Cisco 350-020 Online Practice Questions and Exam Preparation

Cisco 350-020 Online Questions & Answers

• Question 121:

  Why does SNR decrease as the signal progresses through the DWDM system?

  A. Noise is easier to amplify
  B. stimulated emissions cannot be eliminated
  C. Noise increases through each amplification stage
  D. Dispersion adds greater noise
  E. Inherent attenuation properties of fiber
  C. Noise increases through each amplification stage
  E. Inherent attenuation properties of fiber

• Question 122:

  A Fast Ethernet connection supporting multiple VLANs is referred to as:

  A. A circuit group
  B. An emulated LAN (LANE)
  C. A trunk
  D. All of the above
  C. A trunk

• Question 123:

  How many E1 channels can STM-1 frame transport?

  A. 7
  B. 21
  C. 63
  D. 84
  C. 63

• Question 124:

  When you are troubleshooting a POS installation and want to determine who you are physically connected to, which of the following SONET overhead bytes contains that information?

  A. A1 A2 bytes
  B. E1 Section Overhead byte
  C. C2 Path Signal
  D. J1 Path Trace
  E. K1 K2 bytes
  D. J1 Path Trace

• Question 125:

  In R4.1 of the 15454, the ML-series Ethernet cards provide QoS enhancements that allow Service Providers to deliver CIR/PIR (Committed Information Rate/Peak Information Rate) type SLA's. Which two specific QoS mechanisms were added to accomplish this?

  A. Weighted Deficit Round Robin Scheduling (WDRR)
  B. Tri-color policer
  C. Discard Eligible Tail Drop Mechanism
  D. Low Latency Queuing (LLQ)
  B. Tri-color policer
  C. Discard Eligible Tail Drop Mechanism

• Question 126:

  

  For the figure shown, what type of laser is being used? (Note: Measurement taken at launch point.)

  A. 131 Onm Long Reach (LR)
  B. 131 Onm Short Reach (SR)
  C. 151 Onm Long Reach (LR)
  D. 1550nm Long Reach (LR)
  E. 1550nm Short Reach (SR)
  E. 1550nm Short Reach (SR)

• Question 127:

  What is RPF?

  A. Reverse Path Forwarding
  B. Reverse Path Flooding
  C. Router Protocol Filter
  D. Routing Protocol File
  E. None of the above
  A. Reverse Path Forwarding

• Question 128:

  Which three are examples of a non-linear effect? (Choose Three)

  A. SelF. phase modulation
  B. Four-wave mixing
  C. Chromatic dispersion
  D. stimulated Brillioun Scattering
  E. Attenuation
  A. SelF. phase modulation
  B. Four-wave mixing
  D. stimulated Brillioun Scattering

• Question 129:

  Click the Exhibit button.

  

  In a customer access ring environment, what type of transport architecture is best suited for creating an OC-12 RPR ring with 4 Cisco 12000 nodes?

  A. It depends upon the traffic flow.
  B. Meshed fiber with DWDM
  C. SONET OC-12 2F. BLSR ring
  D. SONET OC-12 2F. UPSR ring
  E. Hub and spoke fiber with DWDM
  C. SONET OC-12 2F. BLSR ring

• Question 130:

  In the OC-48 signal shown, when is the extinction ratio acceptable?

  A. Always
  B. Never
  C. Only when the BER is 10E-06
  D. Always, unless the BER is 10E-06
  A. Always