What is Dummy activity?

By Raj Vimal|Updated : October 10th, 2022

(A) Activity having Zero duration

(B) Activity shown by dotted line

(D) All of the above

A dummy activity is the activity having zero duration, shown by a dotted line, and shows dependency. It means all of the above options are correct. A dummy activity is used to keep a network diagram's logic consistent. The mock activity uses no resources because there is no actual activity in between the two such events. Additionally, it doesn't take up any time.

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Explain Dummy Activity

Even though there may not be any actual activity between two events when relationships are being established, and network diagrams are being drawn, an event cannot be regarded to have occurred until and until another event has also occurred. On the network diagram, such instances are represented as dummy activities. Only when it is absolutely necessary are dummy activities employed. The following is a picture of how dummy activity is symbolized:

The dotted lines indicate the dummy activity, which is between the numbers 2 and 3.

Summary:

What is Dummy activity? (A) Activity having zero duration (B) Activity shown by dotted line (C) Activity which shows dependency (D) All of the above

A dummy activity is a dotted-line activity with no duration that demonstrates independence. Dummy activities are used in the case of necessity. As per the Dummy activity characteristics, all of the above options is correct.