Understanding Packets and Transmission Methods

What is the main reason data is broken into packets before transmission?

• To increase packet size

• To reduce security

• To allow efficient and reliable transmission

• To avoid using protocols

Which of the following is NOT typically included in a data packet?

• Header

• Payload (data)

• Trailer

• CPU instructions

The header of a packet usually contains:

• Destination address and source address

• CPU usage statistics

• Only the raw data

• Application software name

In packet switching, what happens if packets arrive out of order?

• They are discarded

• They are reordered at the destination

• They are sent back to the sender

• They corrupt the data

Which of the following best describes packet switching?

• Packets travel along one dedicated path

• Packets take independent routes to the destination

• Packets are encrypted only once

• Packets can only travel in parallel transmission

What is the role of the trailer in a packet?

• Store the IP address

• Check for errors (e.g., using CRC)

• Encrypt the data

• Provide the packet size

Why is packet switching more efficient than circuit switching for internet traffic?

• It requires less error checking

• It allows multiple users to share network resources

• It dedicates a path for each user

• It avoids packet headers

What happens if a packet is lost during transmission?

• The whole file is deleted

• The receiver requests retransmission

• The packet is ignored

• The sender shuts down

Which transmission method sends data one bit at a time along a single channel?

• Parallel

• Serial

• Simplex

• Duplex

Which is faster for short distances but less reliable over long distances?

• Serial transmission

• Parallel transmission

• Packet switching

• USB transmission