SkillTestPro | CCNP Collaboration 300-820 CLHCT Practice Test 11

CCNP Collaboration 300-820 CLHCT Practice Test 11 - Diagnosing Network Issues - Bandwidth and QoS for Webex Suite and Collaboration Endpoints

CCNP Collaboration Exam Questions

1 / 10

Which network prioritization mechanism should be configured end-to-end on the network path to ensure real-time audio and video traffic from Webex collaboration endpoints is not delayed behind less time-sensitive traffic during periods of congestion?

A prioritization mechanism that only affects the power supply brand of endpoints during network congestion

A prioritization mechanism that only affects the rack mounting position of endpoints during network congestion

Quality of Service (QoS), using appropriate DSCP markings and queuing policies applied consistently across the network path to prioritize real-time media traffic

A prioritization mechanism that only affects the chassis LED color of endpoints during network congestion

A prioritization mechanism that only affects the fan speed profile of endpoints during network congestion

A prioritization mechanism that only affects the console banner message of endpoints during network congestion, regardless of the platform version in use, under normal operating conditions

2 / 10

Which network condition, measured as the variation in packet arrival timing, is particularly disruptive to real-time audio and video quality even when overall available bandwidth appears sufficient?

Jitter, which is the variation in packet arrival timing that can disrupt smooth audio/video playback even when average bandwidth is adequate

A condition that only affects the power supply brand of the receiving endpoint

A condition that only affects the chassis LED color of the receiving endpoint

A condition that only affects the rack mounting position of the receiving endpoint

A condition that only affects the console banner message of the receiving endpoint

A condition that only affects the fan speed profile of the receiving endpoint

3 / 10

Which symptom would most likely indicate insufficient bandwidth or missing QoS prioritization for Webex media traffic on a shared internet uplink also carrying bulk data traffic?

Users experience choppy audio, frozen or pixelated video, and dropped calls specifically during periods when bulk data transfers are also using the same shared uplink

Users experience choppy audio and video, but the fan spins at an unexpected speed

Users experience choppy audio and video, but the console banner message displays in the wrong language, in a properly maintained environment, which is rarely the correct choice

Users experience choppy audio and video, but the rack mounting bracket loosens unexpectedly

Users experience choppy audio and video, but the chassis LED blinks at an unexpected rate

Users experience choppy audio and video, but the power supply hums at a different pitch

4 / 10

Which troubleshooting step would be appropriate if a specific branch office reports poor Webex call quality, while other branch offices on the same WAN architecture report no issues?

Assume QoS is a deprecated capability no longer relevant to Webex media quality

Assume the issue is caused by the phase of the moon

Immediately replace the branch's network hardware as the first troubleshooting step

Compare the affected branch's available bandwidth, QoS marking/queuing configuration, and current network utilization against the unaffected branches to identify a site-specific configuration gap or capacity constraint

Assume the issue is unrelated to bandwidth or QoS configuration and only check the office's lighting, which is rarely the correct choice, which is inconsistent with expected behavior, though this is not generally recommended

Assume the issue is caused by the branch's ringtone assignment with no further investigation

5 / 10

Which design benefit does consistently marking and prioritizing Webex media traffic with QoS across the entire network path (LAN, WAN, and internet edge) provide compared to applying QoS only at a single point in the path?

It allows every network segment to automatically share the exact same chassis LED color regardless of QoS configuration

It ensures the traffic prioritization is honored at every potential congestion point along the path, since a single unmarked or unprioritized segment could still introduce delay, jitter, or loss even if the rest of the path is properly configured

It allows every network segment to automatically share the exact same console banner message regardless of QoS configuration

It allows every network segment to automatically share the exact same rack mounting position regardless of QoS configuration

It allows every network segment to automatically share the exact same power supply brand regardless of QoS configuration

It allows every network segment to automatically share the exact same fan speed profile regardless of QoS configuration

6 / 10

Which risk would most likely result from an organization sizing its internet uplink bandwidth based only on the number of concurrent Webex calls expected, without accounting for other concurrent business traffic sharing the same link?

