An external entity in a DFD: Select one:

a. only receives outputs from the system.

b. only provides inputs to the system.

c. can perform information processing.

d. is an entity that is outside the organisation.

e. cannot perform data processing activities.

2 A systems flowchart:

Select one:

a. must always contain on-page connectors.

b. includes physical as well as electronic flows.

c. requires more than one entity.

d. must always have a data store if there are paper documents involved.

e. must be balanced.

3 A balanced set of DFDs (logical, physical and context) (i) must have the same external entities, (ii) must have the same number of bubbles in the logical and physical DFDs, (iii) cannot contain only one external entity, (iv) must have the same number of flows to and from external entities, (v) require that the number of flows in the system is the same in the logical and physical DFDs.

Select one:

a. iv and v

b. i and ii

c. ii and v

d. iii and v

e. i and iv

4 A logical DFD shows:

Select one:

a. how a process is performed.

b. the groups of entities logically involved in a business process.

c. the methods for performing activities in a process.

d. the logical grouping of activities in a business process.

e. none of the above.