Page 1 of 18
NBC-HIS (NATIONAL BOARD FOR
CERTIFICATION IN HEARING INSTRUMENT
SCIENCES) 2026 EXAM COMPLETE (58)
CURRENT TESTING QUESTIONS AND
DETAILED CORRECT
ANSWERS|GUARANTEED PASS.
NBC-HIS
Ace your NBC-HIS (National Board for Certification in Hearing
Instrument Sciences) Exam by mastering all five competency
domains: patient assessment, hearing testing and analysis,
hearing instrument prescription and analysis, fitting and
servicing, and counseling and professional practice. This
comprehensive study guide evaluates your practical knowledge
and decision-making skills through realistic, scenario-based
questions aligned with the National Competency Exam (NCE)
blueprint. It is specifically designed to help you earn the
prestigious Board Certified in Hearing Instrument Sciences (BC-
HIS) credential and advance your career in hearing healthcare.
The MOST common cause of sudden loss of hearing at
4000Hz is:
A. Presbycusis
B. Noise Induced
, Page 2 of 18
C. Acoustic Trauma
D. Acoustic Neuroma ✓ ✓ ...... ANSWER ....... C.
Acoustic Trauma
During the course of taking a care history, which if the
following is LEAST important?
A. Any unilateral tinnitus experienced
B. Any vertigo symptoms
C. Concussion in the previous six months
D. Sudden hearing loss ✓ ✓ ...... ANSWER ....... C.
Concussion in the previous six months
Younger mother comes I'm concerned that her hearing has
gone down. And taking her history, it's found that her mother
also developed a hearing loss after the birth of her first child.
What would be the MOST probable ideology of this problem?
A. Cholesteatoma
B. Otitis media
C. Ménière's disease
D. Otosclerosis ✓ ✓ ...... ANSWER ....... D. Otosclerosis
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Which of the following conditions would NOT be a concern
in establishing a pure tone, air conduction threshold?
A. Collapsed eternal auditory meatus
B. Congenital atresia
C. Otosclerosis
D. Impacted cerumen ✓ ✓ ...... ANSWER ....... C.
Otosclerosis
Which of the following statements is FALSE when talking
about audiometric testing?
A. Headphones and insert earphones should produce
comparable results.
B. Bone conductor placement can affect the test results.
C. Insert earphones can give more accurate results when
testing a collapsed ear canal.
D. Ambient noise is more of a problem with insert ear
phones. ✓ ✓ ...... ANSWER ....... D. Ambient noise is
more of a problem with insert ear phones.
A large dip at 6000 Hz in one ear only, with a positive tone
decay, is indicative of:
NBC-HIS (NATIONAL BOARD FOR
CERTIFICATION IN HEARING INSTRUMENT
SCIENCES) 2026 EXAM COMPLETE (58)
CURRENT TESTING QUESTIONS AND
DETAILED CORRECT
ANSWERS|GUARANTEED PASS.
NBC-HIS
Ace your NBC-HIS (National Board for Certification in Hearing
Instrument Sciences) Exam by mastering all five competency
domains: patient assessment, hearing testing and analysis,
hearing instrument prescription and analysis, fitting and
servicing, and counseling and professional practice. This
comprehensive study guide evaluates your practical knowledge
and decision-making skills through realistic, scenario-based
questions aligned with the National Competency Exam (NCE)
blueprint. It is specifically designed to help you earn the
prestigious Board Certified in Hearing Instrument Sciences (BC-
HIS) credential and advance your career in hearing healthcare.
The MOST common cause of sudden loss of hearing at
4000Hz is:
A. Presbycusis
B. Noise Induced
, Page 2 of 18
C. Acoustic Trauma
D. Acoustic Neuroma ✓ ✓ ...... ANSWER ....... C.
Acoustic Trauma
During the course of taking a care history, which if the
following is LEAST important?
A. Any unilateral tinnitus experienced
B. Any vertigo symptoms
C. Concussion in the previous six months
D. Sudden hearing loss ✓ ✓ ...... ANSWER ....... C.
Concussion in the previous six months
Younger mother comes I'm concerned that her hearing has
gone down. And taking her history, it's found that her mother
also developed a hearing loss after the birth of her first child.
What would be the MOST probable ideology of this problem?
A. Cholesteatoma
B. Otitis media
C. Ménière's disease
D. Otosclerosis ✓ ✓ ...... ANSWER ....... D. Otosclerosis
, Page 3 of 18
Which of the following conditions would NOT be a concern
in establishing a pure tone, air conduction threshold?
A. Collapsed eternal auditory meatus
B. Congenital atresia
C. Otosclerosis
D. Impacted cerumen ✓ ✓ ...... ANSWER ....... C.
Otosclerosis
Which of the following statements is FALSE when talking
about audiometric testing?
A. Headphones and insert earphones should produce
comparable results.
B. Bone conductor placement can affect the test results.
C. Insert earphones can give more accurate results when
testing a collapsed ear canal.
D. Ambient noise is more of a problem with insert ear
phones. ✓ ✓ ...... ANSWER ....... D. Ambient noise is
more of a problem with insert ear phones.
A large dip at 6000 Hz in one ear only, with a positive tone
decay, is indicative of:
