Test
1.0 RF Fundamentals
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Preguntas del test (40)
1What is a measure of the antenna’s focus.
- Abeamwidth
- Bfrequency
- Ccycle
- Dwave
2Number of times a signal completes a cycle 1 second.
- Afrequency
- Bcycle
- Crotation
- Drate
3A signal rising from the center line, falls through the center line, and rises again to meet the center line.
- Arate
- Bcycle
- Cfrequency
- Damplitude
4The most commonly used frequency unit and is nothing other than one cycle per second.
- Amiliwatts
- Bhertz
- Cdecibel
- Dvolts
5What two main frequency ranges used for wireless LAN communication
- A5 GHz
- B2.4 MHz
- C2.4 GHz
- D4.0 MHz
6Technique which uses specific numbers and is assigned to a specific frequency.
- Achannel
- Bwave
- Cscheme
- Dfrequency
7The frequency range needed to transmit a signal, used by a single channel or a single RF signal.
- Aelectric band
- Bbandwidth
- Camplitude
- Dphase
8The signal is a measure of shift in time relative to the start of a cycle. Phase is normally measured in degrees, where 0 degrees is at the start of a cycle, and one complete cycle equals 360 degrees.
- APhase
- BWave
- CFrequency
- Damplitude
9A measure of physical distance that a wave travels over one complete cycle.
- Aphase
- Bbandwidth
- Cwavelength
- Dfrequency
10 The height from the top peak to the bottom peak of the signal’s waveform,
- Aphase
- Bwavelength
- CFrequency
- DAmplitude
11The strength of an RF signal is usually measured by its power, in ________.
- AVolts
- BAmps
- Cwavelength
- DWatts
12Define Term - DRS.
- ADefense sequence spectrum
- BDynamic rate shifting
- CDefine Rate Scale
- DDoes Rate System
13Define Term - MCS
- Amobile controller system
- Bmodulation and coding schemes
- Cmetric call system
- Dnone
14In a BSS, if you disable lower data rates
- Aeffectively reduces the usable size of the AP’s cell
- Bradio frequency (RF) footprint remains the same
- Cno changes
- Dhigher throughput
15 To provide robust wireless coverage to an ever-increasing area, you should:
- AAdd more power
- BAdd additional APs to build an ESS that covers more area.
- Cremove clients from BSS
- DTune the cell size based on data rates and performance
16The process of moving an association from one AP to the next, so that the wireless connection is maintained as the client moves.
- AFlexConnect
- BRoaming
- CUplink
- DBSS
17You should lay the cells out, which the pattern is seamless, leaving no holes in coverage.
- AHoneycomb
- BIsolation from interference
- CBSA
- DSmall Space
18Alternating channels to avoid overlap is commonly
- AChannel Reuse
- BHoneycomb
- CThree-dimension space
- DFlow Pattern
19Needed to automatically determine the location of wireless devices.
- Areal-time location services (RTLS)
- Bmodulation and coding (MCS)
- CRadio Resource Meter (RRM)
- DDynamic Channel Allocation (DCA)
20Site survey tools can be grouped into three basic categories based on their installation base:
- AStandalone
- BOpen-Standard
- CServer-based
- DCloud-based
21Three basic types of site survey that you can perform as you plan and deploy a wireless network:
- APredictive survey
- BPassive survey
- CActive survey
- DStandalone
22Analyze the environment to select AP locations when no APs have been deployed yet;
- APredictive survey
- BMCS
- CHoneycomb
- DPassive survey
23What tool to detect and identify any sources of interference you might encounter in the wireless coverage area.
- Aspectrum analyzer
- BMapping Tool
- CFluke Networks
- DRRM
24Which tools perform predictive site survey:
- AEkahua Site Survey
- BFluke Networks AirMAgnet Survey Pro
- CPI
- DMetaGeek Chanalyzer
25To measure the effects of any existing APs in an area,
- APassive
- BActive
- CSpectrum Analyzer
- DRRM
26AP is self-contained; it is equipped with both wired and wireless hardware so that the wireless client associations can be terminated onto a wired connection locally at the AP.
- AAutonomous AP
- BFlexConnect
- CLAP
- DConverge Network
27To help manage more and more autonomous APs as the wireless network grows, AP management function is pushed out of the enterprise and into the Internet cloud.
- ACloud-based Architecture
- BAutonomous
- CFlexConnect
- DCentral APs
28This logical plan used traffic used to control, configure, manage, and monitor the AP itself
- AControl plane
- BData plane
- CMCS
- DCentral Routing
29This logical plan used end-user traffic passing through the AP.
- AData Plane
- BACI
- CControl Plane
- DTrunk
30In a split-MAC Architectures which of the following are management functions:
- ARF Management
- BMAC Management
- CEncryption
- DRF Transmit/Receive
31In a split-MAC Architectures which of the following are management functions:
- AClient Authentication
- BQOS
- CSecurity Management
- DMAC Management
32LAP gets its name because the code image and the local intelligence are stripped down, or lightweight, compared to the traditional autonomous AP.
- AVerdadero
- BFalso
33The management functions are usually performed on a access switch, Split-MAC Architectures
- AVerdadero
- BFalso
34Tunneling protocol makes this all possible by encapsulating the data between the LAP and WLC within new IP packets.
- ACAPWAP
- BRRM
- CWAP-TLS
- DTrunk
35Messages are authenticated, encrypted, and used for exchanges that are used to configure the LAP and manage its operation over port 5246.
- ACAPWAP control messages
- BRoaming Control
- CCAPWAP data
- DTrunk
36Every LAP and WLC must also authenticate each other with digital certificates. An X.509 certificate is preinstalled in each device when it is purchased.
- AVerdadero
- BFalso
37What is a band and number of channels for 2.4 GHz range?
- A4.075 - 4.875 and 1 thru 14
- B4.125 - 4.805 and 3 thru 14
- C2.412 - 2.484 and 1 thru 14
- D2.125 - 2.805 and 3 thru 14
38The channel spacing is known as the
- Achannel separation
- Buplink
- Cchannel bandwidth
- Dnumber of frequencies
39According to power measurements, which are absolute powers
- Awatts
- Bmilliwatts
- Ccentimeters
- Damps
40The decibel (db) is a handy function used logartihms to compare absolute measurement.
- AVerdadero
- BFalso
Información
- Descripción
- 1.1 Describe the propagation of radio waves 1.2 Interpret RF signal measurements 1.3 Explain the principles of RF mathematics 1.4 Describe Wi-Fi antenna characteristics
- Autor
- Christopher Griffin
- Idioma
- English
- Visitas
- 520
- Etiquetas
- Valoración
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