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Sample Questions Chapter 4—Documenting Information Systems TRUE/FALSE 1.
Flowcharts are commonly used for new systems implementations, business process reengineering, finance function transformations, and assessments of internal controls.
ANS: T PTS: 1 2.
Data flow diagrams (DFDs) depict a system’s components; the data flows among the components; and the sources, destinations, and storage of data.
ANS: T PTS: 1 3.
Data flow diagrams (DFDs) present a comprehensive picture of the management, operations, information systems and process controls embodied in business processes.
ANS: F PTS: 1 4.
A data flow diagram (DFD) is a graphical representation of a system, which depicts the system’s components, data flows and the sources, destinations and storage of data.
ANS: T PTS: 1 5.
System flowcharts use only four symbols.
ANS: F PTS: 1 6.
Systems documentation is used to understand, explain, evaluate, and improve complex business processes, information systems, and internal controls.
ANS: T PTS: 1 7.
In a data flow diagram (DFD), a bubble symbol shown below depicts an entity or a process within which incoming data flows are transformed into outgoing data flows.
ANS: T PTS: 1
8.
The advantage of a physical data flow diagram (DFD) versus a logical data flow diagram (DFD) is that we can concentrate on what activities a system is performing without having to specify how, where or by whom.
ANS: F PTS: 1 9.
In a data flow diagram (DFD), a square represents an internal entity.
ANS: F PTS: 1 10.
In a data flow diagram (DFD), two parallel lines represent the data store symbol.
ANS: T PTS: 1 11.
The following symbol represents general purpose inputoutput.
ANS: F PTS: 1 12.
The following symbol represents a computer process.
ANS: T PTS: 1 13.
The following symbol represents a manual process
ANS: T PTS: 1 14.
The following symbol represents a disk data store
ANS: F PTS: 1 15.
The following symbol represents a paper file.
ANS: T PTS: 1 16.
The following symbol represents a document.
ANS: F PTS: 1 17.
In a data flow diagram (DFD), an external entity symbol portrays a source or a destination of data outside the system.
ANS: T PTS: 1 18.
A context diagram is a toplevel diagram of a system that depicts the system and all its activities as a single bubble.
ANS: T PTS: 1 19.
A customer is an example of an internal entity.
ANS: F PTS: 1 20.
Internal entities do not perform any information processing activities.
ANS: F PTS: 1 21.
An external entity is a person, place, or thing within the system that transforms data.
ANS: F PTS: 1 22.
A physical data flow diagram (DFD) uses bubbles to specify where, how, and by whom a system’s processes are accomplished.
ANS: T PTS: 1 23.
When the context diagram and the level 0 diagram have equivalent external data flows, the DFDs are said to be balanced.
ANS: T PTS: 1 24.
The successive subdivision, or exploding, of logical data flow diagrams (DFDs) is called bottom up partitioning.
ANS: F PTS: 1 25.
A systems flowchart is a graphical representation of both the physical and logical features of an information system.
ANS: T PTS: 1 26.
Processes that handle otherthannormal situations are called exception routines.
ANS: T PTS: 1 27.
Information processing activities retrieve data from storage, transform data, or file data.
ANS: T PTS: 1 28.
An acceptance stub is a data flow that leaves a bubble but does not go to any other bubble or file and indicates processing that is performed in other than normal situations.
ANS: F PTS: 1 29.
In an enterprise system, we would have one data store/disk symbol labeled “enterprise database” instead of two or more data store symbols.
ANS: T PTS: 1 30.
When we convert to an enterprise system, reengineered processes often result from the installation and can cause changes throughout the systems flowcharts.
ANS: T PTS: 1 31.
Systems flowcharts portray business process activities, stores of data, and flows of data among those elements without presenting the physical details of those elements.
ANS: F PTS: 1 32.
Data flow diagrams (DFDs) portray a business process’ activities, stores of data, and flows of data among those elements.
ANS: T PTS: 1 33.
