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Free SSCP Exam Braindumps (page: 99)

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PDF with 1074 Questions

Which of the following statements pertaining to software testing approaches is correct?

  1. A bottom-up approach allows interface errors to be detected earlier.
  2. A top-down approach allows errors in critical modules to be detected earlier.
  3. The test plan and results should be retained as part of the system's permanent documentation.
  4. Black box testing is predicated on a close examination of procedural detail.

Answer(s): C

Explanation:

A bottom-up approach to testing begins testing of atomic units, such as programs or modules, and works upwards until a complete system testing has taken place. It allows errors in critical modules to be found early. A top-down approach allows for early detection of interface
errors and raises confidence in the system, as programmers and users actually see a working system. White box testing is predicated on a close examination of procedural detail. Black box testing examines some aspect of the system with little regard for the internal logical structure of the software.


Reference:

Information Systems Audit and Control Association, Certified Information Systems Auditor 2002 review manual, Chapter 6: Business Application System Development, Acquisition, Implementation and Maintenance (page 300).
Top Down Testing: An approach to integration testing where the component at the top of the component hierarchy is tested first, with lower level components being simulated by stubs. Tested components are then used to test lower level components. The process is repeated until the lowest level components have been tested.
Bottom Up Testing: An approach to integration testing where the lowest level components are tested first, then used to facilitate the testing of higher level components. The process is repeated until the component at the top of the hierarchy is tested.
Black Box Testing: Testing based on an analysis of the specification of a piece of software without reference to its internal workings. The goal is to test how well the component conforms to the published requirements for the component.



Which of the following test makes sure the modified or new system includes appropriate access controls and does not introduce any security holes that might compromise other systems?

  1. Recovery testing
  2. Security testing
  3. Stress/volume testing
  4. Interface testing

Answer(s): B

Explanation:

Security testing makes sure the modified or new system includes appropriate access controls and does not introduce any security holes that might compromise other systems.
Recovery testing checks the system's ability to recover after a software or hardware failure.
Stress/volume testing involves testing an application with large quantities of data in order to evaluate performance during peak hours.
Interface testing evaluates the connection of two or more components that pass information from one area to another.


Reference:

Information Systems Audit and Control Association, Certified Information Systems Auditor 2002 review manual, Chapter 6: Business Application System Development, Acquisition, Implementation and Maintenance (page 300).



Which of the following phases of a software development life cycle normally addresses Due Care and Due Diligence?

  1. Implementation
  2. System feasibility
  3. Product design
  4. Software plans and requirements

Answer(s): D

Explanation:

The software plans and requirements phase addresses threats, vulnerabilities, security requirements, reasonable care, due diligence, legal liabilities, cost/benefit analysis, level of protection desired, test plans.
Implementation is incorrect because it deals with Installing security software, running the system, acceptance testing, security software testing, and complete documentation certification and accreditation (where necessary).
System Feasibility is incorrect because it deals with information security policy, standards, legal issues, and the early validation of concepts.
Product design is incorrect because it deals with incorporating security specifications, adjusting test plans and data,
determining access controls, design documentation, evaluating encryption options, and verification.
Sources:
KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, John Wiley & Sons, 2001, Chapter 7: Applications and Systems Development (page 252).
KRUTZ, Ronald & VINES, Russel, The CISSP Prep Guide: Gold Edition, Wiley Publishing Inc., 2003, Chapter 7: Security Life Cycle Components, Figure 7.5 (page 346).



Which of the following phases of a software development life cycle normally incorporates the security specifications, determines access controls, and evaluates encryption options?

  1. Detailed design
  2. Implementation
  3. Product design
  4. Software plans and requirements

Answer(s): C

Explanation:

The Product design phase deals with incorporating security specifications, adjusting test plans and data, determining access controls, design documentation, evaluating encryption options, and verification.
Implementation is incorrect because it deals with Installing security software, running the system, acceptance testing, security software testing, and complete documentation certification and accreditation (where necessary).
Detailed design is incorrect because it deals with information security policy, standards, legal issues, and the early validation of concepts.
software plans and requirements is incorrect because it deals with addressesing threats, vulnerabilities, security requirements, reasonable care, due diligence, legal liabilities, cost/benefit analysis, level of protection desired, test plans.
Sources:
KRUTZ, Ronald L. & VINES, Russel D., The CISSP Prep Guide: Mastering the Ten Domains of Computer Security, John Wiley & Sons, 2001, Chapter 7: Applications and Systems Development (page 252).
KRUTZ, Ronald & VINES, Russel, The CISSP Prep Guide: Gold Edition, Wiley Publishing Inc., 2003, Chapter 7: Security Life Cycle Components, Figure 7.5 (page 346).






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