NTA-NET (Based on NTA-UGC) Computer Science (Paper-II): Questions 666 - 668 of 2012

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Question number: 666

» Operating Systems with Unix » Basic Concepts » Interrupts,System Calls,Instructions

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Appeared in Year: 2013

MCQ▾

Question

Consider the input/output (I/O) requests made at different instants of time directed at a hypothetical disk having 200 tracks as given in the following table:

Table shows the serial number, track number and time of arrival

Table shows the serial number, track number and time of arrival

Serial

No.

1

2

3

4

5

Track

No.

12

85

40

100

75

Time of

arrival

65

80

110

100

175

Assume that:

Current head position is at track no. 65

Direction of last movement is towards higher numbered tracks c

Current clock time is 160 milliseconds

Head movement time per track is 1 millisecond.

“look” is a variant of “SCAN” disk-arm scheduling algorithm. In this algorithm. if no more I/O requests are left in current direction, the disk head reverses its direction, The seek times in shortest seek First (SSF) and “look” disk-arm scheduling algorithms respectively are: (September Paper II)

Choices

Choice (4) Response

a.

144 and 123 milliseconds

b.

143 and 123 milliseconds

c.

149 and 124 milliseconds

d.

256 and 186 milliseconds

Question number: 667

» Programming in C and C Plus Plus » Programming in C » Structured Data Types in C-Arrays, Struct, Union, String, and Pointers

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Appeared in Year: 2013

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Question

Arrays in C language can have ________ with reference to memory representation. (June Paper III)

Choices

Choice (4) Response

a.

two-subscripts

b.

n-subscripts

c.

only one subscript

d.

three subscripts only

Question number: 668

» Networks, Virtualization, & Cloud Computing » Data Communication » Channel Capacity, Throughput, Bit Rate, and Error

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Appeared in Year: 2013

MCQ▾

Question

What is the maximum length of CAT-5 UTP cable in Fast Ethernet network? (September Paper II)

Choices

Choice (4) Response

a.

100 meters

b.

1000 meters

c.

200 meters

d.

2000 meters

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