Prep and try our 642-785 valid and latest training questions & answers

Cisco 642-785 Exam Overview:

Cisco 642-785 Exam Syllabus Topics:

Cisco Maintaining Cisco Service Provider Quality of Service (MSPQS) Sample Questions:

1. Refer to the exhibit.

You have implemented RFC 3270 Pipe mode in your MPLS network. A customer packet with the DSCP value of AF31 has been sent to the ingress PE router. The PE router has set the MPLS experimental bits per policy, but the policer has remarked the experimental bits of the top label. What will the DSCP value of the packet be when it leaves the egress PE router?

A) CS4
B) CS1
C) CS3
D) BE
E) AF31

2. Which Cisco IOS feature is used to enable the following class map configuration?
class-map match-all test-cm
match protocol gnutella file-transfer "*"

A) NetFlow
B) CBWFQ
C) CAR
D) Flexible Packets Matching
E) NBAR

3. A customer with an unmanaged CE router has reported experiencing poor quality on the video conferencing and broadcast multimedia applications. To address the issue, the provider has implemented shaping on the PE router to "smooth out" speed mismatches in the network. Which of these is a valid concern with this approach?

A) Shaping should only be used in a TCP-based environment where the application can detect the congestion and adjust. Shaping provides little benefit with UDP applications.
B) In addition to shaping, the provider should implement policing so the application can detect the congestion and throttle traffic.
C) Shaping can only be applied to the outbound interface, which does not prevent the customer from flooding the inbound link to the provider.
D) While shaping may help the broadcast multimedia application, it could cause additional delay in the video conferencing application.

4. Which two Cisco IOS commands can be used to monitor QoS on a device? (Choose two.)

A) show policy-map
B) show qos-dbl
C) show class-map
D) show qos-interface
E) show service-policy
F) show qos-maps

5. Which three items are important when monitoring service quality in the SP network? (Choose three.)

A) Collection of data to detect QoS issues is slow and labor-intensive.
B) Establishing alarm thresholds for QoS problems can be complicated.
C) Troubleshooting class map configurations is complex and frequently required.
D) QoS support differs from device to device, depending on underlying hardware platforms and software.
E) QoS issues can be difficult to detect when there is not enough traffic to trigger the configured QoS policy.
F) The typical cause of QoS issues is intermittent failure of network devices and these are inherently difficult to detect.

Solutions: