Subject

    Computer Science

    Topic

    Computer Hardware

    In the AT command set, the standard hang-up command is:

    a)
    ATHU
    b)
    ATH
    c)
    ATZ
    d)
    ATX

    Explanation

    ATH instructs the modem to go on-hook (hang up). ATZ resets, ATA answers, and ATX sets result-code options. These commands are universal across Hayes-compatible modems.

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