Apache Kafka Practice Exam 2025 – The Complete All-in-One Guide for Exam Success!

SSL (Secure Sockets Layer) is the correct answer as it is specifically designed to provide secure communication over a computer network, including encrypting the data being transmitted. In the context of Kafka, SSL is used to create encrypted connections between clients and brokers, ensuring that the data exchanged remains confidential and secure from eavesdropping or tampering.

SASL (Simple Authentication and Security Layer) is primarily an authentication framework but does not inherently provide encryption of the data in transit. While it can be used in conjunction with other methods that offer encryption, SASL itself does not encrypt data.

JWT (JSON Web Token) is a mechanism for securely transmitting information as a JSON object, often used for authentication and information exchange, but it is not a data encryption method suited to encrypting data streams in Kafka.

OAuth is an open standard for access delegation, commonly used for authorizing third-party applications to access user data without sharing passwords. While it is crucial for managing permissions, it does not provide encryption for data transmission.

Thus, SSL remains the fundamental mechanism used in Kafka for encrypting data, ensuring secure and private communication across its distributed architecture.