Wireless Chapter 9 Quiz

You are using a wireless client adapter with a site survey utility and a notebook computer to perform a manual site survey in a very small office building. Which values are important to record to verify proper RF coverage for the location? (Choose two.) A) Signal loss B) Propagation loss C) SNR D) Packet retries E) Signal strength

C) SNR E) Signal strength

How many access points can be co-located without channel reuse in the same RF area to maximize total system throughput while minimizing RF interference in an IEEE 802.11g/n network?Two* ThreeFourSix A) Four B) Two C) Three D) Six

C) Three

Which data encryption/authentication method is identified in the original IEEE 802.11 standard? A) CCMP B) EAP C) WEP D) TKIP E) AES

C) WEP

Which guidelines are recommended when performing a manual site survey? (Choose two.) A) Client device configuration B) Equipment purchase C) Walk-through of location D) Spectrum analysis E) Predictive analysis

C) Walk-through of location D) Spectrum analysis

When considering the use of antennas for WLAN deployment during a site survey, which antenna could be tested to verify proper coverage for a long hallway or corridor? A) Parabolic dish B) High-gain omnidirectional C) Yagi D) Low-gain omnidirectional

C) Yagi

A newly configured wireless intrusion prevention system will _____. A) Automatically monitor the network for potential attacks B) Require an administrator to manually shut down a rouge access point C) Require a network administrator to monitor for intrusions D) Automatically notify a network administrator regarding a firmware upgrade

A) Automatically monitor the network for potential attacks

Co-channel interference is caused by access points on _____. A) Channels 1 and 1 B) Channels 1 and 2 C) Channels 1, 6 and 11 D) Channels 1 and 6

A) Channels 1 and 1

The following image shows which type of antenna? A) Parabolic dish B) Yagi C) Omnidirectional D) Patch/Panel

C) Omnidirectional

You have been hired by a company to perform a WLAN site survey in a multitenant building. You discover numerous access points on channels 1, 6, and 11. To optimize the new deployment, what recommendation could you make to the customer? Assume that all new hardware will be purchased and backward compatibility is not required. A) Configure the access points to operate in the 5 GHz band B) Configure the access points to automatic channel selection for the 2.4 GHz ISM band C) Perform a spectrum analysis to find space in the 2.4 GHz band D) Perform a predictive modeling site survey to determine which channels to use

A) Configure the access points to operate in the 5 GHz band

IEEE 802.11a/b/g/n/ac devices use what type of communication? A) Half-duplex B) Full-duplex C) Full-diplex D) Half-diplex

A) Half-duplex

You are performing a protocol analysis in order to determine potential interference from other WLANs in the immediate area of the site survey. You discover several WLANs that can potentially cause interference with the proposed installation. Which technology in use would not have an impact on the 802.11g/n wireless network you are surveying for? A) OFDM B) DSSS C) ERP-OFDM D) FHSS E) PBCC

A) OFDM

Wireless bridges must be configured with _____ and _____ (Choose two.) A) The same RF channel B) Channel scanning C) Wired Equivalent Privacy D) The same SSID E) A null SSID

A) The same RF channel D) The same SSID

The IEEE 802.1X standard identifies the authenticator as another term for the _____ in wireless networking. A) RADIUS server B) Access point C) EAP server D) Client device

B) Access point

A main objective of a WLAN site survey is to determine _____ and _____. (Choose the best two options.) A) Wiring closet locations B) Access point locations C) Areas of RF interference D) Security implementations E) Applications to be used

B) Access point locations C) Areas of RF interference

You are a network consultant hired to perform a manual site survey for a small office building. The wireless network to be installed will use data and voice. For backward compatibility, the customer needs to support 2.4 GHz equipment. To provide the highest QoS for the voice application, you recommend that the received signal strength be a minimum of _____ for a data rate of 54 Mbps. A) -20 dBm B) -67 dBm C) -76 dBm D) -25 dBm

B) -67 dBm

Devices compliant with which two amendments to the IEEE standard use multiple radio chains and multiple antennas? (Choose two.) A) 802.11g B) 802.11n C) 802.11/ac D) 802.11a E) 802.11b

B) 802.11n C) 802.11/ac

You are a technical support engineer and provide help desk support for the network in a manufacturing company. You receive a call from the sales manager who wants to know how power save operations should be set up on her notebook computer to optimize the system performance. The notebook computer is plugged into an AC power source and rarely used on battery. Which mode would you recommend her to set on the wireless adapter? A) Association mode B) Active mode C) Passive mode D) Power save mode

B) Active mode

A basic service set (BSS) consists of how many access points? A) At least four B) At least one C) Zero D) At least two

B) At least one

The IEEE 802.11 association process happens after which phase? A) Reauthentication B) Authentication C) Deauthentication D) Distribution

B) Authentication

A self-contained intelligent access point is _____ A) Thin B) Autonomous C) Controller-managed D) Heavyweight

B) Autonomous

Which two channels could be used so that the access points do not interfere with each other in an 802.11g/n wireless network? (Choose three.) A) Channel 4 and channel 7 B) Channel 2 and channel 8 C) Channel 1 and channel 5 D) Channel 3 and channel 9 E) Channel 6 and channel 11

B) Channel 2 and channel 8 D) Channel 3 and channel 9 E) Channel 6 and channel 11

An azimuth chart shows which RF radiation pattern? A) Positive B) Horizontal C) Negative D) Vertical

B) Horizontal

When an IEEE 802.11g WLAN consists only of wireless client stations, the network is operating as which type of basic service set? A) Active B) Independent C) Passive D) Infrastructure

B) Independent

Which two of the following options are available for Wi-Fi Protected Access 2 (WPA 2.0)? A) Protection mode B) Personal mode C) Enterprise mode D) Professional mode E) WPA 2 mode

