IT Trainer Questions


Q:

One year ago the ratio between Maneela’s and Shanthi’s salary was 3 : 4. The ratios of their individual salaries between last year’s and this year’s salaries are 4 : 5 and 2 : 3 respectively. At present the total of their salary is Rs. 4160. The salary of Maneela, now is?

A) Rs. 1600 B) Rs. 1700
C) Rs. 1800 D) Rs. 1900
 
Answer & Explanation Answer: A) Rs. 1600

Explanation:

Let the salaries of Maneela and Shanthi one year before be M1, S1 & now be M2, S2 respectively.

Then, from the given data,

M1/S1 = 3/4  .....(1)

M1/M2 = 4/5 .....(2)

S1/S2 = 2/3  .....(3)

and M2 + S2 = 4160  .....(4)

 

Solving all these eqtns, we get M2 = Rs. 1600.

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Q:

10 examples of computer hardware?

Answer

A computer system consists of two major elements: hardware and software. Computer hardware is the collection of all the parts you can physically touch. Computer software, on the other hand, is not something you can touch. Software is a set of instructions for a computer to perform specific operations. You need both hardware and software for a computer system to work.


10 examples of computer hardware are ::


1. Monitor


2. Motherboard


3. CPU(Microprocessor) 


4. Main memory(RAM)


5. Expansion cards 


6. Power supply unit


7. Optical disc drive 


8. Hard disk drive (HDD)


9. Keyboard


10. Mouse

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Q:

A relational database developer refers to a record as

A) a relation B) an attribute
C) a criteria D) a tuple
 
Answer & Explanation Answer: D) a tuple

Explanation:

A relational database developer refers to a record as a tuple.

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Q:

Which of the following is a form of functional testing?

A) Security testing B) Performance testing
C) Boundary value analysis D) Usability testing
 
Answer & Explanation Answer: D) Usability testing

Explanation:

Functional testing is a type of testing that is done against the requirements of the business application. 

Which_of_the_following_is_a_form_of_functional_testing1552046654.png image

Examples of functional testing are Smoke testing, Sanity testing, Regression testing, Usability testing.

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Q:

What has One Eye Yet cannot See?

A) One-eyed Jack B) A Needle
C) Blind Justice D) Hurricane eye
 
Answer & Explanation Answer: B) A Needle

Explanation:

What has one eye yet cannot see is An Eye of a Needle.

 

A needle has an eye through which we thread it but it is not for seeing.

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Q:

A web page is located using a

A) Universal Record Locator B) Universal Resource Locator
C) Uniform Record Linking D) Universal Record Linking
 
Answer & Explanation Answer: B) Universal Resource Locator

Explanation:

A web page is located using a URL (Universal Resource Locator). Universal Resource Locator is also known as web address.

 

It basically refers to a web resource which is meant for the specification of its location on the network of computer. It is also a mechanism through which information can be retrieved.

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Q:

How many constructors can a class have?

A) 1 B) 2
C) 4 D) None of the above
 
Answer & Explanation Answer: D) None of the above

Explanation:

A class can have any number of constructors. If a class have more than one constructor, we call it as the constructor is overloaded.

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Filed Under: Java
Job Role: Database Administration , IT Trainer

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Q:

P, Q, and R can do a job in 12 days together.  If their efficiency of working be in the ratio 3 : 8 : 5, Find in what time Q can complete the same work alone?

A) 36 days B) 30 days
C) 24 days D) 22 days
 
Answer & Explanation Answer: A) 36 days

Explanation:

Given the ratio of efficiencies of P, Q & R are 3 : 8 : 5

Let the efficiencies of P, Q & R be 3x, 8x and 5x respectively

They can do work for 12 days.

=> Total work = 12 x 16x = 192x

 

Now, the required time taken by Q to complete the job alone = 162x8x = 24 days.

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