I85PREP
⌘ K
ISED Basic study materials
ISED Basic study resources

ISED Basic practice questions

One question at a time. Build your ISED Basic understanding.

First 50 of 200 questions. Each one lists the choices, the correct answer, and an explanation. The checker at the top of this page saves progress in this browser when it is available.

Continue in the practice tool above to load more questions, 50 at a time.

Question 1Radio frequency fundamentals and spectrum concepts

Which unit is used to express the frequency of a radio signal as cycles per second?

  1. Decibel
  2. Hertz Correct answer.
  3. Watt
  4. Volt

Explanation

Frequency is the number of complete cycles of a periodic wave occurring each second, and the hertz is defined as one cycle per second. Watts measure power, decibels express ratios, and volts measure potential difference, so none of them describe cycles per second.

Question 2Radio frequency fundamentals and spectrum concepts

A radio wave completes 150,000,000 cycles every second. What is its frequency expressed in megahertz?

  1. 15 MHz
  2. 0.15 MHz
  3. 1500 MHz
  4. 150 MHz Correct answer.

Explanation

One megahertz equals one million hertz, so 150,000,000 Hz divided by 1,000,000 gives 150 MHz. Dividing by the correct power of ten is the key step; using 1000 or 10,000 instead of 1,000,000 produces the wrong answers.

Question 3Radio frequency fundamentals and spectrum concepts

As frequency increases, what happens to the wavelength of an electromagnetic wave travelling in free space?

  1. The wavelength stays the same.
  2. The wavelength increases in proportion.
  3. The wavelength decreases. Correct answer.
  4. The wavelength doubles at each octave.

Explanation

Wavelength equals the speed of light divided by frequency, so the two quantities are inversely related. A higher frequency therefore corresponds to a shorter wavelength, and the change is not a fixed doubling per octave.

Question 4Radio frequency fundamentals and spectrum concepts

A signal has a wavelength of 3 metres in free space. What is its approximate frequency?

  1. 300 MHz
  2. 1 MHz
  3. 10 MHz
  4. 100 MHz Correct answer.

Explanation

Using wavelength equals 300 divided by frequency in megahertz, a 3-metre wavelength corresponds to 300 divided by 3, which is 100 MHz. The shortcut works because the speed of light is about 300 million metres per second.

Question 5Radio frequency fundamentals and spectrum concepts

Which term describes the range of frequencies occupied by a modulated emission?

  1. Bandwidth Correct answer.
  2. Carrier offset
  3. Duty cycle
  4. Spurious domain

Explanation

Bandwidth is the width of the frequency range that an emission occupies, measured between the upper and lower limits where the signal energy falls to defined levels. Carrier offset, duty cycle and spurious domain describe other characteristics and do not define the occupied width.

Question 6Radio frequency fundamentals and spectrum concepts

Which statement correctly describes the relationship between a signal's power in watts and its level in decibels relative to one milliwatt?

  1. The dBm value is twenty times the logarithm to base ten of the power in milliwatts.
  2. The dBm value is the natural logarithm of the power in watts.
  3. The dBm value is the power in milliwatts divided by ten.
  4. The dBm value is ten times the logarithm to base ten of the power in milliwatts. Correct answer.

Explanation

Power expressed in dBm equals ten times the base-ten logarithm of the power in milliwatts. The factor of twenty applies to amplitude or voltage ratios, not to power ratios, and dBm is logarithmic rather than a simple division.

Question 7Radio frequency fundamentals and spectrum concepts

A transmitter's output is increased from 10 watts to 100 watts. What is the increase in decibels?

  1. 1 dB
  2. 20 dB
  3. 10 dB Correct answer.
  4. 100 dB

Explanation

A tenfold increase in power corresponds to ten times the base-ten logarithm of ten, which is 10 dB. Doubling power would be about 3 dB, and a hundredfold increase would be 20 dB.

Question 8Radio frequency fundamentals and spectrum concepts

Which of the following is a typical characteristic of radio waves in the very high frequency band compared with the high frequency band?

  1. They are more limited to line-of-sight paths. Correct answer.
  2. They penetrate seawater effectively.
  3. They propagate mainly by ionospheric sky-wave reflection.
  4. They generally require larger antennas for the same gain.

Explanation

VHF signals generally travel by line of sight and are only weakly refracted by the ionosphere, whereas HF relies heavily on ionospheric sky-wave propagation. Shorter VHF wavelengths also allow smaller antennas for a given gain, and VHF does not penetrate seawater effectively.

Question 9Radio frequency fundamentals and spectrum concepts

What is meant by the term spectrum in radiocommunication?

  1. The physical cable that connects a transmitter to its antenna
  2. The set of frequencies available for radiocommunication, treated as a shared natural resource Correct answer.
  3. The audio content carried by a broadcast program
  4. The list of licensed operators maintained by a regulator

Explanation

The radio spectrum is the range of electromagnetic frequencies usable for radiocommunication, and it is treated as a limited shared resource allocated among services. It is not a physical cable, an operator register, or the programme content being carried.

Question 10Radio frequency fundamentals and spectrum concepts

A receiver is tuned to 145.500 MHz. What is this frequency expressed in kilohertz?

  1. 14,550 kHz
  2. 1,455,000 kHz
  3. 1,455 kHz
  4. 145,500 kHz Correct answer.

Explanation

One megahertz equals one thousand kilohertz, so 145.500 MHz multiplied by 1000 gives 145,500 kHz. Shifting the decimal point three places in the wrong direction produces the other values.

Question 11Radio frequency fundamentals and spectrum concepts

Which emission designation element identifies the type of modulation of the main carrier?

  1. The second and third symbols
  2. The first symbol Correct answer.
  3. The fifth symbol
  4. The fourth symbol

Explanation

In the standard emission designation, the first symbol describes the type of modulation of the main carrier, such as amplitude or angle modulation. The following symbols describe the nature of the modulating signal and the type of information transmitted.

Question 12Radio frequency fundamentals and spectrum concepts

What does a bandwidth figure of 2K50 in an emission designation indicate?

  1. 2.5 MHz
  2. 2.5 kHz Correct answer.
  3. 25 kHz
  4. 250 kHz

Explanation

In an emission designation, the letter K marks the decimal point and stands for kilohertz, so 2K50 means 2.5 kHz. The letters H, M and G would indicate hectohertz, megahertz and gigahertz respectively.

Question 13Radio frequency fundamentals and spectrum concepts

Which condition must be met for a transmitter to operate as a spread spectrum system using frequency hopping?

  1. The emission is confined to a single 12.5 kHz channel.
  2. The carrier is switched among many frequencies according to a defined sequence. Correct answer.
  3. The modulation index is held constant at one.
  4. The carrier remains on a single frequency while the data rate is varied.

Explanation

Frequency hopping spreads energy by changing the carrier frequency rapidly in a pseudorandom sequence known to both ends of the link. Holding the carrier fixed or confining it to one narrow channel is the opposite of spreading, and modulation index is unrelated to hopping.

Question 14Radio frequency fundamentals and spectrum concepts

Which phenomenon allows radio signals at some frequencies to travel beyond the horizon by refraction in the ionosphere?

  1. Sky-wave propagation Correct answer.
  2. Tropospheric ducting
  3. Absorption by the D layer
  4. Ground-wave propagation

Explanation

Sky-wave propagation occurs when the ionosphere refracts a signal back toward the Earth, allowing reception well beyond the horizon. Ground waves follow the Earth's surface, ducting occurs in the lower atmosphere, and absorption reduces rather than enables long-distance paths.

Question 15Radio frequency fundamentals and spectrum concepts

A signal at the receiver is measured as 1 microwatt. What is this level in dBm?

  1. 0 dBm
  2. 30 dBm
  3. -30 dBm Correct answer.
  4. -60 dBm

Explanation

One microwatt equals 0.001 milliwatt, whose base-ten logarithm is minus three, so ten times that value gives minus 30 dBm. Zero dBm corresponds to one milliwatt, and the sign must be negative because the level is below one milliwatt.

Question 16Radio frequency fundamentals and spectrum concepts

An amplifier provides a gain of 20 dB. By what factor does it increase the input power?

  1. 20
  2. 2
  3. 100 Correct answer.
  4. 1000

Explanation

A power gain in decibels equals ten times the base-ten logarithm of the power ratio, so 20 dB corresponds to a ratio of 100. A factor of two is about 3 dB and a factor of 1000 is 30 dB.

Question 17Radio frequency fundamentals and spectrum concepts

Why is filtering applied to the output of a transmitter?

  1. To limit emissions outside the necessary bandwidth Correct answer.
  2. To convert the signal from analogue to digital form
  3. To raise the carrier frequency to the assigned channel
  4. To increase the modulation depth of the signal

Explanation

Output filtering suppresses harmonics and other unwanted products so that emissions stay within the necessary bandwidth and meet spurious limits. It does not shift the carrier, change modulation depth, or perform analogue-to-digital conversion.

Question 18Radio frequency fundamentals and spectrum concepts

Which statement best explains why spectrum regulators assign frequency bands to particular services?

  1. To prevent the use of digital modulation in all bands
  2. To standardise the physical dimensions of antennas
  3. To guarantee that every applicant receives an exclusive frequency
  4. To ensure each service can operate without harmful interference from incompatible uses Correct answer.

Explanation

Band allocation separates services with incompatible characteristics or power levels so that they do not cause harmful interference to one another. Allocation does not grant every applicant an exclusive frequency, and it does not regulate antenna dimensions or ban particular modulation types.

Question 19Radio frequency fundamentals and spectrum concepts

A station transmits with 25 watts into an antenna with 6 dBd gain. Ignoring losses, what is the approximate effective radiated power relative to a dipole?

  1. 50 W
  2. 150 W
  3. 31 W
  4. 100 W Correct answer.

Explanation

A 6 dB gain corresponds to a power ratio of about four, so 25 watts multiplied by four gives approximately 100 watts ERP. Adding 6 to the power figure instead of multiplying is a common error that produces 31 watts.

Question 20Radio frequency fundamentals and spectrum concepts

What does the term necessary bandwidth describe?

  1. The widest bandwidth a receiver can tolerate before overload
  2. The spacing between adjacent channel centre frequencies
  3. The minimum bandwidth required to transmit information at a specified rate and quality Correct answer.
  4. The bandwidth of the antenna's resonant response

Explanation

Necessary bandwidth is the minimum width, for a given class of emission, sufficient to transmit the information at the required rate and quality. It is not a receiver tolerance limit, an antenna property, or a channel spacing figure.

Question 21Radio frequency fundamentals and spectrum concepts

A receiver's sensitivity is specified as 0.5 microvolts for 12 dB SINAD. What does this specification indicate?

  1. The audio power delivered to the loudspeaker
  2. The weakest signal at which the receiver produces a defined usable output quality Correct answer.
  3. The image frequency rejection of the receiver
  4. The maximum input the receiver can accept without damage

Explanation

Sensitivity states the minimum input level that yields a specified output quality, here a 12 dB signal-to-noise-and-distortion ratio. It is not a damage threshold, an image rejection figure, or an audio output power rating.

Question 22Radio frequency fundamentals and spectrum concepts

Two transmitters are on adjacent channels and one causes interference in the other's receiver. Which measure most directly reduces this interference without changing either assigned frequency?

  1. Replacing both antennas with higher-gain types
  2. Reducing the receiver's audio gain
  3. Improving receiver selectivity and increasing physical separation Correct answer.
  4. Increasing both transmitters' output power

Explanation

Adjacent-channel interference is reduced by making the receiver more selective and by increasing the separation between the units, which lowers the interfering signal level at the victim receiver. Raising power or antenna gain increases the interference, and lowering audio gain does not remove it from the intermediate frequency stages.

Question 23Radio frequency fundamentals and spectrum concepts

A signal's level is quoted as 40 dBuV at a 50-ohm receiver input. What is the approximate power in dBm?

  1. -67 dBm Correct answer.
  2. -27 dBm
  3. -7 dBm
  4. -47 dBm

Explanation

Converting 40 dBuV to microvolts gives 100 microvolts, and across 50 ohms this is about 0.2 microwatt, or roughly minus 67 dBm. The conversion constant for a 50-ohm system is about 107 dB, so subtracting 40 from minus 107 yields the same result.

Question 24Radio frequency fundamentals and spectrum concepts

A frequency-hopping system hops over a 2 MHz band with 400 channels. What is the approximate channel spacing?

  1. 20 kHz
  2. 50 kHz
  3. 2 kHz
  4. 5 kHz Correct answer.

