650-325 SP Video Phase II Cable Access

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Question 1

In an HFC network, where does 75-95% of 75-95 ingress originate?

  • A. In the RF Feeder System
  • B. In the RF Distribution system
  • C. In the optical links
  • D. In the Subscribers homes


Answer : B

Question 2

In general, which technique is less expensive when automatic protection switching to
improve reliability in an optical link between a head end and hub?

  • A. Wavelength switching under ROSA control
  • B. RF switching
  • C. Optical switching
  • D. Patch panel


Answer : C

Question 3

What wavelength of optical signals can be amplified?

  • A. 1310 nm
  • B. 1550 nm
  • C. 200 nm
  • D. 850 nm


Answer : B

Question 4

What is the approximate attenuation of single-mode optical fiber at a wavelength of
1310nm?

  • A. 0.35 db per km
  • B. 2.00 db per km
  • C. 0.25 db per km
  • D. 3.00 db per km


Answer : A

Question 5

What is the most appropriate optical technology to transport groups of Narrowcast traffic
from a Head end to a Hub when the number of available fibers is limited?

  • A. DWDM
  • B. 1310nm transmission
  • C. CWDM
  • D. 0-band multiplexing


Answer : A

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