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Q. How is computer networks used in teleconferencing?
Teleconferencing: Teleconferencing allows conference to happen without the participants being in the same place. Applications add simple text conferencing (where participants communicate through their normal monitor and keyboards) and video conferencing where participants will even see as well as talk to other fellow participants. Different kinds of equipments are used for video conferencing depending on what quality of the motion you need to capture (whether you want just to see the face of other fellow participants or do you need to see the exact facial expression).
Explain Radio Wave. Although Radio waves are common and well understood, we are just starting to realize their enormous potential as a networking medium. Radio waves can operat
POWER SUPPLY SYSTEM IN SATELLITE SYSTEM Satellite Earth Station relies on the public power supply system. Two generators (1+1) of 250 KVA each in parallel connection having fa
Q. Explain the Public-Key Cryptography? Public-Key Cryptography - Each user has the same encryption algorithm and key - Decryption algorithm also key are kept secret
As discussed in the earlier section each computer linked to the Internet has a unique address. Let's assume your IP address is 1.2.3.4 & you wish to send a message to the computer
What is the full form of FDM and TDM It is both. Each of the 100 channels is possess its own frequency band (FDM), and on every channel two logical streams are intermixed by th
Physical Media In order to define what is meant by a physical medium let us reflect on the brief life of a bit. Consider a bit travelling from one end system through a serie
Q. Explain the Types of Security Service? Security Services fall into one of the subsequent categories - Confidentiality: Confirms that the info in a system and transm
ETHERNET FIELDS: In Ethernet fields the preamble and CRC is usually not given in frame. The destination address of each is the broadcast address. There is special value reser
Dual Homed Host Architecture This setup consists of a host machine with two or more IP addresses for each of its physical port. One port is connected to intranet and other to the
What is Stop-and-Wait Automatic Repeat Request? Error correction in Stop-and-Wait ARQ is implemented by keeping a copy of the sent frame and retransmitting of the frame when th
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