Explanation

Dividing the 2 MHz spread by 400 channels gives 5 kHz per channel, since 2,000,000 Hz divided by 400 equals 5000 Hz. The other values result from dividing by the wrong number of channels or misplacing the decimal.

Question 25Radio frequency fundamentals and spectrum concepts

A harmonic of a transmitter's fundamental emission falls within a band allocated to another service. Which statement best describes the regulatory concern?

  1. The harmonic may be used to extend coverage into the other service's band.
  2. The harmonic is acceptable because it is lower in power than the fundamental.
  3. The harmonic is permitted because it lies outside the assigned channel.
  4. The harmonic is an unwanted emission that must be kept within spurious emission limits. Correct answer.

Explanation

Harmonics are unwanted emissions, and transmitters must suppress them below the spurious emission limits so they do not cause harmful interference to other services. Being weaker than the fundamental or lying outside the assigned channel does not exempt an emission from those limits.

Question 26Radio frequency fundamentals and spectrum concepts

A radio signal has a wavelength of 2 metres. What is its approximate frequency?

  1. 600 MHz
  2. 15 MHz
  3. 150 MHz Correct answer.
  4. 300 MHz

Explanation

The relationship between frequency and wavelength is given by the formula: frequency (in MHz) = 300 / wavelength (in metres). For a 2-metre wavelength, 300 / 2 = 150 MHz. This is a fundamental calculation in radio frequency work.

Question 27Radio frequency fundamentals and spectrum concepts

Which statement best describes the difference between a signal's bandwidth and its information capacity?

  1. Bandwidth refers only to the audio frequency range, while information capacity refers to the radio frequency range.
  2. Bandwidth is the range of frequencies occupied by a signal, while information capacity is the maximum data rate that can be reliably transmitted over that bandwidth. Correct answer.
  3. Bandwidth is the maximum data rate that can be transmitted, while information capacity is the range of frequencies occupied by the signal.
  4. Bandwidth and information capacity are two terms for exactly the same property of a radio signal.

Explanation

Bandwidth describes the width of the frequency spectrum that a signal occupies, typically measured between the half-power points or according to a defined emission mask. Information capacity, often described by the Shannon-Hartley theorem, is the theoretical maximum rate at which data can be transmitted error-free over a channel of a given bandwidth and signal-to-noise ratio. They are related but distinct concepts.

Question 28Radio frequency fundamentals and spectrum concepts

In the context of radio frequency propagation, what does the term 'free-space path loss' refer to?

  1. The loss of signal strength due to absorption by atmospheric gases and water vapour.
  2. The reduction in signal power caused by reflection and scattering from buildings and terrain.
  3. The attenuation of a radio signal as it spreads out spherically in free space, increasing with distance and frequency. Correct answer.
  4. The loss incurred in the transmission line connecting the transmitter to the antenna.

Explanation

Free-space path loss models the geometric spreading of radio waves in an unobstructed environment. It is proportional to the square of the distance and the square of the frequency, so it increases with both. It does not include effects of atmosphere, obstacles, or feedline losses.

Question 29Radio frequency fundamentals and spectrum concepts

A transmitter emits a signal with a necessary bandwidth of 10 kHz. The emission designator includes the symbol '10K0'. What does the 'K' represent in this context?

  1. The letter K indicates the type of information transmitted (e.g., telegraphy).
  2. The letter K indicates the nature of the modulating signal (e.g., digital).
  3. The letter K indicates that the emission is frequency modulated.
  4. The letter K indicates that the bandwidth is expressed in kilohertz. Correct answer.

Explanation

In an emission designator, the first four characters give the necessary bandwidth using a letter for the decimal point and a unit letter: H for hertz, K for kilohertz, M for megahertz, and G for gigahertz. Thus '10K0' means 10.0 kHz. The other elements (modulation, nature of signal, type of information) are represented by separate letters later in the designator.

Question 30Radio frequency fundamentals and spectrum concepts

A receiver has a 50-ohm input. A signal at the input measures 0.5 microvolts (µV). What is the approximate signal power in dBm? (Use the formula P(dBm) = 10 log10(P(mW)/1 mW), and note that P = V^2 / R.)

  1. -107 dBm
  2. -101 dBm
  3. -119 dBm
  4. -113 dBm Correct answer.

