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  2. List of SIP response codes - Wikipedia

    en.wikipedia.org/wiki/List_of_SIP_response_codes

    The server has received a request that requires a negotiated security mechanism, and the response contains a list of suitable security mechanisms for the requester to choose between,: §§2.3.1–2.3.2 or a digest authentication challenge.: §2.4 5xx—Server Failure Responses 500 Internal Server Error

  3. Kernel panic - Wikipedia

    en.wikipedia.org/wiki/Kernel_panic

    Prior to 10.2, a more traditional Unix-style panic message was displayed; in 10.8 and later, the computer automatically reboots and displays a message after the restart. The format of the message varies from version to version: 10.0–10.1: The system displays text on the screen, giving details about the error, and becomes unresponsive.

  4. Reed–Solomon error correction - Wikipedia

    en.wikipedia.org/wiki/Reed–Solomon_error...

    The first element of a CIRC decoder is a relatively weak inner (32,28) Reed–Solomon code, shortened from a (255,251) code with 8-bit symbols. This code can correct up to 2 byte errors per 32-byte block. More importantly, it flags as erasures any uncorrectable blocks, i.e., blocks with more than 2 byte errors.

  5. Monopulse radar - Wikipedia

    en.wikipedia.org/wiki/Monopulse_radar

    Monopulse radar is a radar system that uses additional encoding of the radio signal to provide accurate directional information. The name refers to its ability to extract range and direction from a single signal pulse. Monopulse radar avoids problems seen in conical scanning radar systems, which can be confused by rapid changes in signal strength.

  6. Mono (software) - Wikipedia

    en.wikipedia.org/wiki/Mono_(software)

    Mono is a free and open-source .NET Framework -compatible software framework. Originally by Ximian, it was later acquired by Novell, and is now being led by Xamarin, a subsidiary of Microsoft [4] and the .NET Foundation. Mono can be run on many software systems .

  7. Machine-check exception - Wikipedia

    en.wikipedia.org/wiki/Machine-check_exception

    On Linux, the kernel writes messages about MCEs to the kernel message log and the system console. When the MCEs are not fatal, they will also typically be copied to the system log and/or systemd journal. For some systems, ECC and other correctable errors may be reported through MCE facilities. Example:

  8. Type I and type II errors - Wikipedia

    en.wikipedia.org/wiki/Type_I_and_type_II_errors

    Type I and type II errors. In statistical hypothesis testing, a type I error, or a false positive, is the rejection of the null hypothesis when it is actually true. For example, an innocent person may be convicted. A type II error, or a false negative, is the failure to reject a null hypothesis that is actually false.

  9. Refractive error - Wikipedia

    en.wikipedia.org/wiki/Refractive_error

    Refractive error; Other names: Refraction error: A correctly-focused eye (top), and two showing refractive error: in the middle image, the light is focused too far forward; in the bottom image, the focal point is behind the eye: Specialty: Ophthalmology, optometry: Symptoms: Blurry vision, double vision, headaches, eye strain: Complications