766 お客様のコメント
質問 1：
What threecipher suites are specified by the IEEE 802.11-2012 standard? (Choose 3)
A. Extensible Authentication Protocol
B. Internet Protocol Security
C. GCM with Galois Message AuthenticationCode (GMAC) Protocol
D. Wi-Fi Protected Access v1 and v2
E. Wired Equivalent Privacy
F. Temporal Key Integrity Protocol
G. Counter Modewith CBC-MAC Protocol
正解：E,F,G
質問 2：
ABC Company has a 2.4 and 5 GHz WLAN deployment. DFS functionality is enabled as required by the regulatory domain andAPs use DFS channels as long as radar is not detected. Band steering is also enabled to encourage dual-band clients to use frequency bands with more capacity.
Your performance analysis shows that many dual-band VoWiFi client devices will move back and forth between 2.4 and 5 GHz as the users roam throughout the building. All APs have 2.4 and 5 GHz radios enabled with transmit power adjusted to accommodate relatively similar cell sizes.
This "band hopping" behavior is viewed by network staff to be undesirable. What is the most likely cause of the unpredictable client band selection behavior?
A. Interference from 5 GHz radar sources has increased frame corruption and retries on channels 36-48.
B. The client's band selection algorithm prefers 5 GHz, butband steering behavior usually steers 75-85% of client devices to 2.4 GHz.
C. 5 GHz frequencies offer better RF penetration than 2.4 GHz, but2.4 GHz offers more voice call capacity and lower latency than 5 GHz.
D. The voice client does not support DFS, and therefore experiences some 5 GHz coverage holesas it moves through the network.
正解：D
質問 3：
To ease user complexity, your company has implemented a single SSID for all employees.
However, the network administrator needs a way to control the network resources that can be accessed by each employee based on their department.
What WLAN feature would allow the network administrator to accomplish this task?
A. WIPS
B. WPA2
C. VRRP
D. RBAC
E. IPSec
F. SNMP
正解：D
質問 4：
Which features are incorporated in the802.11-2012 specification and are recommend for robust WLAN client security? (Choose 2)
A. 802.1X/EAP
B. IPSec VPN
C. SSID hiding
D. CAPWAP with DTLS
E. CCMP cipher suite
F. MAC address white lists
正解：A,E
質問 5：
What problems may occur when there are hidden nodes in the BSS?
A. Use of frame fragmentation with fragment bursts.
B. High retransmission count for a subset of client stations.
C. Increase in downlink (transmitted by AP) frame retries.
D. Duration values vary widely in each data frame.
E. Excessive use of null data frames.
正解：B
質問 6：
You are onsite with a client to perform a post-deployment site survey. When verifying a multiple channel VoWiFi deployment using a VoWiFi handset, which aspect is most important?
A. Configuring DSCP-to-802.11e QoS maps on the handset for each access category.
B. Verifying the VHT functionality to handle the call volume incurred by a single VoIP phone call.
C. Testing a constant conversation orhandset tone while roaming from area to area, or performing an active survey
D. Performingprotocol analysis with a single wireless adapter that is scanning all channels in use
正解：C
質問 7：
You are being interviewed by ABC Company for employment as a wireless site surveyexpert. The interviewing manager asks you what items should be included in a site survey report generated as part of a manual site survey process.
What answer would be accurate?
A. Documentation noting how each WLAN user group will authenticate to the network
B. RF heat map illustrating coverage and signal quality for each frequency band
C. Documentation proving proper entry of wall material types into the site survey software
D. Itemized list of equipment, licenses, and support contracts required forthe facility
正解：B
質問 8：
What answers correctly complete the following sentence?
____________ and ____________ carrier sensefunctions are used to determine if the wireless medium is busy. (Choose 2)
A. Interframe
B. Physical
C. Active
D. Backoff
E. Pseudo-random
F. Vector
G. Virtual
正解：B,G
質問 9：
In a single channel architecture (SCA) WLAN system, 802.11n (HT) APs should not share an SSID with 802.11g (ERP) APs.
What is the reason for this recommendation?