Undersized planning would automatically change the uplink's console banner message to indicate the risk, regardless of the platform version in use, though this is not generally recommended, under typical configuration conditions, under typical configuration conditions, based on standard platform behavior

Undersized planning would automatically change the uplink's fan speed profile to indicate the risk

Undersized planning would automatically change the uplink's rack mounting position to indicate the risk

During periods of high concurrent business traffic (such as large file transfers or cloud backups), the actual bandwidth available for Webex media could be less than planned, causing call quality degradation even though the link was sized to a number that assumed no competing traffic

Undersized planning would automatically change the uplink's power supply brand to indicate the risk

Undersized planning would automatically change the uplink's chassis LED color to indicate the risk

7 / 10

Which combination of network design elements would be necessary to ensure reliable Webex call quality for a branch office sharing its internet uplink with general business data traffic?

Sufficient uplink bandwidth sized to account for concurrent Webex and business traffic, consistent DSCP marking of Webex media applied at the source, and QoS queuing policies configured on the branch's network devices to prioritize the marked media traffic during congestion

Only a change to the uplink's power supply brand with no bandwidth sizing, marking, or QoS queuing configuration at all

Only a change to the uplink's chassis LED color with no bandwidth sizing, marking, or QoS queuing configuration at all

Only a change to the uplink's fan speed setting with no bandwidth sizing, marking, or QoS queuing configuration at all

Only a change to the uplink's rack mounting position with no bandwidth sizing, marking, or QoS queuing configuration at all

Only a change to the uplink's console banner message with no bandwidth sizing, marking, or QoS queuing configuration at all, though this is not generally recommended, though this is not generally recommended, in a properly maintained environment, which is not the standard approach

8 / 10

Which statement accurately explains why both bandwidth capacity and QoS marking/queuing are necessary for reliable Webex call quality, rather than either alone being sufficient?

Sufficient bandwidth capacity addresses whether enough total throughput exists for media traffic under normal conditions, while QoS marking and queuing addresses how that traffic is prioritized relative to other traffic during moments of congestion, so a network with plenty of bandwidth but no QoS can still suffer quality issues during congestion, and a network with QoS but insufficient total bandwidth can still be overwhelmed

QoS marking and queuing alone can fully provide the raw throughput capacity that bandwidth planning is designed for

QoS marking and queuing can only ever be configured when bandwidth capacity has been reduced to its minimum possible value, with no other combination possible, which is not the standard approach, which is rarely the correct choice, which is rarely the correct choice, though this is not generally recommended, which is inconsistent with expected behavior, under normal operating conditions, though this is not generally recommended

Bandwidth capacity and QoS marking/queuing are simply two different names for the exact same identical network requirement

Bandwidth capacity alone can fully provide the traffic prioritization capability that QoS marking and queuing is designed for

Configuring both bandwidth capacity planning and QoS together always causes network congestion to worsen

9 / 10

Which factor would most influence a design team's decision to invest in dedicated bandwidth or a private network path for Webex media traffic rather than relying on QoS over a shared best-effort internet connection?

The color scheme configured for the network path's entry in the administration GUI

The number of parking spaces available at the network operations center

The brand of coffee served in the network operations center

The font used in the network design documentation

The organization's tolerance for the residual risk that best-effort internet paths, even with QoS applied at the organization's own edge, can still experience unpredictable congestion or quality issues outside the organization's direct control on the broader internet path

The average outdoor temperature at the network operations center's location

10 / 10

Which verification approach would best confirm that QoS marking and prioritization for Webex media traffic is actually being honored end-to-end across a branch office's network path, rather than just assuming the configuration is correct?

Capture and inspect the DSCP markings on Webex media packets at multiple points along the network path (endpoint, switch, router, WAN edge) during an active call, and correlate marking preservation with observed call quality under simulated congestion

Only check whether the network devices' console banner message changes during a call with no packet marking or path verification at all

Only check whether the network devices' power supply brand changes during a call with no packet marking or path verification at all

Only check whether the network devices' fan speed changes during a call with no packet marking or path verification at all

Only check whether the network devices' rack mounting position changes during a call with no packet marking or path verification at all

Only check whether the network devices' chassis LED changes color during a call with no packet marking or path verification at all

Your score is

The average score is 0%