Explanation

First convert 0.5 µV to volts: 0.5 × 10^-6 V. Then P = V^2 / R = (0.5×10^-6)^2 / 50 = 2.5×10^-13 / 50 = 5×10^-15 W = 5×10^-12 mW. Then P(dBm) = 10 log10(5×10^-12) = 10 × (-11.301) = -113.01 dBm, approximately -113 dBm.

Question 31Radiocommunication apparatus standards and certification requirements

Under Canada's radiocommunication regulatory framework, which document type is issued to certify that a radio apparatus model complies with the applicable RSS standards before it may be offered for sale in Canada?

  1. A technical acceptance certificate (TAC) or supplier's declaration of conformity (SDoC) Correct answer.
  2. A station construction permit issued for each unit sold
  3. A spectrum licence issued for the apparatus model
  4. A broadcast undertaking licence issued by the Commission

Explanation

Radio apparatus must comply with the applicable Radio Standards Specification and be certified or declared before sale. Certification is evidenced by a technical acceptance certificate issued by ISED, or by a supplier's declaration of conformity where that route is permitted. Spectrum licences and broadcast licences authorize use of frequencies or operation of undertakings, not the equipment model itself.

Question 32Radiocommunication apparatus standards and certification requirements

Which organization is responsible for administering Canada's certification programme for radiocommunication apparatus, including issuing technical acceptance certificates?

  1. The Standards Council of Canada (SCC)
  2. The Canadian Radio-television and Telecommunications Commission (CRTC)
  3. Innovation, Science and Economic Development Canada (ISED) Correct answer.
  4. The Radio Advisory Board of Canada (RABC)

Explanation

ISED administers the radiocommunication equipment certification programme and issues technical acceptance certificates. The CRTC regulates broadcasting and telecommunications carriers but does not certify radio apparatus. The SCC accredits standards bodies and laboratories, and the RABC is an industry advisory body.

Question 33Radiocommunication apparatus standards and certification requirements

A manufacturer wants to sell a low-power wireless device in Canada using a frequency band covered by a Radio Standards Specification that permits either certification or supplier's declaration of conformity. Which statement best describes the conformity route available?

  1. The manufacturer may choose the route permitted for that equipment category by the applicable RSS Correct answer.
  2. The manufacturer must always obtain a technical acceptance certificate regardless of category
  3. The manufacturer may rely on certification issued only in another country
  4. The manufacturer must always self-declare without any testing

Explanation

Each RSS specifies whether the equipment category requires certification by a certification body or may use supplier's declaration of conformity. The manufacturer cannot freely choose a route the standard does not permit. Foreign approvals alone do not satisfy Canadian requirements, and testing is required under either route.

Question 34Radiocommunication apparatus standards and certification requirements

What is the primary function of a Radio Standards Specification (RSS) published by ISED?

  1. To set tariffs for telecommunications service providers
  2. To assign individual call signs to licensed amateur operators
  3. To allocate frequency bands among federal government departments
  4. To set technical requirements that radiocommunication apparatus must meet to be certified or declared Correct answer.

Explanation

An RSS defines the technical standards, such as emission limits, frequency ranges and test methods, that apparatus must satisfy for certification or supplier's declaration. Call sign assignment, tariff regulation and federal band allocation are handled through other instruments and processes.

Question 35Radiocommunication apparatus standards and certification requirements

A device is certified and bears the required certification marking. What does that marking indicate to a purchaser in Canada?

  1. Every individual unit has been individually tested by ISED
  2. The device is approved for use on any frequency worldwide
  3. The device has been type-approved by the CRTC
  4. The apparatus model has been certified as compliant with the applicable Canadian technical requirements Correct answer.

Explanation

The certification marking shows that the equipment model has met the applicable Canadian requirements and been certified. Certification is at the model level, not per-unit testing by the regulator. It does not confer worldwide frequency authorization or CRTC type approval.

Question 36Radiocommunication apparatus standards and certification requirements

Which party typically issues a technical acceptance certificate after reviewing test results and documentation submitted for a radio apparatus model?

  1. A retail distributor of the apparatus
  2. The manufacturer's internal quality assurance department alone
  3. A certification body recognized by ISED under the certification programme Correct answer.
  4. The end user who purchases the apparatus

Explanation

Certification bodies recognized by ISED review test reports and documentation and issue technical acceptance certificates. Manufacturer self-review, distributors and end users do not have authority to issue certificates, although manufacturers are responsible for ensuring compliance.

