Questions

Q:

which of the following represents a set of properties that guarantee that database transactions are processed reliably in computer science ?

A) Buffer Cache B) ACID
C) Foreign Key D) None
 
Answer & Explanation Answer: B) ACID

Explanation:

ACID means (Atomicity, Consistency, Isolation, Durability) is a set of properties of database transactions intended to guarantee validity even in the event of errors, power failures, etc.

In the context of databases, a sequence of database operations that satisfies the ACID properties and, thus, can be perceived as single logical operation on the data, is called a transaction. For example, a transfer of funds from one bank account to another, even involving multiple changes such as debiting one account and crediting another, is a single transaction.

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Filed Under: IBM Certification
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Q:

How many jobs can be run concurrently on MVT?

Answer

15 jobs.

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Q:

Which among the following countries , occupies the largest chunk of the Sunderbans Delta?

A) Bangladesh B) Burma
C) India D) Thailand
 
Answer & Explanation Answer: A) Bangladesh

Explanation:

Sunderbans is the name given to the dense impenetrable  tidal/ mangrove forest of Ganges-Brahmaputra delta because of abundant sundari trees found here.

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Q:

5 Digits Number?

What 5-digit number has the following features:

If we put the numeral 1 at the beginning, we get a number three times smaller than if we put the numeral 1 at the end of the number.

Answer

We can make an equation:


3(100000 + x) = 10x+1


(Why? Well, adding 100000 puts a 1 at the front of a five-digit number, and multiplying by 10 and adding 1 puts a 1 at the end of a number)


Solving this gives:


10x+1 = 3(100000 + x)
10x+1 = 300000 + 3x
10x = 299999 + 3x
7x = 299999
x = 299999/7 = 42857


The answer is 42857 (142857 is three times smaller than 428571).

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Q:

What is a single celled organism called

A) protoctists B) chromosomes
C) unicellular D) bicellular
 
Answer & Explanation Answer: C) unicellular

Explanation:

An organism is a living thing, and there are two broad categories of organisms: those made up of only a single cell, and those made up of multiple cells.

Single-celled organisms means which contains only one cell are called unicellular organisms. 'Uni-' means 'one,' so the name 'unicellular' literally means 'one cell.'

 

Examples of Unicellular or Single celled organisms ::

 

Prokaryotic organisms like Bacteria,...

Some algae like green algae, euglena,...

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Filed Under: General Science
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Q:

What is the study of flags called

A) Vexillology B) Vexillography
C) Vexology D) None of the above
 
Answer & Explanation Answer: A) Vexillology

Explanation:

The study of flags is called Vexillology and the art of flag design is called as Vexillography. The man who studies flags is called as Vexillologist.

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Q:

The decadal growth in the population of India during 1991-2001 is close to 

A) 13% B) 17%
C) 21% D) 25%
 
Answer & Explanation Answer: C) 21%

Explanation:
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Q:

The two broad categories of software are

A) Drivers and MS office B) Application and Spreadsheets
C) System and Application D) Utility programs and System
 
Answer & Explanation Answer: C) System and Application

Explanation:

The two broad categories of software in a computer are

1. System software
2. Application software

 

the_two_broad_categories_of_software_are1560849803.jpg image

System software controls how the system works and enables user to access all of the system hardware and application software

The OS, utility programs and drivers come under system software.

 

Application software are software used by the user to perform specific task. They are installed according to the user's requirements.

The word processor, web browser, players, spreadsheets etc... come under this application software.

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