Deck 22: Wireless Networking

Question 1

At what frequency range does the 802.11a-based wireless technology operate?

A)7 GHz
B)5 GHz
C)3 GHz
D)1 GHz

Answer 1

B

Question 2

Where is the location for an omni-directional antenna in your home or office?

A)On the roof
B)Adjacent to the outside wall
C)Near the center
D)In a basement

Answer 2

C

Question 3

What is the theoretical maximum range of the 802.11a wireless networking standard?

A)150 feet
B)200 feet
C)250 feet
D)300 feet

Answer 3

A

Question 4

What method enables you to limit access to your wireless network based on the physical, hard-wired address of the units' wireless NIC?

A)OFDM
B)MAC address filtering
C)SSID broadcasting
D)NTFS Permissions

Question 5

At what frequency range do the 802.11b- and 802.11g-based wireless technologies operate?

A)2.4 GHz
B)3.4 GHz
C)4.4 GHz
D)5.4 GHz

Question 6

Which protocol does WPA use to provide a new encryption key for every sent packet?

A)SSH
B)WEP
C)SSL
D)TKIP

Question 7

Which standard has a security flaw that allows a hacker to guess an eight-digit code?

A)WPA
B)WEP
C)WPS
D)WPA2

Question 8

What centrally connects wireless network nodes in the same way that a hub connects wired Ethernet PCs?

A)EAP
B)WAP
C)WEP
D)WPA

Question 9

Which wireless networking standard supports data throughput of up to 11 Mbps?

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

Question 10

What wireless network mode can quickly be used to share files and printers without a WAP?

A)Ad hoc
B)Infrastructure
C)Multiple access
D)WAN

Question 11

What 802.11n feature increases its range and speed?

A)MIMO
B)CSMA/CA
C)SSID
D)WPA-PSK

Question 12

What method do wireless networks use to determine if other nodes are currently broadcasting?

A)CSMA/CD
B)CSMA/CA
C)Dipole antennae
D)MIMO

Question 13

Which feature allows you to plug a single Ethernet cable into the WAP to provide both power and a network connection?

A)PoE
B)SID
C)ESSI
D)PoW

Question 14

How many bits does WEP encryption use to scramble data packets?

A)20
B)30
C)40
D)50

Question 15

What is another name for the Service Set Identifier parameter?

A)Network address
B)Network name
C)Network path
D)Network protocol

Question 16

What is a wireless service area that has been extended by adding more WAPs?

A)EWAP
B)SID
C)BSS
D)EBSS

Question 17

What is the speed at which the 802.11g wireless technology transfers data?

A)11 Mbps
B)20 Mbps
C)54 Mbps
D)64 Mbps

Question 18

Which standard or protocol represents a security improvement in WPA2 over WEP and WPA?

A)EAP
B)IrDA
C)AES
D)TCP/IP

Question 19

Most WAPs support filtering, in which data packets that do not contain the appropriate address are rejected.What kind of address is filtered?

A)MAC
B)SSID
C)WEP
D)WPA

Question 20

Which standard or protocol provides a security improvement that WPA addresses over WEP?

A)EAP
B)IrDA
C)SWAP
D)TCP/IP

Question 21

Where should you look for firmware updates on older WAPs?

A)CMOS
B)Device Manager
C)Windows update
D)Manufacturer's Web site

Question 22

What WAP settings should be adjusted in an environment with overlapping Wi-Fi signals?

A)Channel and frequency
B)SSID and MAC filtering
C)Default user name and password
D)Encryption protocols

Question 23

What WPA/WPA2 encryption version uses a RADIUS server for secure authentication?

A)WPA/WPA2-PSK
B)SSIDv3
C)WPA/WPA2-Enterprise
D)SSIDv4

Question 24

What is the first step in choosing an optimal location for an access point?

A)Software upgrades
B)Market research
C)Site survey
D)Interference control

Question 25

With ______________, you only need to plug a single Ethernet cable into the WAP to provide both power and a network connection.

Question 26

Wireless devices operate using the ______________ networking scheme.

Question 27

What is the gain from a typical WAP?

A)1 dB
B)2 dB
C)10 dB
D)12 dB

Question 28

What should you check first when troubleshooting wireless connectivity issues?

A)Wireless configuration utility
B)Wireless NIC link light
C)Encryption settings
D)Dipole gain

Question 29

Wireless access points can act as ______________ and Internet routers.

Question 30

What type of wireless network is very small and designed for "quick-and-dirty" jobs?

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

Question 31

What is the maximum distance of a Class 3 Bluetooth device?

A)100 meters
B)10 meters
C)1 meter
D)5 meters

Question 32

What is the standard straight-wire omnidirectional wireless antenna called?

A)Omnipole
B)Unipole
C)Dipole
D)Bipole

Question 33

What wireless technology is often used to connect headsets to smartphones?

