Test
Chapter 7
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Preguntas del test (74)
1Which graphically characterize(s) data processes and flows through a business
system?- AA) data dictionary
- BB) data flow diagrams
- CC) structured analysis
- DD) design
2Which is the biggest advantage of the data flow approach over narrative
explanations?- AA) freedom from committing to the technical implementation of the system too
early - BB) further understanding of the interrelatedness of systems and subsystems
- CC) communicating current system knowledge of users through data flow diagrams
- DD) conceptual freedom found in the use of the four symbols
- AA) freedom from committing to the technical implementation of the system too
3Which is not one of the four basic symbols used to chart data movement on
data flow diagrams?- AA) an oval
- BB) arrow
- CC) rectangle with rounded corners
- DD) open-ended rectangle
4What is the middle of the process symbol used for?
- AA) process sequence
- BB) identifying number
- CC) process description
- DD) process implementation
5A primitive process is:
- AA) a process that is not exploded to a child diagram
- BB) the central process on a context level diagram.
- CC) a process that requires two or more data flow into it.
- DD) a process that has only base elements flowing in or out of it.
6Which of the following is not an error when drawing a data flow diagram?
- AA) all data flowing into a process or out of a process
- BB) data flow on a child diagram that has only one end connected to a process, the
other end is a point in space - CC) connecting data stores and external entities directly to each other
- DD) placing more than nine processes on a data flow diagram
7When the data flow in and out of a parent process do not match the data flow
in or out of a child diagram, it is called:- AA) a primitive process.
- BB) a disordered pair
- CC) a logical data flow diagram.
- DD) unbalanced decomposition.
8A logical data flow diagram:
- AA) includes types of programs, such as online or batch.
- BB) is a model of how the system will be implemented.
- CC) does not include any primitive processes.
- DD) is a model of how the business operates.
9Which of the following is not an advantage of using a logical model?
- AA) A system based on a logical model is more stable.
- BB) The logical model helps the analyst understand the business being studied
- CC) It facilitates communication with the users.
- DD) A logical model clarifies which processes are automated.
10Which of the following is not an advantage of using a physical model?
- AA) Transaction data stores are identified.
- BB) It is easier to create compared with the logical model.
- CC) The sequence of processes is identified.
- DD) Controls are included.
11Physical data flow diagrams:
- AA) include processes for adding, updating, changing and deleting records.
- BB) are used to model business events, along with their input and output.
- CC) enable the analyst to better understand the business.
- DD) include no interface data flow in or out of processes.
12Transaction files:
- AA) are used when interface data flow exist on data flow diagrams.
- BB) may be used to link processes that execute at different times.
- CC) are included to store all derived elements.
- DD) are required to implement all on-line processes.
13Which of the following is not a reason for partitioning processes into separate
programs?- AA) the processes represent different user groups
- BB) the processes execute at different times
- CC) to control system security
- DD) to maintain consistency of data
14A CRUD matrix is used to show:
- AA) places in the system where the data is inaccurate.
- BB) where records are updated, added, deleted or used.
- CC) which Web pages are placed on a secure server.
- DD) the partitioning of data flow diagrams in a client/server environment
15In a CRUD matrix, each row represents the data stores used for each:
- AA) process.
- BB) database table.
- CC) data flow child diagram.
- DD) activity.
16The process of creating a simple data flow diagram fragment for each unique
system trigger is called:- AA) event modeling.
- BB) trigger analysis.
- CC) response cases.
- DD) CRUD model analysis
17The advantage of building data flow diagrams based on events is that:
- AA) events are small scale and easy to analyze for input and output.
- BB) users are familiar with the events within their business and know how the
events drive other activities. - CC) events fall into one of four categories: read, update, create, delete.
- DD) events are predictable and lend a high degree of stability to the data flow
diagram.
18A use case:
- AA) summarizes an activity, its trigger, input, and output.
- BB) describes a subsystem of a data flow diagram showing how the processes use
data produced by other processes. - CC) describes how the data is partitioned into programs for different users.
