Network Analysis MCQ with answer and solution

Concept

In a project network diagram, an activity is shown by an arrow connecting two nodes or events. The event at the arrow tip marks the completion of the activity.

Step-by-step solution

1. In CPM and PERT network diagrams, an activity is represented by an arrow. 2. The starting point or base of the arrow represents the beginning of the activity, known as the tail event. 3. The end point or arrow-head represents the completion of the activity, known as the head event. 4. Therefore, the occurrence of completion of an activity is called a head event. Answer: (A) Head Event

Explanation

An activity connects two events in a network diagram. The start of an activity is called the tail event. The end or completion of that activity is called the head event.

Why the other options are wrong

B: Tail event represents the beginning or start of an activity, not its completion. C: Dual role event is an event that acts as both a head event for one activity and a tail event for another. D: Completion event is an informal term and not the standard network term.

Shortcut

Arrow points from Tail to Head: Tail = Start, Head = End/Completion.

Common mistake

Students often mix up head and tail events or confuse the term with completion event, which is not standard terminology.