In a data flow diagram, a square represents a source or destination of data outside the system.
ANS: T PTS: 1 34.
In a systems flowchart, two parallel lines represent the data store symbol.
ANS: T PTS: 1 35.
Internal entities are included on both data flow diagrams (DFDs) and systems flowcharts.
ANS: T PTS: 1
36.
Internal entities are included on data flow diagrams (DFDs) but not on systems flowcharts.
ANS: F PTS: 1 37.
External entities are persons, places, or things outside the context of the system.
ANS: T PTS: 1 38.
The successive subdividing, or “exploding,” of physical data flow diagrams (DFDs) is called topdown partitioning.
ANS: F PTS: 1 39.
On a systems flowchart the start/stop symbol can also be an external entity.
ANS: T PTS: 1 40.
There can be only one correct logical data flow diagram (DFD) for any system.
ANS: F PTS: 1 MULTIPLE CHOICE 1.
A symbol used in data flow diagrams (DFDs) to depict an entity or process within which incoming data flows are transformed into outgoing data flows is a(n): a.
data flow symbol
b.
external entity symbol
c.
bubble symbol
d.
data store symbol
ANS: C PTS: 1 2.
A data flow diagram (DFD) could contain each of the following symbols except: a.
a bubble or circle
b.
an octagon
c.
a square
d.
a curved line with an arrow head
ANS: B PTS: 1 3.
Which of the following data flow diagram (DFD) symbols is represented by two parallel lines? a.
data flow symbol
b.
external entity symbol
c.
internal entity symbol
d.
data store symbol
ANS: D PTS: 1 4.
Which data flow diagram (DFD) symbol portrays a source or destination of data outside the system? a.
data flow symbol
b.
external entity symbol
c.
bubble symbol
d.
data store symbol
ANS: B PTS: 1 5.
Which data flow diagram (DFD) symbol is portrayed by two parallel lines? a.
data flow
b.
data store
c.
external entity
d.
internal entity or process
ANS: B PTS: 1 6.
Which data flow diagram (DFD) symbol is usually portrayed with a square? a.
data flow
b.
data store
c.
external entity
d.
process or internal entity
ANS: C PTS: 1 7.
Which data flow diagram (DFD) symbol is usually portrayed with an arrow? a.
data flow
b.
data store
c.
external entity
d.
process or internal entity
ANS: A PTS: 1 8.
In the topdown partitioning of process 3.0, the next level’s process bubbles would be labeled (assuming there are four subprocesses): a.
1.3, 2.3, 3.3, 4.3
b.
3.A, 3.B, 3.D, 3.D
c.
3.1, 3.2, 3.3, 3.4
d.
3.1.1, 3.1.2, 3.1.3, 3.1.4
ANS: C PTS: 1 9.
Which of the following data flow diagram (DFD) guidelines is correct? a.
include within the system context any entity that performs one or more information processing activities
b.
read computer data stores from the process bubble that requires the data
c.
include within the system context any entity in the system narrative
d.
data flows should never go from higher to lowernumbered bubbles
ANS: A PTS: 1 10.
Which of the following systems flowcharting guidelines is correct? a.
documents or reports printed by a central computer should first be show in that computer’s column
b.
sequential process steps, with no intervening delay, should be shown as one process
c.
divide the flowchart into columns, one for each internal entity, and label each column
d.
use a manual process symbol to show the sending or filing of a document
ANS: C PTS: 1 11.
Those entities which perform no information processing activities for the system are called: a.
external entities
b.
internal entities
c.
boundary entities
d.
environmental entities
ANS: A PTS: 1 12.
Which symbol can be either an entity or a process depending on the type of data flow diagram (DFD)? a.
bubble symbol
b.
external entity symbol
c.
data flow symbol
d.
data store symbol
ANS: A PTS: 1 13.
Which of the following is the least detailed of the data flow diagrams? a.
logical data flow diagram
b.
systems flowchart
c.
context diagram
d.
physical data flow diagram
ANS: C PTS: 1 14.
