Note: Each question may have more than ONE choice as correct answers. e.g. answer: A, C, D. 1 mark will be deducted for wrong choice(s) for each question.

2) Regarding Data Flow Diagram (DFD), which of the following statement is/are TRUE?

A. Data flows must be an input or output of a Process Box. Physical flows are sometimes represented by a dotted line.

B. Data Flow diagram (DFD) is a type of diagram that represents the sequences of a process or workflow.

C. External entities (people, place or organizations) are sources or destinations of data that are lying outside the context of the system.

D. Data stores can hold permanent, temporary, historical or extract data. Files receive inputs and outputs only from Processes, NOT from Externals or other Files.

E. None of the above.

3) Which of the following about operational system characteristic is/are TRUE?

A. Reports from operational systems are often used to compare the performance of one period to another period and give useful feedbacks.

B. Operational systems produce periodic reports as output, e.g., weekly, daily and monthly reports.

C. Output information is very detailed, e.g., paychecks have details on the worksheet of each employees gross and net pay.

D. Transactions are frequent, repetitive and in high quantities.

E. None of the above.