What are two examples of the cut-through switching method? (Choose two.)

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BlackTom AI · Accepted Answer

Let's examine each option in turn to understand whether it represents a cut-through switching method.
Option a: fast-forward switching. This is a classic example of cut-through switching where the switch begins forwarding a frame as soon as the destination MAC address is read, without waiting for the entire frame to be received. This minimizes latency, which is a hallmark of cut-through methods.
Option b: Fragment-free switching. This is another recognized cut-through variation. In fragment-free, the switch waits for the first 64 bytes of the frame to be received to ensure that the frame is not a runt or a collision, then starts forwarding. It sits between pure cut-through and store-and-forward in terms of error checking, but it is still considered cut-through.
Option c: store-and-forward switching. This method receives the entire frame before forwarding, verifies the CRC, and only then forwards. This is not cut-through; it is the opposite approach.
Option d: CRC switching. This term does not correspond to a standard switching method. CRC handling is part of error checking in various methods, but there is no recognized switching mode called CRC switching.
Option e: QOS switching. Quality of Service (QOS) pertains to prioritization and traffic handling, not to the basic forward/receive strategy of the switch. It is not a cut-through switching method.
In summary, options a and b describe cut-through switching techniques, whereas options c, d, and e do not align with cut-through switching definitions and are not characteristic examples of that method.

CET-1022-001 - 11727 - 202501 Mid-term Exam

What are two examples of the cut-through switching method? (Choose two.)

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