Award up to two marks for a linked explanation such as:
- A LAN covers a small geographical area (1) because all the charity's computers are in one building/on one site (1)
- The charity can use its own cabling/equipment (1) so it does not need to rent leased lines from a telecoms provider (1)
- The charity owns the infrastructure (1) so it avoids the cost of leased lines/external connections that a WAN needs (1)
- The devices are close together (1) so the LAN can use short, high-speed cabling (1)
For both marks, the expansion must follow/associate with the statement.
Do not accept 'it is faster/better/cheaper' on its own without a linked reason (e.g. short distance, own cabling, no leased lines).
Allow 'the LAN is private/secure' only with a linked reason such as the charity controls its own equipment.
Do not accept 'a LAN is local' or 'a WAN is too far/expensive' without a linked reason about the small area or leased lines.
Do not accept 'the computers are in one building/on one site' on its own because it repeats the stem; it must be linked to a reason such as a LAN covering a small geographical area.
Do not accept 'stronger Wi-Fi/signal' as a reason.
Do not accept 'can share files/printers' on its own because this is a reason for any network, not for choosing a LAN over a WAN.