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Apc

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Apc

  1. 1. APACHE Configure HTTPS The configure script configures the source tree for compiling and installing the Apache HTTP Server on your particular platform. Various options allow the compilation of a server corresponding to your personal requirements. SSL and HTTP Both netscap navigator and internet explorer SSL, and many web site use the protocol to obtain confidential user information, such as credit card numbers. Whereas SSL creates between a client and server , over which any amount of data can be sent securely, S-HTTP is designed to transmit individual messages securely. The Hypertext Transfer Protocol (HTTP) is an application layer protocol for distributed, collaborative, hypermedia information systems. HTTP is a request response standard typical of client-server computing. In HTTP, web browser typically act as clients, while an application running on the computer hosting the website acts as a server.
  2. 2. Document root The document root is a directory (a folder) that is stored on your host's servers and that is designated for holding web pages. When someone else looks at your web site, this is the location they will be accessing. In order for a website to be accessible to visitors, it must be published to the correct directory, the "document root." You might think that there would only be one directory in your space on your host's servers, but often host provide services beyond just a website. In this case, they are likely to set up every account with several directories, since each service would require its own. Remember, every host is different , so yours will probably not look exactly like the picture above. Yours is quite likely to have a completely different set of folders. It might even have none. Server root On the Internet, the root server system is the way that an authoritative master list of all top-level domain names (such as com, net, org,and individual country codes) is maintained and made available to all routers. The system consists of 13 file servers. The central or "A" server is operated by Network Solutions, Inc., the company that originally managed all domain name registration, and the master list of top-level domain (TLD) names is kept on the A server. On a daily basis, this list is replicated to 12 other geographically
  3. 3. dispersed file servers that are maintained by an assortment of agencies. The Internet routing system uses the nearest root server list to update routing tables. Configuration File This article explains configuration files on a Linux system that control user permissions, system applications, daemons, services, and other administrative tasks in a multi-user, multi-tasking environment. These tasks include managing user accounts, allocating disk quotas, managing e-mails and newsgroups, and configuring kernel parameters. This article also classifies the config files present on a Red Hat Linux system based on their usage and the services they affect. Error Log The error log files are most important, since they can act as an indicator for any irregular performance of your site. The error log file records any errors that the server encounters in processing requests i.e. when your site is not able to respond to your visitors. The recorded comprehensive information contains details of what exactly went wrong, so you can find a way to fix it immediately. Execution time
  4. 4. The time during which actual work, such as addition or multiplication, is carried out in the execution of a computer instruction. The time in which a single instruction is executed. It makes up the last half of the instruction cycle.

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