101.
UNIT 3
Which one of the IEEE 802 committees is tasked with the development of security
standards?
A.802.10
B.802.16
C.802.15
D.802.11
102. __________ Coordination Function is a mandatory part of the MAC function in 802.11 and
it operates much like the CSMA/CA protocol.
A.Distrubuted
B.Navigation
C.Point
D.Data
103. __________ scanning allows a wireless NIC to connect to an access point without needing
to wait for a beacon from the access points within its range.
A.Active
B.Network
C.Frame
D.Passive
104. In __________ authentication, the access point authenticates any device with the correct
Service Set Identifier (SSID).
A.Open Systems
B.Wi-Fi Protected Access
C.Shared-Key
D.Public Encryption Key
105. The __________ task group is currently defining security improvements for the 802.11x
wireless standards.
A.802.11i
B.802.11g
C.802.11b
D.802.11s
106. __________ is a modulation method that varies the phase of the transmitted signal.
A.Phase-Shift Key
B.Signal-Shift Modulation
C.Frequency-Shift Key
D.Mac Modulation
107. Which of the following angle is not an available angle for the four-phase modulation?
A.135
B.90
C.0
D.180
108. Which one of the following is not an example of RF modulation?
A.Wave modulation
B.Phase modulation
C.Frequency modulation
D.Amplitude modulation
109. In infrastructure mode, all the wireless stations on the WLAN communicate directly and
only with an access point to create a __________ Service Set.
A.Basic
B.Ethernet
C.Extended
D.Independent Basic
110. IEEE 802.11b ad-hoc networks are formed on an __________ Service Set or the equivalent
of a peer-to-peer wireless network.
A.Independent Basic
B.Ethernet
C.Basic
D.Extended
111. __________ divides a 20 MHz RF channel into 48 narrowband sub-channels, and then
splits a data signal into 48 separate carriers, one on each subchannel.
A.OFDM
B.QAM
C.PMD
D.FDM
112. __________ diffusion is a transmission method that bounces IR light beams off of ceilings
and walls to support connectivity within a single room or small office.
A.Optical
B.Waveform
C.Direct
D.Multipath
113. The __________ frequencies of IR transmissions aren't susceptible to RF interference.
A.THz
B.MHz
C.KHz
D.GHz
114. What is the acronym used for a network that provides a communication connection between
devices in a home?
A.HAN
B.AIR
C.PAN
D.POS
115. What is the RF communications standard that can organize up to 8 devices into a
piconet?What is the RF communications standard that can organize up to 8 devices into a
piconet?
A.Bluetooth
B.UWB
C.ZigBee
D.IrDA
116. Which of the IEEE 802 standards defines the technologies used to form and manage
personal area networks?
A.802.15
B.802.16
C.802.11
D.802.3
117. Which of the following acronyms is used in reference to a personal area network that
employs wireless communications technology?
A.WPAN
B.WLCT
C.WPER
D.WRAN
118. Which of the following is Bluetooth's Physical layer?
A.Baseband
B.Broadband
C.Wideband
D.Ultra wideband
119. Which Bluetooth protocol performs link setup, authentication, link configuration, and the
discovery of other Bluetooth devices?
A.LMP
B.L2CAP
C.Radio
D.SIG
120. Which Layer 2 Bluetooth protocol that provides connection-oriented and connectionless
data services?
A.L2CAP
B.LMP
C.MAC
D.PHY
121. What ad-hoc logical structure does Bluetooth form with less than 8 Bluetooth devices?
A.Piconet
B.Scatternet
C.Supernet
D.Micronet
122. What ad-hoc logical structure does Bluetooth form when more than 8 Bluetooth devices are
present within the range of a master device?
A.Multiple piconets organized into a scatternet
B.Multiple scatternets organized into a piconet
C.Multiple scatternets
D.Multiple piconets
123. A __________ is a communications network that connects computing and other devices in
the immediate vicinity of an individual to support the activities of that individual.
A.PAN
B.LAN
C.HAN
D.WAN
124. What is the space normally associated with a wireless personal area network (WPAN)?
A.Personal operating space
B.Single building or home
C.Enclosed room
D.Desktop
125. _________ is a RF-communications standard used to form ad-hoc PANs within a 10-meter
range.
