Do you have basic knowledge of TCP/IP, Proxy, Load Balancer, and VPN?

Yes, basic knowledge of these topics is important for understanding network infrastructure and ensuring application reliability.

• TCP/IP is a set of protocols for data transmission in a network. TCP provides reliable data delivery by establishing a connection and checking integrity, while IP handles addressing and routing of packets.

• Proxy (proxy server) is an intermediary between the client and server, which can cache data, filter requests, provide anonymity, or load balance.

• Load Balancer distributes incoming traffic among multiple servers to improve performance and fault tolerance.

• VPN (Virtual Private Network) creates a secure encrypted connection over a public network, allowing safe access to remote resources.

Example: In a corporate network, VPN allows employees to work safely from home, and a load balancer distributes requests among several web servers so that the site does not crash under high load.