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A Web server is server software, or hardware dedicated to running said software, that can satisfy World Wide Web client requests. A web server can, in general, contain one or more websites. A web server processes incoming network requests over HTTP and several other related protocols.
Linux is the leading operating system on servers (over 96.4% of the top one million web servers' operating systems are Linux), [48] leads other big iron systems such as mainframe computers, [clarification needed] [49] and is used on all of the world's 500 fastest supercomputers [h] (as of November 2017, having gradually displaced all competitors).
A typical server rack, commonly seen in colocation. Size - one room of a building, one or more floors, or an entire building, Capacity - can hold up to or past 1,000 servers [56] Other considerations - Space, power, cooling, and costs in the data center. [57]
Messages are timestamped as they pass through each server, allowing for diagnosis of slow delivery, though analysis is complicated by time zones and computer clocks that are inaccurately set. [33] Email messages classified as spam by a spam filter may be sorted into a separate folder which the recipient must check manually, or may be dropped ...
On these operating systems, a program must open a separate socket for each IP protocol it uses. On some systems, e.g., the Linux kernel, NetBSD, and FreeBSD, this feature is controlled by the socket option IPV6_V6ONLY. [63]: 22 The address prefix 64:ff9b::/96 is a class of IPv4-embedded IPv6 addresses for use in NAT64 transition methods. [64]
The PLATO system was launched in 1960 at the University of Illinois and subsequently commercially marketed by Control Data Corporation.It offered early forms of social media features with innovations such as Notes, PLATO's message-forum application; TERM-talk, its instant-messaging feature; Talkomatic, perhaps the first online chat room; News Report, a crowdsourced online newspaper, and blog ...
The Windows Registry is a hierarchical database that stores low-level settings for the Microsoft Windows operating system and for applications that opt to use the registry. . The kernel, device drivers, services, Security Accounts Manager, and user interfaces can all use the regis