Database Administration Questions


Q:

Three men, four women and six children can complete a work in 9 days. A women does  double the work a man does and a child does half the work a man does. How many women alone can complete this work in 9 days?

A) 7 B) 8
C) 9 D) 6
 
Answer & Explanation Answer: A) 7

Explanation:

Given (3 Men + 4 Women + 6 Children) -----> 9 days

But W = 2M and C = M/2

Now, convert Men and Children into Women by

3W2 + 4W + 6W4=> 32 + 4 + 32 = 7 Women 

Therefore, 7 women alone can complete this work in 9 days.

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12 8092
Q:

In a worksheet, you can select

A) Only rows B) Only columns
C) Entire worksheet D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A worksheet or sheet is a collection of cells in a file created with an electronic spreadsheet program such as Microsoft Excel or Google Sheets where we can keep and save data.

 

in_a_worksheet_you_can_select1557727086.jpg image

 

Here in a worksheet, we can select a single row or column or multiple rows or columns or we can select the entire worksheet. We can create multiple worksheets in a workbook.

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7 8022
Q:

White Box Techniques are also called as

A) Design Based Testing B) Experience Based Technique
C) Structural Testing D) Error Guessing Technique
 
Answer & Explanation Answer: C) Structural Testing

Explanation:

Structural Testing is the other name for White Box Techniques.

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4 8016
Q:

Processor's speed of a computer is measured in

A) Hertz B) Baud
C) MIPS D) BPS
 
Answer & Explanation Answer: A) Hertz

Explanation:

CPU speed is the central factor in a computer's performance. And this CPU speed depends on the processor in the CPU chip. In a computer, clock speed refers to the number of pulses per second generated by an oscillator that sets the tempo for the processor. Clock speed is usually measured in Hertz (Hz).

 

But now-a-days, a pure processor's performance is measured in MIPS (Millions of Instructions Per Second). As here in the question, how a processor's speed is measured is asked and it is Hertz. 

 

Hence, Processor's speed of a computer is measured in Hertz(Hz) [MHz, GHz].

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10 8006
Q:

Order of basicity of amines in gaseous state?

A) 2'> 1'> 3' > NH3 B) 3' > 2' > 1'> NH3
C) 1' > 2' > 3'> NH3 D) 2'> 3'> 1' > NH3
 
Answer & Explanation Answer: B) 3' > 2' > 1'> NH3

Explanation:

The order of basicity in ammonia is different in gaseous phases vs. aqueous phases due to hydrogen bonding.

 

So in gaseous phases it's the well known: 3' > 2' > 1'> NH3. Just so we're on the same page, this is due to the inductive effect of electron donating alkyl groups--they destabilize the lone pair on nitrogen atom, making nitrogen more basic.

 

But in aqueous phase, the order is slightly different: 2'> 1'> 3' > NH3.

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

6 7980
Q:

Social engineering attacks are best identified by

A) Ransomware B) Phishing
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

Social engineering is the art of tricking users into performing certain harmful activities or attacks, users must be trained to identify social engineering. Social engineering attacks typically involve some form of psychological manipulation, fooling otherwise unsuspecting users or employees into handing over confidential or sensitive data. Commonly, social engineering involves email or other communication that invokes urgency, fear, or similar emotions in the victim, leading the victim to promptly reveal sensitive information, click a malicious link, or open a malicious file. Because social engineering involves a human element, preventing these attacks can be tricky for enterprises.

 

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6 7977
Q:

A data dictionary is a special file that contains

A) The width of all fields in all files B) The data type of all fields in all file
C) The name of all fields in all files D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

A data dictionary is a special file that contains a set of information describing the contents, format, and structure of a database and the relationship between its elements, used to control access to and manipulation of the database.

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Filed Under: Database
Exam Prep: Bank Exams
Job Role: Analyst , Bank Clerk , Database Administration , IT Trainer

44 7967
Q:

A term used interchangeably with diskette is

A) Floppy disk B) Disk pack
C) Disk cartridge D) Packette disk
 
Answer & Explanation Answer: A) Floppy disk

Explanation:

A term used interchangeably with diskette is Floppy disk.

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Filed Under: English
Exam Prep: AIEEE , Bank Exams , CAT , GRE , TOEFL
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

5 7960