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Each of the following is a wireless modulation scheme used in IEEE WLANs except
Because of its vulnerability to interference, _____ transmissions are not used for WLAN networks.
_____ transmissions take a narrow, weaker signal and spread it over a broader portion of the radio frequency band.
The amount of time that a transmission occurs on a specific frequency is called the
The bit pattern used in a WLAN direct sequence spread spectrum transmission is called the
FHSS transmissions are less prone to interference from outside signals than DSSS. True or False?
DSSS has the potential for greater transmission speeds over FHSS. True or False?
Orthogonal frequency division multiplexing (OFDM) splits a signal low-speed digital signal into several faster signals running in parallel. True or False?
IEEE has subdivided the Physical layer for WLANs into six sublayers. True or False?
The Physical Medium Dependent (PMD) sublayer includes the standards for both the characteristics of the wireless medium (such as DSSS or FHSS) and defines the method for transmitting and receiving data through that medium. True or False?
_____ is original IEEE WLAN standard introduced in 1997.
The Physical Layer Convergence Procedure (PLCP) standards for 802.11b are based on _____.
One of the disadvantages of an 802.11b network is the PLCP frame preamble and header are always transmitted at _____ Mbps.
The 802.11b standard uses the ___band at 2.4 GHz for its transmissions.
IEEE 802.11a uses the unlicensed band known as the _____.
Explain why any network operating system or LAN application will run on an IEEE WLAN without modification.
What are the disadvantages to using U-NII?
What is Forward Error Correction (FEC) and how does it work with 802.11a networks?
What is turbo mode in an IEEE 802.11a network?
What are two...