1 The ACU site survey tool can operate in which modes? (Select two.)repeater mode

stand-alone mode

passive mode

active mode

parallel mode2 What is the difference between higher gain antennas and lower gain antennas? (Select two.)

Higher gain antennas direct energy more precisely.

Higher gain antennas have narrower beamwidths.

Higher gain antennas have a greater chance of receiving interference.

Higher gain antennas have lower bandwidths.3 Which topics may be included in the Request for Proposal? (Select three.)

prices and payment options

workstations and servers specifications

an implementation plan

a network topology for the new design4 Which types of transmission medium are available for use by WLANs? (Select two.)

fiber-optic

infrared light

UTP

radio frequencies

STP5 Which statements describe the RF spectrum? (Select two.)

It encompasses both radio waves and microwaves.

Most of the frequencies in the spectrum are unlicensed.

It extends from about 9 MHz to thousands of GHz.

It is used heavily for communications.

The acronym stands for radiated frequency (RF).6 What are the effects of multipath interference? (Select two.)

distorted signals at the receiving end

increased coverage range

poor signal quality levels

enhanced data throughput

incorrect polarization

7 What is the best way to test the line-of-sight path when doing a site-to-site survey?visually

with a spectrum analyzer

both visually and with a spectrum analyzer

visually and with a Global Positioning System8 At which OSI layer or layers does a wireless AP operate?

Layer 1

Layers 1 and 2

Layer 2

Layers 2 and 39 What causes the Status LED to blink green in a 1200 series AP?

transmitting/receiving packets

no devices associated

general warning

no special meaning10 In the United States, how many nonoverlapping channels are there for the 802.11b standard?

three

four

seven

eight11 Which type of antenna is referenced as a base in a dBd rating?

plane

yagi

dipole

isotropic12 When using high gain omnidirectional antennas, what is helpful in reducing the poor coverage below the

antenna?diversity

polarization

amplifiers

downtilt13 For a standard survey, how much overlap is sufficient to provide transparent handoffs between APs?

10%

15%

20%

25%

30%14 Which two spread spectrum modulation techniques are used by WLANs? (Select two.)

FDSS

ODSS

DSSS

DFSS

FHSS15 Which type of antenna connectors are used by the Cisco Aironet Bridges?

polarized BNC

reverse TNC

polarized TNC

reverse BNC16 Which types of software should be installed on laptops to prevent harmful disruptions while they are operating

on public wireless networks? (Select two.)spectrum analyzer

antivirus

firewall

protocol analyzer

repair utility17 Which frequency spectrum do FHSS WLANs use in the United States?

83 Mhz around the 5 Ghz ISM band

83 Mhz around the 2.4 Ghz ISM band

900 Mhz around the 5 Ghz ISM band

900 Mhz around the 2.4 Ghz ISM band18 What does a wireless bridge associate with if it is configured as Root=ON?

clients and repeaters only

other Root=ON devices

Master bridge

no device since it is in maintenance mode19 When configuring the AP Radio Port Hardware setup page, which settings are recommended in situations where

communication is poor and many client devices are associating with the access point?low fragment threshold and high RTS threshold

high fragment threshold and high RTS threshold

high fragment threshold and low RTS threshold

low fragment threshold and low RTS threshold20 Which open standard operating system is licensed for use in many mobile computing devices?

Symbian

MS DOS

Windows XP

OS/221 Bit Flipping, Replay Attacks, and Weak IV collection are all considered attacks against which type of security?

WEP

LEAP

PEAP

IPSec22 What frequency or frequencies does the IEEE 802.11 standard utilize?

900 MHz

3.4 GHz

5.4 GHz

2.4 GHz and 5 GHz

900 MHz, 2.4 GHz and 5.4 GHz23 In a WLAN, what is the purpose of the common DS?

to allow communication between multiple BSSs thereby allowing mobile devices to roam without loss of connectivityto reduce the number of APs needed to provide reliable connectivity while roaming

to eliminate the need for connectivity to a wired network

to eliminate the need for station addressing when in roaming mode24 During a routine wireless benchmark inspection, the IT personnel of the bank discovered that the AP in the

lobby was transmitting at 60 mW. The AP connects to a 6-dBi gain omni-directional antenna through a cable with a 3-dB loss. What is the final power output radiated by the antenna element?

30 mW

60 mW

120 mW

180 mW25 What is the behavior of a wireless bridge when configured as a root bridge?

It associates and communicates with any wireless device on the network.

