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Database Administration Questions

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Q:

A DVD is an example of

A) Optical Disc B) Hard Disc
C) Output Device D) Solid state storage device
 
Answer & Explanation Answer: A) Optical Disc

Explanation:

A DVD is an example of Optical Disc.

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Filed Under: Computer
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Q:

LCD of 12 and 18

A) 36 B) 42
C) 12 D) 6
 
Answer & Explanation Answer: A) 36

Explanation:

  LCD is nothing but Lowest or Least Common Denominator

 

Here LCD of 12 and 18 means LCD of two fractions with denominators 12 and 18 respectively.

 

Therefore, LCM of 12 & 18 = 6 x 3 x 2 = 36 

 

      •  How to calculate LCD ::


The lowest common denominator or least common denominator (LCD) is the least common multiple (LCM) of the denominators of a set of fractions.

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Filed Under: HCF and LCM
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Q:

Switching between portrait and landscape modes involves the

A) print layout view B) Arc map
C) header and footer toolbar D) page setup dialog box
 
Answer & Explanation Answer: D) page setup dialog box

Explanation:

Switching between portrait and landscape modes involves the page setup dialog box.

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Filed Under: Computer
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3 5331
Q:

Which results in an increase in power?

A) doing more work in less time. B) doing less work in more time.
C) doing less work in less time. D) doing more work in more time.
 
Answer & Explanation Answer: A) doing more work in less time.

Explanation:

Doing more work in less time, results in an increase in power to do a work.

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Filed Under: Physics
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Q:

Values that are used to end loops are referred to as _____ values.

A) stop B) sentinel
C) end D) finish
 
Answer & Explanation Answer: B) sentinel

Explanation:
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Filed Under: C++
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Q:

As compared to diskettes, the hard disks are

A) More portable B) Slowly accessed
C) More expensive D) Less rigid
 
Answer & Explanation Answer: C) More expensive

Explanation:

As compared to diskettes, the hard disks are more expensive.

As_compared_to_diskettes,_the_hard_disks_are1557378986.jpg image

A diskette is a RAM, removable data storage medium that can be used with personal computers. It is also known as Floppy or Floppy disk. It is composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles.

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Filed Under: Computer
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Q:

Which of the following are elements of SQL?

A) base-table-identifier ::= user-defined-name B) base-table-name ::= base-table-identifier
C) boolean-primary ::= comparison-predicate D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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Filed Under: Oracle
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2 5277
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.

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Filed Under: Probability
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17 5235