Chapter 1
Networking Concepts
Course: Comptia Network N10 009 Practice Test
Subject: Comptia Network N10 009
Chapter: Networking Concepts
Networking ports and protocols are essential for communication between devices in any network. Each protocol serves a specific function, such as file transfer, email communication, remote access, or web browsing. Below are detailed explanations of these protocols and their associated ports, along with real-world applications and technical insights.
Common Protocols, Ports, and Services
1. File Transfer Protocol (FTP) - Ports 20/21
- File Transfer Protocol (FTP) is a standard protocol for transferring files between a client and a server over a network. It has been widely used for many years to facilitate file sharing, distribution, and access. FTP utilizes two specific ports:
- Port 21: For sending control commands (e.g., login credentials, file operation commands).
- Port 20: For transferring actual file data during active connections.
- FTP is foundational in networking but lacks built-in encryption, making it an insecure option for transferring sensitive data. Technical Details:
- How FTP Works: