cis 513 week 11 final exam

8/20/2019 CIS 513 Week 11 Final Exam

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CIS 513 Week 11 Final Exam – Strayer New

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Cha)ter" 5 Thro!/h 0

Cha)ter 5 . Wirele"" er"onal #rea Network"

T2E+F#LSE

1. WPAN technologies are designed to connect devices that are typically up to 10 meters

apart.

2. One of the advantages of WPAN technologies is their conservative use of battery

power.

. !he first step in the "luetooth pairing process is the paging procedure.

#. A reduced$function device can only connect to one full$function device on the

networ%.

&. "luetooth uses a challenge$response strategy for device authentication.

'2LTILE COICE

1. Which of the following is NO! a li%ely application for WPAN technologies'

a. home control

systems

c. industrial control

systems

b. video streaming d. security systems

2. Which of the following is true about WPAN standards'

a. ())) developed

standards for

protocols above

layer 2

c. ())) *02.1&.1 is

the "luetooth

standard

b. industry alliancesdeveloped

d. *02.1+n is the,ig"ee standard

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specifications for

layers 1 and 2

. Which of the following is true about the O-( model and ())) *02'

a. the P/ is part of

the /ata in% layer

c. the is part of

the Physical layer

b. the PP formats

data received from

the A

d. the A layer is

responsible for

establishing

connectivity to the

local networ%

#. Which radio freuency band does "luetooth use'

a. 2.# 345 (- c. 2.0 345 (-

b. &.0 345 (- d. #.2 345 (-

&. Which of the following is true about the "luetooth protocol stac%'

a. the 2AP sits

between "asebandand 67

c. in% anager

communicatesdirectly with the

Physical 6adio

b. the "aseband layer

sits atop the 67

layer

d. !he 67 layer

communicates

between the in%

anager and

2AP

+. What feature available in some "luetooth devices increases data rates to 2.1 or

bps'

a. in% anager c. 2AP

b. radio module d. )/6

8. Which "luetooth power class allows transmission ranges up to 0 feet'

a. Power lass 1 c. Power lass b. Power lass 2 d. Power lass #



*. "luetooth 1.9 uses a variation of which modulation techniue'

a. P-: c. 7-:

b. A-: d. 3-:

;. What feature of "luetooth version .0 uses a separate radio module that transmits

using the same methods as ())) *02.11'

a. ") c. AP

b. <P d. N7

10. Which transmission techniue is used by "luetooth devices'

a. Narrowband c. /4--

b. 74-- d. <W"

11. Which feature of "luetooth version 1.2 allows "luetooth networ%s to coe9ist with

*02.11 networ%s with a minimum of interference'

a. adaptive freuency

hopping

c. alternate

A=P4>

b. freuency hopping

spread spectrum

d. "luetooth low

energy

12. What is created when a "luetooth networ% has one master and at least one slave using

the same channel'

a. scatternet c. piconet

b. wi$fi net d. bluenet

1. 4ow is the master device determined in a "luetooth networ%'

a. the device with the

lowest address

number

c. the first device to

send out an inuiry

message to discover

other devices

b. the device with the d. the device that



highest priority hop

seuence on the

piconet

carries out a paging

procedure and

establishes a

connection

1#. Which of the following is NO! a field in a "luetooth frame'

a. Access code c. 4eader

b. 7rame chec%

seuence

d. Payload

1&. Which of the following is NO! a "luetooth error correction scheme'a. 1= rate 7) c. A6?

b. 2= rate 7) d. 6

1+. (n which "luetooth power mode is only the slave device@s internal timer running'

a. active mode c. hold mode

b. sniff mode d. par% mode

18. Which of the following is true about the ,ig"ee standard'

a. designed to support

mesh networ%ing

c. used for larger data

transfers than

"luetooth

b. replaced an e9isting

global open

standard

d. operates in the &.0

and +.& 345 (-

bands

1*. Which layer in a ,ig"ee device is responsible for detecting the presence of an 67

signal in the currently selected channel'

a. c. A

b. P4> d. <pper

1;. Which tas% is the A layer responsible for in an *02.1&.# device'



a. turning the radio

transceiver on and

off

c. association and

disassociation

b. analy5ing lin%

uality

d. selecting a

freuency channelfor operation

20. Which type of ,ig"ee device controls the networ% in a star topology'

a. all end$node

devices

c. full$function device

b. reduced function

device

d. PAN coordinator

CO'LETION

1. (n a ,ig"ee tree topology if a child loses it connection with its 77/ it becomes aBnC

DDDDDDDDDDDDD.

