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Q1. An engineer installed a 3702 AP and is getting power from the switch. What is the reason for getting 3x3 MIMO instead of 4x4?
A. 802.1p
B. 802.3af
C. 802.11e
D. 802.3at
Answer: B
Q2. An engineer is preparing for an indoor wireless LAN survey and is provisioning a survey kit. Which three pieces of equipment should be included? (Choose three.)
A. external connector access point
B. integrated antenna access point
C. coax low-loss cable
D. battery operated power supply
E. range finder
F. Yagi antennas
Answer: B,D,E
Q3. After the completion of a site survey with Ekahau Site Survey tool, using the default color palette, it is noted that multiple areas are shown as white on the heat map when viewing 5 GHz signal strength data. What does this indicate about the signal strength?
A. The area is below the minimum threshold configured on the tool.
B. The area is below the detectable level and indicates no RF signal.
C. The area is below -100 dBm at coverage cell edge.
D. The area is below -67 dBm at coverage cell edge.
Answer: A
Q4. While performing a Layer 1 passive wireless site survey of a location an engineer detects several instances of low power frequency hopping interference, but cannot physically locate the interfering device or devices. Why is the engineer unable to locate the offending device or devices?
A. The sources are nearby narrow-beam radar and are sweeping through the facility.
B. The sources are PAN and are mobile.
C. The sources are above the ceiling file and transmit intermittently.
D. The sources are actually high-powered devices and transmit from off the site.
Answer: B
Q5. A network engineer is preparing for an office site survey with a height of 2.5 meters. Which three components are recommended to complete the survey? (Choose three.)
A. Use APs with external antennas.
B. Use DoS attack on APs while measuring the throughput.
C. Use APs with built-in antennas.
D. Use a battery pack to power APs.
E. Use a drawing of the office space to draw AP and client placements.
F. Use APs with directional antennas.
Answer: C,D,E
Q6. A customer wants to implement a wireless network in a historic location, but is concerned about the structural and aesthetic impact to the facility. Which benefit of using wireless mesh addresses these concerns?
A. Power is required only at the installation location.
B. The APs do not have LED lights.
C. More wireless channels can be supported.
D. APs do not need network connections.
Answer: D
Q7. A customer has restricted the AP and antenna combinations for a design to be limited to one model integrated antenna AP for carpeted spaces and one model external antenna AP, with high gain antennas for industrial, maintenance, or storage areas. When moving between a carpeted area to an industrial area, the engineer forgets to change survey devices and surveys several APs. Which option is the best to reduce the negative impact of the design?
A. Deploy the specified access points per area type.
B. Resurvey and adjust the design.
C. Increase the Tx power on incorrectly surveyed access points.
D. Deploy unsurveyed access points to the design.
Answer: B
Q8. An 802.11n implementation is being discussed. Users are satisfied with the potential 300- 450 Mbps throughput of new 802.11n APs. Which three bandwidth requirements are used to calculate per client bandwidth through an 802.11n AP network? (Choose three.)
A. 450 Mbps throughput is the client max for 5-GHz radio.
B. Channel bonding on 5 GHz is required for a client to have a 300 Mbps WiFi link.
C. 300 Mbps throughput is the client max for 2.4-GHz radio.
D. The remaining bandwidth is divided per device when more clients are connected to one AP.
E. 100 Mbps Ethernet switch port is a potential bottleneck.
F. CleanAir helps clear noise for 802.11n channel bonding to work.
Answer: A,C,D
Q9. When designing a WLAN, AP placement is important. Which option describes how to rank the density of APs needed to support location services versus data and voice services?
A. Data services have the lowest density of APs compared to location services, which has the highest density.
B. Data services have a lower density of APs compared to location services, but more than voice.
C. Voice services have the highest density of APs over location and data services.
D. Voice and data services require a higher density of APs than location services.
Answer: A
Q10. An engineer is performing a predictive wireless design for a medical treatment environment, which requires data and voice services. Which of the following is a requirement for the design?
A. overlapping -72 dBm coverage from two access points
B. overlapping -67 dBm coverage from two access points
C. continuous -67 dBm coverage from one access point
D. continuous -72 dBm coverage from one access point
Answer: C
Q11. A customer is deploying a mesh outdoor wireless network based on FCC standards where spectrum analysis shows significant radar energy propagating throughout the coverage area from a local weather station. Which channel must be excluded from the access points RRM calculation to avoid network disruption due to weather radar activity?
A. 132
B. 44
C. 11
D. 36
Answer: A
Explanation:
Weather radars operate within the 5600- to 5650-MHz band, which means that channels 124 and 128 might be affected, but also channels 120 and 132 might suffer from weather radar activity.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/technology/mesh/7-3/design/guide/Mesh/ Mesh_chapter_0111.html
Q12. An engineer is deploying an outdoor Mesh network. Which four major factors should be considered? (Choose four.)
A. power
B. buildings
C. traffic lights
D. satellite dishes
E. line of sight
F. network connectivity
G. power lines
H. mounting
Answer: A,E,F,H
Q13. A hospital environment was designed to guarantee RF coverage at or better than -67 dBm in the 5 GHz spectrum. The customer mandates that RRM be used for DCA and TPC in both bands. After deployment, why do many of the legacy 802.11b/g devices have difficulty maintaining connectivity?
A. Excessive co-channel interference in the 2.4 GHz band exists.
B. Excessive overlapping channels in the 2.4 GHz band exists.
C. TPC drastically reduces Tx power in the 2.4 GHz band.
D. TCP drastically increases Tx power in the 2.4 GHz band.
Answer: C
Q14. An engineer plugs in a Cisco Aironet 2700 Series Access Point and it is running in low power. Which three power requirements should be verified? (Choose three.)
A. 802.3ac compliant
B. 802.3at compliant
C. AP requires 43 VDC to function in full power.
D. AIR-PWRINJ3 power injector should be used.
E. AP requires 57 VDC to function in full power.
F. AIR-PWRINJ4 power injector should be used.
Answer: B,E,F
Explanation:
The access point should be powered by any 802.3at compliant device.
The recommended external power supply for the access point is the Cisco AIR-PWR-B power supply. The access point can also be powered by the following optional external power sources:
– Access point power injector (AIR-PWRINJ4)
– Any 802.3af compliant power injector is supported, but in this case the access point will dynamically shift from 3x4 to 3x3.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/access_point/2700/quick/guide/ap2700getst art.html
Q15. An engineer is preparing for an outdoor wireless survey to mesh connect a distant remote building to a connected building. Which two types of antennas are appropriate for this application? (Choose two.)
A. circular polarized
B. patch
C. dish
D. Yagi
E. omni
Answer: C,D
Q16. Which three recommendations must be taken into consideration when an engineer is installing a new Voice WLAN? (Choose three.)
A. Use the Cisco wireless phone site survey client utility.
B. Use a separate Cisco Wireless Lan Controller.
C. Enable load balance on voice WLANs.
D. Maintain -67dBM as a minimal RSSI.
E. Set data for 2.4 GHz and voice for 5 GHz using separate SSIDs.
F. Enable lower data rates for 2.4-GHz data WLAN.
Answer: A,D,E
Q17. A customer has deployed an N+N redundant wireless infrastructure. In this deployment, the access points have been salt and peppered between controllers. What configuration would be necessary to cut down on the use of mobility tunnels for voice clients?
A. mobility anchor
B. KIS based CAC
C. media session snooping
D. re-anchor roamed voice clients
Answer: D
Q18. What is a common cause for signal attenuation?
A. Cinder block wall
B. Office window
C. Metal door
D. Glass wall
Answer: C