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Q:

David obtained 76, 65, 82, 67 and 85 marks (out of 100) in English, Mathematics,Physics, Chemistry and Biology What are his average marks ?

A) 75 B) 68
C) 65 D) 60
 
Answer & Explanation Answer: A) 75

Explanation:

Average =   (76 + 65 + 82 + 67 + 85 )/ 5 = 375/5   =  75.

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Filed Under: Average

Q:

If you are using C language to implement the heterogeneous linked list, what pointer type will you use?

Answer

The heterogeneous linked list contains different data types in its nodes and we need a link, pointer to connect them. It is not possible to use ordinary pointers for this. So we go for void pointer. Void pointer is capable of storing pointer to any type as it is a generic pointer type.

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Subject: Java

Q:

What is Tri-state logic?

Answer

Three Logic Levels are used and they are High, Low, HIgh impedance state. The high and low are normal logic levels & high impedance state is electrical open circuit conditions. Tri-state logic has a third line called enable line.

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Subject: Hardware

Q:

In 8085 which is called as High order / Low order Rigister?

Answer

Flag is called as Low order rigister & Accumulator is called as High order Rigister.

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Subject: Hardware

Q:

Why crystal is a preferred clock source?

Answer

Because of high stability, large Q (Quality Factor) & the frequency that doesn't drift with aging. Crystal is used as a clock source most of the times.

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Subject: Hardware

Q:

How is B related to A ? 

I. A is B's sister. 

II. is the father of A and B. 

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data even in both the statements together are not sufficient to answer the question
 
Answer & Explanation Answer: D) If the data even in both the statements together are not sufficient to answer the question

Explanation:

From statements I and II together, we can conclude only that either B is the sister or brother of A.

So, even from both the statements, the exact relation cannot be known. 

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Filed Under: Data Sufficiency

Q:

How many visitors saw the exhibition yesterday ?

I. Each entry pass holder can take up to three persons with him/her. 

II. In all, 243 passes were sold yesterday

A) If the data in statement I alone are sufficient to answer the question B) If the data in statement II alone are sufficient answer the question
C) If the data either in I or II alone are sufficient to answer the question; D) If the data even in both the statements together are not sufficient to answer the question
 
Answer & Explanation Answer: D) If the data even in both the statements together are not sufficient to answer the question

Explanation:

From the two statements, we find that maximum (243 x 3)  i.e, 729 visitors saw the exhibition, But the exact number cannot be determined  

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Filed Under: Data Sufficiency

Q:

A lock can be acquired on a class.

The above statement is

A) True B) False
C) Both A and B D) None
 
Answer & Explanation Answer: A) True

Explanation:

A lock can be acquired on a class. This lock is acquired on the class's Class object.

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Filed Under: Java