- DD) shows when the data is updated, read, created or deleted.
19Partitioning on a data flow diagram for an ecommerce Web site may be used
to show:- AA) external events.
- BB) triggers.
- CC) security.
- DD) derived elements.
20Which of the following is a goal of dividing a Web site into a series of Web
pages?- AA) improve the ease of maintaining the Web site
- BB) improve the collection of Web metrics
- CC) improve tracking of page movement by the customer
- DD) improve the revenue obtained by page marketing
21What should be created each time data must be obtained from an external
partner?- AA) a transaction data store
- BB) a new browser window and DFD process to validate the window's data
- CC) a unique Web form and DFD process to validate and process the data
- DD) a Web form that extends the previous Web form
22Ajax is used to:
- AA) partition Web sites into different Web forms.
- BB) obtain data from a Web server and update the current Web form.
- CC) confirm credit card accounts using a secure transaction.
- DD) transmit data to an external partner using XML documents.
23Having separate Web forms to collect transaction data means that:
- AA) the forms are each quite complex with complex validation
- BB) the forms are less complex and easier to fill out.
- CC) the processing will take place slowly.
- DD) the Web site will not be as attractive.
24Each time an external company or system is involved:
- AA) the processes that handle each of the interactions should be partitioned into
one program for security reasons. - BB) a new temporary data store must be used with a process to create the data
store. - CC) the process that handles the interaction must be on a secure server.
- DD) the process involved needs to be partitioned into a separate program.
- AA) the processes that handle each of the interactions should be partitioned into
25Which of these are reasons for partitioning a system?
- AA) to keep transactions secure
- BB) to make it easier to move to a new system
- CC) to allow the system to be upgraded later
- DD) to ensure that if the business is sold, the data can be given to the new owners
26A method that provides conceptional freedom for representing processes and
flows in a business system is the ________.- AA) database
- BB) entity-relationship diagram
- CC) data flow diagram
- DD) flow chart
27 ________ depict the broadest possible overview of system inputs, processes,
and outputs.- AA) Data flow diagrams
- BB) Databases
- CC) Entity-relationship diagrams
- DD) Flow charts
28By using combinations of only four symbols, the systems analyst is able to
create a pictorial depiction of data flows that eventually can provide solid system
________.- AA) documentation
- BB) modeling
- CC) programming
- DD) answers
29The data flow approach enables the systems analyst to better understand the
interrelatedness of ________ and ________.- AA) systems; subsystems
- BB) systems; programming
- CC) subsystems; programming
- DD) subsystems; diagrams
30An external entity is called a source or ________ of data, and is considered to
be external to the study.- AA) destination
- BB) result
- CC) answer
- DD) confusion
3131) Data flows occurring simultaneously can be depicted doing just that through
the use of________ arrows.- AA) perpendicular
- BB) segmented
- CC) connecting
- DD) parallel
3232) The data store symbol is simply showing a depository for data which allows
addition or________ of data.- AA) retrieval
- BB) removal
- CC) updating
- DD) deletion
33With a ________ approach, the diagrams move from general to specific.
- AA) top-down
- BB) bottom-up
- CC) management-centered
- DD) employee-centered
34While the first ________ diagram helps the systems analyst grasp basic data
movement, its general nature limits its usefulness.- AA) context
- BB) concept
- CC) user interface
- DD) design
35When the first ________ diagram is made, inputs and outputs are specified
and these remain constant throughout all of the following diagrams.- AA) concept
- BB) user interface
- CC) design
- DD) context
36The data flow diagram graphically characterizes data processes and flows in a
business system.- AVerdadero
- BFalso
37The biggest advantage of the data flow approach lies in the conceptual
freedom found in the use of the four symbols.- AVerdadero
- BFalso
38The data flow diagram may be used to analyze the proposed system.
- AVerdadero
- BFalso
39An arrow is used to depict an external entity that can give and receive data
from the system.- AVerdadero
- BFalso
40Each external entity is labeled with a noun.
