MODULE 2

• HTML - is the standard markup language for Web pages. With HTML you can create your Website.
• E - mail - Electronic mail (email or e-mail) is a method of exchanging messages ("mail") between people using electronic devices
• Voice over IP (VOIP) - is a technology that allows you to make voice calls using a broadband Internet connection instead of a regular (or analog) phone line.
• Online game - a video game that is either partially or primarily played through the Internet or any other computer network available.
• World Wide Web - commonly known as the Web, is an information system where documents and other web resources are identified by Uniform Resource
• Locators (URLs, such as https://example.com/), which may be interlinked by hypertext, and are accessible over the Internet.
• File sharing - is the practice of distributing or providing access to digital media, such as computer programs, multimedia (audio, images, and video), documents, or electronic books.
• A server is a computer program or device in the network that provides resources, data, services, or programs to the client’s computer such as login requests processing, file access and storage, internet access, printing access, and many other types of services.
• Type of Computer Server

  • Print server
  • Mail server
  • Fax server
  • Telephony server
  • Proxy server
  • Remote Access Server (RAS)
  • Web server
  • Database server
  • Backup server
  • Security Server
• Print server: controls one or more printers and accepts print jobs from other clients on the network, queuing print jobs (although you can also change the priority of different printouts), and performing most or all of the other functions that in a workplace would be carried out to obtain a task of an impression if the printer was connected directly with the port of printer of the place of work.
• Mail server: stores, sends, receives routes, and performs other operations related to e-mail for clients on the network.
• Fax server: stores, sends, receives routes, and performs other functions necessary for the proper transmission, reception, and distribution of faxes.
• Telephony server: performs functions related to telephony, such as answering machines, performing the functions of an interactive system for a voice response, storing voice messages, routing calls, and controlling the network or the internet. E.g., excessive voice-over IP (VOIP) entry, etc.
• Proxy server: performs a specific type of function on behalf of other clients in the network to increase the operation of specific operations (e.g., prefetching and depositing documents or other data that are requested very frequently), also provides security services, that is, it includes a firewall. It allows managing access to the internet in a computer network allowing or denying access to different websites.
• Remote Access Server (RAS): controls the modem lines of the monitors or other communication channels of the network so that the requests connect to the network from a remote location, answer incoming telephone calls or acknowledge the request of the network and perform the necessary authentication and other necessary procedures to register a user in the network.
• Web server: stores HTML documents, images, text files, scripts, and other Web material composed of data (collectively known as content), and distributes this content to clients who request it on the network.
• Database server: provides database services to other programs or other computers, as defined by the client-server model. You can also refer to those computers (servers) dedicated to executing those programs and providing the service.
• Backup server: has the network backup software installed and has large amounts of network storage on hard drives or other forms of storage (tape, etc.) available for use to ensure that the primary server’s loss does not affect the network. This technique is also called clustering.
• Security Server: It has specialized software to stop malicious intrusions. Usually, they have antivirus, antispyware, and antimalware, in addition to having redundant firewalls of different levels and layers to avoid attacks, the security servers vary depending on their use and importance.
• The function of a Computer Server

  • to store
  • retrieve
  • send or "serve" files and data to other computers on its network.
• A NETWORK SERVICE is an application running at the network application layer and above, that provides data storage, manipulation, presentation, and communication or another capability which is often implemented using a client-server or peer-to-peer architecture based on application layer network protocols.
• • e-mail
  • File sharing
  • Online game
  • Printing
  • World Wide Web