Chat with us, powered by LiveChat System questions | Writedemy

System questions

System questions

Question

1

Question:Changing over from the old information system to a new one by turning off the old system as the new one is turned on best describes
A Phased installation
B Single location installation
C Parallel installation
D Direct installation
E Rotation installation

2

Question:On a data-flow diagram, a diamond represents a process.
A True
B False

3

Question:When designing the navigation procedures within your system, the primary concerns are
A The design of between-field navigation and the ability to provide feedback
B Grouping data fields into logical categories and assigning group labels
C Flexibility and consistency
D Formatting and meaningful labels
E Spacing and color differences

4

Question:Functional decomposition is a repetitive process of breaking the description or perspective of a system down into finer and finer detail.
A True
B False

5

Question:A ternary relationship is the equivalent of three binary relationships.
A True
B False

6

Question:In a file-oriented information system, a security file ____.
A Stores relatively permanent data about an entity
B Is created and saved for backup and recovery purposes
C Stores records that contain day-to-day business and operational data
D Is a temporary file created by an information system for a single task

7

Question:Which of the following types of maintenance accounts for as much as 70 percent of all maintenance activity?
A Preventive maintenance
B Corrective maintenance
C Adaptive maintenance
D Perfective maintenance
E Internal maintenance

8

Question:In a typical file processing environment, ____ problems can occur if updates are not applied in every file.
A Rigid data structure
B Data integrity
C Referential integrity
D Data redundancy

9

Question:The ease with which software can be understood, corrected, adapted, and enhanced best describes
A Maintenance
B Maintainability
C Adaptability
D Comfort level
E Installation

10

Question:Which of the following influences most of the costs associated with maintaining a system?
A Maintenance personnel
B Documentation quality
C Number of latent defects
D Number of customers
E Tools

11

Question:____ describe what objects need to know about each other, how objects respond to changes in other objects, and the effects of membership in classes, superclasses, and subclasses.
A Aggregates
B Relationships
C Clusters
D Linkages

12 Not certain of answer

Question:The dependence of nonprimary key attributes on other nonprimary key attributes best describes a
A Relationship dependency
B Transitive dependency
C Weak attribute
D Weak entity
E Weak relationship

13

Question:A primary key should be null.
A True
B False

14

Question:A relationship between object classes best defines
A Encapsulation
B Scope
C Association
D Composition
E Integration

15 Your browser does not support inline frames or is currently configured not to display inline frames.

Question:Data-flow diagramming is one of several structured analysis techniques used to increase software development productivity.
A True
B False

16

Question:Referential integrity specifies that the value of an attribute of one relation depends on the existence of the same attribute in another relation.
A True
B False

17

Question:Which of the following functional capabilities are required for providing smooth and easy navigation within a form?
A Cursor-control capabilities
B Editing capabilities
C Exit capabilities
D Help capabilities
E All of the above

18

Question:During an inspection test, exactly what the code does is investigated.
A True
B False

19

Question:A relationship between the instances of one entity type is a
A Unary relationship
B Binary relationship
C Ternary relationship
D Singular occurrence
E Partnership occurrence

20

Question:When two relations, A and B, have a many-to-many relationship, we create a separate relation, C, to represent this.
A True
B False

21

Question:A relation is said to be in second normal form if the primary key consists of only one attribute.
A True
B False

22

Question:Where possible, text should appear in all uppercase on forms.
A True
B False

23

Question:Which of the following encompasses an object’s properties and the values those properties have?
A Behavior
B Class
C State
D Encapsulation
E Incorporation

24

Question:Which of the following represents how an object acts and reacts?
A Behavior
B Class
C State
D Encapsulation
E Environment

25

Question:Which of the following provides an external interface to a class?
A Constructor
B Operation
C View
D Association
E Source

26

Question:During beta testing, users test a completed information system using real data in the real user environment.
A True
B False

27

Question:Which of the following is a true statement?
A The goal of conceptual data modeling is to capture as much of the meaning of data as is possible
B The efficiencies gained by maintaining systems at the rule rather than code level drastically reduce cost
C If a thorough repository of data descriptions is kept, the system can be regenerated as the business rules change
D The more details about data that we can model, the better the system we can design and build
E All of the above are true statements

28

Question:Changes made to a system to fix or enhance its functionality best defines
A Maintenance
B Support
C Repair
D Installation
E Coding

29

Question:When each nonprimary key attribute is identified by the whole key, the relation is said to be in at least
A Second normal form
B Third normal form
C Fourth normal form
D Fifth normal form
E A relational form

30

Question:The most complete acceptance testing will include
A Alpha testing, beta testing, and a walkthrough
B Beta testing, stub testing, and unit testing
C Desk checking, a system audit, and integration testing
D A system audit, system testing, and integration testing
E Alpha testing, beta testing, and a system audit

