Questions

Q:

What are the operating system components?

Answer

- Process management


- Main memory management


- File management


- I/O system management


- Secondary storage management


- Networking


- Protection system


- Command interpreter system

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Q:

What type of macromolecule is DNA?

A) Proteins B) Carbohydrates
C) Nucleic acids D) All of the above
 
Answer & Explanation Answer: C) Nucleic acids

Explanation:

DNA stands for Deoxyribo nucleic acid. It is a nucleic acid made up of monomeric unit called Nucleotide.

A nucleotide consist of -

a) Sugar - Deoxyribose in DNA ( ribose in RNA)

b) An organic base- Adenine, cytosine, guanine.

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Q:

The greenhouse effect is caused solely by human activity.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

True, the greenhouse effect is caused solely by human activities such as deforrestation, depletion of natural resources and emission of CO2 by using vehicles, refrigerators and AC's.

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Q:

The rate of flow of electric charge is measured in

A) ampere B) coulomb
C) ampere/coulomb D) ampere-coulomb
 
Answer & Explanation Answer: A) ampere

Explanation:
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Q:

Which memory is nonvolatile?

A) Floppy discs B) Magnetic tape
C) ROM D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A computer has two types of memory.

1. Non-volatile and

2. Volatile.

 

Volatile memory is computer memory that requires power to maintain the stored information.

* It is a temporary memeory which cannot contain information permanently.

Example :: RAM or Random Access Memory

 

Non-volatile memory is computer memory that can retain the stored information even when not powered.

* It is a permanent memory in which data is stored in permanently.

Examples :: Hard disc, ROM, Floppy discs, Magnetic tape,...

 

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Q:

Which memory needs refresh?

A) DRAM B) SRAM
C) ROM D) All of the above
 
Answer & Explanation Answer: A) DRAM

Explanation:

Memory refresh is the process of periodically reading information from an area of computer memory and immediately rewriting the read information to the same area without modification, for the purpose of preserving the information.

DRAM1532669979.png image

Memory refresh is a background maintenance process required during the operation of semiconductor dynamic random-access memory (DRAM), the most widely used type of computer memory.

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Q:

Which of these following missiles is made by together India and Russia?

A) Agni B) Prudhvi
C) Brahmas D) Akash
 
Answer & Explanation Answer: C) Brahmas

Explanation:
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Q:

IPR stands for

A) Intellectual Property Rights B) International Property Rights
C) International Postgraduate Research D) Indian Property Rights
 
Answer & Explanation Answer: A) Intellectual Property Rights

Explanation:

IPR's stands for Intellectual Property Rights. Intellectual property is the product of the human intellect including creativity concepts, inventions, industrial models, trademarks, songs, literature, symbols, names, brands,....etc.

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