Wi-Fi and cellular technologies share the radio spectrum.
Wi-Fi (IEEE 802.11) uses CSMA/CA and bands at 2.4, 5 and 6 GHz; cellular networks (4G LTE, 5G NR) use cells, handover and licensed spectrum. Trade-offs: range, capacity, interference and power. Mesh and beamforming improve coverage.
Wi-Fi 6 improves throughput in crowded environments through OFDMA.
Wireless networks give mobility and convenience, but they share spectrum and have different range, speed and security concerns.
Wi-Fi and cellular technologies share the radio spectrum.
Wireless networks give mobility and convenience, but they share spectrum and have different range, speed and security concerns.
The radio channel is shared, so more devices compete for airtime, which reduces the throughput each device gets.
Wi-Fi uses unlicensed spectrum for short-range local networks, while cellular uses licensed bands managed by operators for wide coverage.
Typical applications include choosing Wi-Fi 6 for a crowded office, using LTE for a remote sensor that has no wired network and planning channel use to reduce interference in a warehouse.
Study "Network security basics" first (topic 71 of 104 in Software & Computing). It covers the groundwork this topic builds on.
Signal-to-noise ratio. Channel width. Roaming.
Wi-Fi 6 improves throughput in crowded environments through OFDMA.
The next topic is "Cloud computing", which builds directly on this one.
It is classed as Advanced in Software & Computing (topic 72 of 104). It is an advanced topic. It assumes you are comfortable with the intermediate topics in Software & Computing.
Want to practise? Open the interactive course for quick checks, quizzes, simulations and progress tracking.