644-344 SP Video Phase III Wireline

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Question 1

High RF signal levels at the outputs of amplifiers are desirable because: (choose 2)

  • A. More subscribesrs can be reached' by each amplifier Amplifier
  • B. Amplifier performance is optimal at higher RF signal levels
  • C. The number of RF amplifiers in a node Serving Area yaU be kept to a minimum
  • D. Power consumption is reduced in each amplifier


Answer : A,C

Question 2

In standard engineering practice, how is narrowcast traffic earned when transported from a
main headend to the nodes?

  • A. Separate fibers. with one fiber dedicated to each narrowcast transmission I
  • B. The same fiber as the broadcast traffic
  • C. A single fiber separate from the broadcast traffic using O-band multiplexing
  • D. A single fiber separate from the broadcast traffic using DWDM, with each wavelength carrying the narrowcast traffic


Answer : D

Question 3

What are two of the limitations with 1310nm transmission? (Choose two.)

  • A. Fiber losses are greater at 1310nm than 155Qnm
  • B. DWDM is not possible at 1310 nm
  • C. Chromatic dispersion is a senous problem at a wavelength of 1310 nm
  • D. 131 Onm transmitters cannot accommodate a full (54MHz to 1GHz) band of traffic


Answer : A,B

Question 4

What is the target optical input level to a Cisco node?

  • A. -17dBm
  • B. 0 dBm
  • C. +3dBm
  • D. +17dBm


Answer : B

Question 5

Which three of the following are examples of narrow cast traffic? (Choose three.)

  • A. Video-orv Demand (VoD) signals
  • B. Voice over IP (VoIP) signals
  • C. High-speed data for Internet access
  • D. National video channels E. Radio channels


Answer : A,B,C

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