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Question 41. What does DCA automatically manage

1. AP passwords
2. Radio channels
3. DHCP pools
4. Controller licenses

Correct Answer: 2. Radio channels

Explanation:

Dynamic Channel Assignment is an important part of Cisco Radio Resource Management. It evaluates the RF environment and selects suitable channels for access point radios. The goal is to reduce interference and improve channel reuse across the wireless deployment. DCA can consider factors such as interference, neighboring access points, channel utilization, and configured channel lists. It can run at scheduled intervals and make changes when the RF environment requires adjustment. Wireless designers should still create a sound RF design because DCA works best when access point placement and channel availability have already been planned correctly.

Question 42. What does TPC automatically adjust

1. Radio transmit power
2. VLAN numbers
3. Client passwords
4. DHCP timers

Correct Answer: 1. Radio transmit power

Explanation:

Transmit Power Control automatically manages access point radio power levels as part of Cisco Radio Resource Management. It helps create appropriate cell sizes while maintaining suitable coverage and limiting unnecessary overlap. Excessive transmit power can increase cochannel contention and encourage clients to remain associated with distant access points. Power that is too low can create coverage gaps. Designers can configure minimum and maximum TPC power levels through RF profiles so automatic power decisions remain aligned with the intended RF design. Cisco generally recommends allowing RRM to manage radio power within appropriate design boundaries.

Question 43. What can Event Driven RRM do after severe interference is detected

1. Change the affected channel quickly
2. Disable all controllers
3. Delete RF profiles
4. Restart every access point

Correct Answer: 1. Change the affected channel quickly

Explanation:

Event Driven RRM allows Cisco wireless infrastructure to react more quickly to severe interference than waiting for the normal scheduled DCA interval. When excessive interference is detected, the system can make an immediate channel change decision for the affected radio. This can improve service when sudden interference appears in the environment. Designers should still use the feature carefully because unstable or noisy environments can cause frequent channel changes, which can negatively affect associated wireless clients. Event Driven RRM should therefore complement a sound RF plan rather than compensate for poor access point placement.

Question 44. What can an RF profile restrict for TPC

1. Controller hostname
2. DHCP lease duration
3. Minimum and maximum radio power
4. Client certificate length

Correct Answer: 3. Minimum and maximum radio power

Explanation:

An RF profile can define minimum and maximum TPC power levels for the access points assigned to that profile. This lets designers limit the range in which automatic transmit power decisions can operate. Different physical areas can therefore use different radio power boundaries. A high density auditorium may require different power limits from a warehouse or general office. RF profiles inherit global RRM behavior but allow selected settings to be adjusted for specific groups of access points. This provides a practical way to align automatic radio management with local wireless design requirements.

Question 45. What does Coverage Hole Detection help identify

1. Areas where clients receive poor RF coverage
2. Missing DNS zones
3. Expired controller licenses
4. Failed switch stacks

Correct Answer: 1. Areas where clients receive poor RF coverage

Explanation:

Coverage Hole Detection helps identify situations where wireless clients experience signal levels below configured thresholds. Cisco RRM can use client measurements to recognize possible coverage problems and support corrective radio power behavior. RF profiles can define data and voice RSSI thresholds and other coverage related values. Designers should treat this feature as a supplement to proper site surveys and post deployment validation. A poorly designed physical deployment cannot always be corrected through automatic power changes alone. Coverage Hole Detection is most effective when access points are already positioned to provide reasonable overlapping coverage throughout the intended service area.

Question 46. Which technology helps detect non WiFi interference on Cisco wireless networks

1. DHCP snooping
2. HSRP
3. CleanAir
4. EtherChannel

Correct Answer: 3. CleanAir

Explanation:

Cisco CleanAir technology provides visibility into RF interference that can affect wireless performance. It can identify and classify certain non WiFi interference sources and provide information that helps wireless systems react to changing spectrum conditions. Interference can come from many devices that share unlicensed spectrum and may not appear as ordinary wireless access points or clients. CleanAir information can therefore complement traditional WiFi scanning and spectrum survey results. Wireless designers should understand the RF environment because reliable coverage depends not only on signal strength but also on the amount and type of interference present in the channel.

Question 47. Why should TPC minimum and maximum values match the RF design

1. To prevent unsuitable automatic power choices
2. To increase DNS responses
3. To change switch routing
4. To create WLAN passwords

Correct Answer: 1. To prevent unsuitable automatic power choices

Explanation:

TPC automatically adjusts access point power, but the allowed minimum and maximum values should reflect the intended RF design. If the permitted range is too broad, access points could use power levels that create oversized cells, excessive overlap, or insufficient coverage. Cisco recommends limiting TPC to suitable values according to the wireless design. RF profiles provide a convenient mechanism for controlling these boundaries in different areas. Automatic radio management is most effective when designers first establish the intended coverage and capacity model and then constrain TPC so its decisions support that model.

