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Question 1Scheduling Fundamentals, Terminology, and Standards

In project scheduling terminology, what does the critical path of a network diagram represent?

  1. The longest path through the network, which determines the shortest possible project duration Correct answer.
  2. The path with the greatest amount of total float available for delay
  3. The sequence of activities with the highest total cost in the project budget
  4. The path containing the largest number of activities, regardless of their durations

Explanation

The critical path is defined by total duration, not activity count or cost. It is the longest continuous path from project start to finish, and therefore its length sets the minimum project completion time. Activities on it have zero total float when the project finishes at that duration.

Question 2Scheduling Fundamentals, Terminology, and Standards

A scheduler is documenting the calendar basis for a schedule. Which element specifies the working days, shifts, and holidays that govern when activities may be performed?

  1. The project calendar Correct answer.
  2. The cost baseline
  3. The resource histogram
  4. The responsibility assignment matrix

Explanation

A project calendar defines the working periods, nonworking periods, and holidays against which activity durations are calculated. Resource calendars can further restrict availability for specific resources. Without a defined calendar, duration estimates have no consistent meaning.

Question 3Scheduling Fundamentals, Terminology, and Standards

Which dependency type describes a situation where a successor activity cannot finish until its predecessor has finished?

  1. Finish-to-finish Correct answer.
  2. Start-to-finish
  3. Start-to-start
  4. Finish-to-start

Explanation

A finish-to-finish relationship means the successor's completion is constrained by the predecessor's completion, often with a lag. It is common where two activities must conclude together, such as testing and documentation handover. The other three types constrain start or finish in different combinations.

Question 4Scheduling Fundamentals, Terminology, and Standards

What does total float (slack) measure for a schedule activity?

  1. The difference between the activity's budgeted cost and actual cost
  2. The number of resources assigned to the activity beyond the planned level
  3. The amount of time an activity can be delayed without delaying its earliest successor
  4. The amount of time an activity can be delayed without delaying the project finish date Correct answer.

Explanation

Total float is the difference between late finish and early finish, or equivalently late start and early start, for an activity. It represents permissible delay before the project completion date is affected. Free float is the narrower measure tied to the earliest successor.

Question 5Scheduling Fundamentals, Terminology, and Standards

In earned value schedule analysis, which formula yields the schedule performance index (SPI)?

  1. EV divided by AC
  2. AC divided by EV
  3. PV divided by EV
  4. EV divided by PV Correct answer.

Explanation

The schedule performance index equals earned value divided by planned value. A value below one indicates less work was accomplished than planned at the status date. SPI measures schedule efficiency in cost terms and does not by itself indicate critical path status.

Question 6Scheduling Fundamentals, Terminology, and Standards

Which scheduling technique explicitly models uncertainty by using three-point estimates and probability distributions for activity durations?

  1. Monte Carlo simulation Correct answer.
  2. Rolling wave planning
  3. Critical chain method
  4. Precedence diagramming with lags

Explanation

Monte Carlo simulation samples duration distributions repeatedly to produce a probability distribution of project completion dates. It uses optimistic, most likely, and pessimistic estimates to build those distributions. The output supports confidence levels such as a P80 completion date.

Question 7Scheduling Fundamentals, Terminology, and Standards

What is the principal purpose of a schedule baseline?

  1. To document the resource rates used for cost estimating
  2. To provide an approved reference against which schedule performance is compared Correct answer.
  3. To record the actual start and finish dates of completed activities
  4. To list the assumptions made during activity duration estimating only

Explanation

The schedule baseline is the approved version of the schedule, frozen for performance measurement. Variances and progress are assessed against it, and changes require formal change control. Actual dates are tracked separately as schedule progress data.

Question 8Scheduling Fundamentals, Terminology, and Standards

An activity has an early start of day 5, an early finish of day 12, a late start of day 8, and a late finish of day 15 in a continuous-day convention. What is its total float?

