Network servers are dedicated systems that provide resources, data, services, or programs to other computers (clients) over a network. Common types include:

• Web Server: Hosts websites and delivers web pages via HTTP/HTTPS.
• File Server: Stores and manages shared files across a network.
• Mail Server: Handles sending, receiving, and storing emails (e.g., SMTP, IMAP).
• DNS Server: Translates domain names to IP addresses.
• Database Server: Manages database access and queries (e.g., MySQL, PostgreSQL).
• Application Server: Runs business logic and applications for clients.

Key Components: High availability, redundancy, security (firewalls, encryption), and scalable hardware (multi-core CPUs, ECC RAM, RAID storage).