Ch 4

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An administrator measured the transfer of usable data across a 100 Mb/s physical channel over a given period of time and obtained 60 Mb/s. Which kind of measurement did the administrator obtain?


Refer to the exhibit. One end of the cable is terminated as displayed, and the other end is terminated in accordance with the T568A standard. What type of cable would be created in this manner?

stright through

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.​

Which two statements are true of the deterministic access method?

The throughput is predictable. Devices take turns transmitting.

Match each type of frame field to its function. (Not all options are used.)

error detection


frame start

addressing – Field helps to direct the frame to desti error detec- the field checks if the frame been damaged type- field is used by LLC frame start – is the field that identify the beginning of the frame

What is the purpose of the physical link control field in a data link layer header?

to establish the media link

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

to identify which network layer protocol is being used

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

They vary depending on protocols.

When is a wired connection preferred to a wireless connection by an end-user device?

when the end-user device will run an application that requires a dedicated connection to the network

What is the correct color order of wire when terminating a cable by the T568B standard? Match the correct RJ-45 pin order to the wire color. (Not all options are used.)

1 – w/o 2-o 3-w/g 4-bl 5-w/bl 6-g 7-w/bw 8- bw

Fill in the blank.
In fiber optic media, the signals are represented as patterns of ________


Which two factors influence the method that is used for media access control

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

Which two engineering organizations define open standards and protocols that apply to the data link layer? (Choose two.)

International Organization for Standardization (ISO) International Telecommunication Union (ITU)

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