Nevada C-10 Landscape Contractor
Examination Exam Practice Questions and
Correct Answers (Verified Answers) Plus
Rationales
Question 1
Which treatment would be the least effective for preserving wood?
Correct Answer
Paint
Question 2
The best time to water a lawn is during the
Correct Answer
Early morning
Question 3
A length of spaced vertical board fencing measuring 40 feet requires ______ 4" x 4"
posts when spaced 8 feet on center.
Correct Answer
6
Page 1 of 88
,Question 4
Lawn grasses will not grow in an area that is consistently waterlogged. Good drainage
on a grassy surface requires a slope of at least
Correct Answer
2%
Question 1: According to Nevada contractor licensing requirements, which of
the following best describes the scope of work authorized under a C-10
Landscape Contracting license?
A. Installation of structural concrete foundations for commercial buildings
B. Landscape design, installation of plant materials, irrigation systems, and related
exterior improvements
C. Electrical wiring of commercial landscape lighting systems exceeding low-voltage
thresholds without additional licensing
D. Construction of multi-story residential structures
CORRECT ANSWER: B. Landscape design, installation of plant materials,
irrigation systems, and related exterior improvements
Rationale: The Nevada C-10 classification authorizes work involving the design and
installation of landscapes, including plants, irrigation, grading for landscape
purposes, and associated exterior features. Structural and high-voltage electrical
work generally require additional or different classifications.
Question 2: Under Nevada law, a landscape contractor who fails to obtain the
required contractor’s license before performing work valued above the
statutory threshold may be subject to which of the following penalties?
A. Only a written warning on the first offense
B. Civil penalties, possible criminal charges, and inability to enforce the contract in
court
C. Automatic suspension of any existing business license only
D. No penalties if the homeowner agrees to the work
CORRECT ANSWER: B. Civil penalties, possible criminal charges, and inability
to enforce the contract in court
Rationale: Performing contracting work without a required license in Nevada
exposes the contractor to administrative fines, possible misdemeanor or felony
charges depending on the circumstances, and the legal inability to collect payment
or enforce the contract.
Question 3: When installing a new automatic irrigation system in Nevada,
which of the following is the most important consideration for water
Page 2 of 88
,conservation compliance?
A. Using the highest possible precipitation rate sprinklers
B. Matching precipitation rates, installing pressure regulation, and incorporating
smart controllers or rain sensors as required by local codes
C. Installing only manual valves
D. Using potable water exclusively without regard to efficiency
CORRECT ANSWER: B. Matching precipitation rates, installing pressure
regulation, and incorporating smart controllers or rain sensors as required by
local codes
Rationale: Nevada’s arid climate and local water-efficiency ordinances emphasize
proper hydraulic design, matched precipitation rates, pressure regulation, and the
use of weather-based or soil-moisture-based controllers to minimize water waste.
Question 4: Which of the following soil characteristics is most critical for a
landscape contractor to evaluate before installing plant material in the Las
Vegas valley?
A. High organic content and low pH
B. Alkalinity, high pH, low organic matter, and potential for caliche layers
C. Consistently high moisture retention
D. Strongly acidic conditions
CORRECT ANSWER: B. Alkalinity, high pH, low organic matter, and potential
for caliche layers
Rationale: Desert soils in southern Nevada are typically alkaline, low in organic
matter, and may contain cemented caliche layers that restrict drainage and root
growth. Proper soil preparation and plant selection must account for these
conditions.
Question 5: Under Nevada contractor regulations, how long must a licensed
landscape contractor retain project records and contracts?
A. Six months after project completion
B. One year after project completion
C. A minimum of three years or as otherwise required by the Nevada State
Contractors Board
D. Records may be discarded immediately after final payment
CORRECT ANSWER: C. A minimum of three years or as otherwise required by
the Nevada State Contractors Board
Rationale: The Nevada State Contractors Board requires contractors to maintain
records of projects, including contracts, change orders, and financial documents, for
Page 3 of 88
, a minimum period (commonly three years) to facilitate investigations and audits.
Question 6: Which of the following is the primary purpose of a backflow
prevention device on a landscape irrigation system connected to a potable
water supply?
A. To increase water pressure to the sprinkler heads
B. To prevent contamination of the potable water supply by irrigation water
C. To filter sediment from the water
D. To measure water usage for billing
CORRECT ANSWER: B. To prevent contamination of the potable water supply
by irrigation water
Rationale: Backflow prevention assemblies are required by plumbing and health
codes to stop non-potable irrigation water from flowing backward into the drinking
water system, protecting public health.
Question 7: When constructing a segmental retaining wall for a landscape
project in Nevada, which factor is most important for long-term stability?
A. Using the tallest possible blocks without engineering
B. Proper base preparation, drainage behind the wall, and adherence to
manufacturer and engineering specifications for height and surcharge
C. Installing the wall directly on undisturbed native soil without a gravel base
D. Eliminating all drainage to keep the soil moist
CORRECT ANSWER: B. Proper base preparation, drainage behind the wall, and
adherence to manufacturer and engineering specifications for height and
surcharge
Rationale: Segmental retaining walls rely on proper foundation preparation,
compaction, geogrid reinforcement when required, and effective drainage to
prevent hydrostatic pressure failure. Local codes and manufacturer guidelines must
be followed.
Question 8: According to Nevada law, which of the following must a landscape
contractor include in a written contract for residential work exceeding the
statutory amount?
A. Only the total price
B. A description of the work, materials to be used, payment schedule, start and
completion dates, and required notices
C. The contractor’s personal Social Security number
D. A guarantee that the project will increase property value by a specific percentage
Page 4 of 88
Examination Exam Practice Questions and
Correct Answers (Verified Answers) Plus
Rationales
Question 1
Which treatment would be the least effective for preserving wood?
