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2021 Oct cisco 640-722 book:
Q61. - (Topic 1)
Which type of basic radiation pattern does a Yagi antenna have?
A. circular
B. semicircular
C. straight line
D. cone
Answer: D
Explanation:
High gain directional antennas: A point to point high gain antenna is a directional antenna that has a focused radiation pattern. The radiation pattern is typically a cone 10 to 30 degrees wide. A yagi and a parabolic dish are examples of high gain directional antennas.
Reference: http://www.hp.com/rnd/pdfs/antenna_tech_brief.pdf
Q62. - (Topic 6)
When using a Cisco WLC version 7.0 with a default configuration, how is a remote management HTTPS access connection secured?
A. The Cisco WLC uses a pre-shared key to authenticate the user, which limits the number of potential users that can access the controller.
B. The Cisco WLC generates its own local web administration SSL certificate and automatically applies it to the GUI.
C. The Cisco WLC uses a CA certificate for SSL access.
D. The Cisco WLC uses HTTPS to secure the HTTP session via a preconfigured password that generates a certificate for each session.
Answer: B
Explanation:
You can protect communication with the GUI by enabling HTTPS. HTTPS protects HTTP browser sessions by using the Secure Socket Layer (SSL) protocol. When you enable HTTPS, the controller generates its own local web administration SSL certificate and automatically applies it to the GUI. You also have the option of downloading an externally generated certificate.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/controller/6-0/configuration/guide/Controller60CG/c60intf.html
Q63. - (Topic 2)
You are configuring an IP address on an autonomous access point. Which interface do you use to configure the IP address?
A. BVI1
B. FastEthernet 0
C. Dot11Radio0
D. VLAN 1
Answer: A
Explanation:
Assigning the IP Address to the BVI
When you assign an IP address to the access point by using the CLI, you must assign the address to the bridge-group virtual interface (BVI). Beginning in a privileged EXEC mode, follow these steps to assign an IP address to the access point BVI using the access point console port.
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
interface bvi1
Enters interface configuration mode for the BVI.
Step 3
ip address ip_address net_mask
Assigns an IP address and subnet mask address to the BVI.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/access_point/1140/autonomous/getting_star ted/guide/ap1140aut_getstart.html
Q64. - (Topic 3)
The introduction of consumer phones and tablets into enterprise WLANs can have an impact on 802.11a/b/g/n deployments. The Apple iPhone 4 and iPad 2 are very common examples.
Which statement best describes the abilities of these devices?
A. The Apple iPhone 4 and the iPad 2 use 2.4 GHz and 5 GHz. The Apple iPhone 4 uses only one spatial stream and the iPad 2 uses two spatial streams.
B. The Apple iPhone 4 uses only 2.4 GHz and the iPad 2 only uses 5 GHz. The Apple iPhone 4 uses only one spatial stream and the iPad 2 uses two spatial streams.
C. The Apple iPhone 4 uses 2.4 GHz and the iPad 2 uses 2.4 GHz or 5 GHz. The Apple iPhone 4 only uses one spatial stream and the iPad 2 uses two spatial streams.
D. The Apple iPhone 4 uses 2.4 GHz and the iPad 2 uses 2.4 GHz or 5 GHz. The Apple iPhone 4 and the iPad 2 use only one spatial stream.
Answer: D
Explanation:
The apple iPhone 4 and iPAD2 supports only 2.4 Ghz (no 5 Ghz) wireless networks. Support for 5Ghz networks was introduced with the Apple iPhone5 and the iPAD 3.
Q65. - (Topic 7)
Wireless clients are experiencing loss of connectivity while roaming between controllers. To fix this, what configuration should be the same on all controllers within the mobility group?
A. management interface IP address
B. IP address of the virtual interface
C. AP Manager interface IP address
D. IP address of the Service Port
Answer: B
Down to date ccna wireless study guide iuwne exam 640-722:
Q66. - (Topic 3)
Which Cisco AnyConnect module allows you to set the parameters that are needed to connect to the wireless network?
A. NAM
B. DART
C. posture
D. telemetry
Answer: A
Explanation:
The main components used in IUWNE are the Cisco AnyConnect Mobility Client itself, associated with the Network Access Module (NAM) used to manage existing profiles and provide the wireless connectivity. You also can click Advanced to open the NAM front end. You can then manage profiles (create, delete, reorder). The network administrator can restrict the types of networks that the end user can manipulate on the NAM.
Reference: CCNA Wireless (640-722 IUWNE) Quick Reference Guide page 73
Q67. - (Topic 1)
What does RF determine?
A. cycle pattern size
B. how often a wave occurs
C. signal size
D. quantity of energy injected in a signal
Answer: B
Explanation:
RF communication works by creating electromagnetic waves at a source and being able to pick up those electromagnetic waves at a particular destination. These electromagnetic waves travel through the air at near the speed of light. The wavelength of an electromagnetic signal is inversely proportional to the frequency; the higher the frequency, the shorter the wavelength.
Reference: http://www.digi.com/technology/rf-articles/rf-basic
Q68. - (Topic 2)
Which three AP modes of operation allow for the wIPS sub mode? (Choose three.)
A. local mode
B. bridge mode
C. monitor mode
D. H-REAP mode
E. rogue detector mode
F. SE-Connect mode
G. sniffer mode
Answer: A,C,D
Explanation:
Only Cisco Aironet 1130, 1140, 1240, 1250, 3502E and 3502I Series Access Points support wIPS monitor mode.
.The wIPS sub mode is supported only when access point mode is Monitor, Local or HREAP. But for 1130 and 1240 access points, wIPS is supported only in Monitor Mode.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/mse/3350/7-0MR1/wIPS/configuration/guide/wIPS_70MR1/msecg7x_ch6_wIPS.html
Q69. DRAG DROP - (Topic 6)
Drag the commands on the left that are enabled during a SSH or Telnet session with a lightweight AP and drop them on the right.
Answer:
Q70. - (Topic 2)
Which two statements about the requirements to configure inter-controller roaming are true? (Choose two.)
A. The same mobility domain names are configured across controllers.
B. The same RF group names are configured across controllers.
C. The same controller hardware version is configured across controllers.
D. The same AP manager interface is configured across controllers.
E. The same virtual interface is configured across controllers.
F. The same controller software version is configured across controllers.
Answer: A,E
Explanation:
All controllers must be configured with the same mobility group name.
All controllers must be configured with the same virtual interface IP address.
If necessary, you can change the virtual interface IP address by editing the virtual interface name on the Controller > Interfaces page.
If all the controllers within a mobility group are not using the same virtual interface, inter-controller roaming may appear to work, but the handoff does not complete, and the client loses connectivity for a period of time.
Reference: http://www.cisco.com/c/en/us/td/docs/wireless/controller/7-0/configuration/guide/c70/c70mobil.html