CompTIA Security+ Networking Fundamentals Quiz

Network Protocols and Security

• HTTP (Hypertext Transfer Protocol) is commonly blocked at firewalls to prevent unauthorized access to web servers and mitigate security risks.
• ARP (Address Resolution Protocol) resolves MAC (Media Access Control) addresses for IPv4, allowing devices to find each other's physical addresses on a local network.
• FTP (File Transfer Protocol) is used for transferring files over a network and is often blocked at firewalls due to its known security vulnerabilities and potential for unauthorized data transfer.
• HTTPS (Hypertext Transfer Protocol Secure) is utilized for secure communication over the web, combining HTTP with SSL/TLS encryption; it is commonly used for email services and other web applications.
• SSH (Secure Shell) is used for secure remote access and commonly operates on port 22, providing an encrypted channel for secure login and data transfer over unsecured networks.