physical layer 4.1.3 & 4.2.7 CYU

Which media uses electrical pulses to represent bits?

• electricity

• fiber optic

• wireless

• copper

The physical layer of the receiving device passes bits up to which higher level layer?

• application

• data link

• network

• presentation

Which media uses patterns of light to represent bits?

• copper

• wireless

• fiber optic

• ethernet

Which media uses patterns of microwaves to represent bits?

• wireless

• fiber optic

• copper

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

• true

• false

What is the primary role of the physical layer in transmitting data on the network?

• control data access to the media

• determine the path packets take through the network

• provide physical addressing to the devices

• create the signals that represent the bits in each frame on to the media

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

• true

• false

What PDU is received by the physical layer for encoding and transmission?

• segment

• frame

• packet

• OSI layer

Which of these is the name for the capacity of a medium to carry data?

• latency

• badput

• bandwidth

• throughput

Which of these is a measure of the transfer of bits across the media?

• latency

• bandwidth

• throughput

• goodput