1. (TCO 1) When an RF signal moves from one medium to another of a different density, the signal actually bends instead of traveling in a straight line. This is known as _____. (Points : 5)
reflection
absorption
refraction
scattering
Question 2.2. (TCO 3) A loss of 10 decibels means that _____% of the power has been lost in mW. (Points : 5)
10
30
90
100
Question 3.3. (TCO 2) Which is the lowest frequency commonly used for unlicensed radio frequency connections? (Points : 5)
700 GHz
800 Hz
800 GHz
700 MHz
Question 4.4. (TCO 1) Which affects the WLAN coverage pattern? (Points : 5)
Wireless network protocols
Objects that interfere with the RF signal
Notebook operating systems
Skill of the person conducting the site survey
Question 5.5. (TCO 4) The Microsoft Windows operating system is an example of _____ standards. (Points : 5)
de jure
consortia-created
request for comments (RFC)
de facto
Question 6.6. (TCO 5) In an infrastructure network, the beacon interval is normally set to _____ ms, although it can be modified. (Points : 5)
1
10
100
1,000
Question 7.7. (TCO 6) A free space optics (FSO) connection between two buildings is most impeded by the presence of which weather condition? (Points : 5)
Fog
Rain
Mist
Wind
Question 8.8. (TCO 7) Most industry experts recommend one access point for no more than _____ users if they are performing basic e-mail, light web surfing, and occasionally transferring medium-sized files. (Points : 5)
10
30
50
100
Question 9.9. (TCO 8) _____ was designed to address WEP vulnerabilities with a minimum of inconvenience. (Points : 5)
IEEE 802.11i
TGi
Dynamic WEP
WPA
Question 10.10. (TCO 8) RC4 is a _____ cipher that accepts keys up to 128 bits in length.(Points : 5)
stream
key
block
logical
Page 2
Question 1.1. (TCO 9) A common source of interference in 802.11b and g networks would be which? (Points : 5)
Fluorescent light
Convection oven
Microwave oven
Electric stapler
Question 2.2. (TCO 10) Which is an application of RFID technology? (Points : 5)
Cards with embedded RFID chips are widely used as electronic cash in casinos.
Major retailers are requiring that cases and pallets of merchandise shipped to their warehouses from large vendors have an RFID tag affixed.
Beginning in 2005, U.S. passports will have an RFID tag embedded in the document.
All of the above
Question 3.3. (TCO 6) Remote wireless _____ are ideal solutions for connecting sites, such as satellite offices, remote campus settings, or temporary office locations, when the sites are separated by obstacles, such as bodies of water, freeways, or railroads, which make using a wired connection impractical or very expensive. (Points : 5)
routers
bridges
clients
gateways
Question 4.4. (TCO 7) Access points are typically mounted on a _____ to reduce interference from surrounding objects. (Points : 5)
ceiling
floor
window
door
Question 5.5. (TCO 8) _____ engineering relies on tricking or deceiving someone to give a hacker access to a system. (Points : 5)
Brute force
Temporal key integrity protocol (TKIP)
Social
Probe request
Question 6.6. (TCO 9) A _____ is the tool used to visualize a radio frequency signal. (Points : 5)
fragment
packet sniffer
spectrum analyzer
All of the above
Question 7.7. (TCO 1) A _____ transmission means that a frame is sent from one sender to multiple receivers with a single “transmit” operation. (Points : 5)
single
unicast
multicast
multiple
Question 8.8. (TCO 8) Following authentication, if the access point accepts the wireless device, it reserves memory space in the AP and establishes a(n) _____ ID for it. (Points : 5)
association
device
member
authentication
Question 9.9. (TCO 5) When an AP accepts or rejects a wireless device, it sends a(n) _____ frame. (Points : 5)
association request
association response
disassociation
reassociation
Question 10.10. (TCO 1) How does OFDM work? (Points : 5)
Signals are broken up and the parts are sent in parallel.
The same signal is sent on multiple channels.
One signal is sent twice on the same channel.
A signal is sent over a wired network at the same time as the wireless network
(TCO 3) How does an antenna work? (Points : 20)
Question 2.2. (TCO 4) What are the responsibilities of the FCC? (Points : 20)
Question 3.3. (TCO 5) Describe the history, frequency band, and supported data rates of the IEEE 802.11b standard. (Points : 20)
Question 4.4. (TCO 6) Differentiate the fixed WiMax and mobile WiMax technologies. (Points : 20)
Question 5.5. (TCO 1) How does OFDM mitigate WLAN transmission problems caused by multipath distortion? (Points : 20)
Question 6.6. (TCO 2) There are several factors that may result in RF signal loss. List and describe three of them. (Points : 20)
1. (TCO 7) When should an 802.11a network be installed instead of an 802.11g network? (Points : 20)
Question 2.2. (TCO 8) What is a dictionary attack? (Points : 20)
Question 3.3. (TCO 10) Amanda’s car is equipped with hands-free cellular calling based on the Bluetooth wireless standard. Explain how this device helps Amanda during her commute.
Correct Answer: (Points : 20)
Question 4.4. (TCO 9) Differentiate narrowband interference and all-band interference on a WLAN. Name two methods that one could adopt to remedy a narrowband interference. Name two methods that could help curb the all-band interference generated by bluetooth devices. (Points : 20)