It associates and communicates only with other root bridges.

It associates and communicates with multiple non-root bridges but only a single root bridge.It associates and communicates with multiple non-root bridges but will not communicate with other root bridges.

26 What are the two methods used by wireless clients to connect to an AP according to the IEEE 802.11 standard? (Select two.)

open authentication

shared key authentication

private key authorization

closed authentication

restricted authentication27 Which command is used to set the parent AP for a repeater AP?

AP(config)# parent 10.0.0.1

AP(config-if)# parent 1 10.0.0.1

AP(config-if)# parent 1 abcd.1234.ab12

AP(config)# parent abcd.1234.ab1228 Which three power modes are available on a Wireless NIC? (Select three.)

CAM

FastCAM

PSP

FastPSP

FastAPA29 Which device decodes the various protocol layers in a recorded frame and presents them as readable

abbreviations or summaries?cable tester

network analyzer

spectrum analyzer

time domain reflectometer30 What are the keys to maintaining a problem-free network environment and having the ability to isolate and fix a

network fault quickly? (Select three).communication

data backup

documentation

planning

virus protection

fault tolerance

31 What is the best tool to use if there may be a radio interference problem?cable tester

gauss meter

spectrum analyzer

time domain reflectometer32 What are the three basic options for configuration on a Cisco Aironet 350 series bridge? (Select three.)

Web-browser interface

SNTP

CLI

CDP

SNMP

SSID33 Which type of threats originate from hackers who are more highly motivated and technically competent?

external

internal

structured

unstructured34 Which of the following statements are correct? (Select two.)

Longer cables lose more power than shorter ones.

Thick cables lose more power than thin ones.

Higher frequencies lose more power than lower ones.

Rigid cables lose more power than flexible ones.35 Cisco Aironet bridges operate at which layer of the OSI model?

physical

data-link

network

transport36 What is a good antenna to use with an AP to provide coverage for a long indoor hallway?

5.2 dBi Ground Plane

8.5 dBi Patch Wall

2.15 dBi Rubber Dipole

2.2 dBi Ceiling Mount37 What is the WEP key size specified in the 802.11 standard?

256 bit

64 bit and 128 bit

40 bit and 128 bit

40 bit38 How does an AP behave when the receive antenna is set to diversity?

It will use the antenna that receives the best signal.

It will use both antennas at the same time.

It will round-robin between the two antennas.

The AP will always use one antenna to transmit and the other to receive.39 When using the site survey tool, a specific mode causes the client adapter to actively send or receive low-level

RF packets to and from its associated AP and provides information on the success rate. Which mode accomplishes these functions?

repeater mode

stand-alone mode

passive mode

active mode

parallel mode40

In the graphic, which type of cable should be used at the arrow to protect the WLAN against a direct lightning strike?

coax

fiber-optic

Category 5

UTP

41 dBm is a reference to which unit of measure?milliWatt

microWatt

Watt

kiloWatt42 At which layer of the OSI model do wireless bridges and APs operate?

Layer 4

Layer 3

Layer 2

Layer 143 How wide of a band of frequencies is used by 802.11b DSSS?

5 Mhz

11 Mhz

22 Mhz

24Mhz44 When a WLAN is being designed to expand an existing LAN, what should be done during the design phase?

(Select three.)Select the carrier.

Learn about the current topology and physical structure.

Study the actual network performance.

Provide an estimation of costs for the new equipment needed.

Identify the links that must be replaced.45 Access points often have two antennas attached to them for diversity in signal reception. What are two purposes

of this diversity? (Select two.)helps prevent multipath distortion

helps increase signal strength

helps eliminate null coverage areas

helps prevent diffraction and scattering of the signal46 Why do APs have two antennas attached to them?

to increase coverage area

to provide diversity

to provide redundancy

to provide symmetry47 In addition to physically installing the client adapter card into the wireless station, what is needed for

functionality of the card?a universal client adapter software driver

an interoperability software patch

a client adapter driver with its corresponding AP driver

a client adapter software driver specific to the OS48 Most data collection devices operate at which speed?

1 Mbps

2 Mbps

5 Mbps

11 Mbps49 In DSSS technology, each data bit becomes a chipping sequence. How many chips per bit are used by the IEEE

802.11 standard?11

12

13

1550 In WLAN data transmission, what is the significance of having four different IFS intervals?

to increase the amount of data that can be transmitted at one time

to prevent collisions when accessing the wireless media

to resequence data units at the destination STA

to provide priority levels for access to the wireless media