Focus and analytical examination of 642-785 questions

Question: 1
Which Cisco IOS command lists all traffic classifications?
A. show class-map
B. show policy-map
C. show service-policy
D. show qos
Answer: A

Question: 2
Which two statements about IP SLA are correct? (Choose two)
A. Cisco IOS IP SLA is Layer 2 transport independent.
B. IOS IP SLA uses active traffic monitoring which allows users to analyze service levels for
IP applications.
C. IOS IP SLA is a traffic monitoring mechanism that gathers statistics about traffic based on
packet headers and fields.
D. Cisco IOS IP SLA can be used to help detail billing information for each defined class of
service.
E. IP SLA uses NBAR to provide the reporting engine for statistics that it collects
Answer: A, C

Question: 3
What are two benefits of the DiffServ model? (Choose two)
A. Its class-based mechanisms are simple and scale well
B. It provides absolute guarantees of service quality
C. Service quality can be tailored to the needs of many different type of traffic
D. It does not require setting up an end-to-end signaling mechanism
Answer: A, D

Question: 4
When troubleshooting a QQSproblem, which two key statistics should you look for?
A. queue utilization
B. interface utilization
C. queue priority
D. queue drops
E. queue depth
Answer: B, D