- AVerdadero
- BFalso
41A rectangle with rounded corners is used to show the occurrence of a
transforming process.- AVerdadero
- BFalso
42Processes in a rectangle with rounded corners sometimes denote something
other than a change in or transformation of data or a system/subsystem.- AVerdadero
- BFalso
43Processes that transform data should be named with a noun which indicates
the data that has been transformed.- AVerdadero
- BFalso
44In logical data flow diagrams, the type of physical storage is unspecified.
- AVerdadero
- BFalso
45The name of the data flow coming out of a process should be different than
the name of the data flow going into the process.- AVerdadero
- BFalso
46The systems analyst needs to conceptualize data flows from a top-down
perspective.- AVerdadero
- BFalso
47The highest level data flow diagram is called Diagram 0.
- AVerdadero
- BFalso
48With a top-down approach, the diagrams move from specific to general.
- AVerdadero
- BFalso
49More detail is achievable through using a process called "exploding the
diagrams."- AVerdadero
- BFalso
50Data flow diagrams must be drawn working from left to right on the page.
- AVerdadero
- BFalso
51Data stores must always have data flow into them in a proper diagram.
- AVerdadero
- BFalso
52Linear data flow from process to process is normal in higher level data flow
diagrams.- AVerdadero
- BFalso
53Unbalanced decomposition means that the data flow to or from a parent
process does not match the data flow in or out of a child diagram.- AVerdadero
- BFalso
54A logical data flow diagram shows how the business operates.
- AVerdadero
- BFalso
55 A physical data flow diagram shows how the system will be constructed.
- AVerdadero
- BFalso
56 Transaction files are used to link all logical data flow diagram processes.
- AVerdadero
- BFalso
57A CRUD matrix is a tool used to represent where master files are read,
updated, created, and deleted within the system.- AVerdadero
- BFalso
58A use case summarizes an event and defines one activity.
- AVerdadero
- BFalso
59Ajax may be used to obtain data for a Web form without changing Web pages.
- AVerdadero
- BFalso
60Having separate Web forms means that the forms will become more complex.
- AVerdadero
- BFalso
61A clear name on a data flow diagram makes it easier to understand what the
process is accomplishing.- AVerdadero
- BFalso
62A basic process is one that does not explode to a child diagram.
- AVerdadero
- BFalso
63When a process has all input or all output data flow, it means that an
arrowhead is pointing in the wrong direction or there is a missing data flow.- AVerdadero
- BFalso
64Balanced decomposition is when the data flow in or out of a child diagram
does not match the data flow in or out of a parent process.- AVerdadero
- BFalso
65 A logical data flow diagram focuses on how the business operates.
- AVerdadero
- BFalso
66A physical data flow diagram shows how the system will be implemented.
- AVerdadero
- BFalso
67 A transaction file links two processes that execute at different times.
- AVerdadero
- BFalso
68Base elements are elements that need to be keyed into the system.
- AVerdadero
- BFalso
69Partitioning data flow diagrams is the process of deciding which processes are
manual procedures and which processes should be grouped into which computer
programs.- AVerdadero
- BFalso
70Effective labels on data flow diagrams is a top priority.
- AVerdadero
- BFalso
71A CRUD matrix shows where records are added, changed, used, and deleted
from a file.- AVerdadero
- BFalso
72 A use case summarizes an event and defines one activity, its trigger, input and
output.- AVerdadero
- BFalso
73Each time an external company or system is involved in the activities of a Web
site, the process that handles them must be left alone without any partitioning.- AVerdadero
- BFalso
74Ajax is a technique used to obtain data from a server and update large amounts of data using UML.
- AVerdadero
- BFalso
Información
- Descripción
- Quiz CIS 3343 Test sobre Chapter 7, creado por . . el 13/02/2016.
- Autor
- . .
- Idioma
- English
- Visitas
- 63
- Historial
- Creado el 13 feb 2016 · actualizado el 18 ene 2017
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