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  2. List of FTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_FTP_server_return...

    Connections Replies referring to the control and data connections. x3x: Authentication and accounting Replies for the login process and accounting procedures. x4x: Unspecified as of RFC 959. x5x: File system These replies indicate the status of the Server file system vis-a-vis the requested transfer or other file system action.

  3. Duplex mismatch - Wikipedia

    en.wikipedia.org/wiki/Duplex_mismatch

    The end result is a connection that is working but performs extremely poorly because of the duplex mismatch. Symptoms of a duplex mismatch are connections that seem to work fine with a ping command, but "lock up" easily with very low throughput on data transfers; the effective data transfer rate is likely to be asymmetrical, performing much ...

  4. List of SMTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SMTP_server_return...

    The first digit denotes whether the response is good, bad, or incomplete: 2yz (Positive Completion Reply): The requested action has been successfully completed. 3yz (Positive Intermediate Reply): The command has been accepted, but the requested action is being held in abeyance, pending receipt of further information.

  5. SYN flood - Wikipedia

    en.wikipedia.org/wiki/SYN_flood

    The connections are hence half-opened and consuming server resources. Legitimate user Alice (purple) tries to connect, but the server refuses to open a connection, a denial of service. A SYN flood is a form of denial-of-service attack on data communications in which an attacker rapidly initiates a connection to a server without finalizing the ...

  6. Wi-Fi Protected Setup - Wikipedia

    en.wikipedia.org/wiki/Wi-Fi_Protected_Setup

    Some devices with dual-band wireless network connectivity do not allow the user to select the 2.4 GHz or 5 GHz band (or even a particular radio or SSID) when using Wi-Fi Protected Setup, unless the wireless access point has separate WPS button for each band or radio; however, a number of later wireless routers with multiple frequency bands and ...

  7. Features new to Windows 8 - Wikipedia

    en.wikipedia.org/wiki/Features_new_to_Windows_8

    The Calculator app running in Windows 8.1. A number of apps are included in the standard installation of Windows 8, including Mail (an email client), People (a contact manager), Calendar (a calendaring app), Messaging (an IM client), Photos (an image viewer), Music (an audio player), Video (a video player), Camera (a webcam or digital camera client), SkyDrive, Reader (an e-book reader), and ...

  8. SWR meter - Wikipedia

    en.wikipedia.org/wiki/SWR_meter

    Because all frequencies above minimum contribute, the measured ratio is a single frequency quality measure, that increases with unintended harmonics and spurious emissions, as well as actual SWR. By analogy, the measurement cable is a crystal radio (non-discriminating receiver) representing all the radio receivers that might suffer interference ...

  9. Metered reply mail - Wikipedia

    en.wikipedia.org/wiki/Metered_reply_mail

    Metered reply mail, or MRM, is a type of mail in which a business sends pre-printed, self-addressed envelopes or postcards to customers, with postage prepaid on the envelopes or postcards with a postage meter. [1] It is thus similar to courtesy reply mail with a postage stamp already affixed.