Choose the correct statement regarding dummy activity in a network.
- AIt requires time and does not require resources
- BIt does not require time and requires resources
- CIt does not require time and resourcesCorrect
- DIt requires both time and resource
Solution
Concept
Characteristics of dummy activity in networks
Formula
NONE
Step-by-step solution
1. A dummy activity is inserted in network diagrams to establish logical dependencies. 2. It does not represent actual work or effort in the project execution. 3. Therefore, a dummy activity does not require time and resources. Answer: C
Explanation
A dummy activity is a hypothetical activity represented by a dashed arrow in a network diagram purely to establish proper logical relationships and precedence between events. Because it serves only a structural logic purpose, it consumes zero time and zero resources. Therefore, option C is the correct statement.
Why the other options are wrong
A) Dummy activities consume zero time in network models. B) Dummy activities consume zero resources in network models. D) Dummy activities do not consume either time or resources.
Shortcut
Dummy activity consumes ZERO time and ZERO resources.
Common mistake
Assuming dummy activities consume time or resources rather than merely representing logical dependencies.
Correct answer: C) It does not require time and resources