QUESTION 32

ACDs are non-blocking PBX switches that are typically used by organizations such as call centers.

True

False

10 points

QUESTION 33

Select the correct statement regarding DTE and DCE

		a. DTE and DCE describes the type of equipment (e.g., network or terminal), and does not address the direction of data flow
		b. The concept of DTE and DCE is only relevant to UTP such as Cat5e
		c. DTE and DCE describes the direction of data flow at an interface. Both a DCE and DTE interface can reside on a single device such as a routing switch.
		d. None of the above are correct

10 points

QUESTION 34

Simple DTE to DTE cross-over cables can be used to connect two DTE interfaces together.

True

False

10 points

QUESTION 35

How does ADSL increase network access capacity bit rate?

		a. By using OFDM to divide the operating spectrum into overlapping subcarriers
		b. By implementing Mary modulation (e.g., QAM)
		c. By adopting dynamic rate adjustable modems that automatically react to changing signal conditions
		d. All of the above

10 points

QUESTION 36

NEXT describes noise caused by crosstalk. It is a more severe problem than FEXT.

True

False

10 points

QUESTION 37

DOCSIS addressed the need to standardize the manufacture of CATV equipment. This was an important effort that eventually led to the standardization of the CATV industry.

True

False

10 points

QUESTION 38

PON systems can only be implemented on high capacity MMF cables.

True

False

10 points

QUESTION 39

PON systems require the use of active repeaters and optical amplifiers in order to achieve the high capacity bit rates demanded by subscribers.

True

False

points

QUESTION 40

802.16d WiMAX BWA is a 4G mobile cellular standard that has lost market share to cellular LTE.

True

False