B) Personal mode C) Enterprise mode

You are a wireless network administrator monitoring the reports for a recently installed wireless intrusion prevention system. You receive an alert notifying you of high levels of RF activity detected from an access point operating as a sensor and currently set to channel 6. Which problem could be causing the alert? (Choose two.) A) RF encryption attack B) RF DoS attack C) Misconfigured client workstation D) Interference from a neighboring access point E) RF deauthentication storm

B) RF DoS attack D) Interference from a neighboring access point

What devices, tools, or programs can be used in a manual site survey? (Choose two.) A) Predictive site analyzer B) Spectrum analyzer C) Authentication analyzer D) Passive scanning utility E) Association analyzer

B) Spectrum analyzer D) Passive scanning utility

How many access points can be co-located without channel reuse in the same RF area to maximize total system throughput while minimizing RF interference in an IEEE 802.11g/n network? A) Four B) Three C) Six D) Two

B) Three

In computer network terminology, the definition of half-duplex is closest to which of the following? A) One-way communication one way at a time B) Two-way communication one way at a time C) One-way communication only D) Two-way communication both directions simultaneously

B) Two-way communication one way at a time

When an RF signal passes between media of different densities and may change speeds and bend, the behavior is known as: A) Diffraction B) Reflection C) Refraction D) Scattering

C) Refraction

When performing a manual site survey, choose the best way to identify areas that lake RF coverage A) Mark them with tape so that they can be located at a later time B) Use a camera to take a photograph and document it in the report C) Document the areas on the floor plans or blueprints D) Show the site manager the areas that lack coverage

C) Document the areas on the floor plans or blueprints

An azimuth chart shows which RF radiation pattern? A) Positive B) Negative C) Horizontal D) Vertical

C) Horizontal

How many nonoverlapping channels are available in the unlicensed 2.4 GHz ISM band? A) 11 B) 6 C) 3 D) 1

C) 3

A point-to-point wireless link requires what percent of the Fresnel zone to be clear in order to be considered to have an acceptable RF line of sight? A) 20 B) 0 C) 60 D) 40

C) 60

You have been hired by a company to perform a manual site survey. When explaining the difference between a manual and predictive modeling site survey, you let the customer know the advantages and disadvantages of each. A manual site survey has which advantage? A) No hardware required B) Facility access not required C) Accuracy D) Speed

C) Accuracy

The manual site survey consists of which possible methods? (Choose two.) A) Scanning B) Spectrum C) Active D) Passive E) Packet

C) Active D) Passive

You need to perform a site survey for a small real estate office that currently has no wireless network. Which factors must be considered as part of the site survey? A) Packet analysis B) Environmental conditions C) Correct antenna selection D) Spectrum analysis

C) Correct antenna selection

The length of a WEP key is typically _____ or _____. A) 5-bit, 10-bit B) 192-bit, 256-bit C) 13-bit, 26-bit D) 64-bit, 128-bit E) 128-bit, 256-bit

D) 64-bit, 128-bit

When a device associates to an access point during a site survey, it is performing which type of survey? A) Predictive B) Required C) Passive D) Active

D) Active

Which of the following is true of a predictive modeling survey? A) It helps you choose the manufacturer's equipment to be used for the WLAN B) It takes more time than a passive survey to get accurate results C) It finds areas of interference from neighboring WLANs D) It takes less time than a passive survey to get accurate results

D) It takes less time than a passive survey to get accurate results

When using a predictive modeling site survey approach, which of the following is true about manual verification? A) Manual verification is always required B) Manual verification never has to be performed C) Manual verification should be performed only at the customer's request D) Manual verification should be performed, but is not required

D) Manual verification should be performed, but is not required

Non-Wi-Fi interference for an 802.11g/n network can be caused by _____ and _____. (Choose two.) A) Digital TV systems B) 802.11b networks C) AM radios D) Microwave ovens E) Cordless phones F) Radar systems

D) Microwave ovens E) Cordless phones

The capacity of an access point is dependent on which factors? (Choose two.) A) Frequency B) Channel reuse C) Co-location D) Number of devices E) Software applications

D) Number of devices E) Software applications

According to the IEEE 802.11 standard, an extended service set (ESS) consists of how many interconnected basic service sets? A) Four or more B) Three or more C) Two or more D) One or more

D) One or more

A type of site survey that is software-based, requires minimum time on site, and takes into consideration the attenuation value of materials such as the type of walls and doors is _____. A) Optional B) Active C) Passive D) Predictive

D) Predictive

A spectrum analyzer can be used to view what? A) Data rates B) Wireless packets C) Association frames D) RF

D) RF

The following image shows which type of antenna? A) Dipole-directional B) Omnidirectional C) Highly directional D) Semidirectional

D) Semidirectional

What technology is used to send WLAN data over a wireless medium using many subcarrier frequencies? A) Narrowband B) Wideband C) Spectral masking D) Spread-spectrum E) Wireless broadband

D) Spread-spectrum

You are a network engineer tasked with performing a site survey for a multiple-channel architecture (MCA) system in a three-story building. Which characteristic must be considered while performing a site survey? A) All omnidirectional antennas should be vertically polarized B) Each floor should be treated as an individual site survey C) Multiple floors require the same channel D) The channel plan should take all three floors into consideration

D) The channel plan should take all three floors into consideration

HR/DSSS devices operate in which frequency range? A) 5.352 GHz UNII B) 5.725 GHz ISM C) 5.250 GHz UNII D) 5.750 GHz UNII E) 2.400 GHz ISM

E) 2.400 GHz ISM

Which security solution is mandatory for client devices in order to be considered Wi-Fi Protected Setup certified? A) TKIP B) WPA C) PBC D) WEP E) PIN

E) PIN