Deck 23: Wireless Networking

Question 1

Which of the following represents a security improvement in WPA2 over WEP and WPA?

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

Answer 1

C

Question 2

What is the central connection point for a wireless network working in infrastructure mode?

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

Answer 2

B

Question 3

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

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

Answer 3

C

Question 4

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

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

Question 5

What enables you to connect to the Internet through a PDA,cell phone,or smartphone?

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

Question 6

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 7

Which of the following wireless networking standards supports data throughput of up to 11 Mbps?

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

Question 8

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

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

Question 9

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

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

Question 10

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 11

What 802.11n feature increases its range and speed?

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

Question 12

What is another name for the Service Set Identifier parameter?

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

Question 13

What is a very small wireless network preconfigured to do a specific job called?

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

Question 14

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 15

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

A) Network interface card
B) Network operating system
C) Service Set Identifier
D) Wireless access point

Question 16

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 17

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

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

Question 18

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 19

Which of the following provides a security improvement that WPA addresses over WEP?

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

Question 20

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

Question 21

What should you consider decreasing on a WAP to prevent others from receiving your wireless signal?

A) Encryption strength
B) Power
C) Range
D) Number of clients

Question 22

What allows you to specifically allow or deny access to a WAP?

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

Question 23

Wireless Zero Configuration was first introduced with which operating system?

A) Windows 2000
B) Windows XP
C) Windows Vista
D) Windows 7

Question 24

All of the following use the 2.4 GHz and 5.8 GHz bands EXCEPT:

A) Industry
B) Scientific
C) Medical
D) Military

Question 25

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 26

When using an omni-directional antenna,where is the best place to keep it in your home or office?

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

Question 27

What type of wireless network can quickly be used to share files,folders,and printers without a WAP?

A) Ad hoc
B) Infrastructure
C) Enterprise
D) WAN

Question 28

Which of the following will allow 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 29

What is the gain from a typical WAP?

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

Question 30

Which of the following does WPA use to provide a new encryption key for every sent packet?

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

Question 31

Today,which of the following is not considered a good security practice when setting up a WAP?

A) Change the default SSID.
B) Change the default admin user name and password.
C) Enable WEP encryption.
D) Disable SSID broadcasting.

Question 32

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

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

Question 33

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

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

Question 34

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 35

All of the following methods can be used to increase a wireless network's range EXCEPT:

A) Reduce transmitting power
B) Install multiple WAPs
C) Install a stronger replacement WAP
D) Install a signal booster

Question 36

A wireless service area that can be extended by adding more WAPs is called:

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

Question 37

Assuming the wireless NIC is able to pass packets,what would you check next to resolve connectivity issues?

A) Wireless configuration utility
B) WAP setting
C) Administrative tools
D) Manufacturer's Web site

Question 38

Which of the following standards is now considered obsolete?

A) 802.11a
B) 802.11
C) 802.11g
D) 802.11n

Question 39

Where should you look for WAP firmware updates?

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

Question 40

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 41

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

Question 42

IrDA links are direct ____________________ and are susceptible to interference.

Question 43

Wireless devices operate using the ____________________ networking scheme.

Question 44

WPA2 uses the ____________________ for encryption.

Question 45

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

Question 46

____________________ is a handy way of creating a type of "accepted users" list to limit access to your wireless network and Internet routers.

Question 47

A (n)____________________ combines an infrared transceiver with an Ethernet NIC and translates the IrDA protocol into an Ethernet signal.

Question 48

Communication between infrared devices is enabled in ____________________ mode.

Question 49

Devices such as ____________________ and ____________________ can cause a great deal of interference.

Question 50

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

Question 51

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

Question 52

The maximum distance between infrared devices is ____________________.

Question 53

Wireless access points can act as high-speed ____________________ and Internet routers.

Question 54

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

Question 55

A valid user name and password may be required while configuring encryption using the ____________________ or ____________________ wireless protocols.

Question 56

To protect wireless systems,SSID ____________________ is turned off.

Question 57

To protect wireless systems,the default SSID name should be ____________________.

Question 58

Wireless networks using infrared light are limited to those that use the ____________________ protocol.

Question 59

The 802.11g standard is backward-compatible with ____________________.

Question 60

Microsoft Windows fully supports the IEEE ____________________ standard,more commonly known as ____________________,to lock down wireless networks.

Question 61

You should place a WAP with an omnidirectional antenna in the ____________________ of an area.

Question 62

Installing a wireless __________ can give you even more power.

Question 63

A (n)____________________ enables you to connect to the Internet through a network-aware PDA,cell phone,or smart phone.

Question 64

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

Question 65

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

Question 66

When using a (n)__________ antenna,keep it near the center of your home or office.

Question 67

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

Question 68

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

Question 69

Almost all wireless headsets are now ____________________.

Question 70

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

Question 71

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 72

To prevent others from picking up your wireless signal,__________ the radio power until you can get reception at the furthest point inside your home or office,but not outside.

Question 73

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

Question 74

A WPS-capable WAP will have a (n)__________ -digit numeric code printed on the device.

Question 75

You can easily add wireless Ethernet and Bluetooth capabilities using ___________________ adapters.

Question 76

If your WAP is configured for 128-bit encryption,all nodes must use ____________________.

Question 77

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

Question 78

__________ was invented to replace the nest of cables that currently connects most PCs to their various peripheral devices-keyboard,mouse,printer,speakers.

Question 79

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

Question 80

__________ is by far the most widely adopted wireless networking type today.