  1. 0 days
  2. 3 days Correct answer.
  3. 7 days
  4. 4 days

Explanation

Total float equals late start minus early start, or late finish minus early finish. Here 8 minus 5 equals 3, and 15 minus 12 also equals 3. The activity can slip three days before affecting the project finish date.

Question 9Scheduling Fundamentals, Terminology, and Standards

A predecessor has a finish-to-start relationship with a successor and a lag of 4 days. The predecessor finishes on day 20. Under a continuous-day convention, when can the successor start?

  1. Day 24 Correct answer.
  2. Day 20
  3. Day 25
  4. Day 16

Explanation

A positive lag in a finish-to-start relationship adds waiting time between the predecessor's finish and the successor's start. Adding four days to day 20 gives day 24. Under a finish-to-start convention without lag, the successor would start the following working day.

Question 10Scheduling Fundamentals, Terminology, and Standards

During schedule compression, which approach typically increases project risk and cost by adding resources to critical path activities?

  1. Schedule network analysis
  2. Crashing Correct answer.
  3. Fast tracking
  4. Resource leveling

Explanation

Crashing shortens duration by adding resources or working overtime, which usually raises cost and can introduce risk. Fast tracking overlaps activities instead and increases rework risk without necessarily adding cost. Both are compression techniques but differ in their primary trade-offs.

Question 11Scheduling Fundamentals, Terminology, and Standards

A project manager needs to show cumulative schedule progress against the baseline over time in a bar-chart format. Which tool is most appropriate?

  1. A tracking Gantt chart Correct answer.
  2. A Pareto chart
  3. A responsibility assignment matrix
  4. A resource histogram

Explanation

A tracking Gantt chart displays baseline bars alongside actual progress bars, making slippage visible over time. It is the standard bar-chart format for comparing planned and actual dates. Histograms, RAMs, and Pareto charts serve different analytical purposes.

Question 12Scheduling Fundamentals, Terminology, and Standards

Resource leveling is applied to a schedule. What is the most likely consequence for the project finish date?

  1. The finish date may be extended because activities are shifted to resolve over-allocation Correct answer.
  2. The finish date usually moves earlier because resources are used more efficiently
  3. The finish date is unaffected because leveling only changes cost accounts
  4. The finish date becomes fixed because leveling removes all float from the network

Explanation

Resource leveling resolves periods of over-allocation by delaying activities within their float or, when float is insufficient, by extending the schedule. Because it can affect the critical path, the completion date may move later. Resource smoothing, by contrast, aims to preserve the finish date.

Question 13Scheduling Fundamentals, Terminology, and Standards

What distinguishes free float from total float for a given activity?

  1. Free float is measured against the earliest successor's early start; total float is measured against the project finish Correct answer.
  2. Free float is expressed in cost units; total float is expressed in time units
  3. Free float can be negative; total float can never be negative
  4. Free float applies only to critical activities; total float applies only to noncritical activities

Explanation

Free float is the delay permitted without affecting the early start of the earliest successor activity. Total float is the delay permitted without affecting the project completion date. Free float is therefore never greater than total float for the same activity.

Question 14Scheduling Fundamentals, Terminology, and Standards

A schedule shows an activity with a negative total float of 5 days. What does this indicate?

  1. The activity is not on the critical path and can be delayed safely
  2. The activity has five days of spare time before it affects the project finish
  3. The activity duration was underestimated by exactly five days
  4. The project cannot meet a specified constraint date unless the schedule is changed Correct answer.

Explanation

Negative float arises when a constraint date, such as an imposed finish milestone, is earlier than the calculated network dates. It signals that the network as planned cannot satisfy the constraint without compression or scope change. The magnitude indicates the required reduction.

Question 15Scheduling Fundamentals, Terminology, and Standards

Which statement correctly describes the relationship between a milestone and an activity in a schedule?

