Critical Path doubt

Submitted by jason on Fri, 08/08/2008 - 14:46

Hi Forum,

The following is a practice question from a pmp class I attended sometime ago. I have forgotten the reason for the answer. I hope to hear what answer you would choose and why.  

 

 An  AON  Network diagram  has these 2 critical paths :

D-E-J-L and D-E-G-I-L.

Except for activity L which has duration of 1 day, the rest have 3 days.

To reduce the project by 1 day, which activity(s)  is/are most likely to change?   Why?

 

a. L

b. E or J

c. G or I

d. D or E

 

regards

Jason

Forums: 
PMP / CAPM exam Question bank
  • Log in to post comments
  • 2096 reads
admin's picture

admin

Tue, 08/12/2008 - 06:42

There is something wrong with quesiton.  I can see only 1 critical path DEGIL taking 13 days , DEJL is taking 10 days.

Please check.

crabapple

Tue, 08/12/2008 - 15:42

DEJL takes 10 days

DEGIL takes 13 days

So, shaving 1 day from DEJL accomplishes nothing where as it makes sense to remove a day from DEGIL path which will make a direct impact.

the answer would be 'c'

did it make sense? i may be wrong also...

BaglanTiger

Sat, 08/16/2008 - 03:07

HI,

Same effect can be achieved by reducing the activity of D or E also which would make DEJL as 9 days and DEGIL as 12 days.

Or may be "most likely" phrase indicates the answer to C.

Or there is insufficient information in the question.

Regards

George

Tue, 09/02/2008 - 08:15

Answer: D

Since both paths are critical they have the same duration, that is the duration of J activity i.e. 3 days. That implies that activities G and I do not have a FS but a SS relation (PDMs support relations others than FS). So, to definitely decrease duration one day (without eliminating L activity) you have to reduce D or E.

Does it make sense?

Cheers and Bye

George

 

 

jason

Mon, 09/08/2008 - 10:45

While all replies seems logical and reasonable, I have to go with George's answer.

Thanks!