Ethical Hacking Essentials Practice Test

Which protocol provides cryptographic privacy and authentication for network communication?

1. Simple Network Management Protocol (SNMP)

2. Telnet

3. Secure Sockets Layer (SSL)

4. File Transfer Protocol (FTP)

The correct answer is: Secure Sockets Layer (SSL)

Secure Sockets Layer (SSL) is the correct choice because it is specifically designed to provide cryptographic privacy and authentication for data transmitted over a network. By establishing an encrypted link between the server and client, SSL ensures that any data shared remains confidential and cannot be easily intercepted by malicious entities. Additionally, SSL includes mechanisms for authentication, which help verify the identities of the parties involved in the communication, thus adding a layer of trust. In contrast, the other options do not provide the same level of security. Simple Network Management Protocol (SNMP) is primarily used for network management and monitoring, but it lacks built-in encryption and authentication mechanisms. Telnet is an unencrypted protocol that allows for remote communication; however, it does not safeguard the data transmitted, making it vulnerable to eavesdropping. File Transfer Protocol (FTP) is used for transferring files but also does not incorporate encryption, thus exposing any data sent over the network. These alternatives demonstrate a clear need for secure methods like SSL to protect sensitive information in communication.