CPT-264 Systems and Procedures Chapter-6

Which of the following is NOT a true statement regarding data flows? A) A data flow can go directly back to the same process it leaves. B) A fork in a data flow means that exactly the same data go from a common location to two or more different processes, data stores, or sources/sinks. C) A data flow from a data store means retrieve or use. D) A data flow has a noun phrase label. E) A data flow has only one direction of flow between symbols.

A) A data flow can go directly back to the same process it leaves.

The extent to which information contained on one level of a set of nested data-flow diagrams is also included on other levels refers to: A) DFD consistency. B) DFD completeness. C) DFD gap proofing. D) DFD flexibility. E) DFD cohesion.

A) DFD consistency.

Which of the following is true regarding the context diagram? A) The process symbol is labeled "0." B) The context diagram contains two processes. C) Data stores must be shown on the context diagram. D) The internal workings of the system are shown on the context diagram. E) The context diagram organizes the processes in a tree-like structure.

A) The process symbol is labeled "0."

The part of a decision table that lists the actions that result for a given set of conditions is called: A) action stubs. B) condition stubs. C) rule section. D) execution stubs. E) processing stubs.

A) action stubs.

If an input from a source appears on a level-0 diagram, it must: A) appear on the context diagram. B) be connected to a data flow. C) be connected to a sink. D) be connected to a data store. E) be connected to two entities.

A) appear on the context diagram.

The diagram that shows the scope of the system, indicating what elements are inside and outside the system, is called a: A) context diagram. B) level-2 diagram. C) referencing diagram. D) representative diagram. E) decomposition diagram.

A) context diagram.

On a data-flow diagram, a rectangle with the right vertical line missing represents a: A) data store. B) data flow. C) process. D) source. E) relationship.

A) data store.

By placing a data store between two processes, this: A) decouples the processes. B) enables store and forward capabilities. C) enhances the flow of data between the processes. D) structures the processes. E) disintegrates the processes.

A) decouples the processes.

A black hole is a process that: A) has only inputs. B) has only outputs. C) has not been exploded to show enough detail. D) has insufficient inputs to produce the associated processes. E) generates output directly to a sink

A) has only inputs.

Since data-flow diagrams concentrate on the movement of data between processes, these diagrams are often referred to as: A) process models. B) data models. C) flow models. D) flow charts. E) logic models.

A) process models.

Recording a customer's payment would be represented on a data-flow diagram as a(n): A) process. B) source. C) data flow. D) data store. E) action stub.

A) process.

The origin and/or destination of data, sometimes referred to as external entities defines: A) source. B) data store. C) data flow. D) process. E) predecessor.

A) source.

The extent to which all necessary components of a data-flow diagram have been included and fully described defines: A) DFD consistency. B) DFD completeness. C) DFD gap proofing. D) DFD flexibility. E) DFD cohesion.

B) DFD completeness.

The conservation of inputs and outputs to a data-flow diagram process when that process is decomposed to a lower level defines: A) decomposition. B) balancing. C) flow conservation. D) data flow structuring. E) gap proofing.

B) balancing.

An arrow on a data-flow diagram represents a(n): A) data store. B) data flow. C) process. D) source. E) action sequence.

B) data flow.

Data contained on a customer order form would be represented on a data-flow diagram as a: A) process. B) data flow. C) source. D) sink. E) relationship.

B) data flow.

Student data contained on an enrollment form would be represented on a data-flow diagram as a: A) process. B) data flow. C) source. D) data store. E) relationship.

B) data flow.

Data at rest, which may take the form of many different physical representations, best describes a: A) source. B) data store. C) data flow. D) process. E) relationship.

B) data store.

Techniques used for modeling system logic include: A) flow charts. B) decision tables. C) data-flow diagrams. D) dialogue charts. E) entity relationship diagrams

B) decision tables.

A miracle process is one that: A) has only inputs. B) has only outputs. C) cannot be exploded further. D) has insufficient inputs to produce the associated processes. E) is connected directly to a source.

B) has only outputs.

Data-flow diagrams allow you to: A) show the timing of data flows. B) model how data flow through an information system. C) demonstrate the sequencing of activities. D) show the relationship among entities. E) represent the internal structure and functionality of processes.

B) model how data flow through an information system.

On a data-flow diagram, a rectangle with rounded corners represents a(n): A) data store. B) process. C) action stub. D) data flow. E) source.

B) process.

The part of a decision table that links conditions to actions is the section that contains the: A) action statements. B) rules. C) condition statements. D) decision stubs. E) relationship stubs.

B) rules.

A supplier of auto parts to your company would be represented on a data-flow diagram as a: A) process. B) source. C) data flow. D) data store. E) relationship.

B) source.

Having a level-1 diagram with no level-0 diagram is an example of a: A) violation of completeness. B) violation of consistency. C) balancing error. D) structuring violation. E) cohesion error.

B) violation of consistency.

