8445733
Descripción
Test por Miguel Lucero, actualizado hace más de 1 año
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Creado por Miguel Lucero
hace casi 9 años
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Pregunta 1
Pregunta
1. Systems analysis establishes the need for an information system and its extent
Respuesta
- True
- False
Pregunta 2
Pregunta
2. The term “database development” is used to describe the process of database design and implementation.
Respuesta
- True
- False
Pregunta 3
Pregunta
3. The primary objective in database design is to create complete, normalized, nonredundant, and fully integrated conceptual, logical, and physical database models.
Respuesta
- True
- False
Pregunta 4
Pregunta
4. The implementation phase of database design includes creating the database storage structure and loading the database, but does not provide for data management.
Respuesta
- True
- False
Pregunta 5
Pregunta
5. The Systems Development Life Cycle (SDLC) traces the history of an information system.
Respuesta
- True
- False
Pregunta 6
Pregunta
6. The Systems Development Life Cycle (SDLC) provides the big picture within which the database design and application development can be mapped out and evaluated.
Respuesta
- True
- False
Pregunta 7
Pregunta
7. The Systems Development Life Cycle (SDLC) is a sequential process rather than an iterative process.
Respuesta
- True
- False
Pregunta 8
Pregunta
8. The Systems Development Life Cycle’s (SDLC’s) planning phase yields a general overview of the company and its objectives.
Respuesta
- True
- False
Pregunta 9
Pregunta
9. The result of analysis phase of the Systems Development Life Cycle (SDLC) should be a better understanding of the system’s functional areas, actual and potential problems, and opportunities.
Respuesta
- True
- False
Pregunta 10
Pregunta
10. In the Systems Development Life Cycle (SDLC), problems defined during the planning phase are examined in greater detail during the analysis phase.
Respuesta
- True
- False
Pregunta 11
Pregunta
11. The analysis phase of the Systems Development Life Cycle (SDLC) involves a cycle of coding, testing, and debugging.
Respuesta
- True
- False
Pregunta 12
Pregunta
12. In the Systems Development Life Cycle (SDLC), the design of the system’s processes begins in the detailed systems design phase.
Respuesta
- True
- False
Pregunta 13
Pregunta
13. In the detailed systems design phase of the Systems Development Life Cycle (SDLC), steps are laid out for the conversion of a database from an old system to a new system.
Respuesta
- True
- False
Pregunta 14
Pregunta
14. Training principles and methodologies are planned during the implementation phase of the Systems Development Life Cycle (SDLC).
Respuesta
- True
- False
Pregunta 15
Pregunta
15. The detailed systems design phase of the Systems Development Life Cycle (SDLC) includes all the necessary technical specifications for the screens, menus, reports, and other devices used to make the system more efficient.
Respuesta
- True
- False
Pregunta 16
Pregunta
16. During the implementation phase of the Systems Development Life Cycle (SDLC), the hardware, database management system (DBMS) software, and application programs are installed, and the database design is implemented.
Respuesta
- True
- False
Pregunta 17
Pregunta
17. The database contents might be loaded interactively or in batch mode using a variety of methods and devices including customized user programs.
Respuesta
- True
- False
Pregunta 18
Pregunta
18. The system is subjected to exhaustive testing during the testing phase of the Systems Development Life Cycle (SDLC).
Respuesta
- True
- False
Pregunta 19
Pregunta
19. In the Systems Development Life Cycle (SDLC), after testing is concluded, end-user training is not necessary.
Respuesta
- True
- False
Pregunta 20
Pregunta
20. A system is always at some stage of SDLC because every request for structural changes requires retracing the steps of the Systems Development Life Cycle (SDLC).
Respuesta
- True
- False
Pregunta 21
Pregunta
21. A system maintenance activity generated in response to changes in the business environment is referred to as corrective maintenance.
Respuesta
- True
- False
Pregunta 22
Pregunta
22. The overall purpose of the database initial study is to create the conceptual design.
Respuesta
- True
- False
Pregunta 23
Pregunta
23. To analyze the company situation, the database designer must discover what the company’s operational components are, how they function, and how they interact.
Respuesta
- True
- False
Pregunta 24
Pregunta
24. After the initial declarations in Database Life Cycle (DBLC), the database designer must carefully probe in order to generate additional information that will help define the problem within the larger framework of company operations.
Respuesta
- True
- False
Pregunta 25
Pregunta
25. In most modern relational DBMSs, a new database implementation requires the creation of special storage-related constructs to house the end-user tables.
Respuesta
- True
- False
Pregunta 26
Pregunta
26. The assignment of access rights may restrict operations on predetermined objects such as databases, tables, views, queries, and reports.
Respuesta
- True
- False
Pregunta 27
Pregunta
27. Data integrity is enforced by the database management system (DBMS) through the proper use of primary and foreign key rules.
Respuesta
- True
- False
Pregunta 28
Pregunta
28. The testing and evaluation phase of the Database Life Cycle (DBLC) occurs after applications programming.
Respuesta
- True
- False
Pregunta 29
Pregunta
29. Database performance is one of the least important factors in all database implementations.
Respuesta
- True
- False
Pregunta 30
Pregunta
30. Evaluation of database performance is rendered easier by the fact there are no standards to measure it.
Respuesta
- True
- False
Pregunta 31
Pregunta
31. The main purpose of a backup is to guarantee database restoration following a hardware or software failure.
Respuesta
- True
- False
Pregunta 32
Pregunta
32. The database administrator must be prepared to perform routine maintenance activities within the database.
Respuesta
- True
- False
Pregunta 33
Pregunta
33. Physical design becomes simpler when data is distributed at different locations.
Respuesta
- True
- False
Pregunta 34
Pregunta
34. Decentralized design is typical of relatively simple, small databases and can be successfully done by a single person.
Respuesta
- True
- False
Pregunta 35
Pregunta
35. The process of creating an information system is known as .
Respuesta
-
a. systems development
-
b. database development
-
c. network development
-
d. enterprise development
Pregunta 36
Pregunta
36. The traditional Systems Development Life Cycle (SDLC) is divided into phases.
Respuesta
-
a. two
-
b. three
-
c. four
-
d. five
Pregunta 37
Pregunta
37. Discovery of user requirements, existing system evaluation, and logical system design are part of the phase of the Systems Development Life Cycle (SDLC).
Respuesta
-
a. planning
-
b. analysis
-
c. detailed systems design
-
d. implementation
Pregunta 38
Pregunta
38. Coding, testing, and debugging are part of the phase of the Systems Development Life Cycle (SDLC).
Respuesta
-
a. planning
-
b. analysis
-
c. detailed systems design
-
d. implementation
Pregunta 39
Pregunta
39. “Should the existing system be replaced?” is a question that is asked during the stage of the Systems Development Life Cycle (SDLC).
Respuesta
-
a. planning
-
b. analysis
-
c. implementation
-
d. maintenance
Pregunta 40
Pregunta
40. “What are the requirements of the current system’s end users?” is a question asked during the phase of the Systems Development Life Cycle (SDLC).
Respuesta
-
a. planning
-
b. analysis
-
c. implementation
-
d. maintenance
Pregunta 41
Pregunta
41. The feasibility study during the planning phase of the Systems Development Life Cycle (SDLC) must address the:
Respuesta
-
a. requirements of the current system’s end users.
-
b. problems and constraints related to the company situation.
-
c. questions about modification and replacement of existing system.
-
d. technical aspects of hardware and software requirements.
Pregunta 42
Pregunta
42. The logical systems design is created during the phase of the Systems Development Life Cycle (SDLC).
Respuesta
-
a. planning
-
b. analysis
-
c. implementation
-
d. maintenance
Pregunta 43
Pregunta
43. The database contents are loaded during the phase of the Systems Development Life Cycle (SDLC).
Respuesta
-
a. analysis
-
b. detailed systems design
-
c. implementation
-
d. maintenance
Pregunta 44
Pregunta
44. In DBLC, the phase after the database initial study is .
Respuesta
-
a. operation
-
b. database design
-
c. database initial study
-
d. implementation and loading
Pregunta 45
Pregunta
45. The implementation of applications tends to prolong the operational life of systems by making them easier to update and maintain.