A)WPA-Enterprise
B)WPA-PSK
C)AES
D)Bluetooth

Question 34

What frequencies does 802.11n use?

A)2.4 and 5 GHz
B)11 and 54 MHz
C)5 and 24 GHz
D)2.4 and 11 MHz

Question 35

What enables you to connect to the Internet through a network-aware smartphone, tablet, or other mobile device?

A)802.11b
B)802.11n
C)MAC filtering
D)Cellular wireless network

Question 36

Wireless networks running in ______________ mode use one or more wireless access points to connect the wireless network nodes to a wired network segment.

Question 37

What is the maximum capacity for data transfer between infrared devices?

A)1 Mbps
B)2 Mbps
C)3 Mbps
D)4 Mbps

Question 38

Two or more wireless nodes communicating in ad hoc mode form what's called a(n) ______________.

Question 39

What should you open up to troubleshoot a suspected hardware problem?

A)BIOS
B)Windows Device Manager
C)Windows update
D)Task Manager

Question 40

What process needs to be undertaken to enable Bluetooth devices to create a secure connection?

A)Pairing
B)Duplicating
C)Searching
D)Finding

Question 41

Products that adhere to the 802.11b standard provide a maximum of ______________ channels in the 2.4 GHz band.

Question 42

When adjusting the radio power levels of your wireless antenna, decrease the radio power until you can get reception at the furthest point ______________ the target network space.

Question 43

Linux, Mac OS X, and Windows fully supports the IEEE ______________ standard, more commonly known as Wi-Fi ______________ Access 2, to lock down wireless networks.

Question 44

______________ is a handy way of creating a type of "accepted users" list to limit access to your wireless network.

Question 45

WPS has a security flaw that allows a hacker to repeatedly guess the ______________ -digit numeric code.

Question 46

You can install multiple WAPs to permit "______________" between one WAP's coverage area and another's.

Question 47

The 802.11g standard is backward-compatible with ______________.

Question 48

The developers of Wi-Fi created ______________ a standard included on most WAPs and clients to make it easier for end users to configure secure connections.

Question 49

IrDA links are direct ______________ and are susceptible to interference.

Question 50

Changing the default ______________ for a WAP is the first step in setting up a new wireless network.

Question 51

WPA2 uses the ______________ to provide a secure wireless environment.

Question 52

A service area that is extended by adding WAPs is called a(n) _____________.

Question 53

WPA uses the ______________, which provides a new encryption key for every sent packet.

Question 54

The maximum distance between infrared devices is ______________.

Question 55

To protect wireless systems, tell the WAP not to _______________ the SSD.

Question 56

Communication through infrared devices is implemented via the ______________ protocol.

Question 57

Like 802.11g, ______________ WAPs can run in the 2.4-GHz ISM band, supporting earlier, slower 802.11b/g devices.

Question 58

Infrared is designed to make a point-to-point connection between two devices only in ______________ mode.

Question 59

The IEEE 802.11 wireless Ethernet standard defines methods by which devices may communicate using ______________ radio waves.

Question 60

Today's wireless world is dominated by ______________ technologies, in particular the 802.11 (Wi-Fi) standards.

Question 61

A(n) ______________ enables you to connect to the Internet through a network-aware smartphone, tablet, or other mobile device.

Question 62

What is an Extended Basic Service Set (EBSS)?

Question 63

Name the two wireless network modes.

Question 64

What is Power over Ethernet (PoE)?

Question 65

______________ is designed to create small wireless networks preconfigured to do very specific jobs.

Question 66

Antennas and the signals that they transmit have an electromagnetic property called ______________.

Question 67

A(n) ______________ enables Ethernet network communication using IrDA.

Question 68

With ______________ 802.11n WAPs, you can choose which band to put 802.11n traffic on, either 2.4 GHz or 5 GHz.

Question 69

The standard straight-wire antennas that provide most omni-directional function are called ______________ antennas.

Question 70

What are the three methods that wireless networks use to secure access to the network itself and secure the data being transferred?

Question 71

Communication will fail if the encryption level, key, and ______________ do not match on the wireless client node.

Question 72

An antenna strengthens and focuses the radio frequency (RF) output from a WAP.The ratio of increase called ______________ is measured in decibels (dB).

Question 73

Because nodes on a wireless network can't easily detect collisions, which protocol is an option to transfer data over a network?

Question 74

The IEEE organization has made first-generation Bluetooth the basis for its 802.15 standard for wireless ______________.

Question 75

What is the purpose of a wireless access point?

Question 76

What are the two wireless network modes?

Question 77

What is an Independent Basic Service Set (IBSS)?

Question 78

How is data transmitted in a wireless network?

Question 79

Explain what the CA means in CSMA/CA.

Question 80

Devices such as ______________ and ______________ also use the 2.4-GHz frequency and can cause a great deal of interference.