CWNP PW0-250 問題集

質問 1：
What is the DSCP Per Hop Behavior equivalent classification of the 802.11e AC_VO priority level?
A. VO
B. AF31
C. AF12
D. EF
E. CS3
正解：D

質問 2：
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. FTP over implicit TLS/SSL
B. On-demand video streaming over wireless
C. VoWLAN if the codec is G.729.
D. Data connection with frequent roaming
E. Location-based services for wireless assets or RFID tags
正解：E

質問 3：
One of your customers plans on providing wireless coverage to a warehouse facility. After performing an initial walkthrough, you collect the following information:

What would be your recommendation to provide coverage to the central area (indicated by a blue circle) of the warehouse?
A. Install APs for client access in the central area and use a mesh backhaul link to connect to the DS.
B. Equip workers laptops with a directional antenna and install APs less than 328 feet (100m) away from the switch.
C. In this case, extend the cable length just beyond 328 feet (100 m) and position APs as close as possible to the central area of the warehouse.
D. Position APs along the walls, and equip the APs with Yagi antennas to cover the central area.
正解：A

質問 4：
Assume that your network operates in a regulatory domain that allows use of UNII-1, UNII2, UNII-2e, UNII-3, and the 5.8 GHz ISM band for indoor Wi-Fi. In your upcoming 802.11n deployment, you would like to take advantage of the performance improvements that result from channel bonding. However, after extensive testing, you have determined that your mission-critical WLAN should not use channels requiring DFS support.
Given those two criteria (enable channel bonding and disable DFS channels), in the 5 GHz spectrum, how many non-overlapping channels will your system be able to use?
A. 2
B. 3
C. 4
D. 11
E. 6
正解：C

質問 5：
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. Identify voice-enabled wireless devices - AP radio (that is, 2.4 GHz or 5 GHz)
B. Mark ingress and egress frames with priority values - TCP/IP port
C. Block stations with inadequate security parameters - SSID
D. Regulate the available bandwidth resources - Access Category
E. Administer VoWiFi use policy - VLAN
正解：D

質問 6：
Excessive uplink RTP frame retransmissions can result in ____________. (Choose 3)
A. Increased jitter in a VoWiFi connection
B. Lowering of the data transmission rate by the transmitting station
C. Shortened battery life of a transmitting station
D. Head-of-Line blocking at the receiver
E. MOS scores in excess of 5
F. Deauthentication of the transmitter by the receiver
正解：A,B,C