Cisco Certified Network Associate (CCNA) Practice Exam

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Study for the Cisco Certified Network Associate (CCNA) exam with our comprehensive quiz featuring multiple-choice questions and detailed explanations. Prepare effectively and enhance your understanding of networking concepts!

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What is the port number used by Secure Socket Layer (SSL)?

80
443
8080
21

The correct answer is: 443

The port number used by Secure Socket Layer (SSL) is indeed 443. SSL is primarily used to secure communications over a computer network and is commonly associated with HTTPS (HTTP Secure), which operates over port 443. This port allows secure transmission of data, such as credit card information or personal data, encrypted to protect it from eavesdropping. Port 80 is traditionally used for unencrypted HTTP traffic, while port 21 is utilized for FTP (File Transfer Protocol). Port 8080 serves as an alternate port for HTTP traffic, often used in web development and testing scenarios, but it does not apply to SSL. Understanding these port assignments is crucial for network configuration and security, especially when dealing with encrypted communications.