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The following statements relate to project network. Choose the correct code for the statements being correct or incorrect.
Statement I: An activity cannot be represented by more than one arrow, but an arrow can represent one or more activities.
Statements II: The activities in a critical path can be preponed or postponed.
Statements II: The activities in a critical path can be preponed or postponed.
- a)Both the statements I and II are correct
- b)Both the statements I and II are incorrect
- c)Statement II is correct but I is incorrect
- d)Statements I is correct, but II is incorrect
Correct answer is option 'B'. Can you explain this answer?
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The following statements relate to project network. Choose the correct...
Understanding Project Network Statements
To analyze the correctness of the given statements about project networks, let’s break down each statement.
Statement I Explanation
- Single Activity Representation: In project networks, an activity is typically represented by a single arrow. This means that one specific activity cannot be depicted by multiple arrows simultaneously.
- Multiple Activities Representation: Conversely, an arrow can represent multiple activities in certain contexts, such as in a consolidated path where several activities are linked in succession.
- Conclusion: Statement I is incorrect because it states that an activity cannot be represented by more than one arrow, which is true; however, it incorrectly implies that one arrow cannot represent multiple activities, which can sometimes be the case.
Statement II Explanation
- Critical Path Flexibility: The critical path is defined as the longest sequence of activities that determines the minimum project duration. Activities on the critical path have no slack, meaning they cannot be delayed without affecting the overall project timeline.
- Postponement or Preponement: While theoretically, activities can be rescheduled, doing so on the critical path affects project completion time directly. Thus, saying they can be "preponed" (done earlier) or "postponed" (delayed) is misleading since any change will impact the project.
- Conclusion: Therefore, Statement II is incorrect because activities on the critical path should not be postponed or preponed without affecting the project's overall timeline.
Final Conclusion
Given the analysis of both statements:
- Statement I is incorrect.
- Statement II is incorrect.
Thus, the correct answer is option 'B': Both statements I and II are incorrect.
To analyze the correctness of the given statements about project networks, let’s break down each statement.
Statement I Explanation
- Single Activity Representation: In project networks, an activity is typically represented by a single arrow. This means that one specific activity cannot be depicted by multiple arrows simultaneously.
- Multiple Activities Representation: Conversely, an arrow can represent multiple activities in certain contexts, such as in a consolidated path where several activities are linked in succession.
- Conclusion: Statement I is incorrect because it states that an activity cannot be represented by more than one arrow, which is true; however, it incorrectly implies that one arrow cannot represent multiple activities, which can sometimes be the case.
Statement II Explanation
- Critical Path Flexibility: The critical path is defined as the longest sequence of activities that determines the minimum project duration. Activities on the critical path have no slack, meaning they cannot be delayed without affecting the overall project timeline.
- Postponement or Preponement: While theoretically, activities can be rescheduled, doing so on the critical path affects project completion time directly. Thus, saying they can be "preponed" (done earlier) or "postponed" (delayed) is misleading since any change will impact the project.
- Conclusion: Therefore, Statement II is incorrect because activities on the critical path should not be postponed or preponed without affecting the project's overall timeline.
Final Conclusion
Given the analysis of both statements:
- Statement I is incorrect.
- Statement II is incorrect.
Thus, the correct answer is option 'B': Both statements I and II are incorrect.
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The following statements relate to project network. Choose the correct...
Statement I: An activity cannot be represented by more than one arrow, but an arrow can represent one or more activities.
This statement is incorrect. In project network diagrams, an activity can indeed be represented by more than one arrow. In fact, it is common to have multiple arrows representing the same activity to indicate different dependencies or relationships with other activities. For example, an activity might have multiple predecessor activities or multiple successor activities, resulting in multiple arrows representing that single activity.
Statement II: The activities in a critical path can be preponed or postponed.
This statement is also incorrect. The critical path in a project network represents the longest path from the project's start to its completion, and it determines the minimum time required to complete the project. Activities on the critical path have zero float or slack, meaning they cannot be delayed without delaying the entire project. Similarly, they cannot be preponed or completed earlier without affecting the project's duration. The critical path activities must be executed as planned to ensure the project is completed within the shortest possible time.
Therefore, since both statements are incorrect, the correct answer is option (b): Both the statements I and II are incorrect.
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The following statements relate to project network. Choose the correct code for the statements being correct or incorrect.Statement I: An activity cannot be represented by more than one arrow, but an arrow can represent one or more activities.Statements II: The activities in a critical path can be preponed or postponed.a)Both the statements I and II are correctb)Both the statements I and II are incorrectc)Statement II is correct but I is incorrectd)Statements I is correct, but II is incorrectCorrect answer is option 'B'. Can you explain this answer?
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