31

Question:During physical design, you consider
A The definitions of each attribute
B The descriptions of where and when data are entered, retrieved, deleted, and updated
C The expectations for response time and data integrity
D The descriptions of the file and database technologies to be used
E All of the above

32

Question:A context diagram shows the scope of the organizational system, system boundaries, external entities that interact with the system, and the major information flows between entities and the system.
A True
B False

33

Question:An object is an entity that has a well-defined role in the application domain, and has state, behavior, and identity.
A True
B False

34

Question:An association between the instances of one or more entity types that is of interest to the organization best defines
A Occurrence
B Relationship
C Natural connection
D Cardinality
E Entity link

35

Question:Highlighting methods should be consistently selected and used based upon the level of importance of the emphasized information.
A True
B False

36

Question:Use cases show the static structure of data and the operations that act on data.
A True
B False

37

Question:____ is the transfer of information systems development, operation, or maintenance to an outside firm that provides these services, for a fee, on a temporary or long-term basis.
A Outsourcing
B Commission
C Subscription
D External provision

38

Question:A(n) ____ is a user interface that allows users to interact with graphical objects and pointing devices.
A HCI
B PCI
C UI
D GUI

39

Question:An identifier is a candidate key that has been selected as the unique, identifying characteristic for an entity type.
A True
B False

40

Question:Transitive attributes are attributes that determine other attributes.
A True
B False

41

Question:Combining all normalized user views into one consolidated logical database model refers to
A Normalization
B Requirements structuring
C File integration
D View integration
E Logic modeling

42

Question:A functional dependency between two (or more) nonkey attributes in a relation defines a
A Weak dependency
B Partial dependency
C Simple dependency
D Transitive dependency
E Recursive dependency

43

Question:The purpose of acceptance testing is to
A Determine if new requirements must be added to the newly completed system
B Determine if the system meets user requirements
C Determine if the system meets its objectives
D Test a completed information system using simulated data
E Test a completed information system using real data

44

Question:A candidate key that has been selected as the unique, identifying characteristic for an entity type is called a(n)
A Attribute
B Identifier
C Secondary key
D Gerund
E Index

45

Question:On a use-case diagram, a linking relationship arises when one use case references another use case.
A True
B False

46

Question:An arrow on a data-flow diagram represents a(n)
A Data store
B Data flow
C Process
D Source
E Action sequence

47

Question:Which of the following is not a rule for structuring data entry fields?
A Never require data that is already online or that can be computed
B Always provide default values when appropriate
C Data entries should not be justified
D Always place a caption adjacent to fields
E Provide context-sensitive help when appropriate

48

Question:One problem in a file processing environment is ____, which means that data common to two or more information systems is stored in several places.
A Rigid data structure
B Data integrity
C Referential integrity
D Data redundancy

49

Question:An object has certain ____, like the make, model, and color of a car.
A Keys
B Attributes
C Indices
D Packets

50

Question:A use case is a complete sequence of related actions initiated by an actor; it represents a specific way to use the system.
A True
B False

51

Question:During stress testing, the analysts try to determine how the system performs on the range of possible environments on which it may be used.
A True
B False

52

Question:In all cases, a network must use a ____, which is a set of standards that govern network data transmission.
A Protocol
B Hub
C Switch
D Router

53

Question: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

54

Question:The primary deliverable for the conceptual data-modeling step within the analysis phase is an entity-relationship diagram.
A True
B False

55

Question:When displaying textual information, use abbreviations and acronyms as often as possible.
A True
B False

56

Question:In the accompanying figure, a ____ is a field or combination of fields that uniquely and minimally identifies a particular member of an entity.
A Primary key
B Common key
C Secondary key
D Combination key

57

Question:In a ____, a single communication path connects the network server, departmental servers, workstations, and peripheral devices.
A Hierarchical network
B Star network
C Bus network
D Ring network

58

Question:____ is a widely used method of visualizing and documenting an information system.
A UML
B Java
C UNIX
D DFD

59

stion:A data ____, which is a framework for organizing and storing data, consists of one or more files or tables.
A Structure
B Roster
C Index
D Integral

60

Question:A use case participates in relationships with actors, not other use cases.
A True
B False

61

Question:Which of the following is a true statement?
A Data entities correspond to sources/sinks on a data flow diagram
B Relationships correspond to data flows on a data flow diagram
C A data entity will have many possible instances
D Verbs are used to name entity types
E An entity type is described many times in the data model

62

Question:A single occurrence of an entity type defines
A Entity instance
B Entity appearance
C Attribute
D Data element
E Multivalued attribute

Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.

Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.

Do you need an answer to this or any other questions?

About Writedemy

We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.

How It Works

To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.

Are there Discounts?

All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.

Hire a tutor today CLICK HERE to make your first order