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प्रश्न
Explain briefly two commonly used applications of the ‘Internet’.
उत्तर
Applications of the Internet:
1. E-mail: It allows the exchange of text or graphic material. One can write a letter and send it to the other person (recipient) through an internet service provider (ISP). The ISP works like the dispatching and receiving post office.
2. File transfer: A program known as the file transfer program (FTP) allows the transfer of files or software from one computer to the other computer connected to the Internet.
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संबंधित प्रश्न
Draw a block diagram of generalized communication system.
Draw a neat, labelled block diagram for a generalised communication system.
The figure given below shows the block diagram of a generalized communication system. Identify the element labelled 'X' and write its function.
Write two basic modes of communication
Any device that converts one form of energy into another is termed as ______.
(A) amplifier
(B) transducer
(C) receiver
(D) demodulator
Distinguish between a transducer and a repeater.
Write, giving a reason, the frequency range used in this mode of communication of propagation.
Explain the basic concept of mobile telephoning.
Name the type of waves which are used for line of sight (LOS) communication. What is the range of their frequencies?
A transmitting antenna at the tope of a tower has a height of 20 m and the height of the receiving antenna is 45 m. Calculate the maximum distance between them for satisfactory communication in LOS mode. (Radius of the Earth = 6.4 × 106 m)
Mention the function of any two of the following used
(i) Transducer
(ii) Repeater
(iii) Transmitter
(iv) Bandpass Filter
