Figure 7.2

-Which one of the following conditions violates the assumptions of PERT/CPM networks?
A) Some activities can have zero variance.
B) Costs increase linearly as activity time is reduced below its normal time.
C) Two activities tied together by an arc are overlapping and can be worked on simultaneously.
D) There can be more than one critical path in a network.

Question

Figure 7.2
 
-Which one of the following conditions violates the assumptions of PERT/CPM networks?
A) Some activities can have zero variance. 
B) Costs increase linearly as activity time is reduced below its normal time. 
C) Two activities tied together by an arc are overlapping and can be worked on simultaneously. 
D) There can be more than one critical path in a network.

Quizplus · Accepted Answer

PERT (Program Evaluation and Review Technique) and CPM (Critical Path Method) assume that activities are distinct and non-overlapping. When two activities tied together by an arc are overlapping and can be worked on simultaneously, it violates the assumption that activities in the network are sequential and independent.

Figure 7.2 -Which One of the Following Conditions Violates the Assumptions of Violates