Why this matters
"The system is down" is one of the most common calls in any Ghanaian office. A bank teller cannot reach the core banking system, a school cannot open its results portal, a shop's till cannot confirm MoMo payments. Very often the cause is the network: a cable, a router, an expired data bundle, a wrong address or a name that cannot be found. IT support adverts in Ghana ask again and again for network troubleshooting, LAN and Wi-Fi knowledge, router and switch setup and basic networking concepts. Network certifications such as CCNA and Network+ appear as preferred qualifications in several of them.
The big picture
A network is two or more devices connected so they can share information. A small office network usually looks like this:
- An internet connection from a provider: a fibre box, a 4G or 5G router, or a pocket MiFi running on a data bundle.
- A router that connects the office to the internet, hands out addresses and often provides Wi-Fi.
- A switch with many ports, so several wired computers, printers and phones can join.
- Access points that spread Wi-Fi to other rooms.
- Cables, usually Ethernet, linking it together.
A local area network (LAN) is the network inside one building. A wide area network (WAN) links distant sites, such as a bank's branches in Tamale and Accra.