What stream cipher is used for encryption as part of WEP?
Answer(s): B
Wired Equivalent Privacy (WEP) was intended to provide the same level of privacy over wireless networks that one would expect from wired networks. WEP is part of the IEEE 802.11 standard document, and defines how encryption must support the authentication, integrity, and confidentiality of packets transmitted using wireless equipment. The IEEE standards committee chose to use RC4, a proven encryption algorithm, for wireless security. All wireless vendors support 802.11.
The measure of 1 mW of power is equivalent to which of the following logarithmic units of measure?
Answer(s): D
For absolute measurements, the reference power P2 is defined at 1 milliwatt, hence dBm, and 0 dBm = 1 mW:dBmPower unit mWpower unit dBmPower unit mWpower unt+20 100 mW -30 1 µW+10 10 mW -40 100 nW0 1 mW -50 10 nW-10 100 µW -60 1 nW-20 10 µW -70 100 pW
Which of the following statement indicates a key principle of RF propagation and communication?
Earth Bulge is a factor when planning wireless data transmission paths longer than what length?
The ESTeem Model 192E is a IEEE 802.11b compatible wireless LAN transceiver that can used to build a Wireless Local Area Network (WLAN) for line-of-sight distances to 7 miles for fixed base and mobile applications.Earth bulge must be calculated into tower height for radio links greater than 7 miles.
CWNA official Study Guide, Pg. 352
What is the maximum transmit power of a 2.4 GHz ISM band radio in point-to-multipoint configuration as specified by FCC regulations?
Answer(s): C
At Intentional Radiator Power limit = 1 watt= + 30 dBmAt EORP Power limit = 4 Watts = + 36 dBmFrom the answers given if power is at the Intentional Radiator then the answer is C.Pg 215 in CWNA User Guide 2nd edition
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