In a physical data flow diagram (DFD), this is something within the system that transforms data. a.
data flow
b.
data store
c.
external entity
d.
internal entity
ANS: D PTS: 1 15.
In a physical data flow diagram (DFD), a bubble or circle could be used to specify each of the following except: a.
where a process is performed
b.
how a process is performed
c.
by whom a process is performed
d.
what process is performed
ANS: D PTS: 1 16.
Which type of data flow diagram specifies where, how, and by whom a system’s processes are performed? a.
context diagram
b.
physical data flow diagram
c.
logical data flow diagram
d.
systems flowchart
ANS: B PTS: 1 17.
A person, place, or thing within a system that transforms data is called: a.
external entity
b.
data store
c.
internal entity
d.
Boundary
ANS: C PTS: 1 18.
Which data flow diagram shows what activities the system is performing without having to specify how, where, or by whom the activities are accomplished? a.
context diagram
b.
physical data flow diagram
c.
systems flowchart
d.
logical data flow diagram
ANS: D PTS: 1 19.
A _______________ depicts a system’s infrastructure. a.
context diagram
b.
physical DFD
c.
logical DFD
d.
system flowchart
ANS: B PTS: 1 20.
In which of the following data flow diagrams does the bubble symbol represent a process and not the entire system? a.
context diagram
b.
physical data flow diagram
c.
logical data flow diagram
d.
systems flowchart
ANS: C PTS: 1 21.
In a logical data flow diagram (DFD) for a cash receipts system, each of the following labels might appear in a bubble except: a.
cashier
b.
capture cash receipt
c.
prepare deposit
d.
record customer payment
ANS: A PTS: 1 22.
The data flows in a logical data flow diagram (DFD) show: a.
how the data are transmitted
b.
where the data are transmitted
c.
the nature of the data being transmitted
d.
who transmits the data
ANS: C PTS: 1 23.
When two data flow diagrams (DFDs) have equivalent external data flows, we say that the two data flow diagrams are: a.
congruent
b.
similar
c.
balanced
d.
equal
ANS: C PTS: 1 24.
A process in which successive layers of data flow diagrams (DFDs) are constructed by “exploding” the bubbles on a less detailed DFD to show more detailed data flows is called: a.
topdown partitioning
b.
serial expansion
c.
balanced construction
d.
expanded data flows
ANS: A PTS: 1 25.
Which of the following statements related to the construction of data flow diagrams (DFDs) is false? a.
The level 0 diagram is the next level down from the context diagram.
b.
If the level 0 diagram has one arrow going into bubble number 1.0 and two arrows leaving bubble number 1.0 diagram 1.0 will show one arrow entering and two arrows leaving.
c.
Sources and destinations are depicted by parallel horizontal lines, between which the name of the entity is sh
d.
Arrows represent a pathway for data.
ANS: C PTS: 1 26.
A systems flowchart varies from a data flow diagram (DFD) because it: a.
only represents the information system
b.
only represents the operations system
c.
only represents the management system
d.
represents the management system, the operations system, and the information system
ANS: D PTS: 1 27.
Information processing activities include: a.
only automated activities
b.
activities that retrieve, transform, and file data
c.
the sending of data between entities
d.
operational activities
ANS: B PTS: 1 28.
Why do auditors and systems analysts use systems documentation? a.
to understand, explain, and improve complex systems
b.
only to provide justification to management for systems investments
c.
to reduce the number and amount of external entities
d.
to eliminate evidence to be collected
ANS: A PTS: 1 29.
On a systems flowchart, computer processing is represented by a: a.
Square
b.
Trapezoid
c.
Rectangle
d.
Parallelogram
ANS: C PTS: 1 30.
On a systems flowchart, a paper file is represented by a: a.
Triangle
b.
Cylinder
c.
Rectangle
d.
Pentagon
ANS: A PTS: 1 31.
