Which one of the following devices operates strictly at the physical layer?

Posted by: Pdfprep Category: 210-250 Tags: CCNA Cyber Ops, 210-250 exam questions, 210-250 practice exam Post Date: December 15, 2020

Which one of the following devices operates strictly at the physical layer?
A . switches
B . hubs
C . routers
D . bridges

Answer: B