GATE (Graduate Aptitude Test in Engineering) Computer Science: Questions 428 - 430 of 2080

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Question 428

Appeared in Year: 2016 (UGC-NET)

Question

MCQ▾

Consider the following database table having A, B, C and D as its four attributes and four possible candidate keys (I, II, III and IV) for this table:

Four Attributes and Four Possible Candidate Keys
ABCD
a1b1c1d1
a2b3c3d1
a3b1c1d2

I: {B, A}

II: {B, C}

III: {A, D}

IV: {C, D}

If different symbols stand for different values in the table (e. g. , d1 is definitely not equal to d2) , then which of the above could not be the candidate key for the database table?

Choices

Choice (4)Response

a.

I and III only

b.

III and IV only

c.

I only

d.

II only

Question 429

Appeared in Year: 2016 (UGC-NET)

Question

MCQ▾

Which of the following in 8085 microprocessor performs

Choices

Choice (4)Response

a.

DAD SP

b.

DAD H

c.

DAD D

d.

DAD B

Question 430

Appeared in Year: 2016 (UGC-NET)

Question

MCQ▾

Given the following statements:

(1) To implement Abstract Data Type, a programming language require a syntactic unit to encapsulate type definition.

(2) To implement ADT, a programming language requires some primitive operations that are built in the language processor.

(3) C ++ , Ada, Java 5.0, C#2005 provide support for parameterised ADT.

Which one of the following options is correct?

Choices

Choice (4)Response

a.

(1) , (2) and (3) are false.

b.

(1) is true; (2) and (3) are false.

c.

(1) , (2) and (3) are true.

d.

(1) and (2) are true; (3) are false.

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