Database Administration Questions


Q:

The average age of Vishal and Raghavendra is 24 years. If a new person Veerender is also included, the average age is increased by 1.5 years. What is the age of Veerender?

A) 28.5 yrs B) 29.5 yrs
C) 30.5 yrs D) 27 yrs
 
Answer & Explanation Answer: A) 28.5 yrs

Explanation:

According to the given data,

(V + R)/2 = 24

Now, after joining of Veerender,

V + R + D)/3 = 25.5

Hence, Veerender Age = 3(25.5) - 2(24) = 76.5 - 48 = 28.5 years.

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3 3732
Q:

Digitized information can be used by computers.

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

Explanation:

TRUE. The computers and electronic devices use digitized information which is easily understood by them.


 


Digitization is the process of converting analog signals or information of any form into a digital format that can be understood by computer systems or electronic devices. The term is used when converting information, like text, images or voices, and sounds, into binary code.

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6 3730
Q:

MS-EXCEL is based on

A) OS/2 B) UNIX
C) WINDOWS D) DOS
 
Answer & Explanation Answer: C) WINDOWS

Explanation:

Microsoft Excel is a spreadsheet developed by Microsoft for Windows, macOS, Android and iOS. It features calculation, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications.

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4 3727
Q:

What cannot be performed from the windows task manager?

A) Open a program B) Check recent CPU usage
C) Delete a program from the hard drive D) View what applications are running in the background
 
Answer & Explanation Answer: C) Delete a program from the hard drive

Explanation:

The task manager enables you to monitor processes, applications and services currently running on your computer. You can use it to start and stop programs and processes. In addition, you can use the task manager to show informative stats about your PC’s performance and network.

 


Hence, to delete a program from the hard drive, you have to go to the control panel to uninstall an application properly.

 

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6 3722
Q:

Who invented Electric Generator?

A) Michael Faraday B) Thomas Alva Edison
C) Graham Bell D) Alfred Nobel
 
Answer & Explanation Answer: A) Michael Faraday

Explanation:

Michael Faraday invented Electric Generator in 1831.

 

        • The operating principle of electromagnetic generators was discovered in the years of 1831–1832 by Michael Faraday.

 

        • The principle later called Faraday's law, is that an electromotive force is generated in an electrical conductor which encircles a varying magnetic flux.


 

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

11 3722
Q:

Which of the following is true of VoIP?

A) It uses the public switched telephone network. B) Skype is an example of VoIP software.
C) It uses a slow speed dial-up connection. D) All of the above
 
Answer & Explanation Answer: B) Skype is an example of VoIP software.

Explanation:

VOIP is an acronym for Voice Over Internet Protocol, or in more common terms phone service over the Internet.

 

Voice over Internet Protocol is a category of hardware and software that enables people to use the Internet as the transmission medium for telephone calls by sending voice data in packets using IP rather than by traditional circuit transmissions of the PSTN.

 

Here in the given options, Skype is the only voice service that enables us to talk over internet.

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3 3716
Q:

12% of 70,000 is

A) 8400 B) 7200
C) 6000 D) 5600
 
Answer & Explanation Answer: A) 8400

Explanation:

12% of 70,000

=> 12 x 70,000/100

=> 8400

 

Hence, 12% of 70,000 = 8,400

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3 3711
Q:

What is silly window syndrome?

Answer

It is a problem that can ruin TCP performance. This problem occurs when data are passed to the sending TCP entity in large blocks, but an interactive application on the receiving side reads 1 byte at a time.

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Subject: Networking
Job Role: Database Administration

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