NCIDQ: IDFX + IDPX EXAM 2025
QUESTIONS AND ANSWERS
D - ANS Air is MOST effectively distributed along an exterior window wall by a A) round
diffuser; B) square grille; C) series of square diffusers; D) slot air diffuser
B - ANS What would NOT be allowed in an access floor with removable panels? A) computer
cable; B) plumbing; C) HVAC; D) electrical conduit
D - ANS What type of locking device is most appropriate of an office building? A) cylindrical
lock; B) unit lock; C) card reader lock; D) mortise lock
D - ANS Which of the following metals would undergo the LEAST amount of change in
appearance over a period of time? A) brass; B) bronze; C) copper; D) stainless steel
D - ANS The purpose of a setting block is to A) seal the gap between edges of butt glazing; B)
cushion the glass against the frame; C) hold the glass in place; D) support the glass' weight and
separate its age from the bottom frame
B - ANS To detail a doorframe for a conference room where privacy is critical, which of the
following is LEAST likely to be required? A) an automatic door bottom; B) a heavy-duty, silent
door closer; C) neoprene gasketing; D) a solid-core door
C - ANS What is the minimum door rating for use with a 2-hour rated stairway enclosure? A)
3/4 hour; B) 1 hour; C) 1-1/2 hours; D) 2 hours
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, B - ANS In partition construction, the purpose of resilient channels is to A) increase the
thickness of a partition; B) increase the acoustical properties of a partition; C) increase the
strength of a partition; D) provide a suitable base for attaching wallboard over masonry
B - ANS In a plenum, how can a fire be prevented from spreading horizontally? A) install
sprinkler systems; B) use fire-rated dividers; C) use fiberglass material; D) install fire dampers
A - ANS According to IBC, the LEAST number of continuous treads to constitute a flight in a
nonresidential building is A) 1 continuous tread; B) 2 continuous treads; C) 3 continuous treads;
D) 12 continuous treads
A - ANS What term is used to denote the member supporting the treads in a wood stairway?
A) carriage; B) header; C) saddle; D) stringer
D - ANS What is NOT required on a 1-hour rated door? A) door closer; B) metal frame; C)
ball-bearing hinges; D) panic hardware
C - ANS In what order of importance should tables for a college library be selected? A)
flammability, design, comfort; B) finish, flammability, design; C) durability, cost, design; D)
quality, comfort, finish
C - ANS What type of seaming is the MOST appropriate for upholstered furniture in a
smoking lounge? A) channeling; B) buttoning; C) railroading; D) welt cording
D - ANS Which furniture test requires that an actual piece of furniture or an accurate full-size
mock-up, be tested for flammability in a large furnace? A) CAL TB 116; B) CAL TB 117; C) CAL TB
129; D) CAL TB 133
B - ANS What MOST affects the flammability of upholstery? A) type of chemical retardant
used; B) cushioning and surface fabric; C) surface fabric and interliner; D) surface fabric
2 Copyright ©2025 SIRJOEL ALL RIGHTS RESERVED
QUESTIONS AND ANSWERS
D - ANS Air is MOST effectively distributed along an exterior window wall by a A) round
diffuser; B) square grille; C) series of square diffusers; D) slot air diffuser
B - ANS What would NOT be allowed in an access floor with removable panels? A) computer
cable; B) plumbing; C) HVAC; D) electrical conduit
D - ANS What type of locking device is most appropriate of an office building? A) cylindrical
lock; B) unit lock; C) card reader lock; D) mortise lock
D - ANS Which of the following metals would undergo the LEAST amount of change in
appearance over a period of time? A) brass; B) bronze; C) copper; D) stainless steel
D - ANS The purpose of a setting block is to A) seal the gap between edges of butt glazing; B)
cushion the glass against the frame; C) hold the glass in place; D) support the glass' weight and
separate its age from the bottom frame
B - ANS To detail a doorframe for a conference room where privacy is critical, which of the
following is LEAST likely to be required? A) an automatic door bottom; B) a heavy-duty, silent
door closer; C) neoprene gasketing; D) a solid-core door
C - ANS What is the minimum door rating for use with a 2-hour rated stairway enclosure? A)
3/4 hour; B) 1 hour; C) 1-1/2 hours; D) 2 hours
1 Copyright ©2025 SIRJOEL ALL RIGHTS RESERVED
, B - ANS In partition construction, the purpose of resilient channels is to A) increase the
thickness of a partition; B) increase the acoustical properties of a partition; C) increase the
strength of a partition; D) provide a suitable base for attaching wallboard over masonry
B - ANS In a plenum, how can a fire be prevented from spreading horizontally? A) install
sprinkler systems; B) use fire-rated dividers; C) use fiberglass material; D) install fire dampers
A - ANS According to IBC, the LEAST number of continuous treads to constitute a flight in a
nonresidential building is A) 1 continuous tread; B) 2 continuous treads; C) 3 continuous treads;
D) 12 continuous treads
A - ANS What term is used to denote the member supporting the treads in a wood stairway?
A) carriage; B) header; C) saddle; D) stringer
D - ANS What is NOT required on a 1-hour rated door? A) door closer; B) metal frame; C)
ball-bearing hinges; D) panic hardware
C - ANS In what order of importance should tables for a college library be selected? A)
flammability, design, comfort; B) finish, flammability, design; C) durability, cost, design; D)
quality, comfort, finish
C - ANS What type of seaming is the MOST appropriate for upholstered furniture in a
smoking lounge? A) channeling; B) buttoning; C) railroading; D) welt cording
D - ANS Which furniture test requires that an actual piece of furniture or an accurate full-size
mock-up, be tested for flammability in a large furnace? A) CAL TB 116; B) CAL TB 117; C) CAL TB
129; D) CAL TB 133
B - ANS What MOST affects the flammability of upholstery? A) type of chemical retardant
used; B) cushioning and surface fabric; C) surface fabric and interliner; D) surface fabric
2 Copyright ©2025 SIRJOEL ALL RIGHTS RESERVED
