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The document discusses various aspects of configuring and using the Apache HTTP Server including configuring HTTPS, SSL and HTTP protocols, document roots, server roots, configuration files, error logs, and execution time. Specifically, it provides information on configuring the Apache source tree, how SSL creates secure connections between clients and servers, what document and server roots are, the role of configuration files in managing Linux systems, how error logs can help identify site performance issues, and what execution time refers to in computer instructions.
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The document discusses Active Directory and its components. Active Directory is a directory service that stores information about network objects like users and passwords. It uses LDAP, Kerberos, and DNS protocols. LDAP allows reading/editing directories over IP networks. Kerberos provides secure authentication between nodes. DNS translates names to IP addresses. Active Directory provides services like domain services, lightweight directory services, certificate services, rights management, and federation services.
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Radó Péter: a felsőoktatás átalakítása
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The document provides a history of the origins and development of the Internet from the 1960s to the 1990s. It describes how ARPANET was developed in the 1960s by the US Department of Defense and its Advanced Research Projects Agency (ARPA) to enable resource sharing between researchers. It evolved into a "network of networks" known as the Internet in the 1990s through networks like NSFNET that connected universities. The document also gives brief overviews of web browsers, web servers, URLs, and the Hypertext Transfer Protocol.
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Lecture 4 -_internet_infrastructure_2_updated_2011
Lecture 4 -_internet_infrastructure_2_updated_2011
serverspaperpresentation-120107050051-phpapp01 (1).pptx
serverspaperpresentation-120107050051-phpapp01 (1).pptx
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The document discusses file uploading in PHP. It explains how to create an HTML form to allow users to select a file to upload. It then shows the PHP code needed to handle the file upload by moving the uploaded file to a specified folder on the server. Session variables in PHP are also covered, including how to start a session, store session data in the $_SESSION variable, and destroy a session. Cookies are defined as small files stored on a user's computer that are sent back to the server on subsequent page requests to identify the user. The document demonstrates how to create, retrieve, and delete cookie values in PHP.
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The document provides information on various SQL commands used for data manipulation and control, database objects like tables and schemas, users and privileges in SQL. It discusses commands like COMMIT, ROLLBACK, GRANT, REVOKE used for transactions and managing privileges. It also summarizes creation, alteration and deletion of database objects using commands like CREATE, ALTER, DROP and functions like SELECT, INSERT, UPDATE, DELETE for data manipulation. The document further discusses concepts like stored procedures in SQL and use of phpMyAdmin for administering MySQL databases.
Mysql
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This document provides steps to install LAMP (Linux, Apache, MySQL, PHP) on a Linux system. It first checks if LAMP is already installed and uninstalls it if present. It then outlines downloading the Xampp installer, navigating to the downloads folder, copying the file to the opt directory, extracting it, and starting the LAMP server. Finally, it provides steps to test the installation at localhost and configure Xampp to automatically start on system boot.
Php
To upload files from a browser to a server using PHP, an HTML form allows users to select a file to upload. PHP code then moves the uploaded file to the specified target folder. Session variables store user information across pages, while cookies identify users by embedding a small file on their computer. Common PHP errors include notices, warnings, and fatal errors. Functions like error_log() send errors to logs and parse_ini_file() parses configuration files.
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Apc
- 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. 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. 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. 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.