Internet quiz
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What carries data in long-distance internet cables?
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More questions about Internet
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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What do the bars on a Wi-Fi icon show?
Answer: Signal strength
Why: Full bars only mean a strong radio link to the router; the router's own line to your provider can still be down.
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Which letters made up the first ARPANET message?
Answer: LO
Why: The aim was to type LOGIN, but the system crashed as soon as the third letter, G, was typed.
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How many lettered root servers sit at the top of DNS?
Answer: 13
Why: Anycast lets many machines answer as one letter, so over 1,900 root server copies run around the world.
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What does the G in 4G and 5G stand for?
Answer: Generation
Why: Wi-Fi networks often end in 5G to mark the 5 GHz band, which has nothing to do with 5G mobile networks.
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Which threat causes most breaks in undersea data cables?
Answer: Fishing and anchors
Why: Fish bites, a category that includes sharks, caused zero cable faults between 2007 and 2014.
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Roughly how fast does light travel through optical fiber?
Answer: 200,000 km/s
Why: Radio waves through air beat light through glass, so some stock traders link Chicago and New York by microwave instead.
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