  1. A milestone has duration and consumes resources like any other activity
  2. A milestone is a summary of all activities in a work package
  3. A milestone must always lie on the critical path
  4. A milestone is a significant event with zero duration used to mark progress or contractual points Correct answer.

Explanation

Milestones are zero-duration markers denoting important points such as phase gates or contractual deliveries. Because they consume no time or resources, they serve as checkpoints in reporting. They may or may not fall on the critical path.

Question 16Scheduling Fundamentals, Terminology, and Standards

In the precedence diagramming method, which relationship allows a successor to start before its predecessor finishes, provided a defined overlap?

  1. Start-to-start with a lead Correct answer.
  2. Start-to-finish with a positive lag
  3. Finish-to-start with a positive lag
  4. Finish-to-finish with a positive lag

Explanation

A start-to-start relationship with a lead permits the successor to begin a specified interval after, or overlapping with, the predecessor's start. This models concurrent work where partial completion is sufficient to begin the next activity. A lead is effectively a negative lag.

Question 17Scheduling Fundamentals, Terminology, and Standards

A planner is converting a network into a time-scaled logic diagram. What is the primary benefit of this format?

  1. It displays activity durations and float directly against a calendar timeline Correct answer.
  2. It removes the need for a schedule baseline
  3. It replaces the need for resource calendars
  4. It guarantees the critical path will not change

Explanation

A time-scaled logic diagram positions activities along a calendar axis so durations and float are visually apparent. It combines network logic with a timeline view, aiding communication of sequencing. It does not eliminate baselines, resource calendars, or the possibility of critical path changes.

Question 18Scheduling Fundamentals, Terminology, and Standards

Which document formally authorizes the project and provides the high-level schedule constraints and milestones that shape schedule development?

  1. The activity list
  2. The project charter Correct answer.
  3. The issue log
  4. The resource breakdown structure

Explanation

The project charter authorizes the project and typically records summary milestones, imposed dates, and high-level constraints. These feed schedule development as inputs. The activity list and resource breakdown structure are derived planning outputs.

Question 19Scheduling Fundamentals, Terminology, and Standards

A project has a critical path duration of 40 days. An activity not on the critical path has early start day 10, late start day 18, duration 4 days, and its earliest successor has an early start of day 14. What are the activity's total float and free float?

  1. Total float 0 days; free float 0 days
  2. Total float 4 days; free float 4 days
  3. Total float 8 days; free float 4 days
  4. Total float 8 days; free float 0 days Correct answer.

Explanation

Total float is late start minus early start, 18 minus 10, which is 8 days. Free float is the earliest successor's early start minus this activity's early finish; early finish is 10 plus 4 equals 14, and 14 minus 14 is 0. The activity can slip eight days overall but any slip immediately delays its successor.

Question 20Scheduling Fundamentals, Terminology, and Standards

Two parallel paths exist between the same start and finish nodes. Path A has duration 30 days; path B has duration 26 days. A change adds 5 days to an activity on path B. What is the effect on the project's critical path?

  1. Path B becomes critical with 5 days of float on path A Correct answer.
  2. The project duration increases by 5 days while path A stays critical
  3. Path A remains critical with 4 days of float on path B
  4. Both paths become critical with zero float on each

Explanation

Path B grows from 26 to 31 days, exceeding path A's 30 days, so path B becomes the new critical path. Path A then has 1 day of float, not 5. The project duration rises from 30 to 31 days, an increase of 1 day.

Question 21Scheduling Fundamentals, Terminology, and Standards

A schedule uses a finish-to-start relationship with a 3-day lag between two activities, and the calendar has a weekend between them. A planner reports the successor's start as predecessor finish plus 3 calendar days. Why is this potentially incorrect?

