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Database Administration Questions

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Q:

What operator tests column for the absence of data?

A) NOT operator B) IS NULL operator
C) EXISTS operator D) All of the above
 
Answer & Explanation Answer: B) IS NULL operator

Explanation:

SELECT "column_name"


FROM "table_name"


WHERE "column_name" IS NULL.

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Filed Under: SQL
Exam Prep: AIEEE , Bank Exams , CAT
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Q:

Only For Geniuses

Solve this MathPuzzle if you can?

num11515666627.jpg image

Answer

Let the required number be 'X'


Condition 1 :  


XX = 2X  => 2X2 = X => X = 12


 


Condition 2 :


X × X = X2=> X = 12


 


Therefore, 12 is the number which becomes double when it is divided by itself and becomes half when it is multiplied by itself.


 

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Subject: Math Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE
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Q:

An entity is a thing in the real world with an independent existence.

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

Explanation:

Entity is a real world object

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Subject: Database
Job Role: Database Administration

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Q:

The shorter i am, the bigger i am.

What am I?

Answer

A Temper.

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Subject: Word Puzzles Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

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Q:

Which layer 4 protocol is used for a Telnet connection?

A) UDP B) IP
C) TCP D) TCP/IP
 
Answer & Explanation Answer: C) TCP

Explanation:

Telnet uses TCP at layer 4. It uses IP at layer 3. We know that Telnet uses TCP/IP protocol, but in the question, it is asked specifically at layer 4 what is used in Telnet. So it is TCP at layer4 and IP at layer 3.

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Filed Under: Networking
Exam Prep: AIEEE , Bank Exams
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Q:

Everyone has it and no one can lose it. What is it?

A) Face B) Teeth
C) Hair D) Shadow
 
Answer & Explanation Answer: D) Shadow

Explanation:
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Filed Under: Logic Puzzles
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Q:

Which of the following is not an Output device?

A) Scanner B) Moniter
C) Printer D) Speakers
 
Answer & Explanation Answer: A) Scanner

Explanation:
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Filed Under: Computer
Exam Prep: AIEEE , Bank Exams , CAT
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9 4670
Q:

Component Testing is also called as

component_testing_is_also_called_as1542088267.jpg image

A) Unit testing B) Module testing
C) Program testing D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Component Testing is also called as Module or Unit or Program testing. It is testing of all the components in an application separately.

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Filed Under: Software Testing
Job Role: Database Administration , IT Trainer , Software Architect

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