Purpose of the Physical Layer

Question 1

True or false? The physical layer is only concerned with wired network connections.

Answer 1

False

Question 2

True or false? When a frame is encoded by the physical layer, all bits are sent over the media at the same time.

Answer 2

False

Question 3

The physical layer of the receiving device passes bits up to which higher level layer?
 Application
Presentation
Network
Data Link

Answer 3

Data link

Question 4

What PDU is received by the physical layer for encoding and transmission?
.Frame
.Segment
.Packet

Answer 4

Frame