  1. Lags are always expressed in working days on the project calendar unless otherwise specified Correct answer.
  2. The successor's start is determined only by its own duration
  3. Lags cannot be used with finish-to-start relationships
  4. Calendar days never apply to schedule calculations

Explanation

Lags and durations are normally interpreted against the assigned project or resource calendar, so a 3-day lag spans three working days and may cross a weekend in calendar terms. Reporting it as three calendar days can understate elapsed time. Explicit calendar assignment removes this ambiguity.

Question 22Scheduling Fundamentals, Terminology, and Standards

A scheduler feeds optimistic, most likely, and pessimistic duration estimates into a Monte Carlo simulation. The deterministic critical path is 60 days, while the simulation shows a P50 of 63 days and a P90 of 71 days. Which interpretation is most defensible?

  1. There is roughly a 90 percent probability of finishing within 71 days, so a commitment at 60 days carries schedule risk Correct answer.
  2. The P90 value proves the critical path calculation was wrong
  3. The project will finish in exactly 60 days because the critical path is deterministic
  4. The simulation guarantees completion no later than 71 days

Explanation

Monte Carlo output expresses completion probabilities, so P90 means about a 90 percent chance of finishing by that date. The deterministic 60-day value ignores duration uncertainty and near-critical path merging. Committing to 60 days therefore accepts substantial risk of overrun.

Question 23Scheduling Fundamentals, Terminology, and Standards

A project must meet an imposed finish date 10 days earlier than the calculated network duration. Which combination best describes valid responses available to the scheduler?

  1. Ignore the constraint because imposed dates do not affect float
  2. Extend all noncritical activity durations to absorb the difference
  3. Remove the schedule baseline and reissue it without change control
  4. Compress the schedule through crashing or fast tracking, or renegotiate the constraint date Correct answer.

Explanation

When a constraint creates negative float, the scheduler can compress the critical path, change logic or scope, or renegotiate the date with the sponsor. Each option carries trade-offs in cost, risk, or scope. Ignoring the constraint or bypassing change control is not a valid scheduling response.

Question 24Scheduling Fundamentals, Terminology, and Standards

In a schedule network, an activity has a start-to-start relationship with a 2-day lag to its successor, and the successor has a 5-day duration. The predecessor starts on day 1 and lasts 10 days. Ignoring calendars, what is the earliest the successor can finish?

  1. Day 7
  2. Day 8 Correct answer.
  3. Day 15
  4. Day 12

Explanation

The successor's start is constrained to the predecessor's start plus the 2-day lag, so it starts on day 3. With a 5-day duration, its earliest finish is day 7 under a start-counting convention of day 3 plus 5 minus 1. The predecessor's finish does not constrain this start-to-start link.

Question 25Schedule Development and Work Breakdown Structure

In a work breakdown structure, which characteristic distinguishes a work package from higher-level WBS elements?

  1. It represents the total project scope and is placed at the top of the hierarchy
  2. It defines the organizational reporting structure rather than the scope of work
  3. It can be assigned to a single responsible person or team for cost and schedule control Correct answer.
  4. It is a deliverable-oriented grouping that may still contain sub-deliverables

Explanation

A work package is the lowest level of the WBS, where work is small enough to estimate, schedule, and assign to one accountable owner. Higher WBS levels aggregate deliverables and are decomposed until that control point is reached.

Question 26Schedule Development and Work Breakdown Structure

A scheduler needs a tool that shows the sequence of activities, their durations, and the dependencies between them on a time-scaled chart. Which scheduling technique best meets this need?

  1. Cost baseline
  2. Responsibility assignment matrix
  3. Resource histogram
  4. Precedence diagram with a time scale Correct answer.

Explanation

A time-scaled precedence diagram displays activities, durations, and logical links along a calendar axis, making sequence and timing visible. It is the classic network schedule format used for communicating the plan.

Question 27Schedule Development and Work Breakdown Structure

Which statement correctly describes the relationship between the WBS and the project schedule?

