# GATE CS Question Paper 2019-20

GATE i.e. Graduate Aptitude Test in Engineering Computer Science 2019-20 Exam Has been Conducted by IISc Bangalore IIT Bombay IIT Delhi IIT Guwahati IIT Kanpur IIT Kharagpur IIT Madras IIT Roorkee. This GATE CS 2019-20 examination is the procedure to get the admission in M.Tech

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## GATE CS Question Paper 2019-20

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Q.1 Consider the following logical inferences.
I1: If it rains then the cricket match will not be played.
The cricket match was played.
Inference: There was no rain.
I2: If it rains then the cricket match will not be played.
It did not rain.
Inference: The cricket match was played.
Which of the following is TRUE?
(A) Both I and ‘2 are correct inferences
(B) I is correct but 12 is not a colTect inference
(C) I is not correct but ‘2 is a correct inference
(D) Both I and ‘2 are not correct inferences

Q.2 Which of the following is TRUE?
(A) Every relation in 3NF is also in BCNF
(B) A relation R is in 3NF if every non-prime attribute of R is fully functionally dependent on every keyofR
(C) Every relation in BCNF is also in 3NF
(D) No relation can be in both BCNF and 3NF

Q.7 The decimal value 0.5 in IEEE single precision floating point representation has
(A) fraction bits of 000.. .000 and exponent value of 0
(B) fraction bits of 000.. .000 and exponent value of—1
(C) fraction bits of 100. . .000 and exponent value of 0
(D) no exact representation

Q.8 A process executes the code
forkO;
fork():
forkO:
The total number of child processes created is
(A)3 (B)4 (C) 7 (D) 8

Q.10 The protocol data unit (PDU) for the application layer in the Internet stack is
(A) Segment (B) Datagrarn (C) Message (D) Frame

Q.14 Given the basic ER and relational models, which of the following is INCORRECT?
(A) An attribute of an entity can have more than one value
(B) An attribute of an entity can be composite
(C) In a row of a relational table, an attribute can have more than one value
(D) In a row of a relational table, an attribute can have exactly one value or a NULL value

Q.15 Which of the following statenients are TRUE about an SQL query?
P : An SQL query can contain a HAVING clause even if it does not have a GROUP BY clause
Q: An SQL query can contain a HAVING clause only if it has a GROUP BY clause
R: All attributes used in the GROUP BY clause must appear in the SELECT clause
S : Not all attributes used in the GROUP BY clause need to appear in the SELECT clause
(A) P and R (B) P and S (C) Q and R (D) Q and S