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Exam : Nortel 920-569
Title : NNCDS-Optera Metro Solutions
Version : Demo


1. What do long haul networks use to traverse long distances without regeneration?
A. Q adapters coupled with optical amplifiers
B. high power transmitters coupled with OSC receivers
C. 3R amplification tables coupled with long reach lasers
D. dispersion compensation modules coupled with Raman amplifiers
Answer: D

2. Your customer is deploying an optical network in the continental United States. The customer requires a SONET ring topology. The 4 add/drop sites (clockwise, starting from the north) are: Site 1: North City Site 2: East City Site 3: South City Site 4: West City Each of these add/drop sites can either be externally timed, internally timed or tributary/line timed. The customer requires that external synchronization sources be located in East City and West City. What is the most robust priority order of synchronization sources for the specified major add/drop site?
A. North City: internal timing source, line timed from East City, line timed from West City
B. North City: line timed from West City, internal timing source, line timed from East City
C. South City: line timed from East City, line timed from West City, internal timing source
D. South City: internal timing source, line timed from West City, line timed from East City
Answer: C

3. Given the following: 0.5 dB connector loss 0.45 dB loss per mile 2 dB customer margin Transmitter power -2.0 dBm Receiver sensitivity -22 dBm Fusion splice loss is 0.04 dB. Dispersion penalty = 0.2dB per 10 miles Passthrough has two connectors. You have a point-to-point optical system that has two connectors on each end, one passthrough, and two splices. What is the maximum span loss that can be sustained?
A. 13.92 dB
B. 14.92 dB
C. 16.92 dB
D. 18.00 dB
E. 20.00 dB
Answer: B

4. What are two advantages that a 4-fiber BLSR has over a 2-fiber BLSR? (Choose two.)
A. more survivable
B. double fiber use
C. lower initial cost
D. double the bandwidth
Answer: AD

5. Your customer is a carrier for an enterprise client who has an IP network running Gigabit Ethernet services. Your customer wants to expand their network offering to include connectivity to three other sites in a metropolitan area, using the same fiber infrastructure. Which two services meet these requirements? (Choose two.)
A. Private line service
B. Optical Ethernet service
C. Channel Extension service
D. Managed Wavelength service
E. DSL-based Internet Access service
Answer: BD