Dynamic Frequency Selection Channels
When a DFS–enabled radio is operating on one of the
following channels, the wireless device uses DFS to monitor the operating frequency
and switch to another frequency or reduce power as necessary:
• 52 (5260
MHz)
• 56 (5280
MHz)
• 60 (5300
MHz)
• 64 (5320
MHz)
• 100 (5500
MHz)
• 104 (5520
MHz)
• 108 (5540
MHz)
• 112 (5560
MHz)
• 116 (5580
MHz)
• 120 (5600
MHz)
• 124 (5620
MHz)
• 128 (5640
MHz)
• 132 (5660
MHz)
• 136 (5680
MHz)
• 140 (5700
MHz)
NEW 1:
What is max power for an AP for all regulatory bodies ? ( Or
something close to that )
1)10
2)8
3)1
4)X
Answer:
3
Explanation:
A value of 1 corresponds to the maximum power level that is allowed
in the AP’s regulatory domain. (Chapter 13 of certification guide) (Double
Checked by guilherme1846)
NEW 2:
What is the deployment that requires least amount of
hardware installed on the site:
1)Cloud
2)Converged
3)Centralized
4)….
Answer: 1 (Double Checked by guilherme1846)
NEW 3:
What command can be used on the WLC to show the logs (or
something) for an AP with the name Cisco_AP ?
1)show logging
2)show ap eventlog Cisco_AP
3) x
4) x
Answer: Don’t remember the other two options. I
chose option 2, I think it’s the correct one
NEW 4:
What is the command used to debug an AP that is not able to join the
WLC ?:
1)debug capwap events enable (on the WLC)
2)debug capwap events enable (on the AP)
3) x
4) x
Answer: Don’t remember the last two options, but I’m sure it’s choice No.1
NEW 5:
What are the channels you need to avoid not to have interference with
DFS channels ?
1) 52
2) 136
3) 124
4) 161
5) something less than 50
Answer:
I chose 52,136,124. Make sure you know what are the DFS Channels.
NEW 6:
What is required from the deployment when using voice or video
applications, choose 3: (Something like that)
1) RSSI cell edge of -25
2) RSSI cell edge of -16
3) SNR of 25 ……
4) Cell Overlap of 20%
5) RSSI -67
Answer:
3,4,5
NEW 6:
What are the sources of interference you will find when conducting a
site survery before deployment(Something like that)?
1-Bluetooth Headset
2-Microwave Ovens
3-Analog Wireless Camera
4-AdHoc Wireless Camera
5-AdHoc Hotspot
Answer:
2,3,5
NEW 7:
what are reqs for VoWLAN:
A) RSSI -67
B) SNR 25
C) 20% overlapping cells (not sure it’s true),
Answer:
A,B,C
NEW 8:
what is SNR needed for 54 Mbps (data, voice – no remember)
A) SNR 25
Answer: A
NEW 9:
what is max level in Cisco WLC TPC for all regulatory domain
A) Power Level 1
Answer: A
Explanation:
A value of 1 corresponds to the maximum power level that is allowed
in the AP’s regulatory domain. (Chapter 13 of certification guide) (Double
Checked by guilherme1846)
New
10:
Engineer needs an LAP to support few WLANs with different
DHCP servers for different SSIDs, how to
fulfill this requirement?
A. configuring dynamic VLAN interfacesto SSIDs in AP
group.
B. configure DHCP in AP settings advanced page
C. xxx
D. xxx
Answer: I
chose A. It should be correct.
New 11:
Which wireless survey you do considering the
"infrastructure" in the building?
A. Passive
B. Active
C. Planning
D. xxx
Answer: I chose C. i guess it is wrong.
New 12:
What are the minimum requirements to operate cisco 7925
wireless phone.(choose 3)
A. RSSI -67
B. SNR 25
C. 20% cell overlapping
D. xxx
Answer: I chose A,B,C. It should be correct.
New 13:
Which WLC menu you use the check the assigned power level
of an AP.
A. Wireless
B. Management
C. Controller
D. Monitor.
Answer: A
Explanation: (Double check by guilherme1846
according chapter 13 from Certification Guide)
New 14:
How much wireless cell overlapping is required for 5GHz
voice and data roaming.
A. 5%
B. 10%
C. 15%
D. 20%
Answer: D
Explanation: How much
should cells overlap each other to promote good roaming? Cisco recommends
10–15 percent overlap for most data
applications and 15–20 percent overlap for voice.
(Double checked by guilherme1846 according
chapter 7 from certification guide)
New 15:
What interference you will see when conducting a site
survery (Choose 3)-similar Q in Doc file.
A. Microwave Ovens
B. Analog Wireless Camera
C. AdHoc Hotspot
D. Bluetooth link
E. xxx
Answer: I chose A,B,C. It should be correct.
New 16:
Which CLI command you use in WLC to update the running
IOS.
Answer: I chose the one with "TFTP" in
the answer. all other 3 seemed not correct.
· Issue the transfer download mode tftp command in order
to define the mode of file transfer.
· Issue the transfer download serverip TFTP_server_IP_address
command in order to define the TFTP server IP address.
· Issue the transfer download path 'TFTP_server_path'
command in order to define the path of the TFTP default directory where the
controller OS software is located.
· Issue the transfer download filename filename
command in order to specify the name of the image.
Here is an example:
(Cisco Controller) >transfer download datatype code
(Cisco Controller) >transfer download mode tftp
(Cisco Controller) >transfer download serverip
10.77.244.196
(Cisco Controller) >transfer download path .
(Cisco Controller) >transfer download filename
AIR-WLC4400-K9-5-2-178-0.aes
New 17:
How much SNR needed to reach 54Mbps in 802.11g network?
A. 25
B. 10
C. XX
Answer: I Chose A. (Higher SNR better throughput,
so I think 25 it’s the correct one)
Data rate
minimum Signal minimum SNR
54 Mbps
-71dBm
25 dB
36 Mbps
-73dBm
18 dB
24 Mbps
-77dBm
12 dB
10/11 Mbps -82dBm
10
dB
6/5.5 Mbps
-89dBm
8 dB
New 18:
Which software you can use to do both active and passive
site surveys?
A. Fluke networks Airmagnet Pro
B. Fluke networks Airmagnet lite (or something like that)
C. Cisco spectrum analyzer
D. xxx
Answer: I chose A. Not sure.
New 19:
How Cisco spectrum analyzer analyse the scanned data
(something like that)
A. Store scanned data during wifi scan and analyze later.
Answer: I chose A, not sure. dont remember other
choices.
New 20:
Some new question about Anchor controller. Sorry dont
remember.
