Database Administration Questions


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:

What looks back but cannot see?

Answer

Reflection is what which looks back but can't see.

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Q:

Which datatype in c language has least storage?

A) char B) double
C) int D) float
 
Answer & Explanation Answer: A) char

Explanation:

Data types are used for declaration of variables in computer programming languages. These determine the type and size of data associated with variables.

Data types examples - int, char, float, etc...

 

char datatype is the least storage data type with 1 byte.

int with 2 or 4 bytes.

float with 4 bytes

double with 8 bytes.

datatype_in_c_language_has_least_storage1562156854.png image

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Q:

What does microprocessor speed of a computer depends on?

A) bandwidth B) clock speed
C) number of instructions D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

The computers microprocessor speed depends on all the factors like clock speed, bandwidth and the number of instructions it processes.

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Q:

Who makes it has no need of it.

What is it?

Answer

A Coffin.

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Q:

Rearrange the following sentences (A), (B), (C), (D), (E) and (F) in the proper sequence to form a meaningful paragraph, then answer the questions given below them.

 

(A) But those apps are just a hint of what this Internet behemoth offers

(B) Gmail, Google maps, and Blogger are used widely.

(C) By now, most know that Google is about far more than search.

(D) Under the hood of its famous search engine. (F) You may not know about, but probably should

(E) Here’s a rundown of some useful Google gems that

A) DECBFA B) EDCFBA
C) BCDAEF D) DCEBFA
 
Answer & Explanation Answer: B) EDCFBA

Explanation:

The rearranged sentences are ::

(D) By now, most know that Google is about far more than search.(C) Gmail, Google maps, and Blogger are used widely.(B) But those apps are just a hint of what this Internet behemoth offers (E) under the hood of its famous search engine.(A) Here’s a rundown of some useful Google gems that (F) you may not know about, but probably should.

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Q:

An increase in the quantity demanded means that

A) The demand curve shifted to right B) Price of the product has declined
C) Increase in consumer income D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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1 2397
Q:

Translator program used in assembly language

A) Assembler B) Interpreter
C) Compiler D) Operating system
 
Answer & Explanation Answer: A) Assembler

Explanation:

Assemblers are used to translate a program written in a low-level assembly language into a machine code (object code) file so it can be used and executed by the computer.

 

Hence, Assembler is the translator program used in assembly language.

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