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Cisco 642-642 Exam Syllabus Topics:

Cisco Quality of Service (QoS) Sample Questions:

1. DRAG DROP
Drop

2. A Frame Relay interface has been configured for adaptive shaping with a minimum rate of 15 kbps. The current maximum transmit rate is 56 kbps.
If three FECNs are received over the next 4 seconds, what will be the maximum transmit rate after the last FECN has been received?

A) 15 kbps
B) 37 kbps
C) 7 kbps
D) 28 kbps
E) 56 kbps
F) 10 kbps

3. In an unmanaged CE router implementation, how does the service provider enforce the SLA?

A) by using class-based policing on the CE to PE link to limit the customer's input rate
B) by marking on the CE to PE link and using CBWFQ and CB-WRED on the PE to P link
C) by marking on the CE to PE link and using class-based policing on the PE to P link
D) by using class-based random discard on the CE to PE link to limit the customer's input rate

4. What is the purpose of using multiactions traffic policing?

A) so that conform, exceed, and violate traffic can be marked with different CLPs
B) so that conform traffic from different flows can be marked with different DSCPs
C) so that exceed traffic can be shaped and violate traffic can be policed
D) so that traffic can be policed using two separate rates
E) so that class-based policing can mark at Layer 2 and Layer 3 at the same time

5. What is the purpose of the qos pre-classify command?

A) to enable class-based marking on IPSec crypto maps
B) to enable class-based marking on tunnel interface
C) to enable the IOS to classify the packet based on the original IP header instead of the tunnel IP header
D) to enable the IOS to copy the ToS field from the outer tunnel IP header back into the original IP header
E) to enable the IOS to copy the ToS field from the original IP header to the outer tunnel IP header
F) to enable the IOS to classify the packet based on the outer tunnel IP header instead of the original IP header

Solutions: