WAEC Data Processing 2025 Theory — Question 8
Question 8 of 19 from the West African Examinations Council (WAEC) Data Processing 2025 Theory paper, with the correct answer and a full explanation.
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3(b) State one example of each: (i) simplex mode (ii) half-duplex mode (iii) full-duplex mode of information transmission
Model answer
(i) Simplex: Television, Radio broadcast, Facsimile, or Traffic Light System (any one) (ii) Half-Duplex: Walkie-talkie, Ethernet hubs, Facebook Messenger, or Pager (any one) (iii) Full-Duplex: Telephone (Telephony), Video conferencing/Zoom/Skype, Bluetooth call, or Satellite communication (any one)
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