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Exam
: Cisco 642-577
Title
: Wireless LAN for System
Engineers
Version : Demo
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1. In the U.S., no licensing is required for which four RF bands? (Choose four.)
A. 902-928 MHz
B. 800-820 MHz
C. 2.400-2.483 GHz
D. 2.500-2.600 GHz
E. 5.150-5.350 GHz
F. 5.725-5.825 GHz
Answer: ACEF
2. What is the relationship between data rate and cell size (coverage area)?
A. The highest data rate has the largest cell size.
B. The lowest data rate has the smallest cell size.
C. The highest data rate has the smallest cell size.
D. Only the transmit power and antenna gain control the cell size not the data rate.
Answer: C
3. The typical antenna for a root bridge in a multipoint deployment is a(n) _____.
A. Yagi antenna
B. Sector antenna
C. Parabolic dish antenna
D. Omni-directional antenna
Answer: D
4. A customer has a current site with an omni-directional antenna. It has 50 ft. of cabling that they are
increasing to 100 ft.This change in cabling could _____.
A. increase the data rate
B. increase the coverage area
C. decrease the coverage area
D. decrease the angle of radiation from the antenna
Answer: C
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5. The WLSE Cisco Aironet Conversion Tool allows the administrator to _____.
A. store base AP configuration
B. convert VxWorks APs to IOS
C. store base client configuration
D. convert APs to either VxWorks or IOS
Answer: B
6. A community wants to give officers access to the station house's server when they are on the road to
view police records, which could help avert potential deadly and threatening individuals. The design has
several bridges distributed throughout the city to provide coverage in every area of the city.What antenna
would be most appropriate on the police cruiser?
A. an omni-directional antenna
B. a directional antenna (Yagi