A. Client stations would see two different sets of AP capabilities as they roam between APs with the same BSSID.
B. The additional beacon material in 802.11n beacons wouldconfuse 802.11b/g client stations.
C. Beacons from 802.11n APs use 40 MHz channels, while beacons from 802.11g APs use
20 MHz channels.
D. The added range of 802.11n APs would cause additional co-channel interference.
正解：A
What threecipher suites are specified by the IEEE 802.11-2012 standard? (Choose 3)
A. Extensible Authentication Protocol
B. Internet Protocol Security
C. GCM with Galois Message AuthenticationCode (GMAC) Protocol
D. Wi-Fi Protected Access v1 and v2
E. Wired Equivalent Privacy
F. Temporal Key Integrity Protocol
G. Counter Modewith CBC-MAC Protocol
正解：E,F,G
質問 2：
ABC Company has a 2.4 and 5 GHz WLAN deployment. DFS functionality is enabled as required by the regulatory domain andAPs use DFS channels as long as radar is not detected. Band steering is also enabled to encourage dual-band clients to use frequency bands with more capacity.
Your performance analysis shows that many dual-band VoWiFi client devices will move back and forth between 2.4 and 5 GHz as the users roam throughout the building. All APs have 2.4 and 5 GHz radios enabled with transmit power adjusted to accommodate relatively similar cell sizes.
This "band hopping" behavior is viewed by network staff to be undesirable. What is the most likely cause of the unpredictable client band selection behavior?
A. Interference from 5 GHz radar sources has increased frame corruption and retries on channels 36-48.
B. The client's band selection algorithm prefers 5 GHz, butband steering behavior usually steers 75-85% of client devices to 2.4 GHz.
C. 5 GHz frequencies offer better RF penetration than 2.4 GHz, but2.4 GHz offers more voice call capacity and lower latency than 5 GHz.
D. The voice client does not support DFS, and therefore experiences some 5 GHz coverage holesas it moves through the network.
正解：D
質問 3：
To ease user complexity, your company has implemented a single SSID for all employees.
However, the network administrator needs a way to control the network resources that can be accessed by each employee based on their department.
What WLAN feature would allow the network administrator to accomplish this task?
A. WIPS
B. WPA2
C. VRRP
D. RBAC
E. IPSec
F. SNMP
正解：D
質問 4：
Which features are incorporated in the802.11-2012 specification and are recommend for robust WLAN client security? (Choose 2)
A. 802.1X/EAP
B. IPSec VPN
C. SSID hiding
D. CAPWAP with DTLS
E. CCMP cipher suite
F. MAC address white lists
正解：A,E
質問 5：
What problems may occur when there are hidden nodes in the BSS?
A. Use of frame fragmentation with fragment bursts.
B. High retransmission count for a subset of client stations.
C. Increase in downlink (transmitted by AP) frame retries.
D. Duration values vary widely in each data frame.
E. Excessive use of null data frames.
正解：B
質問 6：
You are onsite with a client to perform a post-deployment site survey. When verifying a multiple channel VoWiFi deployment using a VoWiFi handset, which aspect is most important?
A. Configuring DSCP-to-802.11e QoS maps on the handset for each access category.
B. Verifying the VHT functionality to handle the call volume incurred by a single VoIP phone call.
C. Testing a constant conversation orhandset tone while roaming from area to area, or performing an active survey
D. Performingprotocol analysis with a single wireless adapter that is scanning all channels in use
正解：C
質問 7：
You are being interviewed by ABC Company for employment as a wireless site surveyexpert. The interviewing manager asks you what items should be included in a site survey report generated as part of a manual site survey process.
What answer would be accurate?
A. Documentation noting how each WLAN user group will authenticate to the network
B. RF heat map illustrating coverage and signal quality for each frequency band
C. Documentation proving proper entry of wall material types into the site survey software
D. Itemized list of equipment, licenses, and support contracts required forthe facility
正解：B
質問 8：
What answers correctly complete the following sentence?
____________ and ____________ carrier sensefunctions are used to determine if the wireless medium is busy. (Choose 2)
A. Interframe
B. Physical
C. Active
D. Backoff
E. Pseudo-random
F. Vector
G. Virtual
正解：B,G
質問 9：
In a single channel architecture (SCA) WLAN system, 802.11n (HT) APs should not share an SSID with 802.11g (ERP) APs.
What is the reason for this recommendation?
A. Client stations would see two different sets of AP capabilities as they roam between APs with the same BSSID.
B. The additional beacon material in 802.11n beacons wouldconfuse 802.11b/g client stations.
C. Beacons from 802.11n APs use 40 MHz channels, while beacons from 802.11g APs use
20 MHz channels.
D. The added range of 802.11n APs would cause additional co-channel interference.
正解：A
浅田** -
問題数も増えた感じで内容も充実している.
問題集を購入させていただきました。今回もいい結果が出そう。