2. DDDDDDDDDDDDDDDD is an *02.1&.#$based technology that implements (Pv+ on

WPANs and supports mesh networ%ing.

. A DDDDDDDDDDDDDD authority is a private company that verifies the authenticity of

each user in order to discourage fraud.

#. (n "luetooth )ncryption ode DDDDDD all traffic is encrypted.

&. *02.1&.# provides for DDDDDDDDDDDDDDD integrity a techniue that uses a message

integrity code.

'#TCIN%

a. *$/P-: f. inuiry procedure

b. A lin% g. (

c. A6? h. modulation inde9

d. binding i. seuential freshnesse. guaranteed time E. superframe



slots

1. a reserved period for critical devices to transmit priority data

2. a simple method of phase shift %eying that uses eight degrees of phase to encode

tribits

. the process of establishing a relationship between endpoints in a ,ig"ee networ%

#. a security service available in *02.1&.# and used by the receiving device

&. a process that enables a device to discover which devices are in range

+. a pac%et$switched lin% that is used for data transmissions

8. the amount that the freuency varies

*. an error$correction scheme that continuously retransmits until an ac%nowledgment is

received or a timeout value is e9ceeded

;. a mechanism for managing transmissions in a piconet

10. a code composed of a subset of the data the length of the data and the symmetric %ey

SOT #NSWE

1. What are the three types of addresses used in a "luetooth piconet' /escribe each.

2. /escribe the two types of physical lin%s between "luetooth devices.

. What are the two types of networ% access used in ())) *02.1&. networ%s' /escribe

them.

#. ist three of the seven tas%s the *02.1&.# A layer is responsible for.

&. What are the four levels of addresses for identifying devices within a ,ig"ee PAN'

+. What is a cluster tree topology and how do they compare to mesh networ%s'

8. 4ow is power management implemented in a ,ig"ee networ%'



*. /escribe the Wireless4A6! technology.

;. ist and describe the three levels of "luetooth security.

10. What is the process that ,ig"ee WPANs use for authentication and encryption'

/escribe how it wor%s.

Cha)ter 4 . i/h.ate Wirele"" er"onal #rea Network"

T2E+F#LSE

1. ())) *02.1& covers all the WPAN wor%ing groups.

2. !he W4/( consortium developed the W4/( specification primarily for the delivery

of data produced from online database ueries.

. !he piconet coordinator in a Wireless4/ networ% should be a battery operated device

for mobility.

#. !he /-P- power saving mode allows devices to sleep for long periods of time until

they choose to wa%e up and listen to a beacon.

&. <W" is capable of handling multiple data streams including 4/ television.

'2LTILE COICE

1. Which ())) standard enables multimedia connectivity between mobile and fi9ed

consumer devices within the home'a. *02.1&.c c. *02.1&.1

b. *02.1&.& d. *02.1&.#

2. (n which freuency range does W4/( operate'

a. 2.# 345 c. & 345

b. *00 45 d. #00 :45



. Which of the following is true about Wi3ig'

a. it is compatible

with *02.11ac

c. ma%es use of

technology

designed by

A(ON

b. it reuires layer

and # protocols for

audiovisual support

d. it has adopted the

*02.1&.c standard

for multimedia

distribution

#. What does Wi3ig use to maintain reliable connections at very high freuencies'

a. single$carriermodulation c. O7/

b. beamforming d. protocol adaptation

layers

&. What techniue does Wireless4/ employ to support data rates over 2& 3bps'

a. 6P c. 4/(

b. s patial multiple9ing d. beamforming

+. Which of the following is true about a WFAN piconet'

a. the piconet relies on

an access point

c. large non$mobile

devices li%e !Fs

are not part of a

piconet

b. the PN is typically

a mobile device

such as a tablet

computer

d. the PN is the first

sin% device in the

area

8. Which of the following is described as a piconet that has its own PN but depends on

the original piconet@s PN to allocate a private bloc% of time when its devices are