Correct Answer
Paint
Question 2
The best time to water a lawn is during the
Correct Answer
Early morning
Question 3
A length of spaced vertical board fencing measuring 40 feet requires ______ 4" x 4"
posts when spaced 8 feet on center.
Correct Answer
6
Page 1 of 88
,Question 4
Lawn grasses will not grow in an area that is consistently waterlogged. Good drainage
on a grassy surface requires a slope of at least
Correct Answer
2%
Question 1: According to Nevada contractor licensing requirements, which of
the following best describes the scope of work authorized under a C-10
Landscape Contracting license?
A. Installation of structural concrete foundations for commercial buildings
B. Landscape design, installation of plant materials, irrigation systems, and related
exterior improvements
C. Electrical wiring of commercial landscape lighting systems exceeding low-voltage
thresholds without additional licensing
D. Construction of multi-story residential structures
CORRECT ANSWER: B. Landscape design, installation of plant materials,
irrigation systems, and related exterior improvements
Rationale: The Nevada C-10 classification authorizes work involving the design and
installation of landscapes, including plants, irrigation, grading for landscape
purposes, and associated exterior features. Structural and high-voltage electrical
work generally require additional or different classifications.
Question 2: Under Nevada law, a landscape contractor who fails to obtain the
required contractor’s license before performing work valued above the
statutory threshold may be subject to which of the following penalties?
A. Only a written warning on the first offense
B. Civil penalties, possible criminal charges, and inability to enforce the contract in
court
C. Automatic suspension of any existing business license only
D. No penalties if the homeowner agrees to the work
CORRECT ANSWER: B. Civil penalties, possible criminal charges, and inability
to enforce the contract in court
Rationale: Performing contracting work without a required license in Nevada
exposes the contractor to administrative fines, possible misdemeanor or felony
charges depending on the circumstances, and the legal inability to collect payment
or enforce the contract.
Question 3: When installing a new automatic irrigation system in Nevada,
which of the following is the most important consideration for water
Page 2 of 88
,conservation compliance?
A. Using the highest possible precipitation rate sprinklers
B. Matching precipitation rates, installing pressure regulation, and incorporating
smart controllers or rain sensors as required by local codes
C. Installing only manual valves
D. Using potable water exclusively without regard to efficiency
CORRECT ANSWER: B. Matching precipitation rates, installing pressure
regulation, and incorporating smart controllers or rain sensors as required by
local codes
Rationale: Nevada’s arid climate and local water-efficiency ordinances emphasize
proper hydraulic design, matched precipitation rates, pressure regulation, and the
use of weather-based or soil-moisture-based controllers to minimize water waste.
Question 4: Which of the following soil characteristics is most critical for a
landscape contractor to evaluate before installing plant material in the Las
Vegas valley?
A. High organic content and low pH
B. Alkalinity, high pH, low organic matter, and potential for caliche layers
C. Consistently high moisture retention
D. Strongly acidic conditions
CORRECT ANSWER: B. Alkalinity, high pH, low organic matter, and potential
for caliche layers
Rationale: Desert soils in southern Nevada are typically alkaline, low in organic
matter, and may contain cemented caliche layers that restrict drainage and root
growth. Proper soil preparation and plant selection must account for these
conditions.
Question 5: Under Nevada contractor regulations, how long must a licensed
landscape contractor retain project records and contracts?
A. Six months after project completion
B. One year after project completion
C. A minimum of three years or as otherwise required by the Nevada State
Contractors Board
D. Records may be discarded immediately after final payment
CORRECT ANSWER: C. A minimum of three years or as otherwise required by
the Nevada State Contractors Board
Rationale: The Nevada State Contractors Board requires contractors to maintain
records of projects, including contracts, change orders, and financial documents, for
Page 3 of 88
, a minimum period (commonly three years) to facilitate investigations and audits.
Question 6: Which of the following is the primary purpose of a backflow
prevention device on a landscape irrigation system connected to a potable
water supply?
A. To increase water pressure to the sprinkler heads
B. To prevent contamination of the potable water supply by irrigation water
C. To filter sediment from the water
D. To measure water usage for billing
CORRECT ANSWER: B. To prevent contamination of the potable water supply
by irrigation water
Rationale: Backflow prevention assemblies are required by plumbing and health
codes to stop non-potable irrigation water from flowing backward into the drinking
water system, protecting public health.
Question 7: When constructing a segmental retaining wall for a landscape
project in Nevada, which factor is most important for long-term stability?
A. Using the tallest possible blocks without engineering
B. Proper base preparation, drainage behind the wall, and adherence to
manufacturer and engineering specifications for height and surcharge
C. Installing the wall directly on undisturbed native soil without a gravel base
D. Eliminating all drainage to keep the soil moist
CORRECT ANSWER: B. Proper base preparation, drainage behind the wall, and
adherence to manufacturer and engineering specifications for height and
surcharge
Rationale: Segmental retaining walls rely on proper foundation preparation,
compaction, geogrid reinforcement when required, and effective drainage to
prevent hydrostatic pressure failure. Local codes and manufacturer guidelines must
be followed.
Question 8: According to Nevada law, which of the following must a landscape
contractor include in a written contract for residential work exceeding the
statutory amount?
A. Only the total price
B. A description of the work, materials to be used, payment schedule, start and
completion dates, and required notices
C. The contractor’s personal Social Security number
D. A guarantee that the project will increase property value by a specific percentage
Page 4 of 88
