Types and methods of data transmission
2.1What the syllabus asks of you
- (a) Understand that data is broken down into packets to be transmitted (b) Describe the structure of a packet • A packet of data contains a: – packet header – payload – trailer • The packet header includes the: – destination address – packet number – originator’s address (c) Describe the process of packet switching • Data is broken down into packets • Each packet could take a different route • A router controls the route a packet takes • Packets may arrive out of order • Once the last packet has arrived, packets are reordered
- (a) Describe how data is transmitted from one • Including: device to another using different methods – serial of data transmission – parallel – simplex – half-duplex – full-duplex (b) Explain the suitability of each method of • Including the advantages and disadvantages of data transmission, for a given scenario each method
- Understand the universal serial bus (USB) • Including the benefits and drawbacks of the interface and explain how it is used to transmit interface data
Read the notes first
Chapter 2: Types and methods of data transmission
Drill this topic
All 11 questions on Types and methods of data transmission, untimed — answer on paper, then mark yourself against the mark scheme.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
11 questions
These are structured questions, answered in working rather than by picking an option, so they are not listed here one by one. The drill above puts each in front of you with its mark scheme to check against.