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CISA Exam-Testing Concept-Decision Support System (DSS) (Domain-3)

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Domain-3

Testing Concept-Decision Support System (DSS)

Hemang Doshi

CISA, ACA, DISA, FIII

Details about this E-Book:

The objective of this e-book is to ensure that CISA candidate get adequate knowledge on concept of ‘Decision Support System (DSS) ’. Concepts have been simplified for easy reference of CISA candidates.

Questions, Answers and Explanation (QAE) on concept are designed in accordance with CISA exam pattern.

What is Decision Support System (DSS)?

 

-DSS is an interactive system which support semi-structured decision making. It collects data from varied sources and provides useful information to managers.

 

Examples of information that a DSS provides:

 

-Comparative sales figures between one week and the next.

-Projected revenue figures based on various assumptions.

-Evaluation of various alternatives on the basis of past experience.

 

Characteristics of DSS:

 

-DSS supports semi-structured or less structured decisions.

-DSS uses techniques with traditional data access and retrieval function.

-DSS is flexible and adoptable in changing environment and decision making approach of the users.

 

Efficiency vs. Effectiveness:

A principle of DSS design is to concentrate less on efficiency (i.e. performing tasks quickly and reducing the costs) and more on effectiveness (i.e. performing the right task).

 

Design & Development:

Prototyping is the most popular approach to DSS design and development.

 

Risk Factors:

Developers should be prepared for eight implementation risk factors:

(1)Non-existent or unwilling users

(2)Multiple users or implementers

(3)Disappearing users, implementers and maintainers

(3)Inability to specify purpose or usage patterns in advance

(4)Inability to predict and cushion impact on all parties

(5)Lack or loss of support

(6)Lack of experience with similar systems

(7)Technical problems and cost effectiveness issues.

 

 

Point to remember for CISA Exam:

 

(1)In any given scenario, DSS supports the semi-structured problem (and not only structured problem).

 

(2)In any given scenario, DSS should be flexible and adoptable to changing requirements and scenarios.

 

(3)In any given scenario, Decision tree is used as a questionnaire to lead a user through a series of choices until a conclusion is reached.

 

 

 

 

 

 

Question, Answer & Explanation:

Below QAE are solely on the concept of Decision Support System. Candidates are advised to attempt below questions multiple times. More emphasis to be given on explanation part for better understanding.

 

Which of the following is a characteristic of decision support system (DSS)?

 

A. DSS allows flexibility in the decision-making approach of users.

B. DSS supports only structured decision-making tasks.

C. DSS is aimed at solving highly structured problems.

D. DSS uses techniques with non-traditional data access and retrieval function.

 

Answer: A. DSS allows flexibility in the decision-making approach of users.

 

Explanation:

Following are the characteristics of DSS:

-DSS supports semi-structured or less structured decisions.

-DSS uses techniques with traditional data access and retrieval function.

-DSS is flexible and adoptable in changing environment and decision making approach of the users.

 

 

(2) Expert system’s knowledge base that uses questionnaires to lead the user through a series of choices before a conclusion is reached is known as:

 

A. diagram trees

B. decision trees.

C. semantic nets.

D. networks trees.

 

Answer: B. decision trees.

 

Explanation:

Decision trees use questionnaires to lead a user through a series of choices until a conclusion is

reached.

 

 

Major risk of implementation of decision support system is:

 

A. Not able to specify purpose and usage requirements.

B. decision making is of Semi-structured dimensions

C. Inability to specify purpose and usage patterns

D. Frequent changes in decision processes

 

Answer: C. Inability to specify purpose and usage patterns

 

Explanation:

The inability to specify purpose and usage patterns is a risk that developers need to anticipate while implementing a decision support system (DSS). Choices A, B and D are not risks, but characteristics of a DSS.

 

 

Questionnaires to lead the user through a series of choices to reach a conclusion are used by:

A. Network trees

B. Decision trees

C. Logic trees

D. Logic algorithms

 

Answer: B. Decision trees

 

Explanation:

Decision trees use questionnaires to lead the user through a series of choices to reach a conclusion.

 

 

(5) A decision support system (DSS):

 

A. concentrates on highly structured problems.

B. supports the requirements of only top management.

C. emphasizes flexibility in the decision making approach of users.

D. fails to survive in changing environment.

 

Answer: C. emphasizes flexibility in the decision making approach of users.

 

Explanation:

DSS emphasizes flexibility in the decision-making approach of users. Following are the characteristics of DSS:

-DSS supports semi-structured or less structured decisions.

-DSS uses techniques with traditional data access and retrieval function.

-DSS is flexible and adoptable in changing environment and decision making approach of the users.

 

 

The Business Information System which provides answers to semi-structured problems used for handling structured problems & for validation of business decisions is:

A. Decision Support System

B. Structured Information System

C. Transaction Processing System

D. Executive Support System

 

Answer: A. Decision Support System

 

Explanation:

The Business Information System used for handling semi-structured problems & for validation of business decisions is the Decision Support System or DSS. TPS address lower level needs while ESS deals with higher level systems which aim more at problem solving & also address strategic concerns. Hence, the correct answer is as in Option A.

 

 

An IS auditor reviewing the decision support system should be MOST concerned with the:

 

A. quality of input data.

B. level of experience and skills contained in the knowledge base.

C. logical access control of the system.

D. processing controls implemented in the system.

 

Answer: B.level of experience and skills contained in the knowledge base.

