Database Administration Questions


Q:

Is Air a Mixture?

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

Explanation:

True, Air is a Mixture.


Air is considered as mixture for the following reasons ;


1. Air can be separated into its components like N2, O2 , Argon and CO2 by the process of fractional distillation of liquid air.


2. Air shows the properties of all the gases present in the atmosphere.
For example : Oxygen is good Supporter of combustion. Hence air also is good supporter of combustion.


3. Air does not have a fixed formula.


4. Air has a variable composition because air at different places contains different amount of gases.


5. Heat or Light energy is neither absorbed nor released when air is prepared physical by mixing required amount of gases .


6. Mixture does have fixed boiling Point. It holds good in case of liquid air.

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Subject: Physics
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE
Job Role: Analyst , Bank PO , Database Administration , IT Trainer

7 3936
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 3932
Q:

I shrink smaller every time I take a bath.

What am I ?

Answer

A Soap.


Yes, it gets shrinks smaller every time we take a bath.

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2 3929
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 3904
Q:

Explain what is injector ?

Answer

1.  An injector is a service locator.
2.  It is used to retrieve object instances as defined by provider, instantiate types, invoke methods and load modules.
3. There is a single injector per Angular application, it helps to look up an object instance by its name.

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3 3904
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 3901
Q:

The list of coded instructions is called

A) Algorithm B) Flowchart
C) Utility programs D) Computer program
 
Answer & Explanation Answer: D) Computer program

Explanation:


A computer program is a collection of instructions that performs a specific task when executed by a computer

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Filed Under: Operating Systems
Exam Prep: GRE , TOEFL
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7 3895
Q:

Which standard govern parallel communications?

A) CAT 5 B) IEEE 1284
C) RS-232 D) None of the above
 
Answer & Explanation Answer: B) IEEE 1284

Explanation:

IEEE 1284 is a standard that govern parallel communications.

 

  • IEEE 1284 is a standard that defines bi-directional parallel communications between computers and other devices.

 

  • It was originally developed in the 1970s by Centronics, and was widely known as the Centronics port, both before and after its IEEE standardization.

 

                      which_standard_govern_parallel_communications1539064136.jpg image

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