QUESTION 32 ACDs are non-blocking PBX switches that are typically used by organi

Question

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 M’ary 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

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

Explanation / Answer

Solutions

32. True

ACD’s are Automatic Call Distributor that answers the call and distributes the incoming call by the organization such as Call centers to the receiver.

33. The correct answer is : (a)

DTE and DCE describes the type of equipment (e.g., network or terminal), and does not address the direction of data flow

Example of DTE ( data terminating equipment ) :   Terminals, computers, laptops, routers, bridges etc.

Example of DCE ( data circuit terminating equipment ) :   Modem, Switch etc.

34. True

Simple DTE to DTE cross-over cables can be used to connect two DTE interfaces together. In order to do that transmit pin of one device should be connected to receiver pin of other device and vice versa.

35. The correct answer is : (d)

All of the above

QAM is a type of M-ary signaling.

·         The different waveforms numbers used in QAM depends on the modem and may vary with the quality of the channel. 16,384-QAM is possible in ADSL modems.

·         By adopting dynamic rate adjustable modems that automatically react to changing signal conditions

·         Use OFDM to divide the operating spectrum into overlapping subcarriers

·         ADSL line modems will synchronize at a line speed at a varying bitrate as ADSL is generally offered at downstream data rates from 512 Kbps to about 6 Mbps.

36. True

·         Crosstalk noise occurs when signals are coupled between adjacent pins in connectors.

·         Near-End Crosstalk (NEXT) is the crosstalk when crosstalk is detected at the same end. Due to same end, noise will be more.

·         Far-End Crosstalk (FEXT) is that crosstalk is detected at the opposite end of the cable where the signal was sent. Hence, it has low amount of noise.

·         Hence, FEXT has very small noise compared to NEXT.

37. True

·     CATV Equipment manufacturers use the DOCSIS.

·     It is important effort that eventually led to the standardization of the CATV industry.

·     DOCSIS addressed the need to standardize the manufacture of CATV equipment

·     DOCS Interface Specification has a capability of the international telecommunications

38. True

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

·     It is implemented using the MMF power than single-mode ones.

·     A passive optical network (PON) major application is in telecommunications technology.

39. True

·         PON systems use the active repeaters and optical amplifiers.

·         These helps in achieving the high capacity bit rates as subscriber’s demand.

40. False

·         802.16d WiMax BWA does not affect the market share of cellular LTE.

·         Cellular LTE can be used in any network either it is 3G or 4G.

Related Questions

Navigate

• Browse (All)
• Browse Q
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.