Deck 7: Wireless Lans II

Question 1

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 1

B

Question 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 2

D

Question 3

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 3

B

Question 4

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

Question 5

In 802.11i,protection is provided between the client and the ________.

A) access point
B) switch
C) router
D) server

Question 6

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

Question 7

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

Question 8

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

Question 9

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

Question 10

802.11i provides ________.

A) confidentiality
B) message integrity
C) both A and B
D) neither A nor B

Question 11

What is the strongest security protocol for 802.11 today?

A) 802.11s
B) 802.11X
C) WPA
D) 802.11i

Question 12

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

Question 13

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.

Question 14

The Wi-Fi Alliance calls 802.11i ________.

A) WEP
B) WPA
C) WPA2
D) none of the above

Question 15

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

Question 16

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

Question 17

Nearly all public Wi-Fi hotspots encrypt your transmissions.

Question 18

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

Question 19

In 802.11i PSK mode,the pass phrase should be at least ________ characters long.

A) 8
B) 12
C) 20
D) 128

Question 20

Which offers stronger security?

A) WPA
B) 802.11i
C) both A and B offer equally strong security.

Question 21

You can test whether an evil twin attack has taken place against your wireless client.

Question 22

802.11i can defeat rogue access points.

Question 23

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.

Question 24

An evil twin access point is usually ________.

A) a database
B) a laptop computer
C) a calculator
D) a spreadsheet

Question 25

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

Question 26

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

Question 27

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

Question 28

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

Question 29

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

Question 30

Centralized access point management ________.

A) increases management costs but provides better control
B) reduces management costs

Question 31

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

Question 32

What initial authentication mode does 802.11i use?

A) 802.1X
B) PSK
C) both A and B
D) neither A nor B

Question 33

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

Question 34

A rogue access point is usually created by ________.

A) an employee
B) an external attacker
C) the IT security department
D) an evil twin

Question 35

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

Question 36

A VPN provides ________.

A) link security
B) end-to-end security
C) comprehensive security
D) none of the above

Question 37

A ________ is an unauthorized internal access point.

A) binky
B) shadow
C) rogue
D) none of the above

Question 38

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

Question 39

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

Question 40

Employees who set up rogue access points usually have malicious motives.

Question 41

Classic Bluetooth provides transmission speeds of ________.

A) 3 Mbps
B) 24 Mbps
C) both A and B
D) neither A nor B

Question 42

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

Question 43

A change in power from 2 mW to 17 mW corresponds to approximately ________ decibels.

A) 3
B) 9
C) 12
D) 20

Question 44

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

Question 45

IoT transmissions usually involve ________.

A) high transmission speeds
B) low transmission distances
C) both A and B
D) neither A nor B

Question 46

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

Question 47

A change in power from 2 mW to 205 mW corresponds to approximately ________ decibels.

A) 3
B) 9
C) 10
D) 20

Question 48

Bluetooth ________ is likely to be used most of the time in IoT transmission.

A) HDR
B) HS
C) LE
D) COIN

Question 49

A group of devices on a desk that communicate wirelessly is called a ________.

A) LAN
B) WAN
C) MAN
D) PAN

Question 50

Bluetooth uses ________ operation.

A) all-to-all
B) point-to-multipoint
C) one-to-all
D) one-to-one

Question 51

For a game joystick,you would use the ________ Bluetooth profile.

A) basic printing
B) SYNCH
C) human interface device
D) mouse

Question 52

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

Question 53

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

Question 54

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

Question 55

The ________ standard dominates IoT transmission today.

A) Bluetooth
B) Zigbee
C) Wi-Fi direct
D) none of the above

Question 56

Bluetooth LE normally uses ________ for power.

A) a coin battery
B) wall power
C) both A and B
D) neither A nor B

Question 57

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

Question 58

An 8/1 increase in power corresponds to approximately ________ decibels.

A) 3
B) 6
C) 20
D) none of the above

Question 59

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

Question 60

A change in power from 100 W to 1 W corresponds to approximately ________ decibels.

A) 10
B) 20
C) -10
D) -20

Question 61

Wi-Fi direct ________ uses access points.

A) always
B) usually
C) rarely
D) never

Question 62

________ can operate in the 2.4 service band.

A) Zigbee
B) Z-Wave
C) both A and B
D) neither A nor B

Question 63

NFC transmission standards have been set for ________.

A) its service band
B) mesh networking
C) both A and B
D) neither A nor B

Question 64

In Zigbee,ad hoc networking's mesh is operated by ________.

A) Zigbee Controllers
B) Zigbee End Devices
C) Zigbee Routers
D) Zigbee Hives

Question 65

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

Question 66

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

Question 67

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

Question 68

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

Question 69

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

Question 70

Zigbee is designed to be used in a(n)________ network.

A) one-to one
B) hierarchical
C) multipoint
D) ad hoc

Question 71

In Bluetooth LE,________ provide information.

A) advertisements
B) beacons
C) both A and B
D) neither A nor B

Question 72

The state of security in IoT transmission standards is ________.

A) strong
B) weak
C) mixed
D) flawless

Question 73

A lamp in a Zigbee network would probably be a ________.

A) client
B) server
C) router
D) none of the above