CompTIA Network+ Practice Test

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Prepare for the CompTIA Network+ Exam. Utilize flashcards and multiple choice questions with detailed hints and explanations. Equip yourself for success!

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Which protocol operates on TCP port 443?

HTTP
HTTPS
FTP
SMTP

The correct answer is: HTTPS

The correct answer is HTTPS, which stands for Hypertext Transfer Protocol Secure. This protocol is an extension of HTTP and is used for secure communication over a computer network, particularly the Internet. HTTPS encrypts data between the user's browser and the web server using protocols such as SSL (Secure Sockets Layer) or TLS (Transport Layer Security). The use of port 443 specifically facilitates this secure connection, allowing users to access websites securely, protecting sensitive information such as credit card numbers, login credentials, and personal data. While HTTP operates on port 80 for unencrypted web traffic, FTP (File Transfer Protocol) typically uses ports 20 and 21 for transferring files, and SMTP (Simple Mail Transfer Protocol) uses port 25 to handle email transmission. Each of these protocols serves different purposes and operates on distinct ports, highlighting the specific role that port 443 plays in ensuring secure web communications through HTTPS.