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You work as a network administrator. Your company has two WLCs correctly configured for redundancy.
You used the default AP Fallback settings. Because of a power problem, the primary controller fails and
then the secondary controller takes over operation of the LWAPP APs.
Which action will be taken by the APs after restoring the power to the primary controller?
A. The APs will automatically rejoin the primary WLC. Because WLC redundancy is stateful, service to the APs will not be interrupted while they are rejoining the primary WLC.
B. The APs will remain joined to the secondary WLC until the network administrator manually forces them back to the primary WLC. During the process of forcing them back, service to the APs will be
C. The APs will automatically rejoin the primary WLC. While the APs are rejoining the primary WLC, service to them will be interrupted.
D. The APs will remain joined to the secondary WLC and the configuration will be updated (the secondary WLC will become the primary WLC, and the primary the secondary).
Correct Answer: C
Which four components are of CSMA/CA?
A. fragmentation, PCF, collision, backoff
B. carrier sense, DCF, acknowledgment frames, RTS/CTS medium reservation
C. fragmentation, PCF, acknowledgment frames, RTS/CTS medium reservation
D. carrier sense, collision, jam sequence, backoff
Correct Answer: B
Observe the following error message carefully: Error Message DOT11-TKIP_MIC_FAILURE_REPEATED: Two TKIP Michael MIC failures were detected within [number] seconds on [interface] interface. The interface will be put on MIC failure hold state for next [number] seconds Which option is correct about this error message?
A. Because MIC failures usually indicate an active attack on your network, the access point is throttled and put on hold for the configured time. Access by new stations is restricted until the timer expires.
B. Because MIC failures usually indicate an active attack on your network, the interface will be put on hold for the configured time. During this hold time, stations using TKIP ciphers are disassociated and cannot reassociate until the hold time ends. Once the hold time ends, the interface will begin to operate normally again. Certkey.com – Make You Succeed To Pass IT Exams Certkey 350-050
C. Because MIC failures usually indicate a passive attack on your network, the interface input queues are placed on hold for the configured time. During this hold time, all traffic is dropped until the hold timer expires. Once the hold time ends, the interface will begin to operate normally again.
D. Because MIC failures usually indicate a passive attack on your network, the interface MIB counter will be incremented. During hold time, stations using TKIP ciphers are still allowed to associate and establish authentication.
Correct Answer: B
Which two items are the purposes of a pre-site survey walkthrough? (Choose two.)
A. identify potential problem areas
B. define intended coverage areas
C. determine the final location of APs and antennas
D. identify sources of RF signal attenuation and RF interference
Correct Answer: AB
For the following statements, what are the key RF deployment guidelines for WLAN phones?
A. VoWLAN handsets should use static WEP, since it provides the fastest roam times and the security of VoWLAN calls is not a high priority.
B. Follow standard WLAN site survey procedures to minimize cell overlap and interference. In addition, ensure that the cell edge has a minimum power level of -67 dBm and an error rate less than 1%. The power level of the APs and the handset should match, and should also provide sufficient call capacity.
C. The RF deployment guidelines are the same as those for any other WLAN client: perform a site survey to ensure appropriate coverage for the required bit rate and minimize channel overlap.
D. Use patch antennas to provide higher gain and better coverage and use the highest power on the AP. This will ensure maximum coverage and minimize the number of dropped calls.
Correct Answer: B
Your company has just completed constructing a new automobile parts manufacturing facility. The facility IT manager would like to implement voice over WLAN. During your initial walkthrough, you see numerous highly reflective surfaces on the manufacturing equipment and in the building construction itself. What potential problem exists that should be accounted for during your site survey?
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A. RF signal absorption
B. multipath distortion
C. RF signal attenuation
D. Fresnel zone impedance
Correct Answer: B
Can you tell me which three of the following items are configurable settings on each SSID for the Cisco
802.11 Access Point High Speed WAN Interface Card? (Choose three.)
A. guest mode
B. quality of service
C. infrastructure SSID
D. maximum number of client associations
Correct Answer: ACD
How to connect the new bridge to the old antenna while installing an outdoor bridge which is replacing another vendor’s bridge?
A. FCC and ETSI regulations do not permit the connection of disparate systems without certification.
B. The 802.11 standard requires that all connectors be N-type connectors, so the bridge and antenna will interoperate with no changes.
C. The connectors are proprietary to the vendor, so using an adapter that is approved by the vendor would be necessary.
D. The connectors are proprietary to the vendor, so using an adapter available from either vendor would be necessary, but no regulatory approval is required.
Correct Answer: A
Dynamic Host Configuration Protocol (DHCP) is a protocol used by networked devices (clients) to obtain the parameters necessary for operation in an Internet Protocol network. While using an enterprise DHCP server to facilitate WLAN controller discovery by both Cisco Aironet 1000 Series and 1250 Series Lightweight Access Points, which two DHCP options could be supported by the DHCP server? (Choose two.)
A. Option 43
B. Option 48
C. Option 60
D. Option 82 Certkey.com – Make You Succeed To Pass IT Exams Certkey 350-050
Correct Answer: AC
Refer to the following options, which two are long-term solutions to hidden node problems? (Choose two.)
A. enable CTS to Self
B. change the RF situation by increasing the power on client work stations (None-AP-STA)
C. increase the radio speed to at least 24 Mb/s
D. change the RF situation by adding additional access points
Correct Answer: BD
According to FCC Rule # 15.407(h)(2), it is required that products operating in certain bands need to support Dynamic Frequency Selection to detect and automatically adjust channels to protect WLAN communications from interfering with military or weather radar systems. Which two 5-GHz bands must support Dynamic Frequency Selection? (Choose two.)
D. UNII-2 Extended
Correct Answer: CD
In order to provide end-to-end QoS, how to send traffic classification information between the LWAPP AP and the WLAN controller?
A. There is no end-to-end QoS, only WMM on the WLAN. This is all that is required, because campus networks typically have greater than 1 Gb/s backbones and WLANs operate at only 11 or 54 Mb/s.
B. LWAPP APs map the WMM CoS values of the client traffic to the Ethernet frames and the CoS value of the Ethernet frames sent to the AP to the WMM access category. The switch upstream from the AP is responsible for converting between 802.1D classification and DSCP.
C. The WMM CoS values are carried within the LWAPP tunnels and translated from CoS to DSCP to ensure that the correct priority is given to different LWAPP packets.
D. LWAPP packets from the controller and the AP are marked by DSCP based on the DSCP of the tunneled traffic. This DSCP is converted to a CoS by a table in the AP. The access category used for each frame depends on the table CoS and QoS profile of the WLAN.
Correct Answer: D
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