L3 and L2 switches and transparent bridging

smcclenaghan

I think both L3 and L2 switches can do transparent bridging. Am I wrong about that?

I'm asking because of question 1 in "Do I Know This Already?" in Chapter 2 of CCNP Switching 300-115 guide.

Question is:

Which of the following devices performs transparent bridging?
A. Ethernet hub.
B. Layer 2 switch.
C. Layer 3 switch.
D. Router

I think it should be B&C but the book says only B.

But as long as my L3 switch interfaces have 'switchport' set on them, they should do transparent bridging if I want them to.

[Deleted User]

Unless they are saying B because of the routing capabilities that are a part of L3 switches? Just bridging in general is done by Layer 2 switches.