Deck 18: Wireless Network Security

Question 1

Handheld PDAs pose a security risk in terms of both eavesdropping and spoofing.

Answer 1

True

Question 2

In an)__________ situation,a wireless device is configured to appear to be a legitimate access point,enabling the operator to steal passwords from legitimate users and then penetrate a wired network through a legitimate wireless access point.

A)malicious association
B)identiy theft
C)network injection
D)ad hoc network

Answer 2

A

Question 3

The integration service enables transfer of data between a station on an IEEE 802.11 LAN and a station on an integrated IEEE 802.x LAN.

Answer 3

True

Question 4

The term used for certified 802.11b products is ___________ .

A)WAP
B)Wi-Fi
C)WEP
D)WPA

Question 5

The use of encryption and authentication protocols is the standard method of countering attempts to alter or insert transmissions.

Question 6

The use of 802.1X cannot prevent rogue access points and other unauthorized devices from becoming insecure backdoors.

Question 7

Wireless networks,and the wireless devices that use them, introduce a host of security problems over and above those found in wired networks.

Question 8

The DS can be a switch,a wired network,or a wireless network.

Question 9

The principal threats to wireless transmission are eavesdropping, altering or inserting messages,and disruption.

Question 10

The actual method of key generation depends on the details of the authentication protocol used.

Question 11

___________ and links,such as personal network Bluetooth devices,barcode readers,and handheld PDAs,pose a security risk in terms of both eavesdropping and spoofing.

A)DoS
B)Accidental association
C)Nontraditional networks
D)Ad hoc networks

Question 12

The layer of the IEEE 802 reference model that includes such functions as encoding/decoding of signals and bit transmission/reception is the _________ .

A)physical layer
B)control layer
C)logical link layer
D)media access layer

Question 13

You should allow only specific computers to access your wireless network.

Question 14

Sensors and robots,are not vulnerable to physical attacks.

Question 15

The pairwise master key is derived from the group key.

Question 16

The function of the __________ is to on transmission assemble data into a frame,on reception disassemble frame and perform address recognition and error detection,and govern access to the LAN transmission medium.

A)transmission layer
B)logical layer
C)media access control layer
D)physical layer

Question 17

IEEE 802.11 defines seven services that need to be provided by the wireless LAN to achieve functionality equivalent to that which is inherent to wired LANs.

Question 18

MAC spoofing occurs when an attacker is able to eavesdrop on network traffic and identify the MAC address of a computer with network privileges.

Question 19

IEEE 802.11 is a standard for wireless LANs.

Question 20

Security policies for mobile devices should assume that any mobile device will not be stolen or accessed by a malicious party.

Question 21

The specification of a protocol along with the chosen key length is known as a __________ .

A)extended service
B)distribution system
C)cipher suite
D)RSN

Question 22

To certify interoperability for 802.11b products an industry consortium named the __________ was formed.

Question 23

The __________ layer is responsible for detecting errors and discarding any frames that contain errors.

Question 24

The master session key is also known as the __________ key.

A)AAA
B)GTK
C)MIC
D)STA

Question 25

The smallest building block of a wireless LAN is a __________ which consists of wireless stations executing the same MAC protocol and competing for access to the same shared wireless medium.

Question 26

The first 802.11 standard to gain broad industry acceptance was _________.

A)802.11i
B)802.11a
C)802.11g
D)802.11b

Question 27

An __________ is a set of one or more interconnected BSSs and integrated LANs that appear as a single BSS to the LLC layer at any station associated with one of these BSSs.

Question 28

__________ is the primary service used by stations to exchange MPDUs when the MPDUs must traverse the DS to get from a station in one BSS to a station in another BSS.

Question 29

The __________ function is the logical function that determines when a station operating within a BSS is permitted to transmit and may be able to receive PDUs.

Question 30

The __________ layer keeps track of which frames have been successfully received and retransmits unsuccessful frames.

A)transmission
B)media access control
C)logical link control
D)physical layer

Question 31

A __________ is any device that contains an IEEE 802.11 conformant MAC and physical layer.

A)station
B)MPU
C)service data unit
D)MSDU

Question 32

A __________ attack occurs when an attacker continually bombards a wireless access point or some other accessible wireless port with various protocol messages designed to consume system resources.

Question 33

In simple terms,the wireless environment consists of three components that provide point of attack: the endpoint,the ______________,and the access point.

Question 34

In order to accelerate the introduction of strong security into WLANs,the Wi-Fi Alliance promulgated __________ as a set of security mechanisms for the Wi-Fi standard.

Question 35

The purpose of the discovery phase in the ___________ is for a STA and an AP to recognize each other,agree on a set of security capabilities,and establish an association for future communication using those security capabilities.

A)WPA
B)RSN
C)TKIP
D)WAE

Question 36

The __________ is the information that is delivered as a unit between MAC users.

A)MSDU
B)DS
C)MPDU
D)BSS

Question 37

Derived from the GMK,the _________ is used to provide confidentiality and integrity protection for multicast/broadcast user traffic.

Question 38

____________ can occur when a company's wireless LAN or wireless access points to wired LANs in close proximity and may create overlapping transmission ranges.A user intending to connect to one LAN may unintentionally lock on to a wireless access point from a neighboring network.

A)Network injection
B)Denial of service attacks
C)Man-in-the-middle attacks
D)Accidental association

Question 39

The PMK is used to generate the _________ which consists of three keys to be used for communication between a STA and AP after they have been mutually authenticated.

A)AAA Key
B)GTK
C)PTK
D)PSK

Question 40

The _________ is used to ensure the confidentiality of the GTK and other key material in the 4-Way Handshake.

A)MIC key
B)EAPOL-KEK
C)EAPOL-KCK
D)TK

Question 41

The MPDU exchange for distributing pairwise keys is known as the _________ which the STA and SP use to confirm the existence of the PMK,to verify the selection of the cipher suite,and to derive a fresh PTK for data sessions.

Question 42

Forming a hierarchy beginning with a master key from which other keys are derived dynamically and used for a limited period of time,__________ are used for communication between a pair of devices typically between a STA and an AP.

Question 43

The main threat involving wireless access points is unauthorized access to the network.The principal approach for preventing success is the __________ standard for port-based network access control.

Question 44

The IEEE 802.11 protocol stack consists of the logical link control layer,the medium access control layer,and the _________ layer.

Question 45

The MPDU authentication phase consists of three phases.They are: connect to AS,EAP exchange and _________ .