  1. The WBS and schedule are independent documents with no linkage
  2. The schedule expands each work package into activities, while the WBS defines the scope those activities must deliver Correct answer.
  3. The WBS is created from the schedule's critical path
  4. The schedule replaces the WBS once baseline is set

Explanation

The WBS establishes the deliverable-oriented scope, and schedule activities are derived by decomposing work packages. This linkage ensures every scheduled activity traces back to authorized scope.

Question 28Schedule Development and Work Breakdown Structure

On a precedence network, an activity has an early start of day 5, a duration of 4 days, and a finish-to-start predecessor with zero lag. Assuming a standard 1-day work period, what is its early finish?

  1. Day 9
  2. Day 7
  3. Day 10
  4. Day 8 Correct answer.

Explanation

Early finish equals early start plus duration minus one in a 1-day work period convention. Here 5 + 4 − 1 = 8, so the activity finishes at the end of day 8.

Question 29Schedule Development and Work Breakdown Structure

Which technique is used to compress a schedule by overlapping activities that would normally be performed sequentially?

  1. Crashing
  2. Fast tracking Correct answer.
  3. Rolling wave planning
  4. Resource leveling

Explanation

Fast tracking compresses duration by performing activities in parallel that were originally planned in sequence, often increasing risk. Crashing instead adds resources to shorten durations.

Question 30Schedule Development and Work Breakdown Structure

What is the primary purpose of a milestone in a project schedule?

  1. To define the cost of a work package
  2. To allocate resources across multiple activities
  3. To represent a significant point or event with zero duration Correct answer.
  4. To calculate the total float of the critical path

Explanation

A milestone marks a significant event or achievement and has zero duration by definition. Milestones are used for reporting and control points rather than for consuming time or resources.

Question 31Schedule Development and Work Breakdown Structure

Which WBS decomposition guideline helps ensure that a schedule can be developed and controlled effectively?

  1. Decompose until each element equals a single day of work
  2. Decompose only the costliest branches and leave others unelaborated
  3. Decompose every branch to an identical number of levels
  4. Decompose to a level where work packages can be estimated, scheduled, and assigned Correct answer.

Explanation

The 100 percent rule and progressive elaboration guide decomposition to a level where work is manageable for estimating and scheduling. Uniform depth is not required; branches are decomposed as far as needed for control.

Question 32Schedule Development and Work Breakdown Structure

An activity has an early start of day 10, a late start of day 16, an early finish of day 14, and a late finish of day 20. What is its total float?

  1. 4 days
  2. 10 days
  3. 2 days
  4. 6 days Correct answer.

Explanation

Total float equals late start minus early start (or late finish minus early finish). Here 16 − 10 = 6 and 20 − 14 = 6, confirming a total float of 6 days.

Question 33Schedule Development and Work Breakdown Structure

A project team must schedule work in an environment of high uncertainty where scope will be progressively detailed as more information becomes available. Which approach is most appropriate?

  1. A schedule that omits dependencies to preserve flexibility
  2. Rolling wave planning with progressively elaborated schedule detail Correct answer.
  3. A schedule built only from the highest-level WBS elements
  4. A single fully detailed schedule frozen at project start

Explanation

Rolling wave planning elaborates near-term work in detail while leaving far-term work at a higher level until more information is known. This suits high-uncertainty projects and aligns with progressive elaboration.

Question 34Schedule Development and Work Breakdown Structure

A scheduler identifies that a non-critical activity has 3 days of total float and 1 day of free float. If the activity is delayed by 2 days, what is the effect?

  1. It delays the successor's early start by 1 day
  2. It has no effect on either total or free float
  3. It makes the activity critical and delays project completion
  4. It consumes total float but does not delay the successor's early start Correct answer.

Explanation

A delay within free float does not affect the successor's early start, and a delay within total float does not delay project completion. A 2-day delay exceeds the 1-day free float but stays within the 3-day total float, so only total float is reduced.

Question 35Schedule Development and Work Breakdown Structure

Which dependency type allows the successor to start only after the predecessor has finished?

