Database Administration Questions


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.

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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.

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14 5358
Q:

Verification of a login name and password is known as

A) Trouble shooting B) Logging in
C) Configuration D) Authentication
 
Answer & Explanation Answer: D) Authentication

Explanation:

Verification of a login name and password is known as Authentication.

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9 5341
Q:

What has two hands but no arms or legs?

Answer

A Clock has 3 hands i.e, an Hour hand, a Minute hand and a Seconds hand.

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3 5303
Q:

In HTML, ___________ tag is used to construct drop-down list boxes and scrolling list boxes.

A) <SELECT> B) <OPTION>
C) <TEXTAREA> D) <INPUT>
 
Answer & Explanation Answer: A) <SELECT>

Explanation:
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58 5281
Q:

Which command displays memory usage in linux?

A) Top B) Free
C) Buffer D) Swap
 
Answer & Explanation Answer: B) Free

Explanation:

Free command displays memory usage in linux.

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9 5248
Q:

Solve the Math puzzle?

maths_puzzle1535777263.jpg image

A) 9 B) 15
C) 6 D) 12
 
Answer & Explanation Answer: C) 6

Explanation:

In the given puzzle, the logic is the product of the number and its preceeding number gives the result.

 

9 = 9 x 8 = 72

8 = 8 x 7 = 56

7 = 7 x 6 = 42

6 = 6 x 5 = 30

5 = 5 x 4 = 20

 

Similarly,

3 = 3 x 2 = 6.

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13 5246
Q:

I am an 8 letter word.

First 4 is the question.

2, 3, 4 protects our head.

5, 6, 7 IT company name.

7 & 8 are the same letters.

Who am I?

Answer

That 8 letter word is Whatsapp (a messenger app)


First four letters:   WHAT a question
 
Letters 2,3,4:     HAT protects our head

Letters 5,6,7:   SAP an IT company

Letters 7,8:    PP same.

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