Automotive Service Excellence (ASE) Brakes Certification Practice Exam

The components that comprise a hydraulic brake system include the master cylinder, brake lines, brake calipers, and brake pads, which is why the correct answer is the third option.

The master cylinder is crucial as it converts the force applied by the driver on the brake pedal into hydraulic pressure. This pressure is then transmitted through brake lines to the brake calipers. The brake calipers house the brake pads and press them against the rotors when activated, creating the friction needed to slow down or stop the vehicle.

In hydraulic brake systems, the use of brake fluid is also vital, as it is the medium that transfers that hydraulic pressure. The brake pads are essential as they provide the actual contact surface for creating friction against the rotors. Together, these components function cohesively to ensure effective and reliable braking performance.

The inclusion of all these key components—the master cylinder, brake lines, brake calipers, and brake pads—provides a complete picture of how hydraulic brakes operate, which is why this answer accurately defines the system.