QUESTION 11
Which two statements correctly describe WLAN QoS configuration related to WMM? (Choose two.)
|
A. |
7920 AP CAC mode is not compatible with WMM policy and cannot be used at the same time. |
|
B. |
7920 Client CAC mode is not compatible with WMM policy and cannot be used at the same time. |
|
C. |
7920 AP CAC and 7920 client CAC modes are for 802.11b/g/n only. |
|
D. |
7920 AP CAC and 7920 client CAC modes are for 802.11a/n only. |
|
E. |
7920 AP CAC and 7920 client CAC modes are for 802.11a/b/g/n. |
Answer:
BC
QUESTION 12
Which three call information items does AirMagnet VoFi Analyzer provide? (Choose three.)
|
A. |
the codec used by the calling phone |
|
B. |
approximate length of the call in minutes |
|
C. |
MOS values throughout the duration of the call |
|
D. |
802.11e access category overruns |
|
E. |
co-channel interference percentage during the call |
Answer: ABC
QUESTION 13
The AP has been properly configured for a VoWLAN survey. The RF environment contains a noise of -87 to -90 dBm. What would be the target value for the cell edge reading?
|
A. |
-55 dBm |
|
B. |
-60 dBm |
|
C. |
-62 dBm |
|
D. |
-67 dBm |
|
E. |
-70 dBm |
|
F. |
-73 dBm |
Answer: C
QUESTION 14
Which two applications benefit from upgrading to 802.11n? (Choose two.)
|
A. |
voice |
|
B. |
video |
|
C. |
database access |
|
D. |
digital imaging |
|
E. |
SMS |
|
F. |
|
Answer: BD
QUESTION 15
VoIP clients can be impacted by jitter. Which of these statements best describes jitter?
|
A. |
Jitter occurs because the receiver buffer is smaller than the sender buffer, thus packets are dropped and voice quality becomes worse. |
|
B. |
Jitter is defined as variation in the delay of received packets. |
|
C. |
Jitter can be reduced by designing cells that use only the 802.11a frequency band. |
|
D. |
A best practice to avoid jitter is to ensure that the end-to-end round-trip time does not exceed 150 ms. |
Answer: B
QUESTION 16
Using proper VoWLAN design practice, what would be a reasonable total number of calls for a properly designed 802.11a cell to ensure call quality?
|
A. |
4 |
|
B. |
7 |
|
C. |
14 |
|
D. |
20 |
|
E. |
25 |
|
F. |
27 |
Answer: D
QUESTION 17
WLCs v7.0 have been configured for multicast and IGMP snooping enabled, with all other parameters set to default. A wireless client actively receiving a multicast group roams from WLC1 to WLC2, both of which are configured for the client IP subnet. Which statement describes the roaming process?
|
A. |
There is no required action from the client and WLC2 becomes the local anchor controller. |
|
B. |
A new IGMP packet is required from the client and WLC2 becomes the local anchor controller. |
|
C. |
There is no required action from the client and WLC2 becomes foreign controller and WLC1 becomes anchor controller. |
|
D. |
A new IGMP packet is required from the client and WLC2 becomes foreign controller and WLC1 becomes anchor controller. |
Answer: A
QUESTION 18
VoWLAN implementation plans for a current mix of existing Cisco Unified Wireless IP Phones 7920G and 7921G to a final migration of Wireless IP Phones 7925G in a single WLAN. What would be the most appropriate WLC WLAN configuration to end with Wireless IP Phones 7925G?
|
A. |
7920 Client CAC = enabled only; Radio Policy = All; WMM = Disabled |
|
B. |
7920 AP CAC = enabled only; Radio Policy = All; WMM = Allowed |
|
C. |
7920 Client CAC = enabled only; Radio Policy = 802.11a only; WMM = Disabled |
|
D. |
7920 AP CAC = enabled only; Radio Policy = 802.11a only; WMM = Allowed |
|
E. |
7920 Client CAC = enabled only; Radio Policy = 802.11b/g only; WMM = Disabled |
|
F. |
7920 AP CAC = enabled only; Radio Policy = 802.11b/g only; WMM = Allowed |
Answer: B
QUESTION 19
Refer to the exhibit.
Which two statements describe the WLC configuration? (Choose two.)
|
A. |
AP will effectively allow 75% of bandwidth for local new calls. |
|
B. |
AP will effectively allow 69% of bandwidth for local new calls. |
|
C. |
AP will effectively allow 81% of bandwidth for local new calls. |
|
D. |
Priority roaming calls can be expedited. |
|
E. |
Priority new calls can be expedited. |
Answer: BE
QUESTION 20
Refer to the exhibit.
Voice-bearer traffic is being sent downstream using a WLAN configured for gold QoS. Which two of these options indicate the inner 802.11e QoS markings and QoS CAPWAP markings that are used at location 1? (Choose two.)
|
A. |
Inner 802.11e: UP 5 |
|
B. |
Inner 802.11e: UP 4 |
|
C. |
Outer CAPWAP: CoS 4 |
|
D. |
Inner 802.11e: UP 3 |
|
E. |
Outer CAPWAP: DSCP AF31 |
|
F. |
Outer CAPWAP: DSCP AF41 |
Answer: AF
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