Chapter 4

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Which Statement best describes a characteristic of the frame header fields of the data link layer?

They Vary depending on protocols.

What method is used to manage contention-based access on a wireless network?

CSMA/CA

What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)

Greater distances per cable run Limited susceptibility to EMI/RFI Greater Bandwidth potential

Which two factors influence the method that is used for MAC?

How the connection between nodes appears to the data link layer How nodes share the media

Which statement correctly describes frame encoding?

It converts bits into a predefined code in order to provide a predictable pattern to help distinguish data bits from control bits.

In fiber optic media, the signals are represented as patterns of ________?

Light

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

Rollover

What is a characteristic of a WAN hub-and-spoke topology?

The branch sites are connected to a central site through point-to-point links.​

A network administrator is designing a new network infrastructure that includes both wired and wireless connectivity. Under which situation would a wireless connection be recommended?

The end-user device needs mobility when connecting to the network.

Which method of data transfer allows information to be sent and received at the same time?

full duplex

Which is a function of the Logical Link Control (LLC) sublayer?

to identify which network layer protocol is being used

What is the purpose of the OSI physical layer?

transmitting bits across the local media


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