642-642 무료 덤프문제 온라인 액세스

What describes the use of best-effort service with overprovisioning?

• A.ensuring availability and quality of service by always provisioning key services across at least two service provider networks
• B.ensuring quality of service by providing more than the aggregate bandwidth required
• C.ensuring constant availability by provisioning multiple paths through the network
• D.ensuring quality of service by deploying sophisticated prioritization and congestion management mechanisms
• E.ensuring quality of service by being able to load balance across links in times of congestion

What are three reasons link efficiency mechanisms are deployed on WAN links? (Choose three.)

• A.decrease propagation delay
• B.increase link speed
• C.increase throughput
• D.decrease delay
• E.decrease jitter

Based on the following Cisco Catalyst 2950 Series switch configurations, which additional command will enable these actions?
Traffic marked with a CoS of 6 or 7 will be serviced by the priority queue.
Traffic marked with a CoS of 0, 1, or 2 will have a 20-percent weight when serviced by the wrr queue.
Traffic marked with a CoS of 4 will have a 30-percent weight when serviced by the wrr queue.
Traffic marked with a CoS of 3 or 5 will have a 50-percent weight when serviced by the wrr queue.
Catalyst 2950 partial configuration:
no wrr-queue cos-map
wrr-queue cos-map 1 0 1 2
wrr-queue cos-map 2 4
wrr-queue cos-map 3 3 5
wrr-queue cos-map 4 6 7

• A.wrr-queue bandwidth 10 15 25 0
• B.wrr-queue bandwidth 15 25 10 1
• C.wrr-queue bandwidth 1 20 30 50
• D.wrr-queue bandwidth 15 25 10 0
• E.wrr-queue bandwidth 1 10 15 25

Which algorithm (discard method) does WRED use to determine which packets will be dropped when the average queue length becomes larger than the user-specified maximum threshold?

• A.random discard
• B.weighted early discard
• C.packet size based discard
• D.tail discard

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.RTP traffic (ports 2024 and 1000) that is sent on fastethernet 0/0 will be traffic shaped.
• C.Traffic that is subject to shaping can burst up to 32,000 bps.
• D.IP traffic (DSCPs 5, 6, and 7) that is sent on fastethernet 0/0 will be traffic policed.
• E.IP traffic (DSCP 0) that is sent on fastethernet 0/0 will be subject to fair queuing.
• F.Traffic that is subject to policing will have the DCSP set to 0 if the rate exceeds 1000 bps.