SYS ENG [M1-M4] [PRELIMS] Flashcards
The process by which the needs and requirements are related to each other is produced through 2 principal processes called ___ and ___.
Elicitation and Elaboration
_________ (2 words) are attributed to the source and are normally gathered via interview or workshop
Elicited elements / Elicitation
Elaboration involves ____, where it entails breaking a higher-level requirement into those lower-level requirements that are explicitly required by it.
Decomposition
Elaboration involves ____, where requirements engineers drawing some inference. The stakeholders did not mention the req’t directly the ______ req’t is necessary part of the system design if one or more directly stated requirements is to be met
– Derivation
– Derived Req’t
(Read only)
Elaboration and Elicitation require req’t engineers to understand the following, which are…
– The Business
– The application domain
– The specific problem
– the needs and constraints of system stakeholders
– Acquisition and project management
– Req’t engineering and systems engineering
– The technologies and engineering involved
Which THREE of the following are NOT lower level activities to identify the needs and requirements of a stakeholder?
– Reverse Engineering
– Surveys or Questionnaires
– Benchmarking Processes
– Structured Workshop
– Interviews
– Market Analysis
– Competitive system Assessment
– Surveys or Questionnaires
– Structured Workshop
– Interviews
Which THREE of the following are NOT a lower level activity to identify the needs and requirements of a stakeholder?
– Technical Documentation Review
– Simulations, Models, and Prototypes
– Brainstorming and Problem-solving Sessions
– Participation in work activities
– Use cases or operational scenarios
– Observation of work studies (time & motion studies)
– Observation of system’s organization and political environment
– Simulations, Models, and Prototypes
– Brainstorming and Problem-solving Sessions
– – Use cases or operational scenarios
A ____ is the result of the formal transformation of one or more needs into an agreed-to obligation from an entity to perform some function or possess some quality (within specified constraints)
Requirement
A type of requirement describing some property, quality, or attribute, that the system must possess, a condition that must be met, or a constraint under which it must operate or be developed.
Non-Functional Req’t
A type of requirement describing something that the system should do or provide
Functional Requirement
Enumerate:
Requirement statements are supported by:
— _____
— _____
— _____
— Performance, verification, and rationale statements supporting each requirement
— Definitions of other systems
— Information about the application
True or False
The requirements in the Business Requirement Specs and Stakeholder Requirements Specs are not as formal as SyRS and they do not have the same structure.
False.
Not as formal but have the same structure
______ is the first and most important phase of the system design and development process
Conceptual System Design
It is the early and high-level life-cycle activity with the potential to establish, commit, and otherwise predertimine the function, form, cost, and development schedule of the desired system (and its products)
Conceptual System Design
True or False
Because the depth, effort, and cost of accomplishing these steps may vary, the process of conceptual system design also varies.
False
The process is applicable to any type of system.
Complex or Simple, large or small
What part of Conceptual System Design where it commences with the identification of a “want” or “desire” based on some real deficiency
Problem Definition and Need Identification
It is important to start by defining the _____ and then defining the need for a specific system capability. To answer why is it needed.
Problem
True or False
A comprehensive statement of the problem should be presented in general quantitative and qualitative terms.
False
A comprehensive statement of the problem should be presented in SPECIFIC quantitative and qualitative terms.
ENOUGH detail to justify progressing to the next step
True or False
Conceptual System Design encourages “Design it Now, Fix it Later” Philosophy
False. As this leads to unnecessary cost and delivery delay
Part of Conceptual System Design Procedure:
Given the identified need for a system, the next stage of system planning and architecting can be initiated called the _____
Program management plan (PMP)
The PMP guides the development of requirements and the preparation of the _______ or _______
— SE Management Plan —- SE Plan
What part of Conceptual System Design Procedure:
— Technical Reqt are determined
— Functional Architecture (hierarchy) is developed - System operational reqts
— Propose alternative techinical concepts
— Perform feasibility analyses of each proposed concepts
— Selecting maintenance and support approach, and so on
System Planning
What part of Conceptual System Design Procedure:
Answers:
– What is required by the system in functional terms
– what functions must the system perform
– what are the primary and secondary fucntions?
– what must this be accomplished?
