Types and methods of data transmission：练习题

Which of the following describes the function of a trailer in a data packet?

Which of the following information is not typically found in the header of a data packet according to the IGCSE syllabus?

An old computer system uses a simplex transmission method to send data to a monitor. If the monitor needs to send an 'out of paper' signal back to the computer, why is this impossible under the current setup?

Which part of a data packet contains the actual data that is being transmitted between computers?

When a large file is sent across the internet using packet switching, which of the following is true regarding the path and arrival of the packets?

Identify one disadvantage of using parallel data transmission rather than serial data transmission when sending data over long distances.

Describe the components typically found in the header of a data packet.

Explain why parallel data transmission is generally restricted to very short distances, such as those within a computer's internal circuitry, rather than being used for external networking.

Data transmission can occur in different modes. Distinguish between simplex, half-duplex, and full-duplex data transmission modes, providing a real-world example for each to illustrate their differences.

Data is transmitted across networks using various methods and modes.

a) Explain the process of packet switching when data is sent from a source to a destination over a network, including what happens if packets arrive out of order.

b) Compare serial data transmission and parallel data transmission. State one advantage of serial transmission over parallel, especially for long distances.