Question 48. What is a common reason to use narrower channels in a high density design

1. Increase the number of reusable channels
2. Eliminate authentication
3. Increase wall attenuation
4. Disable roaming

Correct Answer: 1. Increase the number of reusable channels

Explanation:

Narrower channels can provide more independent channels for reuse within a dense wireless deployment. High density areas often contain many access points and clients, so channel reuse and airtime management become more important than maximizing the theoretical speed of one individual connection. Very wide channels consume more spectrum and reduce the number of separate channels available nearby. Designers therefore balance channel width against capacity requirements, client capabilities, and expected interference. Cisco includes channel width controls within RF profile and RRM design because the best width depends on the physical environment and application requirements.

Question 49. Which infrastructure feature helps prevent a high speed AP uplink from being limited to one gigabit

1. Multigigabit Ethernet
2. Static routing
3. DNS caching
4. Port security only

Correct Answer: 1. Multigigabit Ethernet

Explanation:

Cisco Multigigabit Ethernet supports wired access speeds above one gigabit while using existing compatible twisted pair cabling. Modern wireless access points can provide aggregate wireless throughput greater than one gigabit, so a traditional one gigabit switch port can become a bottleneck. Multigigabit switch ports can support higher rates while also delivering Power over Ethernet to the access point. Designers should evaluate expected AP throughput, cable capability, switch port support, and power requirements together. Cisco specifically highlights multigigabit technology as important for modern high performance wireless deployments.

Question 50. Which PoE standard provides up to 30 watts at the power source

1. IEEE 802.3af
2. IEEE 802.3at
3. IEEE 802.11ax
4. IEEE 802.1Q

Correct Answer: 2. IEEE 802.3at

Explanation:

IEEE 802.3at is commonly known as PoE Plus and provides up to 30 watts from the power sourcing equipment. Modern access points can require different power levels depending on their radios, USB devices, Ethernet ports, and supported features. If an AP receives less than the power required for full operation, it can enter a reduced functionality state where radios or other capabilities are limited. Wireless designers must therefore verify both the access point power requirement and the available switch power budget before finalizing deployment quantities and switch selection.

Question 51. What can happen when a Cisco AP receives less PoE power than required

1. It always increases transmit power
2. It can operate with reduced functionality
3. It becomes a wireless controller
4. It disables Ethernet permanently

Correct Answer: 2. It can operate with reduced functionality

Explanation:

A Cisco access point that does not receive its required power can operate in a reduced power state. Depending on the AP model and available PoE level, some radios may operate with fewer spatial streams, USB functionality can be disabled, Ethernet speed can be limited, or certain radios can be shut down. This is why power design is a core part of wireless infrastructure planning. Designers must verify the exact requirements of the selected AP model and make sure the access switch and its total PoE budget can support every planned access point at full functionality.

Question 52. Which PoE technology can provide up to 90 watts at the power source

1. PoE
2. PoE Plus
3. UPoE Plus
4. Fast Ethernet

Correct Answer: 3. UPoE Plus

Explanation:

Cisco documentation identifies UPoE Plus, also associated with IEEE 802.3bt, as supporting up to 90 watts from the power source. Higher power delivery is important for newer access points that contain several radios, advanced antenna systems, USB ports, and high speed Ethernet interfaces. Providing sufficient power allows the AP to operate with its full supported feature set. Wireless infrastructure design must therefore include more than simple port count. Designers should verify the PoE standard supported by the switch, total switch power budget, access point requirements, and any additional powered features before deployment.

Question 53. Why is accurate AP placement on a floor map important for location services

1. Location calculations depend on AP reference positions
2. It increases DHCP scope size
3. It changes VLAN IDs
4. It disables interference

Correct Answer: 1. Location calculations depend on AP reference positions

Explanation:

Wireless location systems use known access point positions as reference points when estimating the location of clients, tags, and other devices. If the AP positions shown on the floor map are inaccurate, the resulting location estimates can also be inaccurate. Cisco Spaces and earlier CMX designs therefore depend on accurate floor maps and access point placement. Cisco Auto Location features can help calculate AP positions, but manual review and correction can still be necessary. Accurate AP placement supports downstream functions such as asset tracking, analytics, and location based operational workflows.

