Unit 2 and Unit 3 Quiz

Which of the following best describes the transmission of data in a single direction only?

• Full-duplex

• Simplex

• Half-duplex

• Duplex

Which method of data transmission allows data to be sent and received simultaneously?

• Simplex

• Half-duplex

• Full-duplex

• Semi-duplex

In which type of data transmission is data sent in both directions, but not at the same time?

• Simplex

• Half-duplex

• Full-duplex

• Asynchronous

What is the primary advantage of serial transmission over parallel transmission?

• Faster data transfer rate

• Less risk of data collisions

• More complex

• Shorter transmission distances

Which of the following is a method of parallel data transmission?

• USB

• HDMI

• SCSI

• Ethernet

Which of the following error detection methods adds an extra bit to the data to make the total number of 1's either odd or even?

• Parity bit

• Checksum

• Hamming code

• CRC (Cyclic Redundancy Check)

Which error detection method uses a division operation to calculate a checksum?

• Parity bit

• Checksum

• Hamming code

• CRC

What is the key feature of the Cyclic Redundancy Check (CRC) method of error detection?

• It uses division to detect errors.

• It adds parity bits to the message.

• It detects errors in data but cannot correct them.

• It requires a fixed-size message length.

Which of the following methods can detect two-bit errors?

• Parity bit

• Hamming code

• Checksum

• Cyclic Redundancy Check (CRC)

Which of the following error detection methods can correct single-bit errors and detect double-bit errors?

• Parity bit

• Hamming code

• Checksum

• CRC