Please answer all sub-parts - Thanks. 2. The project network and activity durati
ID: 378304 • Letter: P
Question
Please answer all sub-parts - Thanks.
2. The project network and activity durations for a maintenance of a computer network, including backups, reformatting the hard drive, etc. are listed below on the activity-on-node network diagram for the project. 3 2 8 2 path? Compute the early and late start schedules. What is the critical path? What is the duration of the critical How much can activity G be delayed without delaying the project? How much can activity B be delayed without delaying the project? Without delaying another activity A. B. C.Explanation / Answer
Possible parallel paths and their corresponding durations as follows :
A-B-F-J = 2 + 7 + 3 + 5 = 17
A-C-D-F-J = 2 + 8 + 3 + 3 + 5 = 21
A-C-D-H-J = 2 + 8 + 3 + 4 + 5 = 22
A-C-E-H-J = 2 + 8 + 4 + 4 + 5 = 23
A-C-G-H-J = 2 + 8 + 2 + 4 + 5 = 21
Out of above , A-C-D-H-J has the longest duration and hence forms the CRITICAL PATH
CRITICAL PATH IS A-C-D-H-J WITH DURATION 23
The early Start ( ES), Late start ( LS) , Early Finish ( EF), Late Finish ( LF) and Slack for each activity is presented below :
Activity
ES
LS
EF
LF
Slack
A
0
0
2
2
0
B
2
8
9
15
6
C
2
2
10
10
0
D
10
11
13
14
1
E
10
10
14
14
0
F
9
15
12
18
6
G
10
12
12
14
2
H
14
14
18
18
0
J
18
18
23
23
0
ACTIVITY G CAN BE DELAYED BY 2 DAYS WITHOUT DELAYING THE PROJECT
ACTIVITY B CAN BE DELAYED BY 6 DAYS WITHOUT DELAYING THE PROJECT
CRITICAL PATH IS A-C-D-H-J WITH DURATION 23