Q:

Explain fork() system call?

Answer

The `fork()’ used to create a new process from an existing process. The new process is called the child process, and the existing process is called the parent. We can tell which is which by checking the return value from `fork()’. The parent gets the child’s pid returned to him, but the child gets 0 returned to him.

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Subject: Operating Systems Exam Prep: GATE

2 7059

Q:

The state with the largest area under waste land is

A) Gujarat	B) Madhya pradesh
C) Jammu and Kashmir	D) Rajasthan

Answer & Explanation Answer: C) Jammu and Kashmir

Explanation:

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Filed Under: Indian Geography

22 7054

Q:

Which country has always remained free from foreign rule?

A) Phillipines	B) Nepal
C) USA	D) Laos

Answer & Explanation Answer: B) Nepal

Explanation:

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Filed Under: World History

8 7053

Q:

A computer assisted method for the recording and analyzing of existing or hypothetical systems is

A) Data transmission	B) Data capture
C) Data flow	D) Data processing

Answer & Explanation Answer: C) Data flow

Explanation:

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Filed Under: Operating Systems
Job Role: Database Administration , IT Trainer

7 7045

Q:

Irrigation canals are generally aligned along

A) Contour line	B) Straight line
C) Ridge line	D) Valley line

Answer & Explanation Answer: C) Ridge line

Explanation:

Irrigation_canals_are_generally_aligned_along1556259625.png image

A ridge ine is a line formed along the highest points of a mountain ridge.

Irrigation canals are generally aligned along ridge lines.

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Filed Under: Indian Geography
Exam Prep: CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

3 7045

Q:

Which of the following is not a transverse wave?

A) Light waves	B) Radio waves
C) Sound waves	D) All the above

Answer & Explanation Answer: C) Sound waves

Explanation:

Light and Radio waves are both different frequency/wavelengths of electromagnetic radiation, which consists of two components electric and magnetic of perpendicular, transverse waves.

Sound, on the other hand, is a longitudinal wave which oscillates parallel to it's medium (back and forth instead of up and down).

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Filed Under: Physics
Exam Prep: GATE , CAT , Bank Exams , AIEEE
Job Role: Bank PO , Bank Clerk , Analyst

14 7042

Q:

Phycology is the branch of botany in which we study about

A) Algae	B) Fungi
C) Ecology	D) Virus

Answer & Explanation Answer: A) Algae

Explanation:

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Filed Under: Biology

27 7037

Q:

When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the:

A) first step.	B) second step.
C) third step.	D) fourth step.

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