ECAT Computer Science MCQ's Test For Full Book With Answers

ECAT Computer Science MCQ's Test For Full Book

Sr. # Questions Answers Choice
1 According to absorption law x. (x+y) = x y 1+x 1+y
2 According to aborption law x+x.y= x y 1 + x 1 + y
3 The commutative law in Boolean Algebra, where a, b and c are binary number is. a+0=a a+1=1 a+b=b+a a. (b+c) = a.b +a.c.
4 x . y <u>x + y</u> <u>x</u> . <u>y</u> x . y
5 x + y
6 If A and B are two 1-bit numbers, what logic gates will be required to test for A=B? NOR gate EXCLUSIVE OR gate EXCLUSIVE NOT gate OR gate
7 Boolean expression for NOR gate with two inputs x and y can be written as. <u>x</u> + y__ x. y <u>x + </u>y
8 Boolean description for the exclusive OR gate for two inputs x and y can be written as. x<u> +</u> y __ _x _y x.<u> y </u>+<u> x</u>. y x . y + x .y
9 <u>A + B</u> +<u> C + D</u> <u>A</u> + <u>B</u> C<u> + D</u>
10 <u>A</u> +<u> B</u> +<u> C</u> + D <u>A</u> <u>B</u><u>C</u> <u>D</u> A + B + C + D
11 NAND gates are preferred over others because these. have lower fabrication area can be used to make any gate consume least elctronic power provide maximum density in a chip
12 Odd parity of a word can be conveniently tested by. OR gate XOR gate NOR gate NAND gate
13 An AND gate will function as OR if. all the inputs to the gates are "I" all the inputs are "O" a Not gate is added to it all the inputs and outputs are complemented
14 An OR gate has 6 input. The number of input words in its truth table are. 6 32 64 128
15 Which of the following function is referred as the complementary.? OR function NOT function NAND function AND function
16 Which of the following statement is true in the case of AND gate with input A and B. If A and B are applied, there will not be any output If neither input is applied, there will be an output If one input is applied there will not be any output If one input is applied there will be an output
17 The logic device that perform Boolean multiplication is. AND gate OR gate Inverter None of these
18 Which of the following gate is two level logic gate. OR gate AND gate EXCLUSIVE OR gate NAND gate
19 The output will be one in case any input is one in the case of. OR gate AND gate NAND gate NOT gate
20 Logical multiplication refers to operation of. OR gate AND gate NOT gate inverter gater
21 Logical addition refers to operation of OR gate AND gate NOT gate invertr gate
22 Which of the following operations are used by Boolean algebra.? Boolean addition Boolean multiplication Boolean complementation All of the above
23 Boolean algebra use which of the following to represent arithmetic quantities. decimal digits exponents binary bits fractions
24 Boolean algebra is also known as. logical algebra control algebra switching algebra programming algebra
25 Boolean algebra is. used for arithmetical operation is ALU an aid for binary conversion useful for error detection and error correction used to describe the behavior and structure of logic networks and as an aid in the design of logic system
26 The number 10000 would appear just immediately after. FFFF (hex) 1111 (binary) 7777 (octal) all of the above
27 The number A9D in Hexadecimal system is equivalent to which number in binary system. 101010111101 101010011101 101110011101 101010011111
28 1268+ 4258= __________ 111101011<sub>2</sub> 101101001<sub>2</sub> 101101011<sub>2</sub> 101100011<sub>2</sub>
29 AB16+ CD16= ________ 101111010<sub>2</sub> 101111000<sub>2</sub> 101111110<sub>2</sub> 101101000<sub>2</sub>
30 The number A9D in Hexadecimal system is equivalent to which number in decimal system. 2727 2648 3717 2717
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