Intel 8251 USART

Which of the following describes a key advantage of serial data transfer over parallel data transfer?

• Higher data rate

• Less complexity in wiring

• Reduced susceptibility to crosstalk

• All of the above

In parallel data transfer, how many bits are typically sent simultaneously?

• 1 bit

• 4 bits

• 8 bits

• Multiple bits, depending on the bus width

What is one major disadvantage of using parallel data transfer?

• Increased speed

• Reduced cost

• Signal degradation over long distances

• Simple implementation

Which of the following is an example of a protocol that uses serial data transfers?

• USB

• PCI

• IDE

• ATA

In parallel communication, what is the purpose of using a latch?

• To convert serial to parallel data

• To synchronize data transmission

• To store the bits until they are transmitted

• To increase the data transfer rate

Which transmission mode allows data to be sent in only one direction?

• Duplex

• Half-Duplex

• Simplex

• Full-Duplex

In which mode of transmission can data be sent and received, but not simultaneously?

• Simplex

• Half-Duplex

• Full-Duplex

• Serial

Which of the following is an example of a full-duplex communication system?

• A keyboard to a computer

• A walkie-talkie

• A telephone conversation

• A computer printer receiving data

What is one of the main disadvantages of half-duplex communication compared to full-duplex?

• It uses more bandwidth

• It requires more complex hardware

• It does not support two-way communication at the same time

• It is slower than simplex communication

Which of the following devices typically operates in simplex mode?

• Two-way radio

• Video surveillance camera

• Internet chat application

• Telephone