objective practical questios answers

objective practical questios answers

Identify three udp characteristics, UPD is a layer 4 Transport protocol. It...

UPD is a layer 4 Transport protocol. It is connection-less due to it does establish a connection thus the 3 step handshake is not needed, it does NOT execute any flow control or ac

State the list of protocols supported by the intranet, State the list of pr...

State the list of protocols supported by the Intranet The following is the list of protocols supported by the Intranet: ARP: Address resolution Protocol is used to resol

Name the protocol which is networking middleware, Name the protocol which i...

Name the protocol which is networking middleware SOCKS is a networking middleware: a circuit-level gateway, acting as a proxy and is placed at the session layer to mediate clie

What is the standard isdn term for a native isdn modem, TA is the standard...

TA is the standard ISDN term for a native ISDN modem

Networking, What is the implication of increasing and decreasing subnet Bit...

What is the implication of increasing and decreasing subnet Bits?

Name the standard isdn term for a native isdn modem, The marketing term 'IS...

The marketing term 'ISDN modem' was formed to help sell the ISDN idea to America. There is no such thing as an analog modulator demodulator for digital ISDN. The Terminal Adapter (

Systolic array, Systolic Array This interconnection network is a kind o...

Systolic Array This interconnection network is a kind of pipelined array architecture and it is designed for multidimensional flow of data. It is used for executing fixed algor

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