Database Administration Questions


Q:

What is the probability of an impossible event?

A) 0 B) -1
C) 0.1 D) 1
 
Answer & Explanation Answer: A) 0

Explanation:

The probability of an impossible event is 0.

The event is known ahead of time to be not possible, therefore by definition in mathematics, the probability is defined to be 0 which means it can never happen.

 

The probability of a certain event is 1.

Report Error

View Answer Report Error Discuss

17 5486
Q:

Which one of the following sorts rows in SQL?

A) ORDER BY B) GROUP BY
C) SORT BY D) ALIGN BY
 
Answer & Explanation Answer: A) ORDER BY

Explanation:
Report Error

View Answer Report Error Discuss

0 5471
Q:

What has a foot but no legs?

Answer

A measuring device.


 


Measuring devices have feet on them to measure distance.

Report Error

View answer Workspace Report Error Discuss

8 5422
Q:

Which of these is not a simple machine?

A) a pair of scissors B) a lever
C) a ramp D) the pulley
 
Answer & Explanation Answer: A) a pair of scissors

Explanation:

Any of the basic mechanical devices for applying a force are called simple machines.

There are 6 basic simple machines; the lever, the wheel and axle, the inclined plane, the wedge, the pulley, and the screw. Several of these simple machines are related to each other. But, each has a specific purpose in the world of doing work.

Report Error

View Answer Report Error Discuss

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

16 5396
Q:

A collection of interrelated records is called a

A) Datasheet B) Spreadsheet
C) Database D) Utility File
 
Answer & Explanation Answer: C) Database

Explanation:
Report Error

View Answer Report Error Discuss

5 5388
Q:

SNOBOL is mainly used for

A) Text Operation B) String operations
C) List operations D) Numerical operations
 
Answer & Explanation Answer: B) String operations

Explanation:

SNOBOL is a high-level computer programming language used especially in manipulating textual data. It is mainly used for string operations and was developed between 1962 and 1967.

Report Error

View Answer Report Error Discuss

52 5369
Q:

By default, a Linux user falls under which group?

A) same as userid (UPG) B) system
C) staff D) others
 
Answer & Explanation Answer: A) same as userid (UPG)

Explanation:

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel. By default, a Linux user falls under same as userid (UPG) group.

Report Error

View Answer Report Error Discuss

47 5356
Q:

Akhil after travelling 50 km meets Raju who suggests him to go slower. He then proceeds at ¾ of his former speed and arrives at his destination 35 minutes late. Had the meeting occurred 24 km further Akhil would have reached its destination 25 minutes late. What is the initial speed of Akhil?

 

A) 48 kmph B) 36 kmph
C) 24 kmph D) 20 kmph
 
Answer & Explanation Answer: A) 48 kmph

Explanation:

Let the initial speed of Akhil be '4p' kmph

Then speed after decrease in speed = '3p' kmph

We know that, 

Change in speed == Change in time

According to the given data,

243p - 244p = 35 - 2560=> p = 12

 

Hence, the initial speed of Akhil = 4p = 4 x 12 = 48 kmph.

Report Error

View Answer Report Error Discuss

14 5349