What is protocol data unit, Computer Networking

Assignment Help:

What is Protocol Data Unit?

The data unit in the LLC level is known as the protocol data unit (PDU). The PDU having of four fields a destination service access point (DSAP), a source service access points (SSAP), a control field and an information field. DSAP, SSAP are addresses used by the LLC to recognize the protocol stacks on the receiving and sending machines that are produce and using the data. The control field specifies whether the PDU frame is an information frame (I - frame) or a supervisory frame (S - frame) or a unnumbered frame (U - frame).  

 


Related Discussions:- What is protocol data unit

Explain logical ring physical star topology, Explain Logical Ring Physical ...

Explain Logical Ring Physical Star topology for Token-Passing Standard. It is definite that any break in the ring at any point will interrupt communications for all machines.

Media, explain history of internet?

explain history of internet?

Combine subtitution and transposition, how to own cipher to encrypt and dec...

how to own cipher to encrypt and decrypt message by combine both substitution ans transposition algorithm using c program

What is beaconing, Normal 0 false false false EN-IN X...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Describe mail access protocols, Q. Describe Mail Access Protocols? Mai...

Q. Describe Mail Access Protocols? Mail Access Protocols - Used by receiver to retrieve mail when desired - Post Office Protocol, version 3 (POP3) is a simple limited

Program to load the router with the supplied scripts-ccna, Load the Router ...

Load the Router with the Supplied Scripts Enable ! config term ! hostname Router1 ! enable secret class ! no ip domain-lookup !  interface FastEth

Bridge - network layer and routing , Bridge A bridge  operation sin bo...

Bridge A bridge  operation sin both  physical  and data link  layer of OSI model. At physical  layer  it works  like  repeater as it regenerates the  signal  and performs  int

Show the refraction and reflection in Fiber-optic cable , Q. Show the Refra...

Q. Show the Refraction and Reflection in Fiber-optic cable ? - Refraction often takes place when light bends as it passes from one medium to another less dense medium - Wh

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