Deck 6: Connecting Through a Wireless Network

Question 1

Which of the following technologies is used for short distance wireless communications such as within an office,and is harder to tap into without someone noticing?

A)infrared
B)microwave
C)ultraviolet
D)gamma ray

Answer 1

A

Question 2

In which of the following system authentication methods can any two stations authenticate with each other?

A)open
B)closed
C)selective
D)binary

Answer 2

A

Question 3

Devices for the 802.11a standard are the most widespread of the 802.11 wireless standards.

Answer 3

False

Question 4

Line-of-sight radio transmissions have an advantage of being able to go through tall land masses.

Question 5

Bluetooth uses ____,which means that packets are sent in alternating directions using time slots.

A)code division multiplexing
B)time division duplexing
C)time division multiplexing
D)code division duplexing

Question 6

The 802.11i standard uses ____ for creating random encryption keys from one master key.

A)AES
B)PSK
C)TKIP
D)RSN

Question 7

Which of the following is a device that sends out and picks up radio waves and is used by access points and wireless NICs?

A)antenna
B)transmitter
C)receiver
D)wireless modem

Question 8

Which of the following standards supports three transmission technologies on the 2.4 GHz band?

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

Question 9

Which of the following uses datagrams and wireless packet switching to send data through radio waves?

A)CB radio
B)digital radio
C)amateur radio
D)packet radio

Question 10

Wireless networks are impervious to man-in-the-middle attacks.

Question 11

What type of notice is sent when a station wants to disconnect from another station?

A)denial
B)deauthentication
C)deactivation
D)termination

Question 12

Which of the following orbit at a distance of between 435 and 1000 miles above the Earth's surface and are used for both broadband computer and satellite phone communications?

A)LEO satellites
B)geosynchronous satellites
C)terrestrial satellites
D)WiMax satellites

Question 13

The transmission speeds in the 802.11 group of wireless standards correspond to the Physical layer of the OSI model.

Question 14

Which of the following is a wireless topology that employs two or more access points to form a multiple-cell wireless LAN?

A)IBSS
B)star
C)IAPP
D)ESS

Question 15

At which layer of the OSI model do both priority-based access and Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)function?

A)Transport
B)Physical
C)Network
D)Data Link

Question 16

Which of the following is a value that defines a logical network for all devices that belong to it?

A)WEP encryption key
B)service set identifier
C)preshared key
D)shared key

Question 17

WPA2 is backward compatible with WPA but cannot be used along with WEP.

Question 18

One ____ represents a radiated alternating current or emission of one cycle per second.

A)Angstrom
B)Hertz
C)nanometer
D)rpm

Question 19

WiMAX is another name for the IEEE 802.16 standard for wireless ____.

A)WANs
B)LANs
C)MANs
D)DANs

Question 20

Infrared can be broadcast in a single direction or in all directions,using a(n)____ to transmit and a photodiode to receive.

A)antenna
B)LED
C)laser
D)satellite dish

Question 21

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
converted a computer's digital signal to an analog signal that was amplified by a transceiver and broadcast through an antenna.

Question 22

What are five needs that wireless networks are designed and installed to accommodate?

Question 23

An area with public wireless access is called a ____,which is simply a location that provides a public access point to users.

A)hotspot
B)cell
C)nexus
D)hub

Question 24

___________________ communications occur in discrete units with a start bit at the front and a stop bit at the back.

Question 25

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
promotes wireless networking for LANs

Question 26

Which wireless networking standards can operate in the 5 GHz frequency band?

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

Question 27

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
defined by 802.1x to allow only authenticated communications.

Question 28

The ________________________________________ topology consists of ad hoc peer-to-peer communication between WNICs on individual computers.

Question 29

A(n)____________________ satellite maintains an orbital position that is stationary with respect to the earth.

Question 30

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
means that transmissions hop among 79 frequencies for each packet that is sent.

Question 31

Which of the following is a standard for 802.11 networks? (Choose all that apply.)

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

Question 32

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
device that can optionally attach to a cabled network and that services wireless communications between WNICs and the cabled network.

Question 33

A(n)____________________ transmission goes from point to point,following the surface of the Earth,rather than bouncing off the atmosphere to skip across the country or continents.

Question 34

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
communication method used by the IEEE 802.11R standard.

Question 35

Which of the following are improvements of the 802.11n standard versus the 802.11a and 802.11g standards? (Choose all that apply.)

A)operates at up to 54 Mbps
B)uses MIMO
C)utilizes WEP for security
D)uses aggregation of frames and ACK responses

Question 36

Which of the following are steps you can take to increase 802.11 performance? (Choose all that apply.)

A)place the access point against a wall
B)use WNICs with internal antennas
C)avoid placing access points in metal cabinets
D)use the 5 GHz band for 802.11n access points

Question 37

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
transmits the signal between three antennas,one of which is on a satellite in space.

Question 38

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
characteristic in 802.11 standard that helps wireless devices take interference into account.

Question 39

Match each term with the correct statement below.
a.Wi-Fi Alliance
b.controlled port
c.access point
d.satellite microwave
e.frequency hopping
f.terminal node controller (TNC)
g.automatic repeat request (ARQ)
h.pulse position modulation (PPM)
i.spread spectrum technology
spreads a transmission over one or more adjoining frequencies,using greater bandwidth to transmit the signal.

Question 40

In ____________________ access,the access point device also functions as a point coordinator.

Question 41

What is a service set identifier?

Question 42

How does CSMA/CA work in a wireless network?

Question 43

Describe spread spectrum technology.

Question 44

Identify three uses for satellite networks.

Question 45

Describe the two operational modes of the current version of high-performance radio local area network (HiperLAN2).

Question 46

Describe the WiMAX technology.

Question 47

What is an omnidirectional antenna and how is it used?

Question 48

How does the Inter-Access Point Protocol (IAPP)enable roaming communications?

Question 49

How does Direct Sequence Spread Spectrum (DSSS)work?