Question 37Radiocommunication apparatus standards and certification requirements

A manufacturer modifies a certified device by changing its antenna and increasing output power beyond the certified level. What is the appropriate regulatory position?

  1. The original certificate remains valid because the model number is unchanged
  2. Only a label update is needed to reflect the new power level
  3. The modification requires new testing and recertification because the certified characteristics have changed Correct answer.
  4. No action is needed if the device is sold only online

Explanation

A certificate covers the specific configuration tested. Changing the antenna or increasing power alters the emission characteristics and requires retesting and recertification before the modified device may be sold. Keeping the same model number or updating a label does not preserve compliance.

Question 38Radiocommunication apparatus standards and certification requirements

What does the term 'host' mean in the context of Canadian certification of radio modules?

  1. The final product into which a certified radio module is installed Correct answer.
  2. The certification body that issued the module certificate
  3. The network operator that provides service to the device
  4. The testing laboratory that performed the module tests

Explanation

In module certification, the host is the end product into which the certified module is integrated. The module certificate may impose conditions on the host, such as antenna type or separation distances. Laboratories, certification bodies and network operators are distinct roles.

Question 39Radiocommunication apparatus standards and certification requirements

A certified module is intended for installation in multiple host products. Which condition must generally be satisfied for the module certification to remain valid across those hosts?

  1. The module must be installed within the conditions and restrictions specified in its certification Correct answer.
  2. Each host must be tested by ISED itself
  3. The module must be retested for every host regardless of conditions
  4. Each host must obtain a separate spectrum licence

Explanation

Module certifications typically specify conditions such as permitted antennas, maximum gain, separation distances and host labelling. Installation within those conditions allows use across hosts. Separate spectrum licences and regulator testing are not required, and full retesting is unnecessary when the conditions are met.

Question 40Radiocommunication apparatus standards and certification requirements

Which of the following best describes the role of an accredited testing laboratory in the Canadian certification process?

  1. It grants the spectrum licence needed to operate the apparatus
  2. It issues the technical acceptance certificate for the apparatus
  3. It performs the measurements against the applicable RSS and produces test reports used in certification Correct answer.
  4. It sets the emission limits that apparatus must meet

Explanation

Accredited laboratories perform testing to the applicable RSS and produce test reports that support certification or declaration. Certification bodies issue certificates, ISED sets requirements, and licensing is a separate process.

Question 41Radiocommunication apparatus standards and certification requirements

A supplier places a device on the Canadian market under supplier's declaration of conformity. What record-keeping obligation generally applies?

  1. The supplier must retain the supporting test reports and compliance documentation and provide them on request Correct answer.
  2. The supplier must publish the test reports on a public website
  3. The supplier must renew the declaration annually with a fee
  4. The supplier must send all test reports to ISED before each sale

Explanation

Under supplier's declaration, the supplier is responsible for testing and for retaining documentation demonstrating compliance, which must be made available to ISED on request. There is no general requirement to submit reports before sale, publish them, or renew annually with a fee.

Question 42Radiocommunication apparatus standards and certification requirements

Which of the following is the correct order of activities for bringing a new radio apparatus model to the Canadian market?

  1. Determine the applicable RSS, test the apparatus, obtain certification or declare conformity, then market it Correct answer.
  2. Market the apparatus, then test it, then determine the applicable RSS
  3. Test the apparatus, market it, then obtain certification
  4. Obtain a spectrum licence, then test, then declare conformity

Explanation

The process begins with identifying the applicable RSS, followed by testing, then certification or supplier's declaration, and only then offering the equipment for sale. Marketing before certification or declaration is not permitted. A spectrum licence is not the equipment approval step.

Question 43Radiocommunication apparatus standards and certification requirements

Which statement about the relationship between RSS requirements and licence-exempt operation is correct?

  1. Apparatus operating under licence-exempt conditions must still comply with the applicable RSS Correct answer.
  2. Licence-exempt apparatus is regulated only by the CRTC
  3. Licence-exempt apparatus is exempt from all technical standards
  4. Licence-exempt apparatus requires a spectrum licence but no testing

Explanation

Licence-exempt does not mean standard-exempt. Apparatus operating without an individual licence must still meet the technical requirements of the applicable RSS, including emission limits, to control interference. It does not require a spectrum licence, and the CRTC does not set these technical limits.

