PW0-250 Online Practice Questions and Answers

Your customer location is equipped with DAS, originally deployed to relay a GSM signal indoors and provide 802.11 data coverage to static stations. What type of wireless application would be least likely to be supported by this RF distribution model?

A. On-demand video streaming over wireless

B. Data connection with frequent roaming

C. Location-based services for wireless assets or RFID tags

D. VoWLAN if the codec is G.729.

E. FTP over implicit TLS/SSL

Given: Use Exhibit 1, 2, and 3 to answer the question.

The azimuth and elevation charts for which type of antenna are shown in Exhibit 1?

A. Figure 1

B. Figure 2

C. Figure 3

D. Figure 4

E. Figure 5

F. Figure 6

Given: The 802.11n APs you have selected for your public access deployment support many of the PHY and MAC enhancements offered by the 802.11n standard. The AP is single-band (2.4 GHz) and only allows 20 MHz channels. The WLAN radio in the AP is a 3x3 802.11n chip that supports two spatial streams.

What is the maximum MCS rate that could be supported by this AP?

A. 54 Mbps

B. 65 Mbps

C. 108 Mbps

D. 144 Mbps

E. 150 Mbps

F. 300 Mbps

You are working on a VoWLAN design with your customer's wired networking team. How many distinct priority levels do you expect for the voice applications?

A. 1 priority level, but 2 queues (one for uplink traffic, one for downlink traffic)

B. 1 priority level per client and AP pair, so the total number depends on the expected number of clients

C. 1 priority level for voice RTP, 1 priority level for voice control and RTCP

D. 1 priority level for VoWLAN client traffic, 1 priority level for wired VoIP client traffic

Given: For this fill-in the blank question, each answer option contains an answer for the first and second blanks, separated by a dash "--". Choose the answer option that correctly fills in both blanks in the following sentence.

A WLAN may use 802.11 admission control to________, and admission control requirements are configured separately for each________

A. Block stations with inadequate security parameters -- SSID

B. Identify voice-enabled wireless devices -- AP radio (that is, 2.4 GHz or 5 GHz)

C. Regulate the available bandwidth resources -- Access Category

D. Mark ingress and egress frames with priority values -- TCP/IP port

E. Administer VoWiFi use policy -- VLAN

In a large enterprise (5000+ wireless users), by what recommended methods are IP addresses and VLANs assigned to different clients associated to the same AP? (Choose 3)

A. Each SSID is mapped to a static VLAN assignment

B. Upstream AAA servers dynamically assign VLANs to each user or group profile

C. Radio signal metrics (RSSI, SNR, etc.) of WLAN clients are triangulated for location-based VLAN assignment during association

D. Each BSSID is assigned a unique VLAN to help manage the size of broadcast domains on the wired network

E. Multiple VLAN pools are designated for an SSID and user IP addresses are selected in a round-robin fashion from the associated pools.

F. In a centralized data forwarding model, clients automatically receive an IP address on the native VLAN of the AP's Ethernet access port.

G. The configuration profile of the client supplicant is hard-coded with a VLAN ID.

What antenna connector type is displayed in the exhibit?

A. RP-TNC

B. RP-SMA

C. N Connector

D. MC Connector

E. MMCX

When preparing a floor plan graphic for use in predictive and manual site surveying, what calibration method will lead to the most accurate and reliable RF data?

A. Use the known size of a small object, such as a ceiling tile, and use a single instance of this object (e.g. a single ceiling tile) to scale the floor plan.

B. Measure the width of an actual office doorway with a tape measure and use this value to calibrate against a doorway graphic.

C. Use the longest available measurement (like a straight exterior wall) to calibrate the graphic's scale.

D. Calibrate the ceiling height of the floor plan first, then the survey software should be able to auto-calibrate the X and Y planes of the graphic.

E. With properly formatted .bmp and .png graphics, the site survey software should be able to extract the scale directly from the graphic data during import.

ABC Manufacturing has a heavily-used dual-band (2.4 / 5 GHz) WLAN, but sporadic RF interference across the 2.4 GHz band is causing dropped VoWiFi calls and leading to data connectivity and throughput problems.

What steps should ABC Manufacturing take to most effectively remedy this problem?

A. Solution 1

B. Solution 2

C. Solution 3

D. Solution 4

What is the DSCP Per Hop Behavior equivalent classification of the 802.11e AC_VO priority level?

A. AF31

B. EF

C. VO

D. AF12

E. CS3