  1. Start-to-start
  2. Start-to-finish
  3. Finish-to-start Correct answer.
  4. Finish-to-finish

Explanation

A finish-to-start relationship requires the predecessor to complete before the successor can begin. It is the most common dependency type in precedence networks.

Question 36Schedule Development and Work Breakdown Structure

A project manager wants to reduce the schedule duration at the lowest additional cost. Which step should be taken first?

  1. Crash the activity with the longest duration regardless of path
  2. Reduce scope without approval
  3. Fast track all activities simultaneously
  4. Crash the activity on the critical path with the lowest cost per unit of time saved Correct answer.

Explanation

Cost-effective crashing targets critical-path activities with the smallest cost slope, because only critical activities shorten the project duration. Crashing non-critical or longest activities may add cost without reducing duration.

Question 37Schedule Development and Work Breakdown Structure

What does a resource-leveling heuristic typically do to a schedule?

  1. It recalculates the critical path without changing any dates
  2. It always shortens the schedule by removing idle resources
  3. It may extend the schedule beyond the critical path duration to smooth resource demand Correct answer.
  4. It eliminates all float from non-critical activities

Explanation

Resource leveling adjusts activity start and finish dates to resolve resource over-allocation, which can extend the project duration and change the critical path. It prioritizes resource limits over schedule compression.

Question 38Schedule Development and Work Breakdown Structure

Which of the following best describes a critical path in a project network?

  1. The path with the most activities regardless of duration
  2. The path containing only milestones
  3. The longest path through the network, determining the shortest project duration Correct answer.
  4. The path with the highest resource cost

Explanation

The critical path is the longest-duration path through the network and therefore sets the minimum project completion time. Activities on it have zero or negative total float.

Question 39Schedule Development and Work Breakdown Structure

A WBS dictionary entry for a work package should include which element to support schedule development?

  1. The historical cost of unrelated projects
  2. A description of the work, associated activities, and acceptance criteria Correct answer.
  3. The organizational chart of the entire company
  4. The personal performance ratings of team members

Explanation

The WBS dictionary describes the work package's scope, deliverables, activities, and acceptance criteria, which directly supports activity definition and scheduling. It is a scope document, not an HR or unrelated cost record.

Question 40Schedule Development and Work Breakdown Structure

In a schedule network, a lead is used to do which of the following?

  1. Allow a successor to begin before the predecessor finishes Correct answer.
  2. Convert a finish-to-start link into a milestone
  3. Remove a dependency entirely
  4. Add waiting time between predecessor and successor

Explanation

A lead is a negative lag that permits the successor to start before the predecessor completes, effectively overlapping activities. A lag, by contrast, adds waiting time.

Question 41Schedule Development and Work Breakdown Structure

A project has two parallel paths: Path A totals 18 days and Path B totals 15 days. A new mandatory dependency adds 4 days to Path B. What is the new project duration and critical path?

  1. 15 days on Path B
  2. 18 days on Path A
  3. 19 days on Path B Correct answer.
  4. 22 days on Path A

Explanation

Adding 4 days to Path B raises it to 19 days, which exceeds Path A's 18 days, making Path B the new critical path. The project duration equals the longest path, 19 days.

Question 42Schedule Development and Work Breakdown Structure

Which statement about the schedule baseline is accurate?

  1. It is revised continuously without change control
  2. It is the approved version of the schedule against which performance is tracked Correct answer.
  3. It is created before scope is defined
  4. It is identical to the WBS dictionary

Explanation

The schedule baseline is the approved, time-phased schedule used to measure progress and performance. Changes to it require formal integrated change control.

Question 43Schedule Development and Work Breakdown Structure

An activity has a total float of 5 days and is delayed by 5 days. What is the effect on the project completion date?

  1. The project completes 5 days early
  2. A 5-day delay to project completion
  3. No delay to project completion, but the activity becomes critical Correct answer.
  4. A 10-day delay to project completion

Explanation

Consuming all available total float makes the activity critical but does not extend the project beyond its planned completion. Any further delay would then push the project end date.

