Certified Wireless Network Administrator PW0-100 Test
Question: 1.Which of these are NOT valid Service Set types as defined by the IEEE 802.11 standard?
A. BSSB. IBSSC. ESSD. DSS
Answer: D
Explanation:There are three types of Service Set: Basic Service Set (BSS), Extended Service Set (ESS), andIndependent Basic Service Set (IBSS).(Reference: CWNA Study Guide, p. 218.)
Question: 2.Which of the following is true of RF propagation communication?
A. The range of RF transmissions increases with frequency.B. Low RF signal strength does not mean poor communications.C. Low signal quality does not necessarily mean poor communications.D. Due to the distances involved, sunspots do not affect RF communications.
Answer: B
Explanation:A. The range of RF transmissions increases with greater transmitting power, not frequency. (CWNA Study Guide, p. 261)B. Low RF signal strength will propagating in short range. (CWNA Study Guide, p. 261)C. Low signal quality might occur when the RF waves scatter on uneven surface. (CWNA Study Guide, p. 52)D. CWNA Study Guide did not mention anything about the sunspots and its effects.
Question: 3.A point-to-point link between two buildings requires at least two of which device?
A. Workgroup BridgeB. Access PointC. Wireless BridgeD. Ethernet Converter
Answer: A, B, C
Explanation:Workgroup Bridge, Access Point, and Wireless Bridge with high-powered antennas can be usedto establish a point-to-point link between two buildings. (CWNA Study Guide, Chapter 4:Infrastructure Devices)
Question: 4.Which type of the following are directional antennas? Select all that apply,
A. YagiB. Parabolic DishC. PatchD. DipolePage 1 of 191Answer: A, B, C, D
Explanation:Yagi and Patch Antennas are the samples of semi-directional antennas. Dipole antenna is anomni-directional antenna. Parabolic Dish is one type of highly directional antenna.(CWNA Study Guide, p. 136-142)
Question: 5.Which of the following can cause Multipath? (Choose three)
A. Body of waterB. Flat stretch of earthC. Metal roofD. MountainsE. TreesF. Concrete walls
Answer: A, B, C
Explanation:Body of water, flat stretch of earth, and metal roof are considered to be smooth surface that cancause Multipath.Reference should be Pages 394 & 400 CWNA Study Guide 3rd Edition or Pages 328 & 334CWNA Study Guide 2nd Edition
Question: 6.Which of the following wireless LAN devices represent "legacy devices"? (Choose all that apply.
A. PCI CardB. PC CardC. ISA CardD. USB adapterE. Serial converter
Answer: C
Explanation:PCI Card, PC Card, USB adapter and serial converter are not considered to be legacy devices.Don't get tricked by serial converter. Serial device is considered to be legacy device, not theconverter itself.
Question: 7.Which of these is required as part of a WLAN site survey? (Choose two)
A. Lightning arrestor.B. Network manager interview.C. Mobile access point.D. VPN server.
Answer: B, C
Explanation:Network manager interview and mobile access point are the requirements in order to have asuccessful WLAN site survey. (CWNA Study Guide, p. 349)Page 2 of 191Question: 8.Which of these items should be included in a RF Site Survey Report? (Choose two)
A. Cost estimated of equipment for a wireless LAN.B. RF coverage measurements and drawings.C. A list of potential interference sources.D. Interviews with company executives on the requirements for a WLAN.E. Security solution suggestions.
Answer: B, C
Explanation:RF coverage measurements and drawings & a list of potential interference sources should beincluded in a RF Site Survey Report. Interviews with company executives on the requirements fora WLAN should be taken place BEFORE taking a site survey. Cost estimated of equipment for awireless LAN should be calculated AFTER taking a site survey. (CWNA Study Guide, Chapter 11:Site Survey Fundamentals)
Question: 9.The "hidden node" problem can be caused by?
A. Interfering obstacles between clients.B. Clients broadcasting with too much power.C. Access points broadcasting with too little power.D. Clients being too close together.
Answer: A
Explanation:Hidden node is a problem where two nodes can connect to an access point but they cannotconnect to each other due to some obstacles or a large amount of distance between them.(CWNA Study Guide, p. 272)
Question: 10.Antenna Diversity compensates for which of these common wireless LAN problems?
A. Near/FarB. Hidden NodeC. MultipathD. Adjacent Channel Interference
Answer: C
Explanation:In order to troubleshooting multipath successfully, antenna diversity is needed to compensate thecertain conditions. (CWNA Study Guide, p. 270)
Question: 11.Which authentication, authorization, and accounting () support options does the 802.11standard specify?
A. RADIUSB. LDAPC. TACACS+Page 3 of 191D. None of the above
Answer: D
Explanation:802.11i (not 802.11) standard supports.
Question: 12.To achieve 54 Mbps, 802.11a uses which type of data modulation?
A. QFSKB. BPSKC. 64QAMD. CCK
Answer: C
Explanation:On page 221 of the CWNA study Guide (2nd edition) it is mentioned that the 802.11a standardspecifies the use of the ODFM technology. ODFM is the secret behind how 802.11a gets up to 54Mbps data rates. In the answers given ODFM is not mentioned so this is something to thinkabout.
Question: 13.The IEEE 802.11 standard contains specifications on which of the following technologies?
A. 2.4 GHz FHSS, 2.4 GHz DSSS, InfraredB. 2.4 GHz DSSS, 2.4 GHz FHSSC. 2.4 GHz DSSS, BluetoothD. 2.4 GHz FHSS, Infrared
Answer: A
Question: 14.Installing an extension cable to an antenna in a wireless LAN will have what effect?(Choose two)
A. The coverage distance of the antenna will be decreased.B. The equivalent isotropically radiated power will be decreased.C. There will be no effectD. The RF signal power at the antenna input will be increased.
Answer: A, B
Question: 15.Multipath can cause which of these effects at the receiving antenna? (Choose all that apply)
A. Increased signal amplitude.B. Decreased signal amplitude.C. Null signal.D. Signal distortion.
Answer: A, B, C, D
Question: 16.Page 4 of 191Which two of the following security issues exist with 802.11?
A. No support for encryption.B. No support for roaming.C. Vulnerable to disassociation attacks.D. No central authentication, authorization, or accounting support.
Answer: C, D
Explanation:disassociation service - An IEEE 802.11 term that defines the process a station or access pointuses to notify that it is terminating an existing association.
Question: 17.Identify which of the following are appropriate uses of an IEEE 802.11 wireless LAN.(Choose all that apply)
A. Mobile access into the company network from a PDA.B. "Core" role in an enterprise network.C. Building-to-building bridging as a MAN solution.D. Delivering data from applications that require full-duplex communications between nodes.
Answer: A, C
Explanation:A: The most common component on any wireless network is the PCMCIA card. More commonlyknown as "PC cards", these devices are used in notebook (laptop) computers and PDAs.C: In addition to wireless LANs (WLANs), wireless personal area networks (WPANs), wirelessmetropolitan area networks (WMANs), and wireless wide area networks (WWANs) are also takingadvantage of spread spectrum technologies. WPANs use Bluetooth technology to take advantageof very low power requirements to allow wireless networking within a very short range. WWANsand WMANs can use highly directional, high gain antennas to establish long-distance, high-speedRF links with relatively low power.
Question: 18.The anomaly that occurs when RF signals propagate from a transmitter bounce off objects andthen cause problems at the receiver is known as:
A. Fresnel ZoningB. MultipathC. Microwave interferenceD. Diffraction
Answer: B
Explanation:
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