Which Burp Suite action best describes Repeater's function?

• A. Automatically scale tests across many endpoints
• B. Capture all network traffic passively
• C. Manually modify and resend individual HTTP requests to observe responses
• D. Validate SSL certificates

Answer: (B)

Repeater is about manual, iterative testing of a single HTTP request. You take a captured request, adjust parts of it—such as headers, parameters, or the body—and resend it to see exactly how the server responds to those changes. This lets you observe how small modifications affect behavior, which is invaluable for validating inputs, debugging, and probing for weaknesses in a precise, controlled way.

Automatic scaling across many endpoints isn’t what Repeater does; that kind of workflow belongs to automated scanners or fuzzing tools. Capturing all network traffic passively is the job of the proxy component that intercepts and records traffic, not the single-request manipulation Repeater provides. Validating SSL certificates is a TLS/security concern unrelated to the manual request replay function.