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

Packets and frames, PACKETS: Packet is a generic word that define to sma...

PACKETS: Packet is a generic word that define to small code of data. Packet have different format. Each hardware needs different packet format. FRAME: A hardware frame or

Typical network management system, Problem 1: List measurable entities ...

Problem 1: List measurable entities on which the quality of service in a data communication network depends Problem 2: Show the features of a typical Network Management

Explain transposition ciphers and substitution cipher, What do you understa...

What do you understand by cryptanalysis? Discuss about the transposition ciphers substitution cipher, and onetime pads. The messages which are intended to transmit secretly and

Threads and attacks-information security, THREADS AND ATTACKS Threat is ...

THREADS AND ATTACKS Threat is an object, person, or other entity which represents a constant danger to an asset. To make sound decisions about information security, management s

Softbank theft of consumer data -information security, Example : Softbank –...

Example : Softbank – theft of consumer data for extortion Softbank of Japan offers broadband Internet services across Japan through 2 subsidiaries – Yahoo! BB and Softbank BB. I

What is the major security flaw of set, QUESTION (a) Discuss why it is ...

QUESTION (a) Discuss why it is considered more secure to use the SET (Secure Electronic Transaction) for e-commerce instead of using SSL (b) Describe how the dual signature

Cracking the Vigenere Cipher, The following message was enciphered with a V...

The following message was enciphered with a Vigenère cipher. aikiaawgfspxeppvjabjnivulfznzvkrlidamsmyamlvskniyffdpbwtnxsvvbtnamvltsefoeycztkomylmerkwrs deusjgecmzkwvnreeyp

Illustrate the label switching procedure in an mpls network, QUESTION ...

QUESTION a) Explain the terms traffic engineering, class-based queuing, shaping and grooming in an MPLS network. b) Using an example topology, illustrate the label swi

Guided media, Guided Media These are those that give a conduit from on...

Guided Media These are those that give a conduit from one machine to another that add twisted-pair, fiber-optic cable and coaxial cable. A signal traveling along any of these

Venn Diagram Problem, Students were asked about search engine they used.90 ...

Students were asked about search engine they used.90 of them said they used google chrome,70 used Internet Explorer,40 used Mozilla Firefox,30 used Google Chrome and Internet Explo

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages