Networking Concepts

Wireless Networking

·         Wireless networks are replacing the wired networks rapidly.

·         The components are

o   Wireless router.

o    Access points.

o    PCMCIA LAN cards.

DHCP

·         Dynamic host configuration protocol

·         We know that a unique IP address is a must for communication in LAN, WAN or internet. Assume you are given the task to assign IP addresses to the 10,000 computers in a network.

·         DHCP assigns the unique IP addresses to all the computers from a given range.

·         There is an administrative control and you can block, assign, lease, renew, and specify duration for the IP address

·         You also do the many other administrative tasks on the DHCP.

DNS

·         Domain name system.

·         DNS translates the host name into the IP address and IP address into the host name.

·         One thing is clear that the communication in a networking is based on the IP addresses.

·         Assume that the

o   IP address 120.1.1.1 is assigned to www.yahoo.com

o   IP address 12.1.2.3 is assigned to www.google.com

o   IP address 35.22.32.5 is assigned to www.msn.com

·         IP addresses are actually difficult to remember and domain names are easy so every IP address on the internet is associated with a domain name.

Wi-Fi

·         Wireless fidelity is a base band wireless networking technology.

·         It provides high speed internet connectivity to the offices and home users.

Wi-Max

·         Wi-Max is an advance broadband wireless network technology.

·         It provides very high speed up to 70 Mbps.

·         Wi-Max is designed for the corporate office, roaming and home users.