Business Data Networks and Security, 11e (Panko)
Chapter 6 Wireless LANS I
1) Wireless network standards operate at ________.
A) the data link layer
B) the Internet layer
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 1a
Objective: Describe basic Wi-Fi technology and access points.
AACSB: Applying Information Technology, Application of Knowledge
2) ________ is a wireless network standard.
A) OSI
B) TCP/IP
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 1b
Objective: Describe basic Wi-Fi technology and access points.
AACSB: Applying Information Technology, Application of Knowledge
3) Wi-Fi Standards come from the ________ Working Group.
A) 802.1
B) 802.3
C) 802.11
D) 802.1X
Answer: C
Difficulty: Basic
Question: 2a
Objective: Describe basic Wi-Fi technology and access points.
AACSB: Applying Information Technology, Application of Knowledge
4) Wi-Fi is a term used by the ________.
A) IEEE
B) Wi-Fi Alliance
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Deeper
Question: 2b
Objective: Describe basic Wi-Fi technology and access points.
AACSB: Applying Information Technology
5) We use the terms Wi-Fi and ________ interchangeably in this book.
A) 802.1
B) 802.3
C) 802.11
D) 802.1X
Answer: C
Difficulty: Basic
Question: 2c
Objective: Describe basic Wi-Fi technology and access points.
AACSB: Applying Information Technology
6) In a Wi-Fi LAN, wireless hosts generally send frames directly to one another.
Answer: FALSE
Difficulty: Basic
Question: 3a
Objective: Describe basic Wi-Fi technology and access points.
AACSB: Applying Information Technology
7) Wireless access points typically link wireless clients to ________.
A) wireless servers
B) servers on the wired network
C) both A and B
Answer: B
Difficulty: Deeper
Question: 3b
Objective: Describe basic Wi-Fi technology and access points.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
8) Compared to wired transmission, propagation problems in radio transmissions are ________.
A) worse
B) about as bad
C) better
Answer: A
Difficulty: Basic
Question: 4a
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
9) Simple installation rules are sufficient to reduce propagation problems to nonissues in ________.
A) 802.3
B) 802.11
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Deeper
Question: 4b
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
10) Wireless radio transmission speed is usually measured in terms of ________.
A) wavelength
B) frequency
C) amplitude
D) dollars
Answer: B
Difficulty: Basic
Question: 5b
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology
11) Frequency is measured in terms of ________.
A) nanometers
B) hertz
C) microns
D) microseconds
Answer: B
Difficulty: Basic
Question: 5c
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology
12) Most wireless systems operate in the ________ range.
A) hz
B) kHz
C) MHz
D) GHz
Answer: D
Difficulty: Basic
Question: 5d
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology
13) If another wireless device is near, but in an unknown direction, it is better to use ________.
A) an omnidirectional antenna
B) a dish antenna
C) neither A nor B
Answer: A
Difficulty: Basic
Question: 6a
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
14) Wi-Fi normally uses a(n) ________.
A) omnidirectional antenna
B) dish antenna
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 6d
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology
15) If a signal has a strength of 100 mW at 10 meters, how strong will it be at 40 meters?
A) about 0.5 mW
B) about 5 mW
C) about 25 mW
D) about 6 mW
Answer: D
Difficulty: Deeper
Question: 7a
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
16) If a signal has a strength of 100 mW at 10 meters, how strong will it be at 100 meters?
A) about 10 mW
B) about 1 mW
C) about 0.1
D) none of the above
Answer: C
Difficulty: Deeper
Question: 7b
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
17) If the signal strength from an omnidirectional radio source is 100 mW at 10 meters, how strong will it be at 30 meters, ignoring absorptive attenuation?
A) about 30 mW
B) about 11 mW
C) about 4 mW
D) about 0.1 mW
Answer: B
Difficulty: Deeper
Question: 7e
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
18) What propagation problem is especially bad in moist air?
A) absorptive attenuation
B) electromagnetic interference
C) multipath interference
D) inverse square law attenuation
Answer: A
Difficulty: Deeper
Question: 8a
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
19) What propagation problem becomes worse when there is a large, and dense, object between sender and receiver?
A) multipath interference
B) shadow zones (dead zones)
C) inverse square law attenuation
D) none of the above
Answer: B
Difficulty: Basic
Question: 8b
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
20) The most serious problem with wireless transmission in WLANs is ________.
A) inverse square law attenuation
B) absorptive attenuation
C) shadow zones
D) multipath interference
Answer: D
Difficulty: Deeper
Question: 8c
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
21) Multipath interference is mitigated through ________.
A) broadband transmission
B) MIMO
C) beamforming
D) spread spectrum transmission
Answer: D
Difficulty: Basic
Question: 8d
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking
22) What propagation problem becomes worse as frequency increases?
A) inverse square law attenuation
B) electromagnetic interference
C) both A and B
D) neither A nor B
Answer: D
Difficulty: Deeper
Question: 8e
Objective: Describe physical layer radio transmission.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
23) The frequency spectrum extends ________.
A) into the gigahertz range
B) into the visible light range
C) into the ultraviolet range
D) to infinity
Answer: D
Difficulty: Basic
Question: 9a
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology
24) In Wi-Fi, 2.4 GHz and 5 GHz refer to ________.
A) frequency spectrums
B) broadbands
C) channels
D) none of the above.
Answer: D
Difficulty: Deeper
Question: 9a
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
25) To handle multiple conversations in 802.11 transmission, you normally use multiple ________.
A) channels
B) frequencies
C) service bands
D) wires
Answer: A
Difficulty: Basic
Question: 9b
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
26) The set of frequencies used for police communication in a city are ________.
A) channels
B) frequencies
C) spectrums
D) none of the above
Answer: D
Difficulty: Deeper
Question: 9d
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
27) An FM radio station is called Moldy Oldies 101.1. The 101.1 refers to its ________.
A) single frequency
B) channel
C) service band
D) none of the above
Answer: B
Difficulty: Deeper
Question: 9e
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
28) Wi-Fi operates in the 2.4GHz and 5GHz ________.
A) frequencies
B) spectrums
C) channels
D) service bands
Answer: D
Difficulty: Basic
Question: 9f
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
29) Signals in a transmission usually ________.
A) travel at a single frequency
B) spread over a range of frequencies
C) spread over the entire frequency distribution
D) spread over the entire service band
Answer: B
Difficulty: Deeper
Question: 10a
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology
30) What is the bandwidth of a channel that extends from 55 MHz to 60 MHz?
A) 60 MHz
B) 55 MHz
C) 65 MHz
D) none of the above
Answer: D
Difficulty: Basic
Question: 10b
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
31) If you want to transmit 7 times as fast in radio, you need to use ________.
A) channels that are about 7 times as wide
B) channels that are about 49 times as wide
C) spread spectrum transmission
D) none of the above
Answer: A
Difficulty: Basic
Question: 10c
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
32) To transmit very rapidly in radio, you need ________.
A) single-frequency transmission
B) single-mode transmission
C) wide bandwidth
D) narrow bandwidth
Answer: C
Difficulty: Basic
Question: 10d
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
33) To transmit data very rapidly, you would want a ________ channel.
A) narrowband
B) broadband
C) single-frequency band
D) single-mode
Answer: B
Difficulty: Basic
Question: 10d
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
34) Channels with wide bandwidths are called ________ channels.
A) multimode
B) full-duplex
C) broadband
D) parallel
Answer: C
Difficulty: Basic
Question: 10e
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology
35) The term “broadband” is commonly used for ________.
A) wide radio bandwidths
B) high-speed transmission in general
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Deeper
Question: 10f
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
36) WLANs normally use ________.
A) licensed bands
B) unlicensed bands
C) both A and B
D) neither A or B
Answer: B
Difficulty: Medium
Question: 11a
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology
37) Many 802.11 standards work in the 5 GHz_____.
A) licensed spectrum
B) unlicensed spectrum
C) licensed service band
D) unlicensed service band
Answer: D
Difficulty: Medium
Question: 11a
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
38) Wi-Fi standards use unlicensed bands for ________
A) greater speed
B) greater standardization
C) greater flexibility
D) greater privacy
Answer: C
Difficulty: Basic
Question: 11b
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
39) In unlicensed bands, ________.
A) you can use radios wherever you please
B) you can prevent nearby businesses from setting up access points in the same channel
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Deeper
Question: 11b
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
40) The downside of unlicensed bands is potential ________
A) speed loss
B) loss of flexibility
C) interference from others
D) less-developed standards
Answer: C
Difficulty: Deeper
Question: 11c
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
41) Two access points that operate on the same channel will ________.
A) bond
B) coordinate their use of the channel
C) interfere
D) divide the available spectrum about equally
Answer: C
Difficulty: Deeper
Question: 12
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
42) 802.11 operates in the ________ unlicensed service band.
A) 2.4 MHz
B) 60 MHz
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 13a
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
43) The 2.4 GHz band supports ________ possible non-overlapping 20 MHz channel(s).
A) 1
B) 3
C) 7
D) 11
Answer: B
Difficulty: Basic
Question: 13b
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology
44) In general, the fewer the channels, ________.
A) the greater the likelihood of interference between access points
B) the smaller the individual channels will be
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Deeper
Question: 13c
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking
45) Companies prefer the 5 GHz band because there is ________ than in the 2.5 GHz band.
A) more bandwidth
B) less absorptive attenuation
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 13d
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
46) If you triple channel bandwidth, what happens to the number of channels in a service band?
A) It triples.
B) It increases by a factor of nine.
C) It is reduced a third.
D) It is reduced a ninth.
Answer: C
Difficulty: Deeper
Question: 13e
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
47) Spread spectrum transmission is used in WLANs because ________.
A) it is required by regulators
B) it offers strong security
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 14a
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
48) Spread spectrum transmission is used in WLANs for ________.
A) higher transmission speed
B) more reliable transmission
C) greater security
D) more efficient transmission
Answer: B
Difficulty: Deeper
Question: 14b
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
49) Spread spectrum transmission’s wider channels brings ________.
A) greater speed
B) greater reliability
C) greater security
D) none of the above
Answer: B
Difficulty: Basic
Question: 14d
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology, Application of Knowledge
50) Which of the following uses OFDM?
A) 802.11ac
B) 802.11n
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 15a
Objective: Explain the frequency spectrum, service bands and channels.
AACSB: Applying Information Technology
51) Access points take ________ from wireless devices and send them on to devices on the wired LAN.
A) packets
B) frames
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Deeper
Question: 16a
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
52) A wireless host sends a packet to a server on the company’s wired Ethernet LAN via an access point. How many frames will be involved in this one-way transmission?
A) 1
B) 2
C) 4
D) There will be one frame for each switch along the way.
Answer: B
Difficulty: Deeper
Question: 16b
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
53) A single access point, and the set of hosts it serves, is called a(n) ________.
A) BSS
B) BSSID
C) ESS
D) none of the above
Answer: A
Difficulty: Basic
Question: 17a
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology
54) In roaming, a wireless client moves from one ________ to another without losing its connection.
A) ESS
B) BSS
C) SSID
D) none of the above
Answer: B
Difficulty: Basic
Question: 17a
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
55) ________ have SSIDs.
A) Wireless clients
B) Wireless access points
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Basic
Question: 17b
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
56) To use an access point, you need to know its ________.
A) SSID
B) BSSID
C) ESSID
D) Wi-Fi ID
Answer: A
Difficulty: Basic
Question: 17b
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology
57) Access points in the same ESS communicate via ________.
A) wireless transmission
B) the distribution system
C) a master access point
D) routers
Answer: B
Difficulty: Deeper
Question: 17c
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology, Application of Knowledge
58) In an extended service set, each access point ________.
A) must have the same SSID
B) must have a different SSID
C) must have a coordinated SSID
D) none of the above
Answer: A
Difficulty: Basic
Question: 17d
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology
59) To connect to an access point, you must know its ________.
A) SSID
B) ESSID
C) IP address
D) Wi-Fi ID
Answer: A
Difficulty: Basic
Question: 17d
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology
60) If there is an access point that serves eight wireless hosts, on how many channels will these devices transmit and receive during the course of an hour or two?
A) 1
B) 2
C) 8
D) 9
Answer: A
Difficulty: Basic
Question: 18a
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
61) ________ is a technique for preventing two wireless stations from interfering with each other by transmitting at the same time.
A) Creating extended service sets
B) Roaming
C) The distribution system
D) Media access control
Answer: D
Difficulty: Basic
Question: 18b
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology
62) Media access control governs transmission by ________.
A) access points
B) wireless hosts
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 18c
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
63) Within a BSS (and without MU-MIMO), the access point and a wireless host it serves can transmit at the same time.
Answer: FALSE
Difficulty: Basic
Question: 18d
Objective: Describe 802.11 Wi-Fi operation with access points.
AACSB: Applying Information Technology, Analytical Thinking
64) In CSMA/CA, CS means ________.
A) cancel sending
B) counter-source
C) carriage suspension
D) carrier sense
Answer: D
Difficulty: Basic
Question: 19a
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology
65) In CSMA/CD+ACK, when a wireless NIC wishes to transmit, it listens for traffic. If there is traffic, it waits. When the traffic stops, it may transmit immediately.
A) always true
B) sometimes true
C) always false
Answer: B
Difficulty: Deeper
Question: 19b
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
66) When a receiver transmits an ACK, ________.
A) it must use CSMA/CA
B) it must use CSMA
C) in must use CA
D) it must transmit immediately
Answer: D
Difficulty: Deeper
Question: 19d
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology, Application of Knowledge
67) CSMA/CA+ACK is ________.
A) unreliable
B) reliable
C) semireliable
Answer: B
Difficulty: Basic
Question: 19e
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology
68) Which is one of the only two reliable protocols we have seen this term?
A) IP
B) CSMA/CA+ACK
C) UDP
D) 802.3
Answer: B
Difficulty: Basic
Question: 19f
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
69) In ________, when a wireless host wishes to send, it first sends a message to the wireless access point asking for permission to send. When the access point sends back a response, the host sending the original message may transmit. All other hosts must wait.
A) CSMA/CA+ACK
B) CSMA/CA
C) CSMA/CD
D) RTS/CTS
Answer: D
Difficulty: Basic
Question: 20a
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology, Application of Knowledge
70) The 802.11 standard has two mechanisms for media access control. Of the two, ________ is mandatory.
A) MAC
B) CSMA/CA+ACK
C) RTS/CTS
D) CSMA/CD
Answer: B
Difficulty: Basic
Question: 20b
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology
71) Which of the following is more efficient and faster?
A) CSMA/CA+ACK
B) RTS/CTS
C) Both are about equally efficient and fast.
Answer: A
Difficulty: Basic
Question: 20d
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology, Application of Knowledge
72) When does it make sense to use RTS/CTS?
A) when all devices can hear each other
B) when not all of the devices can hear each other
C) when efficiency is crucial
D) always
Answer: B
Difficulty: Medium
Question: 20e
Objective: If you have read the More Information box, “Media Access Control,” describe how MAC operates.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
73) Wider channel bandwidth ________.
A) increases transmission speed
B) allows more channels to be used in a service band
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 21
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
74) ________ is among the most widely used 802.11 transmission standards used today.
A) 802.11g
B) 802.11ac
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Basic
Question: 22a
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology
75) Today, Wi-Fi sales are dominated by ________.
A) 802.11a
B) 802.11g
C) 802.11n
D) 802.11ac
Answer: D
Difficulty: Basic
Question: 22b
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology
76) Individual throughput for users of an access point ________.
A) depends on how many users are sharing the access point
B) depends on your distance from the access point
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Deeper
Question: 23a
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology, Application of Knowledge
77) As your wireless client travels away from an access point, ________.
A) errors begin to increase
B) your transmission speed decreases
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Deeper
Question: 23b
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology, Application of Knowledge
78) MIMO ________.
A) bonds two or more channels for higher speed
B) is used in all forms of 802.11
C) uses a single spatial stream but multiple signals
D) transmits multiple signals in the same channel
Answer: D
Difficulty: Deeper
Question: 24a
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology, Application of Knowledge
79) MIMO ________.
A) increases throughput
B) lowers propagation distance
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 24b
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology, Application of Knowledge
80) MIMO ________.
A) increases transmission speed
B) increases transmission distance
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 24c
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology, Application of Knowledge
81) Beamforming can allow an access point to ________.
A) focus power on individual clients
B) send signals to two different clients at the same time
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Deeper
Question: 25a
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology, Application of Knowledge
82) An access point can transmit to more than one wireless client at a time with ________.
A) bonding
B) MIMO
C) Multiuser MIMO
D) CSMC/CA+ACK
Answer: C
Difficulty: Basic
Question: 25b
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology
83) Which of the following allows access point transmission two wireless clients simultaneously?
A) CSMA/CA+ACK
B) MIMO
C) MU-MIMO
D) none of the above
Answer: C
Difficulty: Basic
Question: 25c
Objective: Compare and contrast 802.11n and 802.11ac.
AACSB: Applying Information Technology
84) If an 802.11n client tries to use an 802.11ac access point, ________.
A) they will not be able to communicate
B) they will communicate using 802.11n
C) they will communicate using 802.11ac
D) either B or C
Answer: B
Difficulty: Deeper
Question: 26a
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
85) Because of ________, an 802.11AX access point can communicate with an 802.11AY client.
A) MIMO
B) MU-MIMO
C) backward compatibility
D) They CANNOT communicate.
Answer: C
Difficulty: Basic
Question: 26c
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
86) An 802.11ac Wi-Fi compatibility testing profile contains ________ of the features of the 802.11ac.
A) all
B) nearly all
C) some
D) none
Answer: C
Difficulty: Basic
Question: 27a
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology, Application of Knowledge
87) If two products both comply with 802.11 ac, their performance will always be similar.
Answer: FALSE
Difficulty: Deeper
Question: 27a
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
88) What is the main promise of 802.11ax over 802.11ac?
A) higher speed
B) the ability to serve more users
C) MIMO
D) Mu-MIMO
Answer: B
Difficulty: Basic
Question: 28a
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology, Application of Knowledge
89) The 60 GHz unlicensed service band offers ________ compared to lower-frequency service bands.
A) more speed per channel
B) greater propagation distance
C) greater ability to penetrate walls
D) all of the above
Answer: A
Difficulty: Deeper
Question: 28b
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology, Application of Knowledge
90) Which of the following works in the 60 GHz unlicensed service band?
A) 802.11ac
B) 802.11ad
C) 802.11ax
D) all of the above
Answer: B
Difficulty: Deeper
Question: 28b
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology
91) The main problem with the 60 GHz unlicensed band is that ________.
A) it cannot be used outside
B) it does not support MIMO
C) transmission speed is low
D) transmission distance is short
Answer: D
Difficulty: Basic
Question: 28c
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
92) Which of the following is true of 802.11ay over 802.11ad?
A) greater propagation speed
B) greater propagation distance
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Deeper
Question: 28d
Objective: If you read the More Information box, “802.11/Wi-Fin Notes,” discuss backwards compatibility, profile waves, and emerging 802.11 Wi-Fi standards.
AACSB: Applying Information Technology, Application of Knowledge
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