Advanced level 2025 South regional mock ICT answer guide
Advanced level 2025 South regional mock ICT answer guide
1 B 11 C 21 B 31 B 41 D
2 B 12 C 22 C 32 B 42 B
3 B 13 B 23 A 33 B 43 B
4 A 14 C 24 B 34 A 44 C
5 A 15 C 25 B 35 C 45 C
6 A 16 A 26 C 36 B 46 C
7 C 17 B 27 B 37 B 47 C
8 C 18 C 28 D 38 A 48 A
9 B 19 C 29 D 39 B 49 A
10 D 20 B 30 C 40 D 50 D
PAPER 2 PROPOSED ANSWERS:
Question
number
1
Answer Mark
(i) a Sending multiple bits simultaneously over separate channels (e.g., 8 bits at once
via 8 wires).
Transmission of data bits concurrently using multiple wires
1
b Transmitting data one bit at a time sequentially over a single channel.
Sequential transfer of bits over a single communication line.
1
c Parallel:
Faster for short-distance communication (e.g., internal computer components).
Parallel: High bandwidth
Serial:
Cost-effective, reliable for long distances (e.g., USB, Ethernet).
Simplified wiring, reduced interference.
2
(ii) A B C C B + C X
0 0 0 0 1 1 1
0 0 1 1 0 0 1
0 1 0 1 1 1 0
0 1 1 1 0 1 0
1 0 0 1 1 1 0
1 0 1 1 0 0 1
1 1 0 1 1 1 0
1 1 1 0 0 1 1
4
(iii) Virus: Malware that self-replicates by modifying programs.
Phishing: Fraudulent emails/messages tricking users into sharing sensitive
data.
Pharming: Redirecting users to fake sites via DNS manipulation.
3
(iv) Data Bus: Transfers data between CPU, memory, and peripherals. 3
