Operating System (GATE Computer Science): Questions 127 - 129 of 129

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Question number: 127

» Operating System » Memory Management and Virtual Memory

MCQ▾

Question

Dirty bit for a page in a page table

Choices

Choice (4) Response

a.

Helps a avoid unnecessary writes on a programming devices

b.

Helps maintain LRU information

c.

Allows only read on a page

d.

Question does not provide sufficient data or is vague

Question number: 128

» Operating System » Processes

MCQ▾

Question

The computer’s processor consist of the following parts________.

Choices

Choice (4) Response

a.

Operating system and applications

b.

CPU and main memory

c.

Hard disk and floppy drive

d.

None of the above

Question number: 129

» Operating System » Threads

MCQ▾

Question

System calls are usually invoked by using

Choices

Choice (4) Response

a.

An indirect jump

b.

Polling

c.

A software interrupt

d.

All of the above

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