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Exam Code: 640-911
Exam Name: Introducing Cisco Data Center Networking
Q&As: 208
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Cisco Exam Pass4itsure 640-911 Dumps Exam Blog Series:
QUESTION 18
Which of the following notations can be used when creating a Drive Mapping in RES Workspace
Manager?
1. Http://to a WebDAV folder
2. Https:// to a WebDAV folder
3. Local path to a folder
4. UNC path to a shared folder
A. 4 only
B. 3 and 4 only
C. 1, 2 and 4 only
D. 1, 2, 3 and 4
640-911 exam Correct Answer: C
QUESTION 19
You want to protect your Relay Server against unauthorized Agent connections. How can that be done?A. Configure an Administrative Role without access to the Relay Servers.
B. Enforce protocol encryption between the Relay Server and the Agents.
C. Configure an environment password for the Relay Servers.
D. Create a Scope without access to the Relay Servers.
Correct Answer: C
QUESTION 20
Which Access Control criteria can be used restrict Workspace Contains?
1. User/Group
2. Directory Services
3. Client Name
4. Language
A. 1 and 2
B. 1 and 4
C. 2 and 3
D. 2 and 4
640-911 dumps Correct Answer: B
QUESTION 21
How can an administrator automatically add an RES Workspace Manager Agent to a specific workspace?
A. Use the MSI parameter ADDTOWORKSPACE when installing the Agent.
B. Use RES Automation Manager.
C. Select the option `Use as default workspace' in the RES Workspace Manager console.
D. Edit the config.xml file.
Correct Answer: A
QUESTION 22
Which of the following tasks are performed by the RES Workspace Manager Agent Service?
1. Checking Datastore connectivity
2. Unlocking and locking the User Registry
3. Handle license requests
A. Only 1
B. 1 and 2
C. 2 and 3
D. 1, 2 and 3
640-911 pdf Correct Answer: D
QUESTION 23
Which log shows if the environment is sized correctly to handle session starts without exceeding the
configured maximum number of simultaneous logons?
A. CPU Optimization Log
B. Access Balancing Log
C. Session Log
D. Global Error log
Correct Answer: B
QUESTION 24
You want to display a series of elements. Which choice demonstrates the correct syntax for an array in
JavaScript?
A. var myArray = Array(1,2,3,4,5)for (var i = 0; i < myArray.[i]; i++ ){document.write( myArray[i] + "<br />" );
B. var myArray = new Array(1,2,3,4,5)for (var i = 0; i < myArray.length ; i++ ) {document.write( myArray[i]
+ "<br />" );
C. var myArray = new Array(1,2,3,4,5)for (var i = 1; i < myArray.length; i-- ) {document.write
( myArray.length + "<br />" );
D. var myArray = Array(1,2,3,4,5)for (var i = 1; i < myArray.[i] ; i-- ){document.write( myArray[i] + "<br />" );
640-911 vce Correct Answer: B
QUESTION 25
ABC Company has a 2.4 and 5 GHz WLAN deployment supporting four bands in the 5 GHz range (UNII 1,
UNII 2, UNII 2e, and UNII 3). DFS functionality is enabled as required by the regulatory domain. 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 user roams throughout the building. All APs have 2.4 and 5 GHz radios
enabled.
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
in UNII 1.
B. 5 GHz frequencies offer better RF penetration than 2.4 GHz, but 2.4 GHz offers more voice call
capacity and lower latency than 5 GHz.
C. The voice client does not support DFS, and therefore experiences some 5 GHz coverage holes as it
moves through the network.D. The client's band selection algorithm prefers 5 GHz, but band steering behavior usually steers 75- 85%
of client devices to 2.4 GHz.
Correct Answer: C
QUESTION 26
Given:
You were previously on-site at ABC's facility to conduct a pre-deployment RF site survey. The WLAN has
been deployed according to your recommendations and you are on-site again to perform a network
validation.
When performing this type of post-deployment RF site survey for VoWiFi, what are two steps that must be
performed? (Choose two)
A. Coverage analysis to verify appropriate coverage and roaming boundaries
B. Spectrum analysis to locate and identify RF interference sources
C. Hidden node analysis to identify and relocate existing hidden nodes
D. Protocol analysis to discover channel use on neighboring APs
E. Application analysis with an active phone call on a VoWiFi handset
640-911 exam Correct Answer: AE
QUESTION 27
Given: 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. SNMP
B. VRRP
C. RBAC
D. IPSec
E. WIPS
F. WPA2
Correct Answer: C
QUESTION 28
As a consultant, you've been hired by XYZ Company to provide recommendations about client device
selection, operation, and interoperability. What information should be considered to help them choose the
right WLAN client devices?
A. 802.11n OFDM is more susceptible to high-power, narrowband interference than 802.11a OFDM.
B. In order to earn Wi-Fi Alliance certification, 802.11n clients stations are required to support both 2.4
and 5 GHz frequencies
C. 802.11a/g devices may support WMM, but all 802.11n devices are required to support WMM.
D. An 802.11g/n AP that is configured to support only OFDM data rates will allow HR/DSSS devices to
associate.
E. When HR/DSSS devices are present, HT MCS rates are disabled for the entire BSS.
640-911 dumps Correct Answer: C
QUESTION 29
Given: ABC Hospital is planning a Wi-Fi infrastructure upgrade where the 802.11b/g APs would be
replaced with new dual-radio HT (802.11n) APs. ABC wants to minimize the time and cost associated with
performing a new site survey, so they will be mounting all of the new APs in the same locations and with
the same cable drops as the existing APs.What is one performance drawback with this deployment method?
A. Multipath will increase, causing excessive layer-2 retransmissions. The retransmissions will cause
latency for VoWiFi handsets.
B. Increased receiver sensitivity on the HT APs will cause them to continually change channels to avoid
co-channel interference.
C. If the existing UTP cabling is not Category 6 or better, the total Ethernet backhaul for each AP will be
limited to 100 Mbps.
D. In locations with line-of-sight to client devices and little multipath, the benefits of MIMO may be less
significant than in other areas.
Correct Answer: D
QUESTION 30
Given: 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 added range of 802.11n APs would cause additional co-channel interference.
C. The additional beacon material in 802.11n beacons would confuse 802.11b/g client stations.
D. Beacons from 802.11n APs use 40 MHz channels, while beacons from 802.11g APs use 20 MHz
channels.
640-911 pdf Correct Answer: A
QUESTION 31
Which unit of measurement is a relative unit that is used to quantify power level changes?
A. dBm
B. dBW
C. dB
D. mW
E. VSWR
Correct Answer: C
QUESTION 32
Given: Return Loss is the decrease of forward energy in a system when some of the power is being
reflected back toward the transmitter.
What causes high return loss in an RF transmission system?
A. A Voltage Standing Wave Ratio (VSWR) of 1:1
B. An impedance mismatch between devices in the RF system
C. Cross-polarization of the RF signal as it passes through the RF system
D. The use of different connector types in the RF system (e.g. N-type and SMA-type)
E. Low output power at the transmitter and use of a high-gain antenna
640-911 vce Correct Answer: B
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