Which of the following is a true statement regarding a data store? A) Data can move directly from one data store to another data store. B) Data stores illustrate relationships among entities. C) A data store has a noun phrase label. D) Data can move from an outside source to a data store. E) A data store shows data in motion.

C) A data store has a noun phrase label.

If a data flow appears on the context diagram and is also represented on a level-0 diagram, this would be referred to as: A) leveling. B) flow conservation. C) balancing. D) cohesion. E) coupling.

C) balancing.

If two processes are connected by a data flow, they are said to: A) exhibit cohesion. B) share the same data. C) be coupled to each other. D) be strapped to each other. E) be intertwined.

C) be coupled to each other.

If your DFD contains data flows that do not lead anywhere, it is not: A) gap proof. B) a primitive diagram. C) complete. D) consistent. E) balanced.

C) complete.

A computer-based file containing employee information would be represented on a data-flow diagram as a(n): A) data flow. B) source. C) data store. D) process. E) action stub.

C) data store.

The act of going from a single system to several component processes refers to: A) structuring. B) balancing. C) decomposition. D) formatting. E) regeneration.

C) decomposition.

A data-flow diagram that represents a system's major processes, data flows, and data stores at a high level of detail refers to a: A) context diagram. B) level-1 diagram. C) level-0 diagram. D) level-00 diagram. E) logic diagram.

C) level-0 diagram.

When you believe that you have shown each business form or transaction, computer screen, and report as a single data flow, you have probably reached the: A) level-0 diagrams. B) ternary level diagrams. C) primitive data-flow diagrams. D) secondary-level diagrams. E) context level diagrams.

C) primitive data-flow diagrams.

Graphically representing the processes that capture, manipulate, store, and distribute data between a system and its environment and among components within a system refers to: A) data modeling. B) structure modeling. C) process modeling. D) transition modeling. E) logic modeling.

C) process modeling.

Which of the following is NOT a process modeling deliverable? A) A context data-flow diagram B) Thorough descriptions of each DFD component C) DFDs of the current physical system D) An entity relationship diagram E) DFDs of the new logical system

D) An entity relationship diagram

Data in motion, moving from one place in a system to another, best describes a: A) data store. B) process. C) source. D) data flow. E) relationship.

D) data flow.

A file folder containing orders would be represented on a data-flow diagram as a: A) process. B) source. C) data flow. D) data store. E) relationship.

D) data store.

The process of discovering discrepancies between two or more sets of data-flow diagrams or discrepancies within a single DFD is referred to as: A) requirements structuring. B) logic modeling. C) DFD validation. D) gap analysis. E) DFD stress testing.

D) gap analysis.

The lowest level of DFDs are: A) level-0 diagrams. B) context diagrams. C) level-1 diagrams. D) primitive data-flow diagrams. E) systematic diagrams.

D) primitive data-flow diagrams.

A DFD that is a result of three nested decompositions of a series of subprocesses from a process on a level-0 diagram describes a: A) level-3 diagram. B) level-1 diagram. C) level-2 diagram. D) primitive diagram. E) context diagram.

D) primitive diagram.

The lowest level of decomposition for a data-flow diagram is called the: A) context diagram. B) level-0 diagram. C) level-1 diagram. D) primitive diagram. E) cohesive diagram.

D) primitive diagram.

The calculation of an employee's salary would be represented on a data-flow diagram as a(n): A) data flow. B) source. C) data store. D) process. E) action stub.

D) process.

The work or actions performed on data so that they are transformed, stored, or distributed defines: A) source. B) data store. C) data flow. D) process. E) action stub.

D) process.

Which of the following is a true statement regarding data flows? A) A data flow to a data store means retrieve or use. B) A data flow from a data store means update. C) A data flow may have double-ended arrows. D) A data flow represents data at rest. E) A join in a data flow means that exactly the same data come from any of two or more different processes, data stores, or sources/sinks to a common location.

E) A join in a data flow means that exactly the same data come from any of two or more different processes, data stores, or sources/sinks to a common location.

Which of the following is most likely a source/sink for a manufacturing system? A) A customer B) A supplier C) Another information system D) A bank E) All of the above

E) All of the above

Which of the following is a true statement regarding sources/sinks? A) Data must originate outside a system from one or more sources. B) The system must produce information to one or more sinks. C) Sources/sinks are always outside the information system and define the boundaries of the system. D) If any processing takes place inside the source/sink, we are not interested in it. E) All of the above are true statements

E) All of the above are true statements

Which of the following would be considered when diagramming? A) The interactions occurring between sources and sinks B) How to provide sources and sinks direct access to stored data C) How to control or redesign a source or sink D) What a source or sink does with information or how it operates E) None of the above

E) None of the above

On a data-flow diagram, you may: A) repeat data stores and processes. B) repeat sources/sinks and processes. C) only repeat processes. D) repeat relationships. E) repeat both data stores and sources/sinks.

E) repeat both data stores and sources/sinks.

A square on a data-flow diagram represents a: A) data flow. B) data store. C) process. D) predecessor. E) source.

E) source.