– how many times or what frequency must this be accomplished
Need identification
What part of Conceptual System Design Procedure:
— Identify various system level design alternatives that could be pursued in response to the need
— evaluate the feasible approaches to find he most desirable in terms of performance, effectiveness, maintenance, sustaining support, and life cycle economic criteria
— recommend a preferred course of action
System Design and Feasibility Analysis
Part of Conceptual System Design Procedure:
Once the need and technical approach have been defined, it is necessary to translate this into some form of ____ or a set of ____
– operational scenario
– operational requirements
What part of Conceptual System Design Procedure:
Answers:
— What are the anticipated types and quantities of equipment, software, personnel, facilities, information, required, and where are they to be located
– How is the system to be utilized and for how long
— what are the expected interoperability requirements
— What is the anticipated environment at each operational site (user location)
System Operational Requirements
What part of Conceptual System Design Procedure:
Defining ___ includes:
– Mission Definition
– Performance and Physical Parameters
– Operational Deployemnt and Distribution
– Operational Requirements
– Effectiveness factors
– Environmental Factors
System Operational requirement
In System Operational requirement,
____ is the identification of the prime and secondary missions of the system.
Asks the questions:
– what the system to accomplish,
– how will the system accomplish the objectives
Misson Definition
In System Operational requirement,
____ is the definition of operating characteristics and functions (size, weight, speed, range, accuracy, flow rate, capacity, transmit, receive, throughput)
Asks the question:
– What are the critical system performance parameters
Performance and Physical Parameters
In System Operational requirement,
___ is the identification of the quantity of equipment, software, personnel, facilities, and the expected geographical location to include transportation and mobility
Asks the questions:
– How much eqpt and software to be distribute? where located? how long?
– when does the system become fully operational?
Operational Deployment and Distribution
In System Operational requirement,
___ is the anticipated time that the system will be in operational use
asks the questions:
– what is the total inventory profile throughput the lifecycle?
– Who will be operating the system and for what period of time?
Operational Life cycle
In System Operational requirement,
____ is the system requirements specified as figures-of-merit (FOMs)
– Cost/System Effectiveness
– Operational Availability
– readiness Rate
Asks the question:
– How are these factors related to mission scenarios
Effectiveness Factors
In System Operational requirement,
_____ is the definition of the environment in which the system is expected to operate (temperature, humidity, etc.)
It also includes a range of values applicable, and should cover all transportation, handling, and storage modes.
Asks the questions:
– How will the system be handled in transit?
– to what will the system be subjected during its operational use, for how long?
Environmental Factor
In System Operational requirement,
____ is the anticipated usage of the system and its elements (operation hours per day, % of operational capacity, operational cycles per month, facility loading, and so on)
Asks the question:
– how is the system to be used by the customer, operator, and operating authority?
Utilization Requirements
In Conceptual System Design Procedure
The prime system elements must be designed in such a way that they can be efficiently and effectively supported through the entire system life cycle, and the ___ and ____ infrastructure must be responsive to this requirement
Maintenance and Support Infrastructure
What part of Conceptual System Design Procedure:
Generally includes the FF items
– Levels of maintenance
– Repair Policies
– Organizational responsibilities
– Maintenance support elements
– Effectiveness Requirement
– Environment
System Maintenance and Support
In System Maintenance and Support,
_____ pertains to the division of functions and tasks for each area where maintenance is to be performed. also includes corrective and preventive maintenance
Levels of maintenance
In System Maintenance and Support,
______ may be responsibility of the customer, producer (supplier), and a third party
In System Maintenance and Support
In System Maintenance and Support,
A _____ may dictate that an item (in failure) is non-repairable, partially repairable, or full repairable.
it must be subsequetly updated as the design progresses and the results of the level of repair and supportability analysis becomes available.
Repair Policies
In System Maintenance and Support,
___ include supply supports, test and support eqpt, personnel and training, transpo and handling,etc.
Maintenance support elements
In System Maintenance and Support,
_____ consist of the effectiveness factors associated with the support capability
Effectiveness Requirements
What part of Conceptual System Design Procedure:
The objective here is to derive the overall performance as to which the system must be designed
Technical Performance Measures
The _____ is a team approach to help ensure that the voice of the customer is reflected in the ultimate design
The Quality Function Deployment (House of Quality) (QFD)
What part of Conceptual System Design Procedure:
______ is the iterative Process of breaking down requirements from the system-level, to the subsystem, and so on to identify input design criterai, constraints for the various elements of the system
Functional Analysis
Functional Analysis can be facilitated through the use of a ______ to structure the system-level functions to its sub-level functional descriptions (functional interfaces)
Functional Flow Block Diagrams (FFBD)
What part of Conceptual System Design Procedure:
At this point, decisions must be made regarding:
– evaluation and selection of appropriate technologies
– “” “” of COTS components
– Subsystem and component packaging schemes
– Possible degrees of automation
– Alternative test and diagnostic routines
– various maintenance and support policies
System Trade-Off Analysis
What part of Conceptual System Design Procedure:
The result from the previous activities in the conceptual design is used to establish the _________ for the system
System Specification
or
Specific “design-to” requirements
What part of Conceptual System Design Procedure:
____ purpose is to formally ad logically cover proposed design from total system standpoint in the most effective and most economical manner through a combined and integrated review effort
Conceptual Design Review
_____ is a one page document that summarizes the fundamental information of a project before it begins
Project Charter
True or False
A project charter is a two page document that summarizes the fundamental information of a project before it begins
False. one page only
The completed project chart is a ___ for the project kick-off
requirement
The ____:
— Clarifies the project objectives and scope
— addresses the needs of stakeholders
— defines roles and responsibilities
Project Charter
True or False
The style and content of a project charter will remain and not change with the industry and org
False. will change pa rin
What Content of a project charter?
