IS3120 CHAPTER 6

Question 1

A server that provides authentication, authorization, and accounting for a network

Answer 1

AAA server

Question 2

A system that uses a public key to encode data and a private key to decrypt data

Answer 2

Asymmetric encryption system

Question 3

A WLAN network that includes an access point

Answer 3

Basic Service Set (BSS)

Question 4

The number of nodes and the amount of shared bandwidth available to each node and coverage

Answer 4

Capacity

Question 5

A modulation scheme defined in the IEEE 802.11b standard

Answer 5

Complementary code keying (CCK)

Question 6

The attempt to provide the same level of signal strength to all network nodes.

Answer 6

Coverage

Question 7

Application used to verify that the sender of a document, image, or message is a trusted source.

Answer 7

Digital signature

Question 8

A modulation technique included in the IEEE 802.11x standard

Answer 8

Direct sequence spread spectrum (DSSS)

Question 9

Adapts the nominal bit rate of a wireless node to better use a communication channel.

Answer 9

Dynamic rate shifting (DRS)

Question 10

A WLAN that links together two BSS networks with a common linking device.

Answer 10

Extended Service Set (ESS)

Question 11

An authentication method that is used in WLAMs and point-to-point connections

Answer 11

Extensible Authentication Protocol (EAP)

Question 12

A peer-to-peer WLAN designation for each node in an ad hoc mode network.

Answer 12

Independent Basic Service Set (IBSS)

Question 13

The 2.4 GHz bandwidth allocated to unlicensed use and used for 802.b/g/n

Answer 13

Industrial, scientific, and medical (ISM) bands

Question 14

Cisco Systems’ version of EAP. It supports dynamic key encryption and mutual authentication

Answer 14

Lightweight Extensible Authentication Protocol (LEAP)

Question 15

Prevents an attacker from intercepting, modifying, and retransmitting message packets by checking the integrity of a packet using the ICV.

Answer 15

Message integrity check (MIC)

Question 16

The propagation that results in RF signals reaching the receiving antenna at different times and by two or more different paths.

Answer 16

Multipath

Question 17

An antenna technology that uses multiple antennas (to receive and transmit) at both ends of a transmission.

Answer 17

Multiple-input and multiple-output (MIMO)

Question 18

A process through which a node gains access to a wireless network running WEP and access rules that are not encrypted

Answer 18

Open System Authentication (OSA)

Question 19

A frequency-division multiplexing (FDM) scheme that applies a digital multi-carrier modulation method

Answer 19

Orthogonal frequency division multiplexing (OFDM)

Question 20

A technique that can modulated both analog and digital transmissions

Answer 20

Quadrature amplitude modulation(QAM)

Question 21

A process through which a node gains access to a WLAN running the WEP protocol

Answer 21

Shared Key Authentication (SKA)

Question 22

A system of encryption that applies the same exact key to encrypt and decrypt data

Answer 22

Symmetric encryption system

Question 23

A security protocol used in the IEEE 802.11x wireless standard.

Answer 23

Temporal Key Integrity Protocol (TKIP)

Question 24

The 5 GHz frequency band used by IEEE 802.11a devices

Answer 24

Unlicensed National Information Infrastructure (UNII)

Question 25

A standard developed by the WiFi Alliance to certify protocols, software, and equipment standards

Answer 25

Wireless fidelity (WiFI)

Question 26

1. The network security standard for all IEEE networks is ___. 1. IEEE 802.11a 2. IEEE 802.11i 3. IEEE 802.1x 4. IEEE 802.3

Answer 26

IEEE 802.1x

Question 27

2. What did WPA add to improve on the WEP protocol? 1. EAP 2. EAPOL 3. RC4 4. TKIP

Answer 27

TKIP

Question 28

3. Which of the following security threats has the primary objective of overloading a network's resources, resulting in the resources becoming unavailable to the network's users? 1. Denial of service 2. Intrusion 3. Interception 4. ARP spoofing

Answer 28

Denial of service

Question 29

4. ___ is used to provide access to a network to users and networking devices. 1. Authorization 2. Accounting services 3. Authentication 4. Certification

Answer 29

Authentication

Question 30

5. A DoS attack is NOT a common security threat to a network. TRUE OR FALSE

Answer 30

FALSE

Question 31

6. What type of protocol does the 802.1x standard prescribe for authentication? 1. TKIP 2. EAP 3. AAA 4. DRS

Answer 31

EAP

Question 32

7. The interference picked up by an RF antenna from other nearby transmitters is ___. 1. EMI 2. Metal box 3. Crosstalk 4. RFI

Answer 32

RFI

Question 33

8. The capability of a WLAN to support a certain number of wireless nodes is called its ___. 1. Capacity 2. Coverage 3. Mode 4. Site survey

Answer 33

Capacity

Question 34

9. What is the designation of a node in an ad hoc WLAN? 1. ESS 2. BSS 3. IBSS 4. SSID

Answer 34

IBSS

Question 35

10. What is the process used to verify the capability of a site or a space to support a WLAN called? 1. Coverage 2. Capacity 3. Site survey 4. Mode

Answer 35

Site survey

Question 36

11. What is the topology of a WLAN that includes only a single access point? 1. BSS 2. ESS 3. IDSS 4. RSSI

Answer 36

BSS

Question 37

12. What is the purpose of a site survey? 1. To perform acceptance testing on a new WLAN installation 2. To ensure that a WLAN design provides sufficient signal strength and bandwidth for all planned stationary or mobile nodes 3. To ensure that each node on a WLAN is functioning properly 4. To verify an existing WLAN meets the requirements for connecting to a wireless WAN

Answer 37

To ensure that a WLAN design provides sufficient signal strength and bandwidth for all planned stationary or mobile nodes

Question 38

13. The distance between a WLAN node and the AP to which it is associated determines the throughput the node experiences. TRUE OR FALSE

Answer 38

TRUE

Question 39

14. What characteristic of the bandwidth of a WLAN is affected by the number of nodes associated with a particular access point? 1. Bandwidth 2. Login 3. Security level 4. Priority

Answer 39

Bandwidth

Question 40

15. Which of the following does not create a serious barrier to the transmission of RF signals? 1. Concrete 2. Leaded glass 3. Open space 4. Water

Answer 40

Open space