Difference between Wifi and WiMax ????

What is subnet?

A generic term for section of a large networks usually separated by a bridge or router.

What is SAP?

Series of interface points that allow other computers to communicate with the other layers of network protocol stack.

What is difference between ARP and RARP?

The address resolution protocol (ARP) is used to associate the 32 bit IP address with the 48 bit physical address, used by a host or a router to find the physical address of another host on its network by sending a ARP query packet that includes the IP address of the receiver.

The reverse address resolution protocol (RARP) allows a host to discover its Internet address when it knows only its physical address.

What is attenuation?

The degeneration of a signal over distance on a network cable is called attenuation.

Difference between the communication and transmission?

Transmission is a physical movement of information and concern issues like bit polarity,

synchronization, clock etc. Communication means the meaning full exchange of information between two communication media.

What is IPSec?

Short for IP Security, a set of protocols developed by the IETF to support secure exchange of packets at the IP layer.

You are in home. But you need to access the office server router. How can you do that?

By using "Telnet" or "SSH".

What is PING utility?

PING stands Packet Internet Gopher. This is a utility for ensuring connectivity between computers . ICMP protocol works behind this utility. Under it , sending node sends packets to destination node and reply is received if there is proper communication between two.

What is Wifi & WiMax?

Simply

Wi Fi or wireless fidelity is a base band network technology that is used for the wireless data

communication.

Wi-Fi is a shorter range system, typically hundreds of meters, that uses unlicensed spectrum to provide access to a network, typically covering only the network operator’s own property. Typically Wi-Fi is used by an end user to access their own network, which may or may not be connected to the Internet. If WiMAX provides services analogous to a cellphone, Wi-Fi is more analogous to a cordless phone.

Wi Fi is a next form of the Wi fi. Wi max is a very high speed broadband network technology that is designed for the corporate offices, roaming and home users.

WiMax is a long range system, covering many kilometers, that uses licensed and unlicensed to deliver a point-to-point connection to the Internet from an ISP to an end user. Different 802.16 standards provide different types of access, from mobile (analogous to access via a cellphone) to fixed (an alternative to wired access, where the end user’s wireless termination point is fixed in location.)

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