Learning How to Create Behavior Models - Answers to Questions - Answers to the Chapter 5 Review Questions -
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Answers to the Chapter 5 Review Questions

Following are the answers to the Review Questions on page 65:

1. What are the similarities and differences between polls and masks?

   A trap mask is similar to a poll in its ability to trigger one or more alarms. Whereas a poll actively monitors conditions, the mask passively waits until it receives a relevant trap to act.

2. What is the difference between a generic and an enterprise-specific trap number?

   The first six generic trap numbers are SNMP-defined traps. Enterprise-specific trap numbers are vendor-defined numbers identifying particular conditions.

3. Why is it often necessary to use trapgen when testing a mask?

   If a mask needs testing, the trap it is masking will need to be generated. However, SNMP traps are unsolicited and sent in response to specific conditions on a network. Therefore, trapgen allows you to simulate a specific trap being sent.