State about CSMA/CA, Computer Engineering

Assignment Help:

State about CSMA/CA

It belongs to a class of protocols known as multiple access methods. CSMA/CA  stands  for:  Carrier  Sense  Multiple  Access  with  Collision Avoidance.  In  CSMA,  a  station  willing to  transmit  has  to  first  listen  to  channel for a predetermined amount of time so as to check for any activity on channel.  If  channel  is  sensed  "idle"  then  station  is  permitted  to transmit.  If  channel  is  sensed  as  "busy"  station  has  to  defer  its transmission.  This  is  essence  of  both  CSMA/CD  and  CSMA/CA.  In CSMA/CA  (Local  Talk),  once  channel  is  clear,  a  station  transmits a  signal telling all other stations not to transmit, and then sends its packet. In Ethernet 802.3, station continues to wait for a time, and checks to see if channelis still free. If it is free, station transmits, and waits for an acknowledgment signal that packet was received.

 

 


Related Discussions:- State about CSMA/CA

Explain about iframe, Q. Explain about IFRAME? is an HTML 4.0 addition...

Q. Explain about IFRAME? is an HTML 4.0 addition to frames toolbox. Presently only MSIE supports . Unlike frames created employing and

What is the difference among conventional and HD T.V, a. Write down the sal...

a. Write down the salient difference among conventional T.V. and High Definition TV (HDTV) and also highlight the various benefits of digital representation for video. b. Video

Example of variables and quantifiers - first-order logic, Example of Variab...

Example of Variables and quantifiers: We should have started with something such which reflects the fact that we're really talking for some meal at the Red Lion, neverthe

Explain the term- viruses, Explain the term- Viruses Use of firewalls a...

Explain the term- Viruses Use of firewalls and ant-virus software to prevent viruses entering a computer. It's also sensible not to open attachments/emails from "unknown" sourc

Define range which a normalised mantissa can signify, Now let's define rang...

Now let's define range which a normalised mantissa can signify. Let's presume that our present representations has normalised mantissa so left most bit can't be zero so it has to b

Enumerate the design reusability of vhdl, Enumerate the Design reusability ...

Enumerate the Design reusability of VHDL VHDL.  Functions  and  Procedures  may  be  placed  in  a  package  so  that  they  are  available  to  any design-unit which wishes t

Use of large register file, Generally the register storage is faster than c...

Generally the register storage is faster than cache andmain memory. Also register addressing uses much shorter addresses than addresses for cache and main memory. Though the number

What do conditional assignments get inferred into, What do conditional assi...

What do conditional assignments get inferred into? Conditionals  in  a  continuous  assignment  are  specified  through  the  "?:"  operator.  Conditionals  get inferred into a

Explain digital signatures, Digital Signatures. A digital signature is ...

Digital Signatures. A digital signature is an electronic rather than a written signature that can be used by someone to validate the uniqueness of the sender of a message or of

What are the advantages of code optimization, What are the advantages of co...

What are the advantages of code optimization? Code optimization tends at enhancing the execution efficiency of a program. It is achieved in two manners. Redundancies in a progr

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