______ describe the impact on the business in terms of benefits or savings and how the project is aligned to the company strategy
Business case summary
What Content of a project charter?
___ idetifies what is not working and where the pin point lies
Problem Statement
A _______ should precede any project to justify why the project is being selected
Business case analysis
true or false
a problem statement must be broad and long
False. must be brief and specific.
t or f
a problem statement should not include background information
True
t or f
A problem statement not discuss causes and solutions
true
What Content of a project charter?
____ defines the target for the project and should respond to the problem satement
goal statement
A goal statement often starts with 3 verbs, which are?
Increase… Reduce… Eliminate…
What Content of a project charter?
A ____ is typically composed of a dedicated project leader, team members, directed by a project sponsor
Project team
In a project team,
The _____ is/are responsible for providing direction, communication, facilitation, monitoring, and tracking
project leader
in a project team,
the ___ is/are responsible for executing the project activities to produce the desired outcomes
team members
in a project team,
the ____ facilitate/s the provision of necessary resources and provides support as required for the project’s successful execution
project sponsor
What Content of a project charter?
The ____ defines what is involved in the project and what is not
project scope
which includes dept, locations, customers, products, services, and processes
What Content of a project charter?
The ____ are the elements that identify the need for executing the project. It is needed to evaluate the outcomes of the project definition process and provide feedback as necessary
Customers / or Voice of the customers
What Content of a project charter?
The ____ must be taken into account during the project definition phase
Voice of the customer/business
What Content of a project charter?
___ tracks progress and brings attention to the future progress and results, which allows proj managers to take corrective actions promptly.
Project Metrics
The success of any project is measured by each or both of ______ and _____
Primary metrics
Financial Metrics
What Content of a project charter?
The ____ must be determined so that a project could be managed in terms of sched, cost, and resources.
Often represented by the start and expected completion dates
Project Time frame
T or F
Approximate completion date should remain the same as the project progresses
False. It should be revised overtime
A signature from a ______ to the project charter provides credibility and support to the proposed financial gains
Financial Representative
What Content of a project charter?
Includes approval by letting key stakeholders view and sign the project charter
Project Authorization Section
______is a focused methodology for carefully listening to the VOC then effectively responding to those needs and expectations. it also provides a clear framework to effectively define and convert the VOC into detailed eng specs to produce the systme to fulfill those requirement
Quality Function Deployment
_______ is a causality-driven, holistic approach to describing the interactive relationships between components inside a system as well as influences from the outside the system
Systems Thinking
T or F
Systems thinking is a perspective of understanding systems as collections of parts rather than as wholes
F. the other way around
_____ is a perspective of seeing and understanding systems as wholes rather than as collections of parts.
Systems thinking
_____ is a methodology used to study the behavior of complex systems overtime. it is a modeling approach that combines feedback loops, stocks and flows, and time deays to understand the behavior of systems
System Dynamics
Systems thinking (ST) or Systems dynamics (SD)?
___ provides qualitative framework for understanding how various elements interact within a system
ST
Systems thinking (ST) or Systems dynamics (SD)?
Adds Quantitative dimension, allowing for modeling and simulating systems to predict future behaviors over time
SD
Systems thinking (ST) or Systems dynamics (SD)?
_____ highlights the importance of feedback
ST
Systems thinking (ST) or Systems dynamics (SD)?
Uses feedback loops and delays to show how systems evolve over time.
SD
Systems thinking (ST) or Systems dynamics (SD)?
Provides the context to design policies
ST
Systems thinking (ST) or Systems dynamics (SD)?
helps test design policies through simulation models
sd
5 steps of System Dynamics
– Problem Definition
– Dynamic Hypothesis
– Simulation Model
– Testing
– Policy design
What step in system dynamics
_____ is a stage where the goal is to define the problem youre trying to solve. identify key variables, set a time horizon, and describe systems behavior over time.
Problem Definition
In Dynamic hypothesis, a _____ is created to hypothesize how the system’s elements interact and cause the observed behavior. Developing a mental model of the feedback loops
Causal Loop diagram
The ______ are used to quantify the causal loops relationships and set up a model that can be simulated to observe how the system behaves overtime.
Stock and Flow Diagram
After testing the developed system dynamics, ______ are created and simulated in the model