Which of the following are disadvantages of a wireless LAN in comparison to a wired LAN?
Answer(s): A
As with any relatively new technology, there are many issues that affect implementation and utilization of wireless networks. There are both common and specific issues depending on the type of wireless network. Some of the common factors include electromagnetic interference and physical obstacles that limit coverage of wireless networks, while others are more specific, such as standards, data security, throughput, ease of use, etc.
What type of modulation is used for 2Mbps FHSS?
It can be seen from the table that 2 Mbps FHSS uses the GFSK Modulation Technology.
CWNA Official Study Guide, Page 214
The measure of 100 mW of power is equivalent to which of the following units of measure?
It can be seen from the graph that +20dBm means 100mW of Power
CWNA Official Study Guide, Page 33
Which of the following link speeds are supported by the IEEE 802.11b standard?
Answer(s): A,B,C,D
IEEE 802.11b devices operating at 5.5 or 11 Mbps are able to communicate with 802.11 devices operating at 1 or 2 Mbps because the 802.11b standard provides for backward compatibility. Users employing 802.11 devices do not need to upgrade their entire wireless LAN in orderto use 802.11b devices on their network.
CWNA Official Study Guide, Page 55
Which of the following items are needed to perform a site survey?
Answer(s): D
During most surveys scratch paper, grid paper, and copies of blueprints or floor plans are necessary. When added to the amount of equipment that will be carried around, this amount of paper and documentation tends to become a burden. For this reason, a sufficiently large mobile equipment cart that can contain all the necessary gear is quite useful while moving through a facility.
CWNA Official Study Guide, Page 312
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