At which heirarchical layer are switches normally not required to process all ports at wire speed?

Question

core layer

distribution layer

access layer

entry layer

Answer 1

switches, for the most part, forward frames at layer two of the ISO model.  I don't really get the question.

Answer 2

The answer is access layer.

Access layer switches typically do not need to operate at full wire speed because they are physically limited by their uplinks to the distribution layer.