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Cisco Quality of Service (QoS) Sample Questions:
1. DRAG DROP
Drop
2. Refer to the exhibit. Which three statements are true about the configuration? (Choose three.)
class-map class-1
match ip rtp 2024 1000
class-map class 2
match dscp 5 6 7
policy-map access-group-1-traffic
class class-1
shape peak 16000
class class-2
police 8000 1000
conform-action set-dscp-transmit 1
exceed-action set-dscp-transmit 0
violate-action drop
class class-default
fair-queue 16
queue-limit 20
interface fastethernet 0/0
service-policy output access-group1-traffic
A) IP traffic (DSCPs 1, 2, 3, and 4) that is sent on fastethernet 0/0 are considered to have a violate status and are dropped.
B) IP traffic (DSCPs 5, 6, and 7) that is sent on fastethernet 0/0 will be traffic policed.
C) RTP traffic (ports 2024 and 1000) that is sent on fastethernet 0/0 will be traffic shaped.
D) Traffic that is subject to policing will have the DCSP set to 0 if the rate exceeds 1000 bps.
E) IP traffic (DSCP 0) that is sent on fastethernet 0/0 will be subject to fair queuing.
F) Traffic that is subject to shaping can burst up to 32,000 bps.
3. What are three reasons link efficiency mechanisms are deployed on WAN links? (Choose three.)
A) increase link speed
B) increase throughput
C) decrease delay
D) decrease propagation delay
E) decrease jitter
4. According to the best practices, which statement is true as related to the QoS policy that should be implemented on the outbound provider (P) to provider (P) router link in a service provider network that is supporting both VoIP and data?
A) In the DiffServ model, ingress and egress QoS mechanisms are only required on the provider edge (PE) routers, so no QoS policy is needed on the P to P link.
B) CBWFQ and CB-WRED should be implemented on the P router egress to provide a maximum bandwidth guarantee for the VoIP traffic.
C) CBWFQ and CB-RTP header compression should be implemented on the P router egress to ensure minimum latency for VoIP traffic.
D) LLQ and CB-WRED should be implemented on the P router egress to support both VoIP and data traffic.
5. DRAG DROP
Solutions:
| Question # 1 Answer: Only visible for members | Question # 2 Answer: B,E,F | Question # 3 Answer: B,C,E | Question # 4 Answer: D | Question # 5 Answer: Only visible for members |
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