 

Explanation:

The level of experience or intelligence in the knowledge base is a key concern for the IS auditor,

as decision errors based on a lack of knowledge could have a severe impact on the organization.

Choices A, C and D are not as important as B.

 

Mock Test

 

To attempt mock test on decision support system, please visit below link:

 

[+ http://datainfosec.blogspot.in/2017/03/mock-test-decision-support-system-dss.html?m=1+]

 

 

Other CISA Exam- Study Material

 

Domain 1

 

Steps of Risk Assessment

 

https://www.youtube.com/watch?v=F2j8xhPaFTg

 

https://www.Shakespir.com/books/view/622303

 

Types of Risk

 

https://www.youtube.com/watch?v=FvuvARXcjss

 

 

Compliance & Substantive Testing

https://youtu.be/3-u2mpIZzW8

 

https://www.Shakespir.com/books/view/625599

 

 

Difference between Inherent Risk & Residual Risk

 

https://www.youtube.com/watch?v=72kv6yOpXEI

 

Difference between Vulnerability & Threat

 

https://www.youtube.com/watch?v=6KxEbth2Ziw

 

Audit Charter

 

https://www.youtube.com/watch?v=rbCJ3ceDuso

 

https://www.Shakespir.com/books/view/633923

 

COBIT-5

 

https://youtu.be/WfwjpDdBqr4

 

Internal Controls

 

https://youtu.be/RuX2hLnm3vY

 

Control Self Assessment (CSA)

 

https://youtu.be/cGcMmt-03as

 

https://www.Shakespir.com/books/view/658967

 

Sampling

 

https://youtu.be/Ynif7SqvkvM

 

https://www.Shakespir.com/books/view/661847

 

 

Domain 2

 

Outsourcing Functions

 

https://youtu.be/vQsX6ZQSDXk

 

IT Strategy Committee & IT Steering Committee

 

https://youtu.be/Za9VMrSe094

 

IT Alignment with Business Objectives

 

https://www.youtube.com/watch?v=FEsP2LXSF9U

 

https://www.Shakespir.com/books/view/633047

 

IT Balanced Score Card

 

https://youtu.be/tvNAvAL9ZIg

 

https://www.Shakespir.com/books/view/639816

 

Roles of various functions of IT

 

https://youtu.be/UMDZrfp1W2Q

 

https://www.Shakespir.com/books/view/645822

 

 

 

Domain 3

 

Online Auditing Techniques

 

https://www.youtube.com/watch?v=HmGFIJlLu-4

 

https://www.Shakespir.com/books/view/637926

 

[* Parity-Checksum-CRC*]

 

https://youtu.be/Y14jVvOKqaU

 

https://www.Shakespir.com/books/view/656262

 

Check Digit

 

https://youtu.be/VH2yd3A6bMc

 

https://www.Shakespir.com/books/view/656262

 

PERT-CPM-Gantt Chart-FPA-EVA-Timebox

 

https://youtu.be/zYZYvcr_-3M

 

https://www.Shakespir.com/books/view/666753

 

Testing in SDLC

 

https://www.youtube.com/watch?v=43nFUFzTbBU

 

https://www.Shakespir.com/books/view/687052

 

 

 

Domain 4

 

Recovery Time Objective (RTO) and Recovery Point Objective (RPO)

 

https://youtu.be/2rDusGnW9qw

 

https://www.Shakespir.com/books/view/646456

 

 

Alternate Recovery Site

 

https://youtu.be/jCpcqaazkY4

 

https://www.Shakespir.com/books/view/647476

 

Domain 5

 

Digital Signature

 

https://youtu.be/_N3jisd1Vis

 

https://www.Shakespir.com/books/view/648923

 

Wireless (Wi-Fi)Security

 

https://youtu.be/csbd_V9PknI

 

https://www.Shakespir.com/books/view/651918

 

Firewall Types

 

https://youtu.be/x650kcv6Mfk

 

https://www.Shakespir.com/books/view/654726

 

Firewall Implementation

 

https://youtu.be/lltKNTdjg4Y

 

https://www.Shakespir.com/books/view/654726

 

Logical Access

 

https://www.Shakespir.com/books/view/630325

 

Classification of Information Assets

 

https://youtu.be/z7MwD8_ayCs

 

https://www.Shakespir.com/books/view/669437

 

 

Asymmetric Encryption

 

https://www.Shakespir.com/books/view/674900

 

https://youtu.be/mCM6dyQ_KmQ

 

 

Elements of Public Key Infrastructure

 

https://www.Shakespir.com/books/view/679445

 

https://youtu.be/ZqVciCzS3ng

 

Biometrics

 

https://www.Shakespir.com/books/view/685250

 

https://youtu.be/EmTOytQv4yM

 

 

IDS & IPS

 

https://youtu.be/0J49Ij_l8VU

 

https://www.Shakespir.com/books/view/692601

 

OSI Architecture

 

https://youtu.be/vkjBo2_9aDE

 

https://www.Shakespir.com/books/view/703536

 

Single Sign On

 

https://youtu.be/ITIFz5pyAls

 

https://www.Shakespir.com/books/view/707248

 

 


CISA Exam-Testing Concept-Decision Support System (DSS) (Domain-3)

  • Author: Hemang Doshi
  • Published: 2017-03-05 15:20:09
  • Words: 1149
CISA Exam-Testing Concept-Decision Support System (DSS) (Domain-3) CISA Exam-Testing Concept-Decision Support System (DSS) (Domain-3)