Comptia Security Plus Mock Test Q111

An achievement in providing worldwide Internet security was the signing of certificates associated with which of the following protocols?

A. TCP/IP
B. SSL
C. SCP
D. SSH

Correct Answer: B
Section: Network Security

Explanation:
SSL (Secure Sockets Layer) is used for establishing an encrypted link between two computers, typically a web server and a browser. SSL is used to enable sensitive information such as login credentials and credit card numbers to be transmitted securely.

Incorrect Answers:
A: TCP/IP (Transmission Control Protocol/Internet Protocol) is a layered suite of protocols used to enable network communications between computers. All communications over the Internet between a Web browser and a Web server use TCP/IP. HTTP and SSL run in the Application layer of the TCP/IP protocol suite. TCP/IP itself does not use digitally signed certificates.

C: SCP (Secure Copy) uses SSH (Secure Shell) to copy files between computers using a secure encrypted connection. SSH uses public and private keys in a similar way to SSL to encrypt the connection, however SCP/SSH are not the protocols used to provide the “worldwide Internet security” that this question is asking about.

D: SSH (Secure Shell) is commonly used to log into a remote machine and execute commands over a secure encrypted connection. SSH uses public and private keys in a similar way to SSL to encrypt the connection. However SSH is not the protocol used to provide the “worldwide Internet security” that this question is asking about.

References:
https://www.digicert.com/ssl.htm