EDPT Boolean Logic and Binary Operations 4

Question 1

What is the result of the Boolean expression: NOT (A AND B) when A=1 and B=0?

Accepted Answer

1

Answer

A AND B = 1 AND 0 = 0, and NOT 0 = 1.

Question 2

Which binary number equals decimal 13?

Accepted Answer

1101

Answer

1101 in binary = 8+4+0+1 = 13 in decimal.

Question 3

In a truth table for a 3-input AND gate, how many rows have an output of 1?

Accepted Answer

1

Answer

An AND gate outputs 1 only when ALL inputs are 1, which occurs in exactly 1 of 8 possible input combinations.

Question 4

What is 1010 XOR 1100 in binary?

Accepted Answer

0110

Answer

XOR compares bit-by-bit: 1^1=0, 0^1=1, 1^0=1, 0^0=0, giving 0110.

Question 5

Which logic gate produces an output of 0 only when ALL inputs are 1?

Accepted Answer

NAND

Answer

A NAND gate is the inverse of AND, so it outputs 0 only when all inputs are 1.

EDPT - Electronic Data Processing Test Practice Test