Ex-OR and Ex-NOR Gates MCQs

Question 1

Select the statement that best describes the parity method of error detection:

Accepted Answer

Parity checking is best suited for detecting single-bit errors in transmitted codes.

Answer

Parity checking is best suited for detecting double-bit errors that occur during the transmission of codes from one location to another.

Answer

Parity checking is not suitable for detecting single-bit errors in transmitted codes.

Answer

Parity checking is capable of detecting and correcting errors in transmitted codes

Question 2

A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is a(n):

Accepted Answer

Ex-NOR gate

Answer

OR gate

Answer

Ex-OR gate

Answer

NAND gate

Question 3

A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n):

Accepted Answer

Ex-OR gate

Answer

Ex-NOR gate

Answer

OR gate

Answer

NAND gate

Question 4

Parity systems are defined as either________ or ________ and will add an extra ________ to the digital information being transmitted.

Accepted Answer

odd, even, bit

Answer

positive, negative, byte

Answer

upper, lower, digit

Answer

on, off, decimal

Question 5

Which type of gate can be used to add two bits?

Accepted Answer

Ex-OR

Answer

Ex-NOR

Answer

Ex-NAND

Answer

NOR

Question 6

Show from the truth table how an exclusive-OR gate can be used to invert the data on one input if the other input is a special control function.

Accepted Answer

Using A as the control, when A = 0, X is the same as B. When A = 1, X is the inverse of B.

Answer

Using A as the control, when A = 0, X is the same as B. When A = 1, X is the same as B.

Answer

Using A as the control, when A = 0, X is the inverse of B. When A = 1, X is the same as B.

Answer

Using A as the control, when A = 0, X is the inverse of B. When A = 1, X is the inverse of B.

Question 7

Determine odd parity for each of the following data words: 1011101 11110111 1001101

Accepted Answer

P = 0, P = 0, P = 1

Answer

P = 1, P = 1, P = 0

Answer

P = 0, P = 0, P = 0

Answer

P = 1, P = 1, P = 1

Question 8

The Ex-NOR is sometimes called the ________.

Accepted Answer

equality gate

Answer

parity gate

Answer

inverted OR

Answer

parity gate or the equality gate

Question 9

What is the basic difference between AHDL and VHDL?

Accepted Answer

ADHL is proprietary.

Answer

ADHL is used in all PLD's.

Answer

VHDL is used in all PLD's.

Answer

VHDL is proprietary.