GATE CSE 1990 | GATE CSE Year Wise Previous Years Questions

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GATE CSE 1990

MCQ (Single Correct Answer)

-0.6

Match the pairs in the following:

List - I

(A) Pointer data type
(B) Activation record
(C) Repeat-until
(D) Coercion

List - II

(p) Type conversion
(q) Dynamic data structure
(r) Recursion
(s) Nondeterministic loop

A - q; B - r; C - s; D - p

A - r; B - q; C - s; D - p

A - q; B - r; C - p; D - s

A - r; B - s; C - q; D - p

GATE CSE 1990

MCQ (More than One Correct Answer)

-0

It is decidable whether:

An arbitrary Turing machine halts after 10 steps.

A Turing machine prints a specific letter.

A Turing machine computes the product of two numbers.

None of the above.

GATE CSE 1990

MCQ (Single Correct Answer)

-0.6

Recursive languages are:

A proper superset of context free languages.

Always recognizable by pushdown automata.

Also called Type $$(0)$$ languages.

Recognizable by Turing machines.

GATE CSE 1990

MCQ (Single Correct Answer)

-0.6

Let $${R_1}$$ and $${R_2}$$ be regular sets defined over the alphabet $$\sum \, $$ then:

$${R_1} \cap R{}_2$$ is not regular.

$${R_1} \cup R{}_2$$ is regular.

$$\sum {^{^ * }} $$ $$-$$ $${R_1}$$ is regular.

$${R_1}{}^ * $$ is not regular.

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