Related Questions

Computers cannot communicate with each other directly over telephone lines because they use digital pulses whereas telephone lines use analog sound frequencies. What is the name of the device which permits digital to analog conversion at the start of a long distance transmission?
A Interface
B Modem
C Attenuation
D Teleprocessor
E None of the above
The computers that we use are digital whereas we live in an analog world which means that we have to translate analog data into digital data. What is the name of the circuit which helps us in this conversion?
A D/A converter
B A/D converter
C Voice recognition
D Adapter
E None of the above
Signals can be analog or digital and a computer that processes the both type of signals is known as
A Digital computer
B Hybrid computer
C Analog computer
D Mainframe computer
Compared to analog signals, digital signals
A allow faster transmission
B are more accurate
C both A and B
D All of the above
E None of the above
Consider a company that assembles computers. The probability of a faulty assembly of any computer is p. The company therefore subjects each computer to a testing process. This testing process gives the correct result for any computer with a probability of q. What is the probability of a computer being declared faulty?
A pq + (1 - p) (1 - q)
B (1 - q)p
C (1 - p)q
D pq
Messages from one computer terminal can be sent to another by using data networks. The message to be sent is converted to an electronic digital signal, transmitted via a cable, telephone or satellite and then converted back again at the receiving end. What is this system of sending messages called?
A Paperless office
B Electronic mail
C Global network
D Electronic newspaper
E None of the above
Giving is better than receiving. Here the word ‘receiving’ is a/an-
A adjective
B common noun
C gerund
D present participle
The gypsys are a tribe of strange people. They do not have any fixed home but wander about from place to place and live in tents. they were originally natives of India. But as they reached England from Egypt ,the English took them from Egyptians. this is why they came to be called gypsys. they were beloved to possess strange powers. they could tell your fortune by reading the palm of your hand. it was thought they stole little children to train them in their way of life. whenever a child got lost it was thought that it has been carried away by gypsys so they were arrested and sent for trial. but this attitude towards the Gypsy has gradually changed.The gypsies are people who ---
A have a settled way of life
B came originally from Egypt to England
C are always on the move
D steal children to train them in the way of life
Which of the following is the device used for converting maps, pictures and drawing into digital form for storage in computers?
A Image scanner
B Digitizer
C MICR
D Scanner
Which country hosted the fisrt ever G20 Digital Ministerial Meeting on Digital Ministerial on Digital Economy?
A Japan
B Germany
C Russia
D France

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