Which three options are benefits of U-APSD? (Choose three.)
A.
synchronization of the transmission and reception of voice frames
B.
bandwidth reservation
C.
optimized power-save mode periods
D.
increased call capacity
E.
priority bandwidth and polling
Explanation:
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New 642-742 Exam Questions and Answers Updated Recently (12/Mar/2016):
NEW QUESTION 158
What protocol can be enabled to listen in on IPv4 multicast streams and maintain a map of what each client requests on a wireless LAN controller?
A. IGMP
B. MLD
C. PAP
D. ICMP
E. SIP
F. NTP
Answer: A
NEW QUESTION 159
Which two security technologies should be used when deploying a 100 Wi-Fi phone installation? (Choose two.)
A. Use WPA-PSK.
B. Use IEEE 802.1X with unique users on each phone.
C. Use the same IEEE 802.1X username on all phones.
D. Use IEEE 802.1X and WEP 128.
E. Use IEEE 802.1X and WEP 256.
F. Use IEEE 802.1X and WPA2 and Cisco Centralized Key Management.
Answer: BF
NEW QUESTION 160
A customer wants FSR and certificate-based authentication. The solution must be simple to deploy. Which method should be used to meet the requirements?
A. EAP-TLS
B. PEAP-MSCHAPv2
C. EAP-FAST
D. PEAP-MSCHAPv2 machine authentication
Answer: C
NEW QUESTION 161
A network engineer is having wireless multicast fail when it hits the wired network. What command will show the source of multicast groups for troubleshooting?
A. show ip igmp
B. show ip mroute
C. show ip mcache
D. show ip interface counts
E. show ip route
Answer: B
NEW QUESTION 162
An engineer is configuring a new VoWLAN and wants only IEEE 802.11g/n to be supported. Which two data rates should be configured? (Choose two.)
A. 18 Mbps and higher should be supported.
B. Lower than 24 Mbps should be supported.
C. Lower than 11 Mbps should be disabled.
D. 1, 2, 5.5, and 11 Mbps should be disabled.
E. 11 Mbps should be mandatory.
F. 6 and 9 Mbps should be supported.
G. 12 Mbps should be mandatory.
Answer: AG
NEW QUESTION 163
Which two critical requirements must be addressed in the RF site survey for wireless video surveillance? (Choose two.)
A. packet loss
B. jitter
C. bandwidth
D. channel selection
E. WLC configuration
Answer: AB
NEW QUESTION 164
A Cisco partner has finished completing a CUWN install for a healthcare customer. After completing the deployment, the support center has received a ticket stating the 7925 VoIP phones will not connect in a few of the remote offices. The phones display ‘configuring IP’ consistently. What would be the next step for troubleshooting?
A. verify option 43 has been configured
B. verify option 150 has been configured
C. verify the DNS server has been configured
D. verify the domain name has been configured
Answer: B
NEW QUESTION 165
An engineer has been assigned the task of deciding the cell overlap for a wireless voice deployment. Which Cisco measurement recommendation should be considered?
A. The edge of the cell should be -67 dBm.
B. One AP should be deployed per 3000 square feet.
C. The edge of the cell should be below 35 RSSI.
D. The measurement should be done on the 2.4-GHz band.
Answer: A
NEW QUESTION 166
After enabling global multicast, multicast traffic has been flooding the wired and wireless network. The wireless engineer has been troubleshooting and is attempting to find the source of the traffic. What command will display the multicast traffic source as well as the incoming interface?
A. show ip mroute
B. show ip igmp groups
C. show ip pim neighbor
D. show ip device tracking all
Answer: A
NEW QUESTION 167
A network engineer wants the DSCP marking to align with the 802.11e access category video. What will this marking be?
A. 4
B. 34
C. 5
D. AF31
Answer: B
NEW QUESTION 168
Users are experiencing poor audio quality when calling from their 7925 series VoIP Phones. Call quality is exceptional from wired to wired phones, but not from wired to wireless phones. The wired network has QoS deployed properly and the SSID is configured with Platinum QoS. What should be verified to troubleshoot the issue?
A. The controller is marking the 802.1p tag of 3, the AP switchport has been configured to trust DSCP, and the controller’s switchport to trust CoS.
B. The controller is marking the 802.1p tag of 4, the AP switchport has been configured to trust CoS, and the controller’s switchport to trust DSCP.
C. The controller is marking the 802.1p tag of 5, the AP switchport has been configured to trust DSCP, and the controller’s switchport to trust CoS.
D. The controller is marking the 802.1p tag of 6, the AP switchport has been configured to trust CoS, and the controller’s switchport to trust DSCP.
Answer: C
NEW QUESTION 169
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