Computer Networks, unit: Wireless and Mobile Networks. Core concepts, terminology, and worked-example cues a college student meets for this unit, building on prior units without repeating them. Front: a term, concept, or short problem cue. Back: the definition, explanation, or answer.
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- What is a wireless network?
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A network that connects devices without physical cables, using radio waves- What is Wi-Fi?
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A family of wireless networking standards based on the IEEE 802.11 specifications- What is an access point?
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A device that allows wireless devices to connect to a wired network- What is SSID (Service Set Identifier)?
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The name broadcast by a wireless network for devices to identify and connect to it- What is WPA/WPA2/WPA3?
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Security protocols used to protect wireless networks from unauthorized access- What is a cellular network?
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A wireless network made of overlapping coverage areas (cells), each served by a base station- What does 4G/5G refer to in mobile networking?
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Successive generations of cellular network technology offering increasing speed and capability- What is Bluetooth?
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A short-range wireless technology for connecting devices like headphones or keyboards- What is roaming, in cellular or Wi-Fi networks?
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A device moving between coverage areas while maintaining connectivity- What is a mesh network?
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A network topology where devices relay data for each other, extending coverage without a single central point- What is signal interference in wireless networks often caused by?
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Overlapping frequencies from other devices or physical obstructions- What is a hotspot?
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A location providing wireless internet access, often through a mobile device or dedicated access point- What is NFC (Near Field Communication)?
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A very short-range wireless technology used for contactless payments and data exchange- What is the main tradeoff of wireless networks compared to wired networks?
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Greater convenience and mobility, at the cost of potentially lower speed, reliability, and security- What is channel selection important for in Wi-Fi networks?
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Reducing interference between nearby wireless networks sharing overlapping frequencies
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