Related Questions

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
When two computers communicate with each other, they send information back and forth. If they are separated by a reasonable distance, they can send and receive the information through a direct cable connection which is called a null-modem connection. Presently what is the maximum distance in metres permitted in this null-modem connection?
A 80
B 100
C 30
D 150
E None of the above
Digital computers are more widely used as compared to analog computers, because they are
A Less expensive
B Always more accurate and faster
C Useful over wider ranges of problem types
D Easier to maintain
A special lottery is to be held to select the student who will live in the only deluxe room in a dormitory . There are 100 seniors, 150 juniors and 200 sophomres who applied. Each senior's junior's name , 2 times; and each sophomres who applied. Each senior's name is placed in the lottery 3 times; each junior's name ,2 times name, 2 times ; and each sphomore's name , 1 time . What is the probability that a senior's name will be chosen?
A 18
B 38
C 48 
D 28
Two computers that communicate with each other use a simple parity check to detect errors for ASCII transmissions. Which of the following events will always lead to an undeleted error?
A one bit or any odd number of bits inverted in a block of data during transmission
B two bits or any even number of bits inverted in a block during transmission
C one bit or any odd number of bits inverted in a byte during transmission
D two bits or any even number of bits inverted in a byte during transmission
E None of the above
What do we call a collection of two or more computers that are located within a limited distance of each other and that are connected to each other directly or indirectly?
A Inernet
B Interanet
C Local Area Network
D Wide Area Network
Sales persons and other employees of the company who spend much of their time away from their offices but keep in touch with their company's microcomputers or main frame computers over telephone lines are called
A field workers
B telecommuters
C teleprocessors
D company directors
E None of the above
When they had a meeting seven company executives __ T, U, V, W, X, Y and Z ___ sit at a rectangular table .Three executives sit along one side of the table , and three sit along the other side, each directly opposite one of the other three. The seventh sits at the head of the table . There is no seat at the foot of the table . Ualways sits in one of te two seats farthest from the head of the table. Y and V always sit next to each other .V never sits next to Z . If Z does not sit at the head of the table, W sits there. If W sits directly opposite T, X must sit next to which of the following excutives?
A T
B U
C V
D Z
If we want to connect a few computers in a small office, all the computers in one building, or all the computers in several buildings in close proximity, which type of network is required?
A PAN
B LAN
C MAN
D SAN
In a shipment of computers, 1% of the computers are defective. What is the ratio of defective to non-defective computers?
A 1 : 200
B 1 : 100
C 1 : 99
D 99 : 1

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