802.11 wireless lans and csma/ca, Computer Network Security

Assignment Help:

 

802.11 WIRELESS LANs AND CSMA/CA:

 IEEE 802.11 is standard wireless LAN that needs radio signals at 2.4GHz. Its speed is 11Mbps. The older computers use radio signals at data rate of 2Mbps and 900MHz. Bluetooth specifies a wireless LAN for short places. It needs shared medium and radio signals instead of coaxial cable.

LIMITED CONNECTIVITY WITH WIRELESS:

 In contrast with wired LANs, not all methods can be able to reach each other.Because:

  • It has low signal power.
  • In wireless LANs the propagation is stopped by walls etc.
  • It can't relay on CD to avoid interference because not all participants can hear.

This is given in the figure below:

 

1546_802.11 WIRELESS LANs AND CSMA.png


Related Discussions:- 802.11 wireless lans and csma/ca

Wan architecture and wan service, MegaCorp INC. is a large manufacturing f...

MegaCorp INC. is a large manufacturing firm that operates 5 factories in Dallas, 4  factories in Los Angeles, and 5 factories in Albany, New York.  It operates a tightly  connected

Tomcat server, how to access tomcat by internet

how to access tomcat by internet

For providing the security, There are various benefits related with providi...

There are various benefits related with providing the security. They are given below,  (i)  Confidentiality/ Privacy (ii)  Integrity  (iii) Availability (iv)Authenticatio

Non-repudiation and auditing, Proof that the sender forwards the message. I...

Proof that the sender forwards the message. It also prohibits the author of the code from falsely denying that he forward the message. This is achieved by record using the exact ti

Systems development life cycle security-information security, The Role of t...

The Role of the Investigation The first phase, investigation is the most significant. What problem is the system being developed to solve? During investigation phase, objectives

Ip address, How to find an ip address?

How to find an ip address?

What are the intermediate systems and how they work, Question: a) Expla...

Question: a) Explain what the following intermediate systems are and how they work? i. Repeater ii. Bridge b) A service is formally specified by a set of primitives (op

Semester 2, Do you have assignment solutions for CCE UPES MBA for oil and g...

Do you have assignment solutions for CCE UPES MBA for oil and gas semester 2

What is feedforward multilayer perceptron neural network, Question: (a)...

Question: (a) Explain and illustrate with a drawing the three-layer feedforward multilayer perceptron neural network. (b) Summarize the standard backpropagation algorithm in

Explain belady''s anomaly, Belady's Anomaly Also known FIFO anomaly. G...

Belady's Anomaly Also known FIFO anomaly. Generally, on raising the number of frames given to a process' virtual storage, the program execution is faster, because lesser page

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