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Testing / Apache JMeter Interview questions

List the protocols JMeter supports for load testing?

JMeter supports a broad range of protocols beyond plain HTTP/HTTPS, including JDBC (databases), JMS (messaging), SOAP and REST web services (built on HTTP), FTP, LDAP, TCP, and mail protocols (SMTP/POP3/IMAP).

Each protocol has its own dedicated sampler type - a JDBC Request sampler for database queries, an FTP Request sampler for file transfers, and so on - configured with the connection details and parameters relevant to that specific protocol.

This breadth is part of why JMeter is used well beyond simple website load testing; teams also use it to load-test database layers, message queues, and backend services directly, not just a web application's front door.

Beyond HTTP/HTTPS, JMeter also supports protocols including:
Each supported protocol has its own:

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