GATE CSE 2007 | GATE CSE Year Wise Previous Years Questions

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GATE CSE 2007

MCQ (Single Correct Answer)

-0.3

Consider the following statements about user level threads and kernel level threads.

Which one of the following statements is FALSE?

Context switch time is longer for kernel level threads than for user level threads.

User level threads do not need any hardware support.

Related kernel level threads can be scheduled on different processors in a multi-processor system.

Blocking one kernel level thread blocks all related threads.

GATE CSE 2007

MCQ (Single Correct Answer)

-0.6

Consider the following C function:

int f(int n)
{
   static int r = 0;
   if(n <= 0) return 1;
   if(n>3)
   {
     r = n;
     return f(n-2)+2;
   }
  return f(n-1)+r;
}

What is the value of f(5)?

GATE CSE 2007

MCQ (Single Correct Answer)

-0.6

Consider the following finite state automation GATE CSE 2007 Theory of Computation - Finite Automata and Regular Language Question 71 English

The language accepted by this automation is given by the regular expression

$${b^ * }a{b^ * }a{b^ * }a{b^ * }$$

$${\left( {a + b} \right)^ * }$$

$${b^ * }a{\left( {a + b} \right)^ * }$$

$${b^ * }a{b^ * }a{b^ * }$$

GATE CSE 2007

MCQ (Single Correct Answer)

-0.6

Which of the following languages is regular?

$$\left\{ {w{w^R}} \right.\left| {w \in \left\{ {0,\,1} \right\}\left. {^ + } \right\}} \right.$$

$$\left\{ {w{w^R}} \right.x\left| {x,w \in \left\{ {0,\,1} \right\}\left. {^ + } \right\}} \right.$$

$$\left\{ {wx{w^R}} \right.\left| {x,w \in \left\{ {0,\,1} \right\}\left. {^ + } \right\}} \right.$$

$$\left\{ {xw{w^R}} \right.\left| {x,w \in \left\{ {0,\,1} \right\}\left. {^ + } \right\}} \right.$$

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