Question 44Radiocommunication apparatus standards and certification requirements

A device certified for a frequency band in Canada is later found to cause harmful interference because a component was substituted with an unapproved part. Who bears responsibility for correcting the non-compliance?

  1. ISED, which must redesign the apparatus
  2. The certification body that issued the original certificate
  3. The party responsible for the apparatus, such as the manufacturer or importer, must address the non-compliance Correct answer.
  4. The end user alone, since the device is already sold

Explanation

Responsibility for compliance rests with the parties placing apparatus on the market, such as manufacturers and importers. A substitution that changes performance may invalidate the certification basis and must be corrected. Certification bodies, end users and ISED do not redesign or bear that responsibility.

Question 45Radiocommunication apparatus standards and certification requirements

What is the purpose of labelling requirements in the Canadian certification framework for radio apparatus?

  1. To display the retail price of the apparatus
  2. To show the CRTC licence number of the seller
  3. To indicate the country in which the apparatus was manufactured
  4. To identify the certified apparatus and convey required compliance information to users and inspectors Correct answer.

Explanation

Labels identify the certified model and carry required statements, such as compliance notices and model identification, so users and inspectors can verify conformity. Labels are not for pricing, country-of-origin disclosure or CRTC seller licensing.

Question 46Radiocommunication apparatus standards and certification requirements

When a device is too small to bear the full required label, what approach is generally acceptable under Canadian requirements?

  1. Applying the label only to the shipping invoice
  2. Relying on the certification body to inform each purchaser
  3. Omitting the compliance information entirely
  4. Placing the required information in the user manual or on the packaging as permitted by the applicable requirements Correct answer.

Explanation

Where the device is too small to carry the label, the applicable requirements may allow the information to appear in the user manual or on the packaging. Complete omission is not acceptable, and invoices or third-party notification do not substitute for the required user-facing information.

Question 47Radiocommunication apparatus standards and certification requirements

Which of the following best describes a 'family' or 'series' approach in equipment certification?

  1. Certifying related models together where they share the same radio characteristics and differ only in non-radio features Correct answer.
  2. Certifying each unit produced on a separate certificate
  3. Certifying a model only after it has been sold for a year
  4. Certifying a model based solely on the manufacturer's marketing brochure

Explanation

A family or series approach allows related models with identical radio characteristics to be covered together, with differences limited to non-radio features. It does not involve per-unit certificates, post-sale certification or reliance on marketing material instead of test evidence.

Question 48Radiocommunication apparatus standards and certification requirements

What must a manufacturer generally do before affixing a certification mark to a radio apparatus model?

  1. Complete the required testing and obtain certification or a valid supplier's declaration Correct answer.
  2. Obtain a broadcast licence from the CRTC
  3. Publish the schematic diagrams publicly
  4. Register the product with a retailer

Explanation

The mark may be applied only after the model has been shown compliant through testing and certification or a valid supplier's declaration. Retailer registration, public schematics and broadcast licences are not prerequisites for marking radio apparatus.

Question 49Radiocommunication apparatus standards and certification requirements

An importer brings in radio apparatus that lacks any evidence of Canadian certification or declaration. What is the correct regulatory characterization?

  1. The apparatus is compliant if the importer adds its own label
  2. The apparatus is compliant because it was legally sold in another country
  3. The apparatus is non-compliant and may not be offered for sale in Canada until conformity is established Correct answer.
  4. The apparatus is compliant if the importer keeps it in the original packaging

Explanation

Apparatus offered for sale in Canada must meet Canadian requirements; foreign sale or packaging does not establish compliance. Adding a label without testing and certification does not create conformity. The importer must ensure the model is certified or declared before sale.

Question 50Radiocommunication apparatus standards and certification requirements

Which instrument would a candidate consult to find the technical emission limits and test methods for a specific category of short-range radio apparatus in Canada?

  1. The Radio Standards Specification applicable to that equipment category Correct answer.
  2. The Telecommunications Act
  3. The Broadcasting Act
  4. The Radiocommunication Act alone

Explanation

Technical limits and test methods are contained in the applicable RSS for the equipment category. The Acts provide the legal framework and authority but do not themselves state emission limits or measurement procedures.