IN - Physical Layer

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

• Packet

• Frame

• Data

• Bits

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

• Application

• Presentation

• Network

• Data Link

Which standards organization oversees development of wireless LAN standards?

• IEEE

• TIA

• IANA

• ISO

What is the purpose of the OSI physical layer?

• controlling access to media

• transmitting bits across the local media

• performing error detection on received frames

• exchanging frames between nodes

Which type of UTP cable is used to connect a PC to a switch port?

• rollover

• console

• crossover

• straight-through

What type of cable is used to connect a workstation serial port to a Cisco router console port?

• rollover

• console

• crossover

• straight-through

Why are two strands of fiber used for a single fiber optic connection?

• to allow data travel for longer distances without degrading

• increase the speed at which data travel

• they allow full-duplex connectivity

• prevent crosstalk from causing the interferences

Which of the following fiber-optic cable types is used within a campus network?

• Multimode

• single-node

Which of the following fiber-optic cable types can travel approximately 100 km?

• Multimode

• single-node

What is one advantage of using fiber optic cabling rather than copper cabling?

• it is able to carry data faster than than copper cabling

• it is cheaper than copper cabling

• it is easier to terminate and install

• it is able to install around sharp bends