Network Analysis Set 4 — Test 1

Correct Answer: A. A. An event
Explanation: Slack is for an event and float is for an activity. In general, both can be interchangeable. A critical path always has zero float. Whether it is float or slack, it indicates that extra time is available for the non-critical activities without delaying the project duration with the given resources.

Correct Answer: C. C. Independent float
Explanation: Independent float can be used to apply the efforts of non-critical activities on critical activities to reduce the project duration. Independent float does not affect the floats of other succeeding or preceding activities.

Correct Answer: InvAlid answer

Correct Answer: A. A. It should be taken as zero
Explanation: Independent float can be used to apply the efforts of non-critical activities on critical activities to reduce the project duration. Independent float does not affect the float in other succeeding or preceding activities. If the independent float is negative, it should be considered as zero.

Correct Answer: B. B. Free float
Explanation: Free float requires a condition that all the non-critical activities should start as early as possible so that a surplus can be made available which is coined as free float.

Correct Answer: A. A. Total float
Explanation: Total float is the additional time available for non-critical activities without delaying the project duration. It may affect the floats of both the succeeding activities as well as preceding activities.

Correct Answer: D. D. 2 minutes
Explanation: We know that, Total float = Latest start time (LST) – Earliest start time (EST) (or) Latest finish time (LFT) – Earliest finish time (EFT) Total float = 12 – 10 = 2 minutes.

Correct Answer: A. A. 4 minutes
Explanation: We know that, Free float = Earliest start time (EST) of the head event – Earliest start time (EST) of the tail event – activity duration Free float = 10 – 2 – 4 = 4 minutes.

Correct Answer: B. B. A-e-f
Explanation: Critical activities are denoted using a thick arrow or by an arrow with double solid lines. In the given network diagram, activities A-E, E-F are critical activities. Hence, path A-E-F is the critical path.