Question 44Schedule Development and Work Breakdown Structure

A project manager must determine the sequence of activities. Which input is most directly used in the sequence activities process?

  1. The stakeholder register and the communications plan
  2. The activity list and the milestone list Correct answer.
  3. The cost baseline and the resource histogram
  4. The risk register and the procurement plan

Explanation

Sequencing relies on the activity list, activity attributes, and milestone list to establish logical relationships. Cost, risk, and communications documents are not primary sequencing inputs.

Question 45Schedule Development and Work Breakdown Structure

A project uses a 3-point estimate for an activity: optimistic 4 days, most likely 6 days, pessimistic 14 days. Using the PERT weighted formula, what is the expected duration?

  1. 8 days
  2. 6 days
  3. 9 days
  4. 7 days Correct answer.

Explanation

PERT expected duration equals (optimistic + 4 × most likely + pessimistic) ÷ 6. Here (4 + 24 + 14) ÷ 6 = 42 ÷ 6 = 7 days.

Question 46Schedule Development and Work Breakdown Structure

A scheduler observes that crashing one critical activity by 2 days shifts a previously non-critical path onto the critical path. What is the most accurate conclusion?

  1. The previously non-critical path can be ignored
  2. The project duration is now guaranteed to be 2 days shorter
  3. Crashing is no longer a valid technique
  4. Further crashing must be reassessed because the critical path has changed Correct answer.

Explanation

Crashing can create a new critical path once the shortened path meets or falls below another path's duration. Subsequent compression decisions must target the new critical path to be effective.

Question 47Schedule Development and Work Breakdown Structure

During schedule control, earned value data show schedule performance index (SPI) of 0.85. Which interpretation is most appropriate?

  1. The SPI value has no relationship to schedule performance
  2. The project is exactly on schedule
  3. The project is progressing slower than planned and schedule variance is negative Correct answer.
  4. The project is ahead of schedule and under budget

Explanation

An SPI below 1.0 indicates less work has been accomplished than planned for the time elapsed, meaning the project is behind schedule with negative schedule variance. SPI above 1.0 would indicate being ahead of schedule.

Question 48Schedule Development and Work Breakdown Structure

A WBS branch is decomposed into three child elements estimated at 10, 15, and 20 days. A fourth child element is added later without adjusting the parent. Which principle is violated?

  1. The rolling wave rule, because all elements must be detailed equally
  2. The critical path method, because durations must be equal
  3. The resource leveling rule, because resources must be balanced
  4. The 100 percent rule, because child elements must sum to the parent's full scope Correct answer.

Explanation

The 100 percent rule requires that the sum of child elements represent exactly 100 percent of the parent's scope. Adding scope to a child without updating the parent breaks that consistency.

Question 49Activity Sequencing, Durations, and Logic Relationships

In a finish-to-start relationship with a 3-day lag between Activity A and Activity B, and A finishing on day 10, on which day can B start?

  1. Day 10
  2. Day 11
  3. Day 7
  4. Day 13 Correct answer.

Explanation

A finish-to-start lag delays the successor's start by the lag value after the predecessor finishes, so 10 + 3 = day 13. Lag is added to the relationship, not to the predecessor's duration.

Question 50Activity Sequencing, Durations, and Logic Relationships

Which statement correctly describes a start-to-start relationship with a 5-day lag?

  1. The successor cannot start until 5 days after the predecessor finishes
  2. The successor cannot finish until 5 days after the predecessor finishes
  3. The successor cannot finish until 5 days after the predecessor starts
  4. The successor cannot start until 5 days after the predecessor starts Correct answer.

Explanation

In SS logic the successor's start is tied to the predecessor's start, and a lag pushes the successor start later by the lag amount. The finish dates are not directly constrained by an SS relationship.