allowed to transmit'

a. child piconet c. neighbor piconet

b. parent piconet d. subordinate piconet



*. Which of the following is NO! an 46 WPAN feature provided by the *02.1&. A

layer'

a. uses a one$octet

device (/

c. data transport

includes ?o-

b. PN can be ueried

about other devices

d. infrastructure mode

networ%ing is

supported

;. Which part of an *02.1&. superframe is used for association and command

communication'

a. contention access period c. channel timeallocation period

b. beacon d. management

channel time

allocation

10. What type of transmission method does an *02.1&. piconet use during the !AP'

a. -/A c. 7/A

b. !/A d. /A

11. Which field of the *02.1&. A frame format is used to reassemble a file in the

correct seuence'

a. 7rame control c. 7ragmentation

control

b. Piconet (/ d. -tream inde9

12. Which *02.1&. power$saving methods allows devices to sleep for the duration of

several superframes and allows them to wa%e up in the middle of a superframe to

transmit or receive data'

a. P-P- c. P-P-

b. AP- d. AP(

1. Which radio band does the *02.1&.c standard use'



a. &.0 345 c. 2.# 345

b. +0 345 d. p00 45

1#. 4ow many channels and what is the width of each *02.1&.c channel'

a. # 2 345 c. 11 2& 45

b. + 200 45 d. 1# &0 45

1&. Which of the following is NO! a *02.1&.c P4> layer enhancement'

a. passive scanning c. channel energy

detection b. parity bit error

detection

d. transmit power

control

1+. !he 67 modulation techniues used for *02.1&.c are variations of which of the

following'

a. ?A and P-: c. N6,$ and N6,$(

b. 7-: and A-: d. "P-: and ?P-:

18. (n the Wireless4/ specification 1.1 Which of the following is NO! a function of the

higher protocol layers'

a. video format

selection

c. device discovery

b. cloc%

synchroni5ation

d. video and audio

encoding and

decoding

1*. What application has <W" been used for since the 1;+0@s'

a. video streaming c. cellular phone

towers

b. ground$penetrating

radar

d. automobile speed

detectors



1;. What term is used for the techniue in which the amplitude polarity or position of an

analog pulse represents either a 1 or a 0'

a. biphase modulation c. direct$seuence

<W"

b. mesh networ%ing d. impulse modulation

20. What type of attac% on a "luetooth device can access contact lists without the user@s

%nowledge'

a. blueEac%ing c. bluesnarfing

b. bluespoofing d. blue/o-

CO'LETION

1. !he ())) *02.1&.c standard enables DDDDDDDDDDDDDDDD connectivity between

mobile and fi9ed consumer devices within the home.

2. !he W4/( specification is designed to mirror the screens of multiple devices to the

!F screen with the use of DDDDDDDDDDDD.

. DDDDDDDDDDDDDDDDDDDDD uses multiple radios and antennas to steer a signal in the

direction of the receiver.

#. ,ig"ee uses aBnC DDDDDDDDDDDDDDD encryption %ey for networ%$wide

communications.

&. -ecurity for ())) *02.1&. 46 WPANs is based on DDDDDDDDDDDDDDDD a symmetric

%ey encryption mechanism.

'#TCIN%

a. biphase modulation f. isochronous

b. channel time

allocations

g. !A

c. contention access

period

h. PN



d. /$WFAN i. spatial multiple9ing

e. 4$WFAN E. superframe

1. periods of time allocated by the PN to a specific device for prioriti5ingcommunications

2. the home or parent WFAN

. time periods used for communication between the devices and the PN

#. a mechanism used to communicate commands or any asynchronous data that may be

present in a superframe

&. a techniue that uses multiple radios and multiple antennas to transmit and receive

different parts of the same P4> frame

+. a time$dependent transmission that must occur every frame or every so many

frames to maintain the uality of the connection

8. a mechanism for managing transmissions in a piconet

*. a device that provides all the basic communications timing in an *02.1&. piconet

;. uses a half$cycle positive analog pulse to represent a 1 and a half$cycle negative

analog pulse to represent a 0

10. a secondary wireless video area networ% that operates in a different freuency channel

SOT #NSWE

1. Provide a summary of the purpose and application for ())) *02.1&.c.

2. ist four potential 46 WPAN applications.

. What was the primary purpose the W4/( consortium developed the W4/(

specification'

#. What do the PAs do for Wi3ig'

&. What are the three sections the Wireless4/ specification divides the P4> layer into'



+. /escribe child and neighbor piconets.

8. /escribe the three parts of an *02.1&. superframe.

*. What information is contained in the 7rame control field of an *02.1&. frame'

;. ist and describe the two modes of security for ())) *02.1&. 46 WPANs.

10. "riefly discuss the potential of spectrum conflict with WPANs.

Cha)ter . Low.S)ee& Wirele"" Local #rea Network"

T2E+F#LSE

1. A wireless residential gateway provide better security than connecting a computer

directly to the (nternet.

2. !he range of an AP base station is appro9imately 8& feet in an environment with no

obstructions and little interference.

. When transmitting above 2 bps using /--- in an *02.11b networ% a "ar%er code

is used.

#. !he P4> layer of the *02.11b standard provides functionality for a client to Eoin a

WAN and stay connected.

&. A -(7- occurs immediately after the transmission of frames and no device is allowed

to transmit during the -(7-.

'2LTILE COICE

1. Which of the following is NO! true about wireless N(s'

a. they change the

computer@s internal

data from serial to

parallel before

transmitting

c. they have an

antenna instead of a

cable port

b. you can connect an d. noteboo% computers



e9ternal wireless

N( to a <-" port

often use ini P(

cards for wireless

N(s

2. Which component found in an access point is NO! found in a wireless N('

a. radio transmitter c. radio receiver

b. 6G$#& interface d. antenna

. Aside from acting as the base station for the wireless networ% what other function

does an AP perform'

a. it routes pac%ets c. pro9y server

b. acts as a bridge d. it performs as a

firewall

#. Where does an AP that it using Po) get its / power from'

a. an A outlet c. <!P cables

b. a built$in A=/

converter

d. high$freuency

radio waves

&. (f three friends each have a laptop computer and they want to e9change files

wirelessly but nobody has an AP what should they do'

a. use Ad hoc mode c. use the "asic

-ervice -et

b. use infrastructure

mode

d. use the )9tended

-ervice -et

+. What is the term used for when a client finds a different AP that can provide a better$

uality signal and then associates with the new AP'

a. reassociation c. transfer

b. reconnect d. handoff

8. Which of the following is NO! a field in the *02.11b PP frame'



a. -tart frame

delimiter

c. -ignal data rate

b. -ource address d. ength

*. Which field of the PP frame indicates how long in microseconds the data portion

of the frame is'

a. -tart frame

delimiter

c. -ervice

b. -ignal data rate d. ength

;. What is the primary Eob of the P/ sublayer'

a. translate binary 1s

and 0s into radio

signals

c. reformat the data

received from the

A layer

b. evaluate the 4eader

error chec% field

d. implement a

channel access

method

10. What is the ma9imum throughput a device can achieve operating on an *02.11bnetwor%'

a. about 11 bps c. about &# bps

b. about &.& bps d. about 28 bps

11. What is the period of time devices must wait after the medium is clear before

attempting to transmit'

a. collision timeframe c. bac%off interval

b. signal data rate d. synchroni5ation

period

12. What is the 6!-=!- protocol designed to reduce or prevent'

a. negative

ac%nowledgements

c. collisions

b. 6 errors d. handsha%es



1. With which channel access method does the AP as% each computer if it wants to

transmit'

a. point coordinated

function

c. -A=/

b. -A=A d. virtual carrier

sensing

1#. (n active scanning what does the client do initially to start the association process'

a. poll the access

point

c. send a beacon with

the reuested --(/

b. send a probe frame d. transmit anassociate reuest

frame

1&. What is the last frame sent to successfully conclude a client@s attempt to associate

using active scanning'

a. scan reply c. probe response

b. synchroni5e

ac%nowledgement

d. associate response

1+. Which of the following is true about client@s associating with an AP'

a. an AP can reEect the

reuest based on

the client A

address

c. a client can

reassociate with

another AP in a

"--

b. a client can be

associated to

multiple APs

simultaneously for

fault tolerance

d. if a client is not

preconfigured for a

specific AP it will

not attempt to

associate

18. Which of the following is NO! true about WAN power management'

a. power management

is transparent to

applications

c. the AP uses

timestamps to

maintainsynchroni5ation



b. *02.11b devices use

power management

in ad hoc mode

d. the AP %eeps a

record of which

client@s are sleeping

1*. What is the list of devices called that an AP sends in a beacon that indicates which

clients have buffered frames waiting'

a. sleep mode

identifier

c. traffic indication

map

b. buffered frames

allocation

d. pac%et delivery list

1;. Which of the following is a function performed by A management frames'

a. reuest$to$send c. reassociation

reuest

b. transmit data to the

client

d. ac%nowledgement

20. What is the time period during which all devices must wait between transmissions of

data frames'a. -hort (nterframe

-pace

c. (dle 6euirement

Period

b. /7 (nterframe

-pace

d. !ransmission

ontrol Period

CO'LETION

1. (n the place of a port for a cable connection a wireless N( has aBnC DDDDDDDDDDDDDD.

2. An AP acts as aBnC DDDDDDDDDDDD between the wired and wireless networ%s.

. DDDDDDDDDDDDDDDDDDDD mode consists of at least one wireless client connected to a

single AP.

#. Once the DDDDDDDDDDDDD has formatted the frame it passes the frame to the P/sublayer.



&. When a client is finishing transmitting it begins listening for aBnC DDDDDDDDDDDDDDDD

from the receiving device.

'#TCIN%

a. A: f. control frames

b. active scanning g. /7

c. associate reuest

frame

h. fragmentation

d. "-- i. management frames

e. channel access

methods

E. passive scanning

1. a WAN mode that consists of at least one wireless client and one AP

2. a frame sent by a client to an AP that contains the client@s capabilities and supported

rates

. A frames that assist in delivering the frames that contain data

#. the process of listening to each available channel for a set period of time

&. the division of data to be transmitted from one large frame into several smaller frames

+. a procedure used to reduce collisions by reuiring the receiving station to send an

e9plicit pac%et bac% to the sending station

8. the default channel access method in ())) *02.11 WANs

*. A frames that are used for e9ample to set up the initial communications between

a client and the AP

;. the process of sending frames to gather information

10. the different ways of sharing resources in a networ% environment

SOT #NSWE

1. What are the four steps involved in wireless N( transmission'

2. /escribe the two basic functions of an AP.



1. Which of the following *02.11 standards uses <$N(( bands and does not use (-

bands'

a. *02.11b c. *02.11g

b. *02.11a d. *02.11n

2. Which of the <$N(( bands is approved for outdoor use'

a. <$N(($1 c. <$N(($2 )9tended

b. <$N(($2 d. <$N(($

. What is the multiple9ing techniue used by *02.11a to help solve the multipathdistortion problem'

a. ?P-: c. 7)

b. O7/ d. P"

#. 4ow many bits per symbol can be transmitted using 1+$?A'

a. 1+ c. #

b. 2 d. *

&. Which wireless data rate uses +#$level uadrature amplitude modulation transmitting

over #* subcarriers'

a. 11 bps c. 2# bps

b. 2 bps d. &# bps

+. Which layer defines the characteristics of the wireless medium'

a. PP c.

b. P/ d. A

8. Which field in an *02.11a PP frame are used to initiali5e part of the transmitter and

receiver circuits'

a. !ail c. -ervice



b. Pad d. Parity

*. What is the disadvantage of an *02.11a WAN compared to an *02.11b WAN'

a. shorter range c. more interference

sources

b. higher error rate d. lower bandwidth

;. 4ow many non$overlapping channels are available in an *02.11g WAN'

a. 2 c.

b. 11 d. *

10. Why is the -(7- time in the *02.11g standard effectively e9tended to 1+

microseconds'

a. for compatibility

with *02.11a

c. to allow *02.11n

devices on the

networ%

b. to account for uiet

time

d. to achieve data rates

higher than 11bps

11. Which of the following is correct about antenna diversity'

a. it is the cornerstone

of the *02.11n

technology

c. it increases

bandwidth while

decreasing range

b. it is two radios and

one antenna

d. it is two antennas

with one radio

12. What do *02.11n devices employ to direct a transmission bac% to the device from

which a frame was received'

a. spatial multiple9ing c. (O

b. beamforming d. antenna diversity

1. What is the ma9imum radio configuration for *02.11n devices'



a. transmitters

receivers

c. # transmitters #

receivers

b. + transmitters #

receivers

d. # transmitters

receivers

1#. 4ow much bandwidth do *02.11n devices utili5e when running at speeds up to 00

bps'

a. 20 45 c. #0 45

b. 22 45 d. ## 45

1&. What is the purpose of a guard band'

a. help prevent

adEacent channel

interference

c. helps prevent

outside )

interference

b. help prevent co$

channel interference

d. helps prevent

intersymbol

interference

1+. What *02.11n mode of operation is referred to as greenfield'

a. transmitting in non$

4! mode with

*02.11a=g devices

c. transmitting with

only 4! devices

b. transmitting in

mi9ed 4!=non$4!

devices

d. transmitting at a

faster speed than

receiving

18. Which 4! operation mode is used when one or more non$4! devices are associated

with an 4! AP and supports devices at 20 or #0 45'

a. ode 0 c. ode 2

b. ode 1 d. ode

1*. Which ())) standard supports ?o- and enables prioriti5ation of frames in /7'

a. *02.11f c. *02.11d

b. *02.11e d. *02.11c



1;. What *02.11 standard under development uses up to 1+0 45 bandwidth and can

achieve data rates up to 8 3bps'

a. *02.11bg c. *02.11cd

b. *02.11ac d. *02.11ga

20. What type of device can you deploy to allow client WAN connectivity when the

main AP is out of range'

a. bridge c. monitor

b. controller d. router

CO'LETION

1. DDDDDDDDDDDDDDDDDD distortion occurs when the receiving device gets the same

signal from several different directions at different times.

2. !he DDDDDDDDDDDDDDD interval prevents a new symbol from arriving at the receiver

before the last multipath signal reaches the receiver@s antenna.

. AP DDDDDDDDDDDDDDDDDDDDD is a security problem that ta%es advantage of the fact

that clients authenticate with the AP but not vice versa.

#. !he strength of encryption relies on %eeping the DDDDDDDDDD secret as well as its

length.

&. *02.1H uses the )9tensible DDDDDDDDDDDDDDDD Protocol for relaying access reuests between a wireless device the AP and the 6A/(<- server.

'#TCIN%

a. co$channel

interference

f. reduced interframe

space

b. !-$to$self g. spatial multiple9ing

c. guard band h. symbol



d. intersymbol

interference

i. !:(P

e. pre$shared %ey E. wireless controller

1. a 12*$bit %ey used by WPA

2. interference between two devices configured to use the same freuency channel

. a change in the signal also %nown as a baud

#. a 2$microsecond interframe space that can be used in *02.11n networ%s

&. the unused freuency space between two adEacent channels

+. a security protocol used in WPA that provides per pac%et %ey$mi9ing

8. a coordination method used by *02.11g devices that prevents *02.11 and *02.11b

devices that do not IunderstandJ O7/ from attempting to initiate a transmission

*. a transmission techniue that uses multiple radios and multiple antennas to send

different parts of the same message simultaneously

;. devices that ma%e it much easier to manage large WANs by implementing most of

the functions of an AP

10. caused when the beginning of a symbol arrives at the receiver antenna while

multipath reflections from the previous symbol are still reaching the antenna

SOT #NSWE

1. What is the <$N(( freuency band and WAN standard uses it'

2. /escribe how *02.11a uses the <$N(($1 <$N(($2 and <$N(($2 e9tended bands.

. What are the two mandatory and two optional transmission modes defined in the

*02.11g P4> layer'

#. What are the three parts of an *02.11a PP frame' /escribe them briefly.

&. /escribe the approach that *02.11n B4!C ta%es to the implementation of the P4>

layer.



+. What is (O technology' (nclude beamforming and spatial multiple9ing in your

answer.

8. What is the channel configuration of *02.11n and how does it help achieve higherdata rates'

*. What is the guard interval and what does it help prevent'

;. What are wireless controllers and why are they important in WANs'

10. What is *02.11i and what aspect of WANs does it deal with'

cis 513 week 11 final exam

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