Cisco 350-801 Practice Test - Questions Answers, Page 33
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What is a description of the DiffServ model used for implementing QoS?
AF41 has higher drop precedence than AF42. which has higher drop precedence than AF43.
Voice and video calls are marked with different DSCP values and placed in different queues.
AF43 has higher drop precedence than AF42 but lower drop precedence than AF41.
RTP traffic from voice and video calls is marked EF and placed in the same queue.
An administrator is developing an 8-class QoS baseline model. The CS3 standards-based marking recommendation is used for which type of class?
Scavenger
best effort
voice
call signaling
Which DiffServe PHB preserves backward compatibility with any IP precedence scheme?
expedited forwarding
class selector
assured forwarding
default
Which behavior occurs when Cisco UCM has a Call Manager group that consists of two subscribers?
Endpoints attempt to register with the top subscriber in the list.
Endpoints attempt to register with (he bottom subscriber in the list.
Endpoints attempt to register with both subscribers in a load-balanced method.
If a subscriber is rebooted, endpoints deregister until the rebooted system is back in service.
Refer to the exhibit.
Refer to the exhibit. An administrator configured a codec preference list with 0,122 and ILBC codecs.
Which change must the administrator make in the dial-peer section of the configuration to use this list?
add voice-codecs 20
add session codec 20
add codec preference 20
add voice-class codec 20
According to QoS guidelines, what is the packet loss for streaming video?
Not more than 8%
Not more than 1%
Not more than 3%
Not more than 5%
Which IP Precedence value is used to classify a call signalling packet?
6
5
4
3
Which DSCP value and PHB equivalent are the default for audio calls?
48 and EF
34 and AF41
32 and AF41
32 and CS4
Which two technical reasons make QoS a necessity in a video deployment? (Choose Two)
Low response time between endpoints
Provisioned bandwidth of the link
Variable bit rate of the video stream
Bursly behavior of video traffic
A remote office has a less-than-optimal WAN connection and experiences packet loss, delay and jitter. Which VoIP codec is used in this situation?
G722.1
iLBC
G.711alaw
G.729A
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