Technical Questions

Q:

 A reason for using an SQL view to hide columns is:

A) to simplify a result only. B) to prevent the display of sensitive data only.
C) to accomplish both of the above. D) None of the above are reasons for using an SQL view.
 
Answer & Explanation Answer: C) to accomplish both of the above.

Explanation:
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Filed Under: Database

1 6158
Q:

The PS command prints the process status for only some of the running processes.

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

Explanation:

The PS command prints the process status for some or all of the running processes

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Subject: Operating Systems
Exam Prep: GATE

1 6152
Q:

What is busy waiting?

Answer

The repeated execution of a loop of code while waiting for an event to occur is called busy-waiting. The CPU is not engaged in any real productive activity during this period, and the process does not progress toward completion.

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9 6108
Q:

Which physical connection is the fastest?

A) Coaxial cable B) Infrared
C) Microwave D) Fiber-optic
 
Answer & Explanation Answer: D) Fiber-optic

Explanation:

Fiber-optic physical or wired connection is the fastest communication connection.

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4 6064
Q:

Explain soundex() and metaphone() ?

Answer

soundex()
The soundex() function calculates the soundex key of a string. A soundex key is a four character long alphanumeric string that represent English pronunciation of a word. he soundex() function can be used for spelling applications.
< ?php
$str = "hello";
echo soundex($str);
? >


metaphone()
The metaphone() function calculates the metaphone key of a string. A metaphone key represents how a string sounds if said by an English speaking person. The metaphone() function can be used for spelling applications.
< ?php
echo metaphone("world");
? >

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7 6026
Q:

 A transitive dependency is which of the following?

A) A functional dependency between two or more key attributes. B) A functional dependency between two or more nonkey attributes.
C) A relation that is in first normal form. D) A relation that is in second normal form.
 
Answer & Explanation Answer: B) A functional dependency between two or more nonkey attributes.

Explanation:
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Filed Under: Database

4 5874
Q:

What is the type of the algorithm used in solving the 8 Queens problem ?

A) Dynamic Programming B) BackTracking
C) Branch and Bound D) None
 
Answer & Explanation Answer: B) BackTracking

Explanation:

BackTracking is used for solving N-Queens problem

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Filed Under: Software Testing

1 5817
Q:

What type of operating system uses the NTFS file system ?

A) Windows B) Mac OS X
C) Unix D) All of these
 
Answer & Explanation Answer: A) Windows

Explanation:

Windows operating system uses the NTFS file system.

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Filed Under: Operating Systems
Exam Prep: Bank Exams

5 5810