On a systems flowchart, a solid line with an arrow indicates a(n): a.
batch total
b.
telecommunications link
c.
offpage connector
d.
logical flow
ANS: D PTS: 1 32.
Which of the following systems flowcharting symbol descriptions is incorrect?
a.
Disk
b.
computer process
c.
manual process
d.
Display
ANS: C PTS: 1 33.
Which of the following systems flowcharting symbols descriptions is incorrect?
a.
Tape
b.
onpage connector
c.
start/stop
d.
paper file
ANS: D PTS: 1 34.
Which of the following systems flowcharting symbols descriptions is incorrect?
a.
general purpose inputoutput
b.
manual process
c.
multiplepage document
d.
punched card
ANS: D PTS: 1 35.
How many circles (bubbles) are included in a correctly drawn context diagram? a.
Zero
b.
One
c.
Three
d.
Between five and seven bubbles
ANS: B PTS: 1 36.
An information processing activity could be any of the following except: a.
sending or receiving data between entities
b.
document preparation
c.
data entry
d.
data verification
ANS: A PTS: 1 37.
In drawing a context diagram, we should include: a.
only exception routines
b.
only error routines
c.
only normal processing routines
d.
only normal processing and exception routines
ANS: C PTS: 1 38.
Bubbles are labelled with nouns in a.
physical data flow diagrams
b.
logical data flow diagrams
c.
both physical and logical data flow diagrams
d.
neither physical nor logical data flow diagrams
ANS: A PTS: 1
39.
On a logical data flow diagram (DFD), data flows: a.
always go from a highernumbered to a lowernumbered bubble
b.
never go from a highernumbered to a lowernumbered bubble
c.
can go in either direction as needed
d.
must go from a bubble to a square
ANS: B PTS: 1 40.
All of the following are “guidelines” for grouping activities in a level 0 DFD except: a.
group activities if they occur in the same place and at the same time
b.
group activities if they occur at different times in the same place
c.
group activities if they occur at the same time but in different places
d.
group activities that seem to be logically related
ANS: B PTS: 1
41.
When a transaction cannot be processed in a routine fashion because of an error or other processing problems, the transaction must be handled by a(n): a.
rejection routine
b.
change report
c.
exception and summary report
d.
exception routine
ANS: D PTS: 1 42.
The following is a jumbled list of the activities suggested in this text for drafting data flow diagrams (DFDs) for an existing system:
I.
Prepare a table of entities and activities.
II.
Prepare an annotated table of entities and activities.
III.
Draw a physical data flow diagram.
IV.
Draw a logical data flow diagram.
V.
Draw a context diagram.
The best sequence for undertaking these activities is:
a.
I, II, V, III, IV
b.
I, V, III, II, IV
c.
II, I, III, V, IV
d.
II, IV, III, I, V
ANS: B PTS: 1 43.
Examine the following context diagram and the related level 0 logical DFD. Which of the following statements is true?
a.
The diagrams are prepared correctly.
b.
A context diagram must have a least two external entities.
c.
The diagrams are not balanced.
d.
None of the above are true.
ANS: C PTS: 1 44.
Which statement concerning the following diagram 1.0 logical data flow diagram (DFD) is true?
a.
The data flow diagram follows DFD guidelines.
b.
An arrow should never leave a bubble with no destination.
c.
Data should only flow from a data store.
d.
Data flow diagrams (DFDs) at this level should show the external entities.
ANS: A PTS: 1 45.
Which of the following segments violates guidelines for creating systems flowcharts?
a.
Segment a.
b.
Segment b.
c.
Segment c.
d.
Segment d.
ANS: A PTS: 1 46.
The following systems flowchart segment depicts a data entry clerk keying data from a source document into a business event data store. Which statement is correct?
a.
The systems flowchart was created properly.
b.
The arrow between the computer process and the data store should be bidirectional.
c.
The computer process should be shown in the computer column.
d.
The second symbol in the data entry clerk column should be a square.
ANS: C PTS: 1 47.
The following systems flowchart segment depicts a user’s query of a data store to view information on a computer screen. Which statement is correct?
a.
