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642-845 PDF DEMO:
QUESTION NO: 1
Which two statements are true about the various methods of implementing QoS? (Choose two.)
A. Cisco AutoQoS can be used repeatedly to apply a single QoS policy to multiple interfaces.
B. Cisco AutoQoS includes an optional web-based GUI for automating the configuration of QoS services.
C. Cisco AutoQoS provides capabilities to automate VoIP deployments.
D. The auto qos global configuration command is used to configure Cisco AutoQoS.
E. The Modular QoS CLI (MQC) is the best way to fine tune QoS configurations.
F. The SDM QoS wizard is the fastest way to implement QoS.
Answer: CE
QUESTION NO: 2
Which two statements are true about analog to digital conversion of voice signals for use in digital telephony networks? (Choose two.)
A. The three required steps in the analog to digital conversion are sampling, encoding, and compression.
B. The three required steps in the analog to digital conversion are sampling, quantization, and compression.
C. The three required steps in the analog to digital conversion are sampling, quantization, and encoding.
D. The output of the sampling process is a pulse code modulation (PCM) signal.
E. The output of the sampling process is a pulse amplitude modulation (PAM) signal.
Answer: CE
QUESTION NO: 3
Which two statements about the DiffServ QoS model are true? (Choose two.)
A. DiffServ requires RSVP to set up a path through the network to accommodate the requested QoS.
B. Network traffic is identified by class, and the level of service is chosen for each class.
C. The DiffServ model relies on a fairly simple mechanism to provide QoS over a wide range of equipment.
D. RSVP enables the DiffServ model to provide end-to-end QoS.
E. The DiffServ model is more scalable than the IntServ model.
F. The flow-based approach of the DiffServ model is ideal for large scalable implementations such as the public Internet.
Answer: BE
QUESTION NO: 4
What form of AutoQoS is supported on Cisco Catalyst 2950 switches with the Enhanced Image?
A. AutoQos Enterprise
B. AutoQoS Campus
C. AutoQoS VoIP
D. AutoQoS LAN
Answer: C
QUESTION NO: 5
Interface congestion is causing drops in voice packets and TCP packets. The drops result in jerky speech quality and slower FTP traffic flows. Which two technologies would proactively address the TCP transfer rate and the voice problems? (Choose two.)
A. CBWFQ
B. LLQ
C. traffic shaping
D. WRED
Answer: BD
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Updated: May 27, 2022