IDFX PRACTICE TEST I EXAM 2025
QUESTIONS AND ANSWERS
(A) base plan - ANS Which type of plan is always needed to begin space planning in an
existing building?
(A) base plan
(B) circulation plan
(C) existing plan
(D) reflected ceiling plan
(C) double-loaded corridor system - ANS For most planning problems, the MOST efficient
type of circulation system is a
(A) radial system
(B) single-loaded corridor system
(C) double-loaded corridor system
(D) grid system
(A) net assignable area
(C) efficiency factor
(F) rentable-usable ratio - ANS To determine the necessary rentable floor area for a project,
the interior designer must know which of the following? (Choose the three that apply.)
(A) net assignable area
(B) number of employees
(C) efficiency factor
(D) expected growth rate
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,(E) corridor size and configuration
(F) rentable-usable ratio
(B) net area - ANS The initial determination of the area required for a client's program gives
the
(A) gross area
(B) net area
(C) rentable area
(D) usable area
(B) function, economy, and time - ANS According to William Pena's book, Problem Seeking,
all design problems can be stated in terms of form and which three other factors?
(A) analysis, synthesis, and function
(B) function, economy, and time
(C) goals, facts, and function
(D) economy, time, and synthesis
(D) convertibility, expandability, and versatility - ANS Interior spaces often need to be multi-
functional or flexible. What are the three components of flexibility as a programmatic design
concept?
(A) versatility, convertibility, grouping
(B) expandability, hierarchy, and flow
(C) flow, hierarchy, and convertibility
(D) convertibility, expandability, and versatility
(A) types of activity the room will be used for
(B) maximum number of residents using the room at one time
(E) a copy of the reflected ceiling plan
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, (F) height of the ceiling - ANS Which of the following data regarding a new multipurpose
room in an assisted-living facility would be important for the interior designer to give to the
mechanical engineer? (Choose the four that apply)
(A) types of activity the room will be used for
(B) maximum number of residents using the room at one time
(C) ages of the residents in the facility
(D) proportion of males to females
(E) a copy of the reflected ceiling plan
(F) height of the ceiling
(B) Ask the client if he has a budget, and suggest conducting a preliminary cost estimate to see
if he can afford what he wants - ANS An interior designer has been hired to redesign a large
Victorian house into a bed and breakfast inn. During an initial interview, the client says that he
wants to restore the interior to an authentic Victorian look, as well as enlarge some of the
bedrooms into suites so that the inn will be the best in town. After hearing these comments,
what should be the designer's FIRST course of action?
(A) Suggest that the client also retain an architect to determine the feasibility of enlarging
rooms and removing walls
(B) Ask the client if he has a budget, and suggest conducting a preliminary cost estimate to see
if he can afford what he wants
(C) Tell the client that he needs to define what he means by "the best in town", to give the
designer a more definite idea of how to proceed
(D) Recommend to the client that field measurements of the house be conducted, and begin
research on authentic Victorian furnishings and finishes
(C) heating system capacity and septic capacity - ANS A residential design in a rural area
involves the addition of two bedrooms and two bathrooms. Which of the following should be
the GREATEST concerns during the home's due diligence investigation?
(A) neighborhood character and zoning setbacks
(B) zoning setbacks and septic capacity
(C) heating system capacity and septic capacity
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QUESTIONS AND ANSWERS
(A) base plan - ANS Which type of plan is always needed to begin space planning in an
existing building?
(A) base plan
(B) circulation plan
(C) existing plan
(D) reflected ceiling plan
(C) double-loaded corridor system - ANS For most planning problems, the MOST efficient
type of circulation system is a
(A) radial system
(B) single-loaded corridor system
(C) double-loaded corridor system
(D) grid system
(A) net assignable area
(C) efficiency factor
(F) rentable-usable ratio - ANS To determine the necessary rentable floor area for a project,
the interior designer must know which of the following? (Choose the three that apply.)
(A) net assignable area
(B) number of employees
(C) efficiency factor
(D) expected growth rate
1 Copyright ©2025 SIRJOEL ALL RIGHTS RESERVED
,(E) corridor size and configuration
(F) rentable-usable ratio
(B) net area - ANS The initial determination of the area required for a client's program gives
the
(A) gross area
(B) net area
(C) rentable area
(D) usable area
(B) function, economy, and time - ANS According to William Pena's book, Problem Seeking,
all design problems can be stated in terms of form and which three other factors?
(A) analysis, synthesis, and function
(B) function, economy, and time
(C) goals, facts, and function
(D) economy, time, and synthesis
(D) convertibility, expandability, and versatility - ANS Interior spaces often need to be multi-
functional or flexible. What are the three components of flexibility as a programmatic design
concept?
(A) versatility, convertibility, grouping
(B) expandability, hierarchy, and flow
(C) flow, hierarchy, and convertibility
(D) convertibility, expandability, and versatility
(A) types of activity the room will be used for
(B) maximum number of residents using the room at one time
(E) a copy of the reflected ceiling plan
2 Copyright ©2025 SIRJOEL ALL RIGHTS RESERVED
, (F) height of the ceiling - ANS Which of the following data regarding a new multipurpose
room in an assisted-living facility would be important for the interior designer to give to the
mechanical engineer? (Choose the four that apply)
(A) types of activity the room will be used for
(B) maximum number of residents using the room at one time
(C) ages of the residents in the facility
(D) proportion of males to females
(E) a copy of the reflected ceiling plan
(F) height of the ceiling
(B) Ask the client if he has a budget, and suggest conducting a preliminary cost estimate to see
if he can afford what he wants - ANS An interior designer has been hired to redesign a large
Victorian house into a bed and breakfast inn. During an initial interview, the client says that he
wants to restore the interior to an authentic Victorian look, as well as enlarge some of the
bedrooms into suites so that the inn will be the best in town. After hearing these comments,
what should be the designer's FIRST course of action?
(A) Suggest that the client also retain an architect to determine the feasibility of enlarging
rooms and removing walls
(B) Ask the client if he has a budget, and suggest conducting a preliminary cost estimate to see
if he can afford what he wants
(C) Tell the client that he needs to define what he means by "the best in town", to give the
designer a more definite idea of how to proceed
(D) Recommend to the client that field measurements of the house be conducted, and begin
research on authentic Victorian furnishings and finishes
(C) heating system capacity and septic capacity - ANS A residential design in a rural area
involves the addition of two bedrooms and two bathrooms. Which of the following should be
the GREATEST concerns during the home's due diligence investigation?
(A) neighborhood character and zoning setbacks
(B) zoning setbacks and septic capacity
(C) heating system capacity and septic capacity
3 Copyright ©2025 SIRJOEL ALL RIGHTS RESERVED