The systems flowchart was created properly.
b.
Only a single direction arrow should connect the data store symbol to the process query symbol.
c.
The query input symbol should be a square.
d.
The query input symbol should be in the computer column.
ANS: B PTS: 1 48.
The following systems flowchart segment depicts a user entering business event data from a source document to update a master file data store. Which statement is correct?
a.
The systems flowchart was created properly.
b.
Only a single disk must be used to represent the master data.
c.
The every day symbol should be connected with a solid line.
d.
The master data is a sequential data store.
ANS: D PTS: 1
49.
System flowchart logic should: a.
flow from left to right
b.
flow top to bottom
c.
flow from bottom to top
d.
a. and b. but minimize crossed lines and connectors
ANS: D PTS: 1 50.
Which of these represent a comprehensive picture of management, operations and information systems? a.
context diagram
b.
logical data flow diagram
c.
physical data flow diagram
d.
systems flowchart
ANS: D PTS: 1
COMPLETION 1.
In a data flow diagram (DFD), a(n) ______________________________ symbol depicts an entity or a process within which incoming data flows are transformed into outgoing data flows.
ANS: bubble PTS: 1 2.
In a data flow diagram (DFD), a(n) ______________________________ symbol represents a pathway for data.
ANS: data flow PTS: 1 3.
In a data flow diagram (DFD) data store symbols are represented by ______________________________.
ANS: two horizontal parallel lines PTS: 1 4.
In a data flow diagram (DFD), a(n) ______________________________ symbol portrays a source or a destination of data outside the system.
ANS: external entity
PTS: 1 5.
A(n) ______________________________ is the toplevel, or least detailed, diagram of a system depicting the system and all its activities as a single bubble and showing the data flows into and out of the system and into and out of the external entities.
ANS: context diagram PTS: 1 6.
Bubbles are labelled with verbs in a ____________ data flow diagram.
ANS: logical PTS: 1 7.
______________________________ are those persons, places, or things outside the system that send data to, or receive data from, the system.
ANS: External entities PTS: 1 8.
A(n) ______________________________ is a person, place, or thing within the system that transforms data.
ANS: internal entity
PTS: 1 9.
A(n) ______________________________ specifies where, how, and by whom a system’s activities are accomplished.
ANS: physical data flow diagram physical data flow diagram (DFD) physical DFD PTS: 1 10.
A(n) ______________________________ shows what activities the system is doing without specifying how, where or by whom the activities are accomplished.
ANS: logical data flow diagram logical data flow diagram (DFD) logical DFD PTS: 1 11.
A(n) ______________________________ data flow diagram (DFD) depicts what activities the system performs rather than how, where, or by whom they are performed.
ANS: logical
PTS: 1 12.
When the context diagram and the level 0 diagram reflect the equivalent external data flows, the two diagrams are said to be ______________________________.
ANS: balanced PTS: 1 13.
The successive subdividing, or exploding, of logical data flow diagrams (DFDs) is called ______________________________.
ANS: topdown partitioning PTS: 1 14.
A(n) ______________________________ gives a complete picture of a system by combining physical and logical aspects of the system.
ANS: systems flowchart PTS: 1 15.
A(n) ______________________________ is any action being performed by an internal or external entity.
ANS: activity
PTS: 1 16.
______________________________ activities include retrieving data from storage, transforming data, or filing data.
ANS: Information processing PTS: 1 17.
Processes that handle otherthannormal situations are called ______________________________ routines or ______________________________ routines.
ANS: exception, error error, exception PTS: 1 18.
A(n) ______________________________ is a data flow that leaves a bubble but does not go to any other bubble or data store.
ANS: reject stub PTS: 1 19.
When we document a(n) ______________________________ system, the central computer will have one data store/disk symbol.
ANS: enterprise PTS: 1 20.
A(n) ______________________________ depicts a system and all of its activities as a single bubble.
ANS: context diagram PTS: 1