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The Internet Assigned Numbers Authority (IANA) maintains the official registry of HTTP status codes. [2] All HTTP response status codes are separated into five classes or categories. The first digit of the status code defines the class of response, while the last two digits do not have any classifying or categorization role.
First, search for the site in the list using this tool or some other method. If the site is in the meta blacklist then you can't remove it here; such requests should be closed and tagged {{defermetablack}}. Investigate why the site was blacklisted to begin with. This will almost always be linked from the search page in step 1.
When the other task is blocked, it is unable to execute until the first task has finished using the shared resource. Programming languages and scheduling algorithms are designed to minimize the over-all effect of blocking. A process that blocks may prevent local work-tasks from progressing. In this case "blocking" often is seen as not wanted. [2]
In the case of executable files, the icon will have a security shield overlay. The following tasks require administrator privileges: [9] [10] Running an Application as an Administrator; Changes to system-wide settings; Changes to files in folders that standard users don't have permissions for (such as %SystemRoot% or %ProgramFiles% in most cases)
A request to the OS is usually in the form of a system call, (i.e. a call from the running process to a function that is part of the OS code). For example, a process might become BLOCKED if it is requesting a file from disk or a saving a section of code or data from memory to a file on disk.
A1: A block prevents a user account, an IP address, or a range of IP addresses from editing Wikipedia, either partially or entirely. Blocked users can still open, access, and read any article or page on Wikipedia; they just cannot modify or edit any pages that are restricted by the block.
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With the advent of interrupts and preemptive multitasking, I/O bound processes could be "blocked", or put on hold, pending the arrival of the necessary data, allowing other processes to utilize the CPU. As the arrival of the requested data would generate an interrupt, blocked processes could be guaranteed a timely return to execution.