CAOHC TEST |ACTUAL EXAM QUESTIONS AND WELL DETAILED VERI-
FIED SOLUTIONS| GRADED A+| BRAND NEW 2026/2027 UPDATE
What is the purpose of the OHC? - ANSWER Providing resources and guidance to facili-
tate the practice of hearing loss prevention through standardized training and credentialing
What are examples of auditory effects on hearing and damage risks? - ANSWER Tinnitus
and hearing loss
What are non auditory effects on hearing and damage risks? - ANSWER Stress, high blood
pressure
What is the difference between the requiremtns of OSHA and the recommendations of
NIOSH? - ANSWER NIOSH refers to research and recoomendations. OSHA regulates and
implements.
What are potential sources of hazardous noise in occupational work settings? - ANSWER
Machinery, constructino, railoroads and equipment, mining, manufacturing, farming, profes-
sional musician
What are potential sources of hazardous noise in non occupational work settings? - AN-
SWER Motorcycles, sporting guns, carpentry equipment, lawn equipment, personal lis-
tening devices
What are some of the lasting effects of noise induced hearing loss? - ANSWER Social
withdrawal, frustration, anger, and effects on private life
What are the "do's" of an OHC (hearing tech)? - ANSWER Education, fitting hearing pro-
tection, hearing test, and counciling
1
, What are the don'ts of an OHC (hearing tech)? - ANSWER Diagnose, supervise
Who can be Professional Supervisors? - ANSWER Audiologists and physicians
How many workers are exposed to hazardous noise on the job? - ANSWER 22 million plus
What occupational population is most at risk for noise induced hearing loss which highest
amount of claims? - ANSWER Manufacturing accounts for approximately 14% of U.S
workforce but accounts for approximately 80% of incidence of NIHL.
Collects sound waves, localizes sounds waves, protects middle ear components and provides
resonate amplication is the function of what part of the ear? - ANSWER Outer ear
Acoustic transformer, impedance matching system, provides pressue equalization, and pro-
tects the inner ear is the function of what part of the ear? - ANSWER Middle ear
Provides intensity, frequency and temporal coding that is relayed via the auditory nerve for
further processing is the function of what part of the ear? - ANSWER Inner ear
An early stage indication of noise induced hearing loss is identified typically at which fre-
quencies on an audiogram? - ANSWER 3-6 kHz
What is a general rule of conductive hearing loss? - ANSWER Flat and often worse at low
frequencies
What would be an indication of an advanced stage noise induced hearing loss? - ANSWER
A notch configuration progressing to a high-frequency slope
Mixed hearing loss is a combination of what? - ANSWER Conductive and sensorineural
components
2
FIED SOLUTIONS| GRADED A+| BRAND NEW 2026/2027 UPDATE
What is the purpose of the OHC? - ANSWER Providing resources and guidance to facili-
tate the practice of hearing loss prevention through standardized training and credentialing
What are examples of auditory effects on hearing and damage risks? - ANSWER Tinnitus
and hearing loss
What are non auditory effects on hearing and damage risks? - ANSWER Stress, high blood
pressure
What is the difference between the requiremtns of OSHA and the recommendations of
NIOSH? - ANSWER NIOSH refers to research and recoomendations. OSHA regulates and
implements.
What are potential sources of hazardous noise in occupational work settings? - ANSWER
Machinery, constructino, railoroads and equipment, mining, manufacturing, farming, profes-
sional musician
What are potential sources of hazardous noise in non occupational work settings? - AN-
SWER Motorcycles, sporting guns, carpentry equipment, lawn equipment, personal lis-
tening devices
What are some of the lasting effects of noise induced hearing loss? - ANSWER Social
withdrawal, frustration, anger, and effects on private life
What are the "do's" of an OHC (hearing tech)? - ANSWER Education, fitting hearing pro-
tection, hearing test, and counciling
1
, What are the don'ts of an OHC (hearing tech)? - ANSWER Diagnose, supervise
Who can be Professional Supervisors? - ANSWER Audiologists and physicians
How many workers are exposed to hazardous noise on the job? - ANSWER 22 million plus
What occupational population is most at risk for noise induced hearing loss which highest
amount of claims? - ANSWER Manufacturing accounts for approximately 14% of U.S
workforce but accounts for approximately 80% of incidence of NIHL.
Collects sound waves, localizes sounds waves, protects middle ear components and provides
resonate amplication is the function of what part of the ear? - ANSWER Outer ear
Acoustic transformer, impedance matching system, provides pressue equalization, and pro-
tects the inner ear is the function of what part of the ear? - ANSWER Middle ear
Provides intensity, frequency and temporal coding that is relayed via the auditory nerve for
further processing is the function of what part of the ear? - ANSWER Inner ear
An early stage indication of noise induced hearing loss is identified typically at which fre-
quencies on an audiogram? - ANSWER 3-6 kHz
What is a general rule of conductive hearing loss? - ANSWER Flat and often worse at low
frequencies
What would be an indication of an advanced stage noise induced hearing loss? - ANSWER
A notch configuration progressing to a high-frequency slope
Mixed hearing loss is a combination of what? - ANSWER Conductive and sensorineural
components
2
