Related Questions

A woman while shopping in a mall pushes her trolley 20 metres through an alley which is going East, then she turns to her left and walks 30 metres, then she turns West and walks another 30 metres, then she turns South and walks 30 metres and then she turns West and walks 25 metres. Where is she now with reference to her starting position?
A 35 metres West
B 5 metres West
C 35 metres East
D 5 metres East
A rectangular floor that measures 8 metres by 10 metres is to be covered with carpet squares that each measures 2 metres by 2 metres. If a carpet square costs Tk. 12, calculator the total cost cover 2/3 of the floor?
A Tk. 160
B Tk. 240
C Tk. 480
D None of these
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
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
The time communicate between Bangladesh and USA is the same as that to communicate between two adjacent houses mask used should be:
A Fiber optic
B Satellite
C Twisted pair
D Radio link
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
Consider that 5 computers are connected through mesh topology in a computer network. What are the number of connection lines nende if we want to add 2 more computers in the network?
A 9
B 11
C 13
D 15
A train of length, 245 metres, takes 20 seconds to cross a 355 metres long bridge. How much time (in seconds) will the train take to cross a 390 metres long platform?
A 6.5
B 9
C 21.16
D 15
If a power cable and a communication cable are to run parallel the minimum distance between the two, to avoid interference, should be
A 2 cm
B 10 cm
C 50 cm
D 400 cm

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