Medium question 3
Read the following description regarding the development of a schedule, and answer
questions Q97 through Q100.
The sales management department of Company X plans to perform a version upgrade of
its inventory management system. The new inventory management system requires a
version upgrade of application software as well as an upgrade hardware.
Ms. B of the sales management department examines the situation with Ms. C of the systems department, to identify the work involved in performing the version upgrade of the
inventory management system.
Table: List of work necessary for version upgrade
Work No.
Description
Work days
S1
System backup
2
D1
Data extraction
2
D2
Data conversion
2
H1
Hardware procurement3
3
H2
Build hardware environment
2
S2
Install application software
2
S3
Customize application software
2
D3
Load data
1
S4
Operational test
3
In order to develop a schedule for the work, Ms. C creates the following arrow diagram.
D1
S1
H1
D2
H2
S2
S3
D3
Practice exam 1
*Work days are the number of days if Ms. C of the systems department is working alone.
S4
Figure: Arrow diagram for schedule
Q97.
Management
If the work is performed in the order as shown in the arrow diagram, which of the following is the appropriate description of the interdependency of the work?
a) Data conversion (D2) cannot be started until hardware procurement (H1) is completed.
b) Customization of application software (S3) cannot be started until data conversion (D2)
is completed.
c) Installation of application software (S2) can be started if the hardware environment is
built (H2).
d) Installation of application software (S2) is performed after hardware procurement (H1)
is completed.
338