Questions

Q:

Describe the Buddy system of memory allocation.

Answer

Free memory is maintained in linked lists, each of equal sized blocks. Any such block is of size 2^k. When some memory is required by a process, the block size of next higher order is chosen, and broken into two. Note that the two such pieces differ in address only in their kth bit. Such pieces are called buddies. When any used block is freed, the OS checks to see if its buddy is also free. If so, it is rejoined, and put into the original free-block linked-list.

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Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation?

13 x 8 + 25 - 6 ÷ 10 = 20

A) ÷ and - B) x and -
C) + and ÷ D) - and +
 
Answer & Explanation Answer: B) x and -

Explanation:
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Q:

Every year " National Maritime Day of India " is observed on

A) 1st April B) 2nd Aril
C) 4th April D) 5th April
 
Answer & Explanation Answer: D) 5th April

Explanation:

National Maritime Day of India is observed every year on 5th April. On this day in 1919, S S Loyalty, the first ship of the Scindia Steam Navigation Company, journeyed to the United Kingdom.

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Filed Under: Important Days and Years
Exam Prep: Bank Exams

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Q:

Pelagic deposits consists of _____

A) Terrigenous materials B) Cosmic materials
C) Inorganic materials D) Organic ooze materials
 
Answer & Explanation Answer: D) Organic ooze materials

Explanation:
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Filed Under: World Geography

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Q:

Which of the following properties is found only in ferromagnetic materials ?

A) Susceptibility independent of temperature B) Point in a particular direction
C) Hysteresis D) Attracting a magnetic substance
 
Answer & Explanation Answer: C) Hysteresis

Explanation:
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Filed Under: Physics
Exam Prep: AIEEE , Bank Exams

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Q:

Which of the statement(s) about the reaction given below is/are INCORRECT?

 

2PbO (s) + C (s) ⟶ 2Pb (s) + CO2 (g)

 

I. Lead is getting reduced.

II. Carbon is getting reduced.

III. Lead oxide is getting reduced.

 

A) Only I and II B) Only I and III
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: A) Only I and II

Explanation:
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Filed Under: Chemistry
Exam Prep: Bank Exams

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Q:

Improve the bracketed part of the sentence.

He is an atheist (yet) he goes to the church every Sunday.

A) because B) and
C) however D) no improvement
 
Answer & Explanation Answer: D) no improvement

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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Q:

Which of the following is an element

A) alumina B) brass
C) graphite D) silicon
 
Answer & Explanation Answer: D) silicon

Explanation:
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Filed Under: Chemistry

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