1.1 The minimum number of cards to be dealt from an arbitrarily shuffled deck of 52 cards to guarantee that three cards are from some same suit is

• 3
• 8
• 9
• 12

 

1.2 An n x n array v is defined as follows:

v [i, j] = i-j for all i, j, 1 £ i £ n, 1 £ j £ n

The sum of the elements of the array v is

• 0
• n-1
• n 2 - 3n + 2
• n 2 (n + 1) /2

 

1.3 The determinant of the matrix is

• 4
• 0
• 5
• 20

 

1.4 Let S and T be languages over S = {a, b} represented by the regular expressions (a + b *) * and (a + b) *, respectively. Which of the following is true?

• S Ì T
• T Ì S
• S = T
• S Ç T = f

 

1.5 Let L denotes the language generated by the grammar S ® 0S0/00.

Which of the following is true?

• L = 0 +
• L is regular but not 0 +
• L is context free but not regular
• L is not context free

 

1.6 The number 43 in 2's complement representation is

• 01010101
• 11010101
• 00101011
• 10101011

 

1.7 To put the 8085 microprocessor in the wait state

• lower the-HOLD input
• lower the READY input
• raise the HOLD input
• raise the READY input

 

1.8 Comparing the time T1 taken for a single instruction on a pipelined CPU with time T2 taken on a non­ pipelined but identical CPU, we can say that

• T1 £ T2
• T1 ³ T2
• T1< T2
• T1 is T2 plus the time taken for one instruction fetch cycle

 

1.9 The 8085 microprocessor responds to the presence of an interrupt

• as soon as the TRAP pin becomes 'high'
• by checking the TRAP pin for 'high' status at the end of each instruction fetch
• by checking the TRAP pin for 'high' status at the end of the execution of each instruction
• by Checking the TRAP pin for 'high' status at regular intervals

 

1.10 The most appropriate matching for the following pairs

X: Indirect addressing 1 : Loops

Y: Immediate addressing 2 : Pointers

Z: Auto decrement addressing 3: Constants

is

 

• X-3, Y-2, Z-1
• X-I, Y-3, Z-2
• X-2, Y-3, Z-1
• X-3, Y-l, Z-2

 

1.11 The following C declarations

struct node {

int i;

float j ;

};

struct node *s[10] ;

define s to be

(a) An array, each element of which is a pointer to a structure of type node

(b) A structure of 2 fields, each field being a pointer to an array of 10 elements

(c) A structure of 3 fields: an integer, a float, and an array of 10 elements

(d) An array, each element of which is a structure of type node

 

1.12 The most appropriate matching for the following pairs

X: m = malloc (5); m=NULL; 1 : using dangling pointers

Y: free (n) ; n-> value=5; 2 : using uninitialized pointers

Z: char *p; *p = 'a' ; 3 : lost memory

is

• X-I, Y-3, Z-2
• X-2, Y-l, Z-3
• X-3, Y-2, Z-l
• X-3, Y-l, Z-2

 

1.13 The most appropriate matching for the following pairs

X: depth first search 1: heap

Y: breadth-first search 2: queue

Z: sorting 3: stack

is

• ,X-l,Y-2; Z-3
• X-3, Y-l, Z-2
• X-3, Y-2, Z-l
• X-2, Y-3, Z-l