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Braindumps for "642-577" Exam

Cisco Wireless LAN for System Engineers (WLANSE)

 Question 1.
What are two functions of the WDS AP? (Choose two.)

A. to collect client and AP Radio Management data
B. to collect AP configurations to store on the WLSE
C. to allow more clients to get access through an AP
D. to cache security credentials to facilitate Fast Secure Roaming

Answer: A, D

Question 2.
How many different WEP keys will the client configure in each cell using Cisco's server-based authentication method?

A. 1
B. 2
C. 3
D. 4

Answer: B

Question 3.
You make changes to a specific page in the CLI. 

What command is use to activate those changes?

A. Save
B. Apply
C. Enable
D. Configure

Answer: B

Question 4.
Which two parameters are available on the Express Setup screen of the Access Point? (Choose two.)

A. SSID
B. data ****-
C. Role in Radio Network
D. ********-

Answer: A, C

Explanation:
The Express Setup page allows the configuration of the AP's basic parameters. These parameters may be set for either of the AP's radio interfaces:
1) SSID: Configure the primary SSID for use on the specified radio interface
2) Broadcast SSID in Beacon: Set Yes to send SSID in AP's beacon information, which permits association by "guest" users
3) Role in Radio Network: Set AP for either Root or Repeater.
4) Optimize Radio Network for: AP's data rates ma be set to send broadcast packets at more data rates for "Range" or less data rates for " Throughput". Data rates permitted may also be explicitly configured via "Custom" link
5) Aironet Extensions: Enabled or Disabled. Aironet extensions permit function of Cisco client's specific features such as roaming/ load-balancing and security features such as Cisco TKIP and MIC.

Reference:
Aironet Wireless LAN Fundamentals p. 8-11

Question 5.
Which three statements are true about 802.11g WLANs? (Choose three.)

A. 802.11g devices are backward compatible to 802.11a devices.
B. 802.11g devices are backward compatible to 802.11b devices.
C. The modulation for 54 Mb is identical to 802.11a modulation 54 Mbps.
D. The special bandwidth is identical to the bandwidth of 802.11b spectral bandwidth.

Answer: B, C, D

Explanation:
The 802.11g standard has been in draft form since November 2001 and is likely to be finalized until 2003. 802.11g will deliver the same 54 Mbps maximum data rate as 802.11a, yet it offers an additional and compelling advantage - backward compatibility with 802.11b equipment. This means that 802.11b client cards will work with 802.11g access points, and 802.11g client cards will work with 802.11b access points. Because 802.11g and 802.11b operate in the same 2.4 GHz unlicensed band, migrating to 802.11g will be an affordable choice for organizations with existing 802.11b wireless infrastructures. It should be noted that 802.11b products cannot be "software upgraded" to 802.11g because 802.11g radios will use a different chipset than 802.11b in order to deliver the higher data rate. However, much like Ethernet and Fast Ethernet, 802.11g products can be commingled with 802.11b products in the same network. Because 802.11g operate in the same unlicensed band as 802.11b, it shares the same three channels, which can limit wireless capacity and scalability.

Question 6.
When using a multiple WEP key approach to security, transmission number is placed in what part of the 802.11 data packet?

A. header
B. trailer
C. Initialization Vector (IV)
D. Payload of the pocket

Answer: A

Explanation:
The reason the order of the keys must match is because a transmit key will have to be chosen. When sending encrypted data, the client (or access point) will use the transmit key to encrypt access point (or client) know which key to use to decrypt the packet. 

Reference:
AWFL p.9-38

Question 7.
Which two can be used to access the CLI screens on an Access Point?
(Choose two.)

A. IPSU
B. console port
C. telnet session
D. browser window

Answer: B, C

Explanation:
To connect to the Access point you can use:
1) Console port
- Requires roll-over cable
2) Telnet
- Requires an IP address
3) Web Browser
Requires an IP address
Preferred connection

Reference:
Aironet Wireless LAN Fundamentals p.8-7

Question 8.
The designator dBm s a decibel referenced to a (n) _______ radiator.

Answer: milliwatt

Explanation:
A signal strength or power level.0dBmis defined as 1mW (milli Watt) of power into a terminating load such as an antenna or power meter. Small signals are negative numbers (3.g. 83dBm).

Reference:
Aironet Wireless LANFundametalsp.6-3

Question 9.
Access Point10 in root mode (SSID = '123') provides connection to repeat Access Point20 (SSID = '123'). If Access Point10 is using Channel 1, what channel will Access Pint20 use?

