Cisco 642-577

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QUESTION 108
Which two cables are used to connect a network device to the RJ 45 port of the Power Injector for the 1400 SeriesWirelessBridge? (Choose two)
A. cross over
B. coaxial cable
C. straight through
D. Cisco serial console port cable

Correct Answer: AC Section: (none) Explanation
QUESTION 109
The typical antenna for a root bridge in a multipoint deployment isa(n) ______.

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QUESTION 71
A directional antenna focuses the RF signal more in one direction than others, thus decreasing the range more in that direction.(True or false?)
A. True
B. False
C. This is not always true must be judged case by case

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 72
In an ETSI regulated country, how many channelsare available in the 2.4 GHz band?

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QUESTION 95
Which IEEE 802.11 task group is responsible for the development of WLAN security standards?
A. 802.11d
B. 802.11e
C. 802.11f
D. 802.11i

Correct Answer: D Section: (none) Explanation
Explanation/Reference:
QUESTION 96
The anomaly that occurs when RF signals bounce off of objects and are received out of phase at the receiver is often referred to as_____.

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QUESTION 51
What is the maximum number of wired clients that can send packets through the WGB342 to an Access point?
A. 4
B. 6
C. 8
D. 12
E. unlimited

Correct Answer: C Section: (none) Explanation
Explanation/Reference:
Explanation: The CiscoAironetWorkgroup Bridge (WGB) product connects to the Ethernet port of a device that does not have a PCI or PCMCIA slot available. It provides a single MAC address connection into an access point, and onto the LAN backbone. It cannot be used in a peertopeer mode connection, and must communicate to a CiscoAironetAccess Point orCiscoAironetBridgein access point mode. The CiscoAironetWGB will not operate with othervendorsaccess points. Another configuration of theWorkgroupBridgewill allow up to 8 wired machines to be attached to the same radio device. It is ideal for connecting remote workgroups to a wired LAN. Inorederto use a WGB with multiple MAC addresses, the WGB must be connected to a hub. All users must connect to the hub. The unit will automatically select the first 8 MAC addresses it hears on the Ethernet, or
the addresses may be entered manually into a table. The 8 MAC addresses are static.

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QUESTION 50
What is the EIRP of a system using two Cisco Aironet 350 Series Bridges programmed with ETSI channel sets and 1 mW, running at 5.5 Mb with 21 dBi dish antennas and 100 ft of standard Aironet cable?
A. 11 dBm
B. 14.3 dBm
C. 15.3 dBm
D. 21 dBm

Correct Answer: B Section: (none) Explanation
Explanation/Reference:
QUESTION 51
Fast Secure Roaming improves total latency time associated with the roam from >500 msto _____.

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