Exam 2 Questions 151-200
A use case: Select one: a. shows when the data is updated, read, created or deleted. b. summarizes an activity, its trigger, input, and output. c. describes a subsystem of a data flow diagram showing how the processes use data produced by other processes. d. describes how the data is partitioned into programs for different users.
b
An activity diagram shows the flow of information between two or more use cases. Select one: a. True b. False
b
Automated data dictionaries are useful for only printing summary lists of data. Select one: a. True b. False
b
Data stores are used to store: Select one: a. all derived elements and some base elements. b. all base elements and some derived elements. c. all base and derived elements. d. only some base elements and some derived elements (the most critical ones in the system).
c
The agile approach is based on: Select one: a. values. b. principles. c. All of these. d. practices.
c
In order to build decision tables, what does the analyst not need to do? Select one: a. Eliminate inconsistencies. b. Eliminate any impossible situations. c. Simplify the table as much as possible. d. Determine the minimum size of the table.
d
Physical data flow diagrams: Select one: a. enable the analyst to better understand the business. b. include no interface data flow in or out of processes. c. are used to model business events, along with their input and output. d. include processes for adding, updating, changing and deleting records.
d
Which type of class acts as a coordinator when implementing classes? Select one: a. abstract b. interface c. entity d. control
d
A document type definition is used to determine if the XML document content is valid. Select one: a. True b. False
a
A logical data flow diagram focuses on how the business operates. Select one: a. True b. False
a
A risk to the adoption of agile methodologies for organizations is the cost involved in education and training of systems analysts and programmers in the new approach. Select one: a. True b. false
a
Aggregation shows that the whole object is composed of the sum of its parts. Select one: a. True b. False
a
Ajax may be used to obtain data for a Web form without changing Web pages. Select one: a. True b. False
a
An XML schema is a more precise way to define the content of an XML document. Select one: a. True b. False
a
An abstract class cannot be directly instantiated. Select one: a. True b. False
a
Data about data is called metadata. Select one: a. True b. False
a
Elements on a data flow going into or out from a data store: Select one: a. must be contained by the data store. b. must be created by the process linking to the data store. c. must be on a data flow that is input to the process that creates the output that is going to the data store. d. must be base elements.
a
Polymorphism means that the subclass may inherit a parent method but may add to it or modify it. Select one: a. True b. False
a
Systems that require constant updating and technical design are prone to which kind of error? Select one: a. miscommunication b. design c. documentation d. coding
a
The correct determination of a(n) ________ length is important to avoid truncation. Select one: a. element b. database c. zip code d. address
a
The data dictionary may be used to create: Select one: a. All of these. b. reports. c. forms. d. screens.
a
When 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. Select one: a. True b. False
a
When the first ________ diagram is made, inputs and outputs are specified and these remain constant throughout all of the following diagrams. Select one: a. context b. design c. concept d. user interface
a
Each 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. Select one: a. True b. False
b
If communication is unimportant, structured English is a viable alternative for decision analysis. Select one: a. True b. False
b
In inheritance, the original or parent class is known as the derived class. Select one: a. True b. False
b
Making all product release deadlines imminent: Select one: a. actually slows down project development because of numerous avoidable errors. b. pushes a realistic expectation for completion to the fore. c. creates too much programmer stress and should be avoided if at all possible. d. usually results in minimally functional software.
b
Process descriptions may exist on a form or within a ________ repository. Select one: a. data b. CASE tool c. data dictionary d. CASE diagram
b
Signals or synchronous messages occur when a program does not wait for a returning message. Select one: a. True b. False
b
Transaction files are used to link all logical data flow diagram processes. Select one: a. True b. False
b
Unified modeling language (UML) is a language that can be used to exchange data between businesses. Select one: a. True b. False
b
What is not a characteristic of the ideal data dictionary? Select one: a. online b. efficient c. interactive d. evolutionary e. automated
b
When classes are involved in inheritance, another name for a child class is: Select one: a. a superclass. b. a derived class. c. an instantiated class. d. a base class.
b
Which of the following is not a reason for partitioning processes into separate programs? Select one: a. to control system security b. to maintain consistency of data c. the processes execute at different times d. the processes represent different user groups Feedback
b
Which of these are reasons for partitioning a system? Select one: a. to ensure that if the business is sold, the data can be given to the new owners b. to keep transactions secure c. to allow the system to be upgraded later d. to make it easier to move to a new system
b
With a top-down approach, the diagrams move from specific to general. Select one: a. True b. False Feedback
b
________ are created for primitive processes on a data flow diagram. Select one: a. Production specifications b. Process specifications c. Process diagrams d. Process databases
b
A ________ is one that is contained within a larger data structure and consists of further subdivisions. Select one: a. data alias b. transactional record c. structural record d. schema
c
In a decision table, contradictions occur when: Select one: a. an important condition is omitted. b. identical sets of alternatives require the same action. c. rules suggest different actions but satisfy the same conditions. d. when the situation cannot occur because there are two or more conditions that cannot occur at the same time.
c
The first step of prototyping is to estimate the ________ involved for building system modules. Select one: a. time b. programmers c. costs d. skills
c
Which of the following is not an error when drawing a data flow diagram? Select one: a. all data flowing into a process or out of a process b. connecting data stores and external entities directly to each other c. data flow on a child diagram that has only one end connected to a process, the other end is a point in space d. placing more than nine processes on a data flow diagram
c
A ________ is a large collection of information that is larger than a data dictionary. Select one: a. schema b. data element c. data alias d. repository
d
The advantage of building data flow diagrams based on events is that: Select one: a. events fall into one of four categories: read, update, create, delete. b. events are predictable and lend a high degree of stability to the data flow diagram. c. events are small scale and easy to analyze for input and output. d. users are familiar with the events within their business and know how the events drive other activities.
d
When one class is created from another class it is called ________. Select one: a. parenting b. settlement c. dower d. inheritance
d
Which graphically characterize(s) data processes and flows through a business system? Select one: a. design b. data dictionary c. structured analysis d. data flow diagrams
d
________ describe the interactions of two or more things that perform a behavior that is more than any one of the things can do alone. Select one: a. Concept diagrams b. Behavioral diagrams. c. Structural diagrams d. Communication diagrams
d
A use case summarizes an event and defines one activity. Select one: a. True b. False
a
Transient objects do not survive the end of session. Select one: a. True b. False
a
A patched-up prototype is likely to be: Select one: a. standardized. b. controversial. c. inefficient. d. nonworking.
c
