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A server is a computer or software system that provides resources, data, or services to other devices (clients) over a network. Servers play a crucial role in hosting applications, websites, and databases.

Types of Servers

  1. Web Server:

    • Hosts websites or web applications.
    • Examples: Apache, Nginx, Microsoft IIS.
  2. Application Server:

    • Runs specific business applications and logic.
    • Examples: JBoss, Tomcat, WebLogic.
  3. Database Server:

    • Stores and manages database services.
    • Examples: MySQL Server, PostgreSQL Server, MongoDB Server.
  4. File Server:

    • Provides centralized file storage and access.
    • Examples: Samba, Windows File Server.
  5. Email Server:

    • Manages email delivery and reception.
    • Examples: Microsoft Exchange, Postfix.
  6. Game Server:

    • Supports multiplayer gaming environments.
    • Examples: Dedicated Minecraft or CS:GO servers.

Physical vs. Virtual Servers

  • Physical Server: Dedicated hardware, often in data centers.
  • Virtual Server: Software-defined and runs on a physical host. Uses virtualization tools like VMware or Hyper-V.
  • Cloud Server: A virtualized server hosted in the cloud. Examples: AWS EC2, Azure Virtual Machines.

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