Online quizzes and practice questions, as well as other homework activities, will be linked to here as they become available.
Some hints on answering questions in Moodle.
Concepts of data communications and networks, as well as course syllabus.
Signal equations, frequency, bandwidth, spectrum and data rate.
A set of questions that aim to illustrate the relationship between bandwidth, data rate and errors.
Nyquist and Shannon capacity calculations, as well as basics of dB, gain and loss.
Antenna gain and path loss calculations; simple encoding of digital data as digital signals (e.g. NRZ, Bipolar AMI, Manchester)
Covering signal encoding techniques (shift keying, modulation), PCM and simple performance metrics such as throughput, delay and overhead.
Practice questions on parity-bit error detection, Hamming-distance FEC and general concepts. Not assessed.
Stop-and-wait flow control; sliding-window flow control; stop-and-wait ARQ. Includes questions that require calculations (have a calculator and pen/paper ready). One of the questions is on sliding-window flow control - see an 8-minute video on how to answer a similar question (from 2014).
Comparing circuit and packet switching. Routing basics, including routing tables.
Concepts of LANs and WANs, including classifying networks and topologies, as well as details of Ethernet. You should watch the first 40 minutes of last years Ethernet lecture before taking this quiz.
Concepts of internetworking, details of IP, and several IP address questions.
Random questions chosen from past quizzes for final exam practice. You must make at least one attempt (giving answers for all questions). If you make one attempt at this practice (no matter what your score is), and attempted the practice lesson on packets (which is no longer available), then you will get full marks for Quiz 10.