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Computer Science Set-1
Computer Networks
28

Computer Networks MCQ with Answers

28) To interface a computer terminal with a modem, required physical layer standard is

RS 424 - A

RS 232 - C

RS 449

Either (b) or (c)

Answer is:

Either (b) or (c)

Computer Networks MCQ with Answers

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Related Computer Networks MCQ with Answers

29) A 100 km long cable runs at the T1 data rate. The propagation speed in the cable is half the speed of light. How many bits is in the cable

572

672

772

873

Answer is:

772

30) How much bandwidth is there in 0.1 micron of spectrum at a wavelength of 1 micron ?

20,000 GHz

25,000 GHz

30,000 GHz

None of these

Answer is:

30,000 GHz

31) It is desired to send a sequence of computer screen images over an optical fiber. The screen is 480 x 640 pixels, each pixel being 24 bits. There are 60 screen images per second. How much bandwidth is needed, and how many microns of wavelenth are needed for this band at 1.30 microns

1.0 x 105 microns

2 x 105 microns

2.5 x 105 microns

5 x 105 microns

Answer is:

2.5 x 105 microns

32) Establishing a virtual connection is virtually equivalent to

connecting as virtual memory

physically connecting a DTE and DCE

placing a telephone call prior to a conversion

placing a modem prior to a conversion

Answer is:

placing a telephone call prior to a conversion

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