Respuesta
-
a. database-produced
-
b. network-produced
-
c. CASE-produced
-
d. design-produced
Pregunta 46
Pregunta
46. The maintenance and evolution phase of the Database Life Cycle (DBLC) involves .
Respuesta
-
a. defining objectives
-
b. introducing changes
-
c. testing the database
-
d. installing the DBMS
Pregunta 47
Pregunta
47. Selecting database management system (DBMS) software is part of the phase of the Database Life Cycle (DBLC).
Respuesta
-
a. database initial study
-
b. database design
-
c. implementation and loading
-
d. testing and evaluation
Pregunta 48
Pregunta
48. Producing the required information flow is part of the phase of the Database Life Cycle (DBLC).
Respuesta
-
a. database initial study
-
b. database design
-
c. operation
-
d. testing and evaluation
Pregunta 49
Pregunta
49. is a technique that creates logical representations of computing resources that are independent of the underlying physical computing resources.
Respuesta
-
a. Normalization
-
b. Virtualization
-
c. Specialization
-
d. Generalization
Pregunta 50
Pregunta
50. The implementation and loading phase of the Database Life Cycle (DBLC) involves .
Respuesta
-
a. defining objectives
-
b. introducing changes
-
c. testing the database
-
d. installing the DBMS
Pregunta 51
Pregunta
51. In the context of the database design process, the conceptual design step that defines the fragmentation and allocation strategy is .
Respuesta
-
a. Database analysis and requirements
-
b. ER modeling and normalization
-
c. data model verification
-
d. distributed database design
Pregunta 52
Pregunta
52. In the context of the database design process, the conceptual design step that determines end-user views, outputs, and transaction-processing requirements is .
Respuesta
-
a. Data analysis and requirements
-
b. entity relationship modeling and normalization
-
c. data model verification
-
d. distributed data design
Pregunta 53
Pregunta
53. can render data useless to unauthorized users who might have violated some of the database security layers.
Respuesta
-
a. Data encryption
-
b. Access rights
-
c. Physical security
-
d. Password security
Pregunta 54
Pregunta
54. Once the data has been loaded into the database, the tests and fine-tunes the database for performance, integrity, concurrent access, and security constraints.
Respuesta
-
a. programmer
-
b. manager
-
c. database administrator
-
d. systems administrator
Pregunta 55
Pregunta
55. In a(n) , only the objects that have been updated or modified since the last full backup are backed up.
Respuesta
-
a. transaction log backup
-
b. conservative backup
-
c. differential backup
-
d. adaptive backup
Pregunta 56
Pregunta
56. Which of the following is a hardware-induced database failure?
Respuesta
-
a. memory chip errors
-
b. viruses
-
c. malware
-
d. abortion due to deadlock
Pregunta 57
Pregunta
57. The last step in the Database Life Cycle (DBLC) is .
Respuesta
-
a. maintenance and evolution
-
b. operation
-
c. testing and evaluation
-
d. implementation and loading
Pregunta 58
Pregunta
58. The first step in developing the conceptual model using ER diagrams is to .
Respuesta
-
a. normalize the entities
-
b. complete the initial ER diagram
-
c. identify, analyze, and refine the business rules
-
d. define the attributes, primary keys, and foreign keys for each of the entities
Pregunta 59
Pregunta
59. The first step in the ER model verification process is to .
Respuesta
-
a. identify each module and its components
-
b. identify the ER model’s central entity
-
c. verify all processes against the ER model
-
d. identify each module’s internal transaction requirements
Pregunta 60
Pregunta
60. is the process of determining the data storage organization and data access characteristics of the database to ensure its integrity, security, and performance.
Respuesta
-
a. Conceptual design
-
b. Network design
-
c. Logical design
-
d. Physical design
Pregunta 61
Pregunta
61. During decentralized design, after the has been completed, all modules are integrated into one conceptual model.
Respuesta
-
a. declaration process
-
b. verification process
-
c. conceptual process
-
d. logical process
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