Sim-Ex™ Practice Exams for CCNP Support ( CIT 642-831):Practice questions

Token Ring Errors

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Q5. In a Token Ring network, which of the following is shown as a Non-Isolating soft error?

A. Burst error

B. Frequency error

C. Cable cut

D. Line error

Correct Answer: B


There are two types of soft errors that are tracked by Token Ring networks:
1. Isolating faults - Isolating faults are limited to a particular fault domain. The fault domain is usually a node and its NAUN. Examples of isolating errors are: Line errors, burst errors, and internal errors.
2. Non Isolating faults- Non isolating faults are not limited to a particular fault domain. The error is likely to be spread all over the ring, like congestion. Examples of non isolating faults are: Lost frame, Token, Frequency, and congestion errors.

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