Edexcel GCSE Computer Science (1CP2) Exam Questions

• C WAN (1)
• The only correct answer is C. The correct answer is WAN, which connects networks over a large geographical area.
• A is not correct because a LAN covers a limited area such as one building or site
• B is not correct because a PAN connects devices around one person
• D is not correct because a WLAN is a LAN that uses wireless connections and is still local

Award one mark for any of the following up to a maximum of two marks:

• If one cable/device fails, the other devices are not affected (1)
• Fast data transfer/high performance because each device has its own cable/connection (1)
• Easy to add/remove devices (1)
• Fault finding is easier because each device has its own cable (1)
• The switch forwards data only to the destination device, so other devices do not receive it (1)

Do not accept disadvantages, such as the whole network going down if the central switch fails

Do not accept fast/faster/reliable/more reliable on their own, without a reason

Award one mark for each of:

• 5 × 1024^3 / 5 × 1024 × 1024 × 1024 / 5 × 2^30, for the number of bytes (1)
• A fully correct expression with × 8 to convert bytes to bits, in any order, e.g. 5 × 1024^3 × 8, 8 × 5 × 2^30 (1)

Accept 5 × 1 073 741 824 × 8.

Accept 5 × 2^33 or 42 949 672 960 as a fully correct expression (2 marks).

Do not accept 5 × 1000^3 × 8, which uses decimal multiples.

Do not accept ÷ 8, which converts bits to bytes.