Cisco 350-020 Online Practice Questions and Exam Preparation

Cisco 350-020 Online Questions & Answers

• Question 251:

  The purpose of Administrative Distance, as used by Cisco routers, is:

  A. To choose between routes from different routing protocols when receiving updates for the same network
  B. To identify which routing protocol forwarded the update
  C. To define the distance to the destination used in deciding the best path
  D. To be used only for administrative purposes
  A. To choose between routes from different routing protocols when receiving updates for the same network

• Question 252:

  How far apart can optical amplifiers be spaced if they can amplify a signal 25 dB, and the cable looses 0.25 dB every kilometer?

  A. 10 miles
  B. 25 miles
  C. 60 miles
  D. 80 miles
  E. 100 miles
  C. 60 miles

• Question 253:

  Click the Exhibit button to view the graph.

  

  The graph represents optical signal power versus wavelength measurement from 1550nm to 1560nm. The spectral characteristic in the 1558nm to 1559nm range is commonly known as:

  A. Noise floor
  B. High dispersion region
  C. Passband
  D. Gain band
  E. Attenuation band
  A. Noise floor

• Question 254:

  In SDH the function of the K1-K2 bytes is to:

  A. Specify the level of synchronization of the signal
  B. Provide a 64kbit/s voice channel for communication between multiplexers
  C. Provide multiplexer section error monitoring using bit interleaved parity
  D. Provide automatic protection switching signaling between two MSTEs
  D. Provide automatic protection switching signaling between two MSTEs

• Question 255:

  What is the primary benefit of the "time-to-live" field in the IP header?

  A. To improve buffer utilization
  B. To reduce the impact of routing loops
  C. To allow calculation of round-trip delays
  D. To remind us that all earthly joys are fleeting
  E. To avoid delivery of packets that are no longer useful
  B. To reduce the impact of routing loops

• Question 256:

  What is an active filter?

  A. Prisms
  B. Dielectric thin film interface filter
  C. Diffraction grating
  D. Semi-conductor filter
  E. Bragg Grating
  D. Semi-conductor filter

• Question 257:

  What is the transmission limitation on a single 1550 nm signal, at OC-192 bit-rate, over certified SMF. 28 fiber using no dispersion compensation?

  A. Four-wave mixing
  B. Polarization-mode dispersion
  C. Chromatic dispersion
  D. Attenuation
  C. Chromatic dispersion

• Question 258:

  In SDH, what is the meaning of S-16.1 defining an interface?

  A. S-16forSTM-16, 1 for Short Haul
  B. S for Short Haul, 16forSTM-16,1 for 1-port card
  C. S for Short Haul, 16forSTM-16,1 for 1310 nm
  D. S for Short Haul, 16forSTM-16,1 for 1st port on card
  C. S for Short Haul, 16forSTM-16,1 for 1310 nm

• Question 259:

  What condition is NOT a valid criterion for initiating a BLSR protection switch?

  A. Reception of an AIS (all 1 's) signal
  B. High path bit-error-rate (BER) indicated in the B3 byte
  C. Loss-oF. frame (LOF) alarm
  D. Request for a line switch in the K1 byte
  B. High path bit-error-rate (BER) indicated in the B3 byte

• Question 260:

  Why is an STM-1 2F MS-SPRing not feasible?

  A. An equal amount of working and protect bandwidth is needed per span.
  B. Standards have not yet been defined for STM-1 MS-SPRings.
  C. There is not enough bandwidth in an STM-1 ring to justify MS-SPRing configuration.
  D. DCC bandwidth is not large enough to handle K1/K2 processing.
  E. Switch times would exceed 50ms on an STM-1 MS-SPRing.
  A. An equal amount of working and protect bandwidth is needed per span.