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2021 Nov ccna wireless 640-722 study guide pdf free download:
Q91. - (Topic 7)
What is a function of the service port on a WLC?
A. controls mobility manager communications on all physical ports
B. controls out-of-band management for system recovery and maintenance
C. controls communication with Cisco Aps
D. controls communications for all physical ports
Answer: B
Q92. - (Topic 1)
What is the IEEE name for a group of access points that are connected by using the Ethernet?
A. ESS
B. BSS
C. IBSS
D. ISS
Answer: A
Explanation:
The wired section of the network that can be reached through the AP is called, from the perspective of the wireless side, the Distribution System (DS). When the distribution system links two APs, or two cells, via Ethernet, the group is called an Extended Service Set (ESS).
Reference: CCNA Wireless (640-722 IUWNE) Quick Reference Guide page 5
Q93. - (Topic 1)
Which calculation computes the EIRP of an antenna?
A. EIRP = Tx power (dBm) + Antenna Gain (dBi) - Cable Loss (dB)
B. EIRP= Cable Loss (dB)+ Antenna Gain (dBi) - Tx power (dBm)
C. EIRP = Cable Loss (dB)+ Antenna Gain (dBi) / Tx power (dBm)
D. EIRP = Tx power (dBm) + Antenna Gain (dBi) / Cable Loss (dB)
E. EIRP = Antenna Gain (dBi) - Cable Loss (dB) * Tx power (dBm)
F. EIRP = Tx power (dBm) * Antenna Gain (dBi) / Cable Loss (dB)
Answer: A
Explanation:
EIRP (Effective Isotropic Radiated Power)
EIRP (Effective Isotropic Radiated Power) is the actual amount of signal leaving the antenna and is a value measured in db and is based on 3 values:
a) Transmit Power (dBm)
b) Cable Loss (dB)
c) Antenna Gain (dBi)
The dB measures the power of a signal as a function of its ratio to another standardized value. The abbreviation dB is often combined with other abbreviations in order to represent the values that are compared. Here are two examples:
dBm — The dB value is compared to 1 mW.
dBw — The dB value is compared to 1 W.
You can calculate the power in dBs from this formula:
Power (in dB) = 10 * log10 (Signal/Reference)
This list defines the terms in the formula:
log10 is logarithm base 10.
Signal is the power of the signal (for example, 50 mW).
Reference is the reference power (for example, 1 mW).
How to find EIRP
To determine EIRP follow this equation:
<Transmit Power> - Cable Loss + Antenna Gain = EIRP
Reference: https://supportforums.cisco.com/document/49506/snr-rssi-eirp-and-free-space-path-loss
Q94. - (Topic 7)
What tool can be used to increase accuracy of WCS heat maps?
A. Map Editor
B. Planning Tool
C. CleanAir
D. Cisco Spectrum Expert
Answer: A
Q95. - (Topic 5)
A Cisco WCS administrator has marked an alarm as acknowledged. For how many days does Cisco WCS prevent the alarm from reappearing, even if the source of the alarm reoccurs?
A. 1
B. 7
C. 10
D. 30
Answer: B
Explanation:
WCS automatically deletes cleared alerts that are more than seven days old; therefore, your results can show activity only for the last seven days. Until an existing alarm is deleted, a new alarm cannot be generated for any managed entity for which WCS has already generated an alarm.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/wcs/7-0/configuration/guide/WCS70cg/7_0event.pdf
Avant-garde ccna wireless official exam certification guide 640-722:
Q96. - (Topic 5)
You have a small organization with multiple Cisco WCS servers. Management has become cumbersome and you are planning to deploy Cisco WCS Navigator.
When the Cisco WCS Navigator has been deployed, how are the existing Cisco WCS servers added to the Cisco WCS Navigator, which software versions are supported, and which protocol(s) do they use to communicate with Navigator?
A. Cisco WCS Navigator searches the enterprise intranet to locate the existing Cisco WCS servers and adds them automatically using SOAP as long as there is only a difference of one version or less between Cisco WCS and WCS Navigator.
B. Each existing Cisco WCS server must be added manually and use SOAP/HTTP to communicate with the Cisco WCS Navigator platform as long as the software versions of Cisco WCS and Cisco WCS Navigator are the same.
C. Cisco WCS must be on the same software version as Cisco WCS Navigator and each Cisco WCS server is added automatically using XML over HTTP.
D. When Cisco WCS Navigator is added, all the Cisco WCS servers must be added manually, each system must use the same software release as Navigator, and the Cisco WCS communicates with Cisco WCS Navigator by using SOAP/XML over HTTPS.
Answer: D
Explanation:
Please refer to the link to understand this part.
Reference: http://www.cisco.com/c/en/us/products/collateral/wireless/wireless-control-system-navigator/product_data_sheet0900aecd80633649.html
Q97. - (Topic 7)
An engineer is adding a controller to a WCS. What three categories of parameters are needed? (Choose three.)
A. IP parameters
B. SNMP Parameters
C. Mobility Parameters
D. Telnet/SSH Parameters
E. TFTP Parameters
F. RADIUS Parameters
Answer: A,B,D
Q98. - (Topic 1)
What is an MBSSID?
A. a virtual AP configured on a physical AP that share a single physical device, which is one half-duplex radio
B. a set of physical APs configured in a BSA to form cells that are controlled by a single controller
C. the group of clients that are allowed to gain access to one or more SSIDs configured in an AP
D. the identified overlap area between two cells, which identifies the clients that are operating in that area at any given time
Answer: A
Explanation:
Some APs can offer only one SSID per radio. Other APs have a slot of MAC addresses available and can support several SSIDs per radio, using Multiple BSSIDs (MBSSID). MBSSIDs basically are virtual APs that still share the same physical device, which has a half-duplex radio. MBSSIDs are a way to differentiate the traffic reaching the AP, not a way to increase the capacity of the AP.
Reference: CCNA Wireless (640-722 IUWNE) Quick Reference Guide
Q99. - (Topic 6)
Which three WLC debug commands are appropriate to troubleshoot a wireless client that is associated to an AP? (Choose three.)
A. debug capwap
B. debug mac addr
C. debug dot11
D. debug dhcp
E. debug ap
F. debug dtls
Answer: B,C,D
Explanation:
See reference link for associated WLC debug commands.
Reference: “WLC Debug and Show Commands”
http://www.cisco.com/c/en/us/support/docs/wireless/4400-series-wireless-lan-controllers/112064-wlc-commands.html
Q100. - (Topic 7)
What two AP configurations will show RF prediction on maps in WCS? (Choose two.)
A. Lightweight APs with internal antennas
B. Lightweight APs with external Cisco antennas
C. Lightweight APs with external 3rd Party antennas
D. Autonomous APs with internal antennas
E. Autonomous APs with external Cisco antennas
F. Autonomous APs with external 3rd Party antennas
Answer: A,B