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

Packet filtering firewall-stateless packet filtering, Stateless Packet Filt...

Stateless Packet Filtering Stateless or static packet filtering is the most straightforward kind of packet filtering that allows or disallows data transfer based on the addres

Technology, how can you enter the ASVAB practice test on line?

how can you enter the ASVAB practice test on line?

Information asset classification-risk management, Information asset classif...

Information asset classification-risk management A number of organizations have data classification schemes (for instance confidential, internal, public data). The classificat

History, how did slavery influence life in the colonies

how did slavery influence life in the colonies

Digital certificates-cryptography, Digital Certificates Digital Certific...

Digital Certificates Digital Certificates are electronic document having key value and identifying information about entity which controls key. Digital signature which is attach

Cryptographic algorithms-cryptography, Cryptographic algorithms Cryptogr...

Cryptographic algorithms Cryptographic algorithms are broadly classified into two broad categories. They are stated below 1. Symmetric Encryption and 2. Asymmetric Encryptio

WEP-BASED AUTHENTICATION, Why is WEP-based authentication pointless?

Why is WEP-based authentication pointless?

What is network address translation, Question: (a) What is Network Add...

Question: (a) What is Network Address Translation (NAT)? Why is it used? (b) Given a following information by your ISP about your newly acquired Frame Relay connection:

Configuration for 3des, (a) Explain the two possible configuration for 3DE...

(a) Explain the two possible configuration for 3DES. (b) What is the main disadvantage of 3DES? (c) Why are most modern symmetric algorithm block ciphers? (d) Describe

Function of key secrecy and algorithm secrecy in security, What is the func...

What is the function of key secrecy and algorithm secrecy in security? Algorithm Secrecy is explained as follows: ‘Algorithm secrecy’ is a method of keeping an algorithm

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages