Business Data Networks and Security, 11e (Panko)
Chapter 7 Wireless LANS II
1) Nearly all public Wi-Fi hotspots encrypt your transmissions.
Answer: FALSE
Difficulty: Basic
Question: 1a
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology
2) If a drive-by hacker succeeds in connecting to an internal access point, the network traffic is ________.
A) still protected by a firewall
B) still protected by encryption
C) both A and B
D) neither A nor B
Answer: D
Difficulty: Basic
Question: 1d
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
3) 802.11i provides ________.
A) confidentiality
B) message integrity
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 2a
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology
4) In 802.11i, protection is provided between the client and the ________.
A) access point
B) switch
C) router
D) server
Answer: A
Difficulty: Basic
Question: 2b
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
5) The protection of communication between a wireless client and the access point is ________.
A) link security
B) end-to-end security
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 2c
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
6) The Wi-Fi Alliance calls 802.11i ________.
A) WEP
B) WPA
C) WPA2
D) none of the above
Answer: C
Difficulty: Basic
Question: 2d
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology
7) Which offers stronger security?
A) WPA
B) 802.11i
C) both A and B offer equally strong security.
Answer: B
Difficulty: Basic
Question: 2e
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
8) What is the strongest security protocol for 802.11 today?
A) 802.11s
B) 802.11X
C) WPA
D) 802.11i
Answer: D
Difficulty: Basic
Question: 2e
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
9) 802.11i PSK initial authentication mode was created for ________.
A) corporations with multiple access points
B) residences with a single access point
C) residences with less than eight access points
D) corporations with less than eight access points
Answer: B
Difficulty: Basic
Question: 3a
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology
10) 802.11i 802.1X initial authentication mode was created for ________.
A) corporations with multiple access points
B) residences with a single access point
C) residences with less than eight access points
D) corporations with less than eight access points
Answer: A
Difficulty: Basic
Question: 3a
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology
11) Communication after authentication is protected most strongly if the ________ initial authentication is used.
A) PSK
B) 802.1X
C) WPA
D) It does not matter which initial authentication mode is used.
Answer: D
Difficulty: Deeper
Question: 3c
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
12) In 802.11i ________, hosts must know a shared initial key.
A) 802.1X initial authentication mode
B) PSK initial authentication mode
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Basic
Question: 4b
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
13) After authentication in 80.11i PSK mode, a wireless client communicates with the access point via a(n) ________ key.
A) VPN
B) pairwise session
C) 802.1X
D) preshared
Answer: B
Difficulty: Basic
Question: 4c
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
14) After two wireless clients authenticate themselves via PSK to an access point, they will use ________ to communicate with the access point.
A) the preshared key
B) an 802.1X key
C) WPA keys
D) different pairwise session keys
Answer: D
Difficulty: Deeper
Question: 4C
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
15) Which of the following is a risk in 802.11i PSK mode?
A) Unauthorized sharing of the pre-shared key.
B) A weak passphrase may be selected.
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 4d
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
16) In 802.11i PSK mode, the pass phrase should be at least ________ characters long.
A) 8
B) 12
C) 20
D) 128
Answer: C
Difficulty: Basic
Question: 4f
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology
17) If a firm has many access points, it should use ________ initial authentication mode in 802.11i.
A) PSK
B) 802.1X
C) IPsec
D) WPA
Answer: B
Difficulty: Basic
Question: 5a
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
18) In what initial authentication mode of 802.11i is a central authentication server used?
A) 802.1X
B) PSK
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 5b
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
19) In 802.1x initial authentication mode, the authenticator is the ________.
A) wireless client
B) wireless access point
C) authentication server
D) none of the above
Answer: B
Difficulty: Basic
Question: 5d
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Application of Knowledge
20) In 802.1x initial authentication mode, the VERIFIER is the ________.
A) wireless client
B) wireless access point
C) authentication server
D) none of the above
Answer: D
Difficulty: Deeper
Question: 5d
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
21) What initial authentication mode does 802.11i use?
A) 802.1X
B) PSK
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Deeper
Question: 6a
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
22) Which initial authentication mode is used for message-by-message encryption, authentication, and message integrity?
A) 802.1X
B) PSK
C) both A and B
D) neither A nor B
Answer: D
Difficulty: Deeper
Question: 6b
Objective: Explain 802.11i Wi-Fi security.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
23) A ________ is an unauthorized internal access point.
A) binky
B) shadow
C) rogue
D) none of the above
Answer: C
Difficulty: Basic
Question: 7a
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Application of Knowledge
24) A rogue access point is usually created by ________.
A) an employee
B) an external attacker
C) the IT security department
D) an evil twin
Answer: A
Difficulty: Deeper
Question: 7a
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Application of Knowledge
25) 802.11i can defeat rogue access points.
Answer: FALSE
Difficulty: Basic
Question: 7b
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Application of Knowledge
26) Employees who set up rogue access points usually have malicious motives.
Answer: FALSE
Difficulty: Deeper
Question: 7c
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Application of Knowledge
27) An evil twin access point is usually ________.
A) a database
B) a laptop computer
C) a calculator
D) a spreadsheet
Answer: B
Difficulty: Deeper
Question: 8a
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Application of Knowledge
28) If a company uses 802.11i for its core security protocol, an evil twin access point will set up ________ 802.11i connection(s).
A) one
B) two
C) four
D) none of the above.
Answer: B
Difficulty: Basic
Question: 8a
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
29) When a wireless client in an evil twin attack transmits, ________.
A) the evil twin reads the packet, encrypts it, and passes on the packet
B) the evil twin reads the frame, encrypts it, and passes on the frame
C) the evil twin reads the packet and passes on the packet
D) the evil twin reads the frame and passes on the frame
Answer: B
Difficulty: Deeper
Question: 8b
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Application of Knowledge
30) Which of the following is usually set up by a hacker outside the building?
A) a rogue access point
B) an evil twin access point
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Deeper
Question: 8c
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
31) Which of the following secures communication between the wireless computer and the server it wishes to use against evil twin attacks?
A) VLANs
B) VPNs
C) 802.1X mode
D) none of the above
Answer: B
Difficulty: Basic
Question: 8d
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Application of Knowledge
32) In VPNs designed to frustrate evil twin attacks, the shared secret between the client and the server is ________.
A) transmitted in the clear
B) transmitted with cryptographic protections
C) not transmitted
D) any of the above
Answer: C
Difficulty: Basic
Question: 8d
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
33) A VPN provides ________.
A) link security
B) end-to-end security
C) comprehensive security
D) none of the above
Answer: B
Difficulty: Basic
Question: 8e
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
34) You can test whether an evil twin attack has taken place against your wireless client.
Answer: FALSE
Difficulty: Deeper
Question: 8e
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
35) You should use a VPN ________.
A) if you know that an evil twin access point is in use.
B) if you know that your device has been compromised by an evil twin attack.
C) always
D) never
Answer: C
Difficulty: Deeper
Question: 8f
Objective: Explain why 802.11i Wi-Fi security is not enough for WLANs.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
36) Selecting locations for access points first involves ________.
A) laying out circles of a chosen diameter in a diagram of the building
B) doing a wireless site survey
C) selecting locations that reflect organizational units
D) all of the above
Answer: A
Difficulty: Basic
Question: 9a
Objective: Discuss 802.11 WLAN management.
AACSB: Applying Information Technology
37) Site surveys should be done ________.
A) after the initial provisional placement of access points
B) periodically afterwards
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 9b
Objective: Discuss 802.11 WLAN management.
AACSB: Applying Information Technology, Application of Knowledge
38) A security might use SNMP Get commands to ________.
A) change an access point’s power
B) collect information to look for a rogue access point
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Basic
Question: 10a
Objective: Discuss 802.11 WLAN management.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
39) A security might use SNMP Set commands to ________.
A) change an access point’s power
B) collect information to look for a rogue access point
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 10a
Objective: Discuss 802.11 WLAN management.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
40) Centralized access point management ________.
A) increases management costs but provides better control
B) reduces management costs
Answer: B
Difficulty: Basic
Question: 10c
Objective: Discuss 802.11 WLAN management.
AACSB: Applying Information Technology, Application of Knowledge
41) Which is the correct formula for decibels?
A) 10 * P2/P1
B) 10 * (P2/P1)2
C) Log10(P2/P1)
D) none of the above
Answer: D
Difficulty: Basic
Question: 11a
Objective: If you have read the More Information box, “Expressing Power Ratios in Decibels,” be able to do so.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
42) Compared to an omnidirectional antenna, a dish antenna quadruples radiated power. How much is this change in decibels?
A) 6 dB
B) 9 db
C) 16 db
D) none of the above
Answer: A
Difficulty: Deeper
Question: 11b
Objective: If you have read the More Information box, “Expressing Power Ratios in Decibels,” be able to do so.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
43) An 8/1 increase in power corresponds to approximately ________ decibels.
A) 3
B) 6
C) 20
D) none of the above
Answer: D
Difficulty: Deeper
Question: 12b
Objective: If you have read the More Information box, “Expressing Power Ratios in Decibels,” be able to do so.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
44) A change in power from 2 mW to 17 mW corresponds to approximately ________ decibels.
A) 3
B) 9
C) 12
D) 20
Answer: B
Difficulty: Deeper
Question: 12c
Objective: If you have read the More Information box, “Expressing Power Ratios in Decibels,” be able to do so.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
45) A change in power from 2 mW to 205 mW corresponds to approximately ________ decibels.
A) 3
B) 9
C) 10
D) 20
Answer: D
Difficulty: Deeper
Question: 12d
Objective: If you have read the More Information box, “Expressing Power Ratios in Decibels,” be able to do so.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
46) A change in power from 100 W to 1 W corresponds to approximately ________ decibels.
A) 10
B) 20
C) -10
D) -20
Answer: D
Difficulty: Deeper
Question: 12e
Objective: If you have read the More Information box, “Expressing Power Ratios in Decibels,” be able to do so.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
47) IoT transmissions usually involve ________.
A) high transmission speeds
B) low transmission distances
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Basic
Question: 13a
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology
48) The ________ standard dominates IoT transmission today.
A) Bluetooth
B) Zigbee
C) Wi-Fi direct
D) none of the above
Answer: D
Difficulty: Basic
Question: 13b
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
49) A group of devices on a desk that communicate wirelessly is called a ________.
A) LAN
B) WAN
C) MAN
D) PAN
Answer: D
Difficulty: Basic
Question: 14a
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology
50) Classic Bluetooth provides transmission speeds of ________.
A) 3 Mbps
B) 24 Mbps
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Deeper
Question: 14b
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
51) Bluetooth ________ is likely to be used most of the time in IoT transmission.
A) HDR
B) HS
C) LE
D) COIN
Answer: C
Difficulty: Deeper
Question: 14c
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
52) Bluetooth Low Energy ________.
A) provides much higher speed than other IoT transmission standards
B) provides energy to power the other device
C) does not require batteries
D) conserves battery power
Answer: D
Difficulty: Basic
Question: 14d
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
53) Bluetooth LE normally uses ________ for power.
A) a coin battery
B) wall power
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 14e
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
54) Bluetooth uses ________ operation.
A) all-to-all
B) point-to-multipoint
C) one-to-all
D) one-to-one
Answer: D
Difficulty: Basic
Question: 15a
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
55) If a master has multiple slaves, Bluetooth will use ________ operation.
A) all-to-all
B) point-to-multipoint
C) one-to-all
D) one-to-one
Answer: D
Difficulty: Basic
Question: 15b
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
56) Which of the following is true of Bluetooth?
A) A master may have multiple slaves.
B) A slave may have multiple masters.
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 15c
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
57) If Wi-Fi supported the basic printing profile, ________.
A) documents could be printed without downloading drivers
B) printer drivers would be downloaded automatically
C) printing would use two layers of drivers
D) none of the above
Answer: A
Difficulty: Basic
Question: 16a
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
58) For a game joystick, you would use the ________ Bluetooth profile.
A) basic printing
B) SYNCH
C) human interface device
D) mouse
Answer: C
Difficulty: Basic
Question: 16b
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
59) Bluetooth LE ________.
A) uses about 0.1 to 0.5 watts
B) assumes that transmissions will be infrequent
C) has terse connection openings
D) all of the above
Answer: D
Difficulty: Deeper
Question: 17a
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
60) In Bluetooth LE, ________ notify other Bluetooth devices that it is available.
A) advertisements
B) beacons
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Deeper
Question: 17b
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
61) In Bluetooth LE, ________ provide information.
A) advertisements
B) beacons
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Deeper
Question: 17c
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
62) A Bluetooth profile for sending a command from a wireless light switch to a lamp is probably a ________ profile.
A) classic Bluetooth
B) Bluetooth LE
C) both A and B
D) neither A nor B
Answer: B
Difficulty: Deeper
Question: 17d
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
63) When two devices communicate using NFC, how close must they be?
A) a few inches
B) up to 5 feet
C) up to 10 feet
D) up to 50 feet
Answer: A
Difficulty: Basic
Question: 18a
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology
64) Passive RFID chips get the power needed to transmit from ________.
A) wall power
B) coin batteries
C) the electricity that always flows through the air in small quantities
D) none of the above
Answer: D
Difficulty: Deeper
Question: 18c
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
65) NFC transmission standards have been set for ________.
A) its service band
B) mesh networking
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 18d
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
66) Wi-Fi direct ________ uses access points.
A) always
B) usually
C) rarely
D) never
Answer: D
Difficulty: Basic
Question: 19
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
67) Zigbee is designed to be used in a(n) ________ network.
A) one-to one
B) hierarchical
C) multipoint
D) ad hoc
Answer: D
Difficulty: Basic
Question: 20a
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
68) In Zigbee, ad hoc networking’s mesh is operated by ________.
A) Zigbee Controllers
B) Zigbee End Devices
C) Zigbee Routers
D) Zigbee Hives
Answer: C
Difficulty: Basic
Question: 20b
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
69) A lamp in a Zigbee network would probably be a ________.
A) client
B) server
C) router
D) none of the above
Answer: D
Difficulty: Deeper
Question: 20b
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
70) Which of the following is an ad hoc networking protocol?
A) Zigbee
B) Z-Wave
C) both A and B
D) neither A nor B
Answer: C
Difficulty: Basic
Question: 20c
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
71) ________ can operate in the 2.4 service band.
A) Zigbee
B) Z-Wave
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Deeper
Question: 20c
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Application of Knowledge
72) In IoT device transmission, published distance limits are relevant for ________.
A) legitimate users
B) hackers
C) both A and B
D) neither A nor B
Answer: A
Difficulty: Basic
Question: 21a
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
73) The state of security in IoT transmission standards is ________.
A) strong
B) weak
C) mixed
D) flawless
Answer: C
Difficulty: Basic
Question: 21b
Objective: Compare peer-to-peer local wireless technologies for the Internet of Things.
AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge
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