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| Section | Objectives |
|---|---|
| Topic 1: QoS Mechanisms in MPLS Networks | - RFC 3270 Uniform and Pipe modes - EXP and DSCP mapping |
| Topic 2: Congestion Management and Avoidance | - WRED configuration and behavior - WFQ, CBWFQ and Priority Queuing |
| Topic 3: Monitoring and Troubleshooting QoS | - IP SLA and performance measurement - QoS statistics and verification |
| Topic 4: Service Provider QoS Implementation | - Policy maps and class maps - Implementing QoS on Cisco IOS routers |
| Topic 5: Quality of Service Fundamentals | - Service Provider QoS models and design - Traffic classification and marking |
1. What are the three primary types of faults associated with QoS fault management? (Choose three.)
A) assurance faults
B) queue faults
C) marking faults
D) classification faults
E) buffer faults
F) physical faults
2. DRAG DROP
Drag and drop mechanisms on the left to their corresponding uses on the right. Some mechanisms may not used.
3. Which two tools can be used to monitor and report on if a QoS queue is working on a network device? (Choose two.)
A) InfoVista
B) CiscoWorks IPM
C) Remedy
D) IP SLA
E) NetCool
F) Splunk
4. Where would a service provider apply this policy?
interface Gi1/1 service-policy output SP-POLICY
policy-map SP-POLICY class CLASS-REALTIME priority set cos 5 ! class CLASS-HIPRIORITY bandwidth remaining percent 75 set cos 3 ! class CLASS-BASIC bandwidth remaining percent 20 set cos 1 !
class class-default set cos 1 ! end-policy-map
class-map match-any CLASS-BASIC match dscp af11 af12 af13 end-class-map ! class-map match-any CLASS-REALTIME match dscp ef af42 af43 end-class-map ! class-map match-any CLASS-HIPRIORITY match dscp af21 af22 end-class-map !
A) CE interface toward PE
B) PE interface toward P
C) PE interface toward CE
D) P interface toward PE
5. What problem could occur when applying this policy map on CE?
policy-map CE-SP-MODEL class VOIP priority class BROADCAST-VIDEO priority class SP-CRITICAL-DATA bandwidth percent 40 random-detect exp 3 15000 packets 45000 packets class class-default random-detect exp 1 2500 packets 7500 packets random-detect exp 0 1500 packets 10500 packets
A) No bandwidth or policing is configured for voice and video traffic, and other traffic could be impacted.
B) Default class does not have bandwidth assigned.
C) All traffic is classified and treated properly, no issues occur.
D) Only one priority queue is allowed per policy.
Solutions:
| Question # 1 Answer: A,C,D | Question # 2 Answer: Only visible for members | Question # 3 Answer: A,B | Question # 4 Answer: C | Question # 5 Answer: A |
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