A.Bluetooth
B.IrDA
C.IR
D.ZigBee
126. Which one of the following companies was not an original Bluetooth SIG member?
A.Hewlett-Packard
B.IBM
C.Ericsson
D.Nokia
127. Bluetooth is implemented in a device as an integrated microprocessor module, referred to as
a __________ module.
A.Application
B.Remote
C.Hardware
D.Telechip
128. The __________ layer of the Bluetooth specification defines the operations of the Bluetooth
transceiver operating in the 2.4 GHz ISM band.
A.Radio
B.Logical link
C.Logical management
D.Baseband
129. __________ transmitters are generally accepted as the default transmitter standard for most
Bluetooth products.
A.Class 2
B.Class 3
C.Class 4
D.Class 1
130. An ad-hoc Bluetooth network is called a __________, which can include up to eight
Bluetooth devices, regardless of the device type or its Bluetooth application.
A.Piconet
B.Octanet
C.Micronet
D.Scatternet
131. A Bluetooth device cannot act as a __________ for two piconets.
A.Master
B.Slave
C.Transmitter
D.Frequency-hopper
132. A Bluetooth scatternet is formed when two or up to __________ piconets are connected
through one or more common devices.
A.10
B.6
C.8
D.4
133. One of the methods of establishing an association between two Bluetooth devices is a
process called __________.
A.Pairing
B.Linking
C.Finding
D.Sharing
134. __________ involves sending messages from a Bluetooth device to any other nearby
Bluetooth devices, surprising the recipient.
A.Bluejacking
B.Toothing
C.Instant Messaging
D.Pairing
135. A Hands-Free Bluetooth Profile defines the means for the remote control and __________
connections of hands-free devices, such as a cell phone connected to a Bluetooth in-car kit.
A.Voice
B.IR
C.Data
D.Wireless
136. SIM is an acronym for Subscriber __________ Module (SIM).
A.Identification
B.Internet
C.Intercom
D.Intelligence
137. Bluetooth v2.1 specifies data transfer rates of up to __________.
A.3 Mbps
B.1 Mbps
C.5 Mbps
D.11 Mbps
138. A __________ involves several computing and peripheral devices that are able to
communicate to form a single ad hoc system.
A.WPAN
B.WLAN
C.WMAN
D.Wi-Fi
139. IEEE's 802.15 body establishes standards for __________.
A.WPAN
B.Broadband
C.Baseband
D.WLAN
140. The use of Ultra wideband (UWB) technology for WPANs is specified under the
__________ standards.
A.802.15.3
B.802.15.1
C.802.15.4
D.802.15.2
141. Which of the following is a type of wireless network interference that can originate from a
nearby radio wave transmitter?R
A.RFI
B.EMI
C.Crosstalk
D.SNR
142. What is the primary purpose for conducting a site survey?
A.To ensure that a WLAN design provides sufficient signal strength and bandwidth to planned
stationary or mobile nodes.
B.To perform acceptance testing on a new WLAN installation.
C.To qualify a particular part of the interior or exterior of a facility as a possible site for a
WLAN.
D.To verify an existing WLAN meets the requirements for connecting to a WWAN.
143. Which of the following can cause interference in an RF transmission?
A.All of the above
B.Metal box
C.Humans
D.Walls, floors, ceiling
144. When planning a WLAN, what characteristic addresses the number of nodes supported by
each access point and the bandwidth of the WLAN?
A.Capacity
B.Coverage
C.Depth
D.Toplogy
145. When planning a WLAN, what characteristic addresses the range and signal strength of the
transmitted signal of the WLAN?
A.Coverage
B.Depth
C.Topology
D.Capacity
146. What term is used to designate the nodes in an ad-hoc network?What term is used to
designate the nodes in an ad-hoc network?
Independent
basic service set
A.
B.Basic service set
C.Extended service set
D.Extended basic service set
147. What type of interference is emitted by nearby electrical motors, appliances, or faulty
connections?
A.EMI
B.SNR
C.RFI
D.Crosstalk
148. What is the WLAN topology in use on a network with more than one access point?
A.Extended service set
B.Basic service set
C.Independent basic service set
D.Extended basic service set
149. What is the receive signal strength indicator used to measure?
A.The strongest signal on a particular channel at a specific location.
B.The weakest signal on any channel within the range of an access point.
C.The channel which the least signal to noise ratio.
D.The SSID of the access point with the strongest signal.
150. What is the measurement used to indicate the amount of interference to a particular
location?
A.SNR
B.RFI
C.EMI
D.Crosstalk