Question 54. Which technology can Cisco Spaces use to calculate distances between access points

1. FTM ranging
2. DHCP relay
3. OSPF
4. CAPWAP only

Correct Answer: 1. FTM ranging

Explanation:

Cisco Spaces AP Auto Location can use Fine Timing Measurement ranging to estimate distances between supported access points. It combines these measurements with other available positioning information such as GNSS and manually placed anchors to calculate AP positions. APs must be able to hear suitable neighboring APs for ranging to work effectively. Physical isolation and poor line of sight can reduce the available measurements and affect placement accuracy. Designers should understand these dependencies because the quality of access point location information affects later location services for wireless clients and tracked devices.

Question 55. What is recommended when GNSS is unavailable for Cisco Spaces AP Auto Location

1. Use manual anchor APs
2. Disable all location functions
3. Use only one AP per floor
4. Remove the floor map

Correct Answer: 1. Use manual anchor APs

Explanation:

When GNSS information is not available, Cisco Spaces AP Auto Location can use manually placed anchor access points as reference positions. Cisco guidance recommends having several anchor APs with known locations so the system can calculate the relative positions of the remaining APs. FTM ranging and AP to AP measurements then help build the placement model. Manual anchor placement is especially important indoors where satellite signals may be weak or unavailable. Administrators should review the automatically calculated AP positions before publishing them because accurate reference positions directly affect location and asset tracking quality.

Question 56. What is a convex hull in wireless location design

1. The area enclosed by surrounding access points
2. A controller redundancy protocol
3. A type of directional antenna
4. A PoE power mode

Correct Answer: 1. The area enclosed by surrounding access points

Explanation:

In wireless location design, the convex hull is the area enclosed by the access points used as location reference points. Location accuracy is generally better when the device being located is inside this surrounding geometry rather than outside the perimeter of the access points. Cisco location validation guidance recommends placing accuracy test points inside the convex hull of AP coverage. This helps the location system use measurements from several directions instead of estimating a position from access points located mainly on one side of the client. Good AP geometry is therefore an important component of location focused wireless design.

Question 57. What percentage of correct floor measurements is recommended during CMX location validation

1. 25 percent
2. 50 percent
3. 75 percent
4. 100 percent

Correct Answer: 4. 100 percent

Explanation:

Cisco CMX location validation guidance states that measurements on the correct floor should reach 100 percent. This metric indicates whether the location system consistently determines the correct floor for the tested wireless client instead of placing it on another floor. Accurate floor determination is especially important in multistory buildings where access points on adjacent floors can hear the same device. Designers should review AP placement, floor map accuracy, and RF propagation when devices are frequently calculated on the wrong floor. Correct floor detection is a basic requirement before finer horizontal location accuracy can be considered reliable.

Question 58. How many samples per test point does Cisco recommend for CMX location accuracy testing

1. 1 to 5
2. 5 to 10
3. 25 to 50
4. 100 to 200

Correct Answer: 3. 25 to 50

Explanation:

Cisco recommends collecting approximately 25 to 50 location measurements at each test point during CMX location accuracy validation. A single location estimate can vary because of normal RF fluctuations, client behavior, multipath, and environmental effects. Collecting several samples provides a more meaningful view of accuracy at that location. Cisco also recommends repeating the test at multiple positions throughout the coverage area and using test points inside the AP convex hull. Location validation does not calibrate the system automatically. It measures whether the existing AP placement and configuration provide the expected accuracy.

Question 59. Which Cisco Spaces factor can reduce AP Auto Location ranging accuracy

1. AP isolation from neighboring APs
2. Larger DHCP scope
3. Longer DNS TTL
4. More controller licenses

Correct Answer: 1. AP isolation from neighboring APs

Explanation:

Cisco Spaces AP Auto Location depends on access points being able to hear neighboring APs for ranging measurements. If an AP is isolated by building structure or has poor line of sight to surrounding APs, it may not generate enough ranging information for automatic placement. Cisco guidance notes that an AP should be heard by several other APs to provide useful ranging data. Isolated APs may need to be placed manually on the floor map. Designers should therefore consider AP density and physical isolation when location services are an important requirement rather than focusing only on client coverage.

Question 60. Why should floor plans use accurate scale during wireless design

1. RF distance calculations depend on correct dimensions
2. It increases switch power
3. It creates controller licenses
4. It changes client authentication

Correct Answer: 1. RF distance calculations depend on correct dimensions

Explanation:

Predictive design and location systems depend on accurate physical dimensions. If a floor plan is imported with an incorrect scale, distances between walls, access points, and coverage areas are calculated incorrectly. This can distort predicted signal levels, access point placement, location accuracy, and capacity planning. Designers should therefore verify floor map dimensions and building details before relying on predictive modeling results. Cisco design training emphasizes survey processes, planning tools, accurate AP placement, and post installation validation because software predictions are only as reliable as the physical information supplied to the design model.