A. Channel 1
B. Channel 6
C. Any channel except Channel 1
D. Channel is not a concern in this application

Answer: A

Question 10.
What information is needed when using the IP Setup Utility (IPSU) to determine the IP address of a static Access Point?

A. DNS name of the Access Point
B. MAC address of the Access Point
C. serial number of the Access Point
D. the switch and switch port it is attached to

Answer: B

Question 11.
Which two statements are true when the gain of an omni-directional antenna increases? 
(Choose two.)

A. The coverage distance increases.
B. The coverage distance decreases.
C. The coverage increases directly above and below the antenna.
D. The coverage decreases directly above the below the antenna.

Answer: A, D

Explanation:
Multi-rate Implementation
Bandwidth requirements factor into coverage mappings, since the distance from an access point affects the available bandwidth. The above example provides for seamless roaming, but not at a constant speed. To take advantage of the multi-rate technology a client can step down in bandwidth in order to gain greater coverage distances with a single access point. On the other hand, if 11 Mbps is required everywhere, the access point would need to be relocated so that ONLY the 11 Mbps circles were touching each other. This would require a greater amount of access points but consistent bandwidth would be achieved. 

Notice that the data rate decreases as the coverage distance increases.

Reference:
Aironet Wireless LAN Fundamentals p. 3-18.

Question 12.
You have a two cell configuration. One cell's Access Point is configured utilizing channels. 
What is the best channel selection for the second cell's Access Point.

A. Channel 4
B. Channel 8
C. Channel 9
D. Channel 11

Answer: D

Question 13.
How can you discover an IP address for a given Access Point?
(Choose three.)

A. CDP
B. IPSU
C. telnet
D. browser
E. through the console port

Answer: A, B, E

Explanation:
To set an IP address:
1) Use DHCP
2) Use IPSU
3) Set using Console port

Question 14.
In adhoc mode, the Cisco Aironet wireless PCMCIA client can talk to which two devices 
(Choose two.)

A. Cisco Aironet Access Points
B. Cisco Aironet PCI wireless adapter
C. Cisco Aironet PCMCIA wireless adapter
D. Cisco Aironet Workgroup Bridge (WGB)

Answer: B, C

Question 15.
What components must be configured to enable World mode in a WLAN system?
(Choose two.)

A. Cisco router
B. Cisco switch
C. Non-Cisco router
D. Non-Cisco switch
E. Cisco Access Point
F. Cisco wireless client

Answer: E, F

Question 16.
Exhibit: 
***MISSING***
On the Access Point Radio Hardware page shown in the exhibit, which option enables the Access point to attach its Channel Set information to the beacon packets?

A. Beacon Period (Kusec)
B. Data Beacon Rate (DTIM)
C. Allow "Broadcast" SSID to associate?
D. Enable "World Mode" multi-domain operation

Answer: D

Explanation:
Enable World Mode: When you select yes from the world-mode pull-down menu, the access point adds channel carrier set information to its beacon. Client devices with world mode enabled receive the carrier set information and adjust their settings automatically.

Question 17.
What are two benefits that the Cisco Aironet 1400 Series Bridge provides?
(Choose two.)

A. reduced cost to T1/E1
B. similar speed to T1/E1
C. superior speed to T1/E1
D. ability to terminate a serial WAN connection

Answer: A, C

Explanation:
The Cisco Aironet 1400 Series Wireless Bridge provides a high-performance and feature rich solution for connecting multiple LANs in a metropolitan area. Designed to be a cost effective alternative to leased lines, it is engineered specifically for harsh outdoor environments, yet also works well in indoor deployments. The Cisco Aironet 1400 Series Wireless Bridge is the premier high-speed, high-performance outdoor bridging solution for line-of-sight applications.

Question 18.
350 series Access Points programmed with U.S. channel sets have the option to reduce the power output to control the area of coverage power settings are 100mW, 50mW, 30mW, and 1mW. How will this allow the Access Points to be very scalable? (Choose two.)

A. The receiver sensitivity decreases.
B. The receiver sensitivity increases.
C. You can create smaller coverage patterns.
D. While covering the same floor, you can increase the ratio of Access Point to clients when it is 
    at 1mW rather than to 100mW.

Answer: C, D

Question 19.
If a root Access Point is set at channel 6, which channel will a repeater Access Point use to associate to it?

A. Channel 6
B. Any channel
C. Any other non-overlapping channel
D. It depends on the SSID.

Answer: A

Question 20.
What is the EIRP of a system using two Cisco Aironet 3 Series pre- programmed with ETSI channel sets and 1 mW, running at 5.5 Mb with 21 dBi dish antennas and 100 ft of standard Aironet?

A. 11 dBm
B. 14.3 dBm
C. 15.3 dBm
D. 21 dBm

Answer: B


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Braindumps for "642-132" Exam

Leading Virtual Classroom Instruction

 Question 1.
Why is it beneficial for virtual classroom instructions to know approximately how much time each lesson within a virtual classroom session take?

A. Knowing how much time a lesson takes allows the instructor to adjust timelines if the 
    participants want to go deeper or need more time.
B. Participants will pay better attention because there will be less time to review.
C. The timing of each lesson can help participants understand the relative importance of each 
    instructional section.
D. The instructor can manage time by stopping discussions demonstrate and comments before 
    the participants are finished.
E. Making effective timing decisions demonstrates leadership in the virtual classroom.

Answer: A

Explanation:

Question 2.
Which three preparation tasks help create an effective audio environment for a virtual classroom session? (Choose three)

A. Use only a wireless internet connection.
B. Know how to make your phone.
C. Work in a space that is free of background noise.
D. Hold session in the early morning.
E. Put a “trainingin Progress” sign on your door or desk.
F. Use an unidirectional microphone

Answer: C, E, F

Explanation:

Question 3.
Why is it important for evaluation strategies to be highly specific?

A. Virtual instructors might rationalize or make excuse for unmet learning objectives.
B. Different stakeholders in organization often have competing properties and agendas.
C. Management might reward or punish depending on post session behavior on the job.
D. It is important to be factual about what went well, what needs important, and how it will be 
    improved.

Answer: D

Explanation:

Question 4.
Which action is most effective if you want to gauge the ability of the group to use formulas during a virtual classroom session in Microsoft Excel slide?

A. Share your application, using an expense report template; demonstrate how to input formulas 
    in an Excel spread sheet.
B. Share your application, select a cell and type the first part of formula; ask participants to type 
     the rest into chat.
C. Call on aparticipantand ask that person to verbally state what the correct formula would be; 
    given a specific set of criteria
D. Pass control of your desktop to a participant and ask that person to type in the correct formula; 
    ask the group to continue.

Answer: B

Explanation:

Question 5.
What is a key consideration for deciding whether you should record a virtual classroom session?

A. Session recordings that are posted to a company intranet may be subject to attribute laws.
B. Participants may demand to know in advance what you plan to do with the recording.
C. Conflicts about confidentially may cause participants to be less interactive.
D. Participants may be distracted by concerns about what their recorded voice like.

Answer: A

Explanation:

Question 6.
What are two industry best practices for timing of virtual classroom sessions? (Choose two)

A. Spend at least 5 minutes on each slide to allow cognitive load.
B. Sessions should be approximately 60 to 90 minutes in length.
C. Twenty percent of your slides should contain 80 percent of the information in the session.
D. Add 5 minutes to the agenda for every five participants that are attending your session.
E. Ensure that interactivity occurs every 5 minutes on average.

Answer: B

Explanation: Correct answer: AE

Question 7.
Which three questions are the most appropriate to ask if your manager asks you to coordinate and schedule a virtual session that you message will conduct next week on strategic planning? (Choose three)

A. Do you want participants to be able to interact with you and each other, and if so, how?
B. Are your slides ready, and are they optimally designed (for example, following the six by    
    sixrule)?
C. Will session attendance be mandatory or optional for participants?
D. Approximately how many participants will be attending, and from where?
E. Do the various activities support the learning objectives of the session?
F. How will the learning gains or effectiveness of the session be measured?
G. Is an LMS adequate for the needs of our company, or do we need an LCMS?

Answer: E, F, G

Explanation:

Question 8.
What are two key reasons why you should record and critique your own presentation on to two days before facilitating an important training session? (Choose two)

A. To ensure that your communication is as clear and succinct as possible.
B. To consider two creative ways to adapt the course to an asynchronous format.
C. To become self-aware of any use of slang or colloquialisms if the session is for a global 
    audience.
D. To determine whether the course needs to be redesigned for a global audience.
E. To show program stakeholders exactly what you will be doing.

Answer: A, B

Explanation:

Question 9.
How does the use of virtual cueing devices (such as using a highlighter tool or partner) support the process of logic and learning?

A. Paves the way for social learning.
B. Helps focus attentionon relevant content areas
C. Promotes discussion and collaboration
D. Engages auditory and less-visual learners

Answer: D

Explanation:

Question 10.
What are three appropriate reasons for asking open-ended questions? (Choose three)

A. Initiate discussion
B. Uncover experiences of participants
C. Resolve conflict
D. Stimulate critical thinking
E. Challenge viewpoints
F. Identify dominant participants

Answer: C, D, E

Explanation:



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