T Level Digital: Network Types, Topologies and Models

Networks are part of the digital environments content in every Pearson digital T Level core, whether the route is Digital Software Development, Digital Support and Security or Digital Data Analytics. The core is assessed through two written papers and an employer-set project, and network questions on the papers usually describe an organisation and ask what it should choose or what will happen when something fails. This material covers the first half of that content: the kinds of network, how devices are connected, how they are arranged and which device does which job. A second material on network models, packets and protocols covers the layers and the protocols that run over them.

The quiz has twelve questions set in invented organisations. Three ask you to name a network type from its reach: a physiotherapist's phone, watch and chest strap, a council linking sites across a town, and home workers who need to reach office files securely. One asks you to choose fibre over copper for a 400-metre link beside heavy machinery. Four are about topology: counting the fifteen cables in a full mesh of six servers, why the cost of a mesh can be worth paying, which computers lose their connection when one switch in a tree fails, and a network that is cabled as a star but passes data around as a ring. Two compare network models: a design studio that has outgrown peer-to-peer sharing, and a library that moves to thin clients. The last two separate a router, which moves packets between networks, from a switch, which delivers frames inside one. Each explanation says why the key fits the scenario and why the tempting alternative does not.

The flashcards cover each network type, the trade-offs between fibre, copper and wireless, the mesh formula, each topology and model, and the roles of routers, switches, access points and the internet backbone.

The written work has eight tasks to answer on paper: the benefits and drawbacks of networking an office, comparing fibre, copper and wireless for two different links, a mesh against a star for eight servers with the links counted, physical against logical topology, the jobs of a router, a switch and an access point, and when to use a MAN rather than a LAN or WAN. Two are longer, evaluative answers of the kind used for the higher-mark questions: whether a growing studio should move to client-server, and whether thin clients suit a public library. Each has a model answer and the points a marker would look for.

There is also a short oral practice with an examiner, who describes every layout in words, asks one question at a time and gives brief feedback at the end.

• Identify PAN, LAN, MAN, WAN and VPN from a description and state what each is used for
• Choose between copper Ethernet, fibre-optic and wireless connections and justify the choice
• Calculate the number of links in a full mesh and compare mesh, star and tree topologies
• Distinguish physical from logical topology
• Evaluate client-server, thin-client and peer-to-peer models for an organisation
• Explain the roles of a router, a switch, an access point and the internet backbone

Practice material written by Zestly, based on the core content of the Pearson T Level Technical Qualifications in Digital Software Development, Digital Support and Security and Digital Data Analytics (first teaching September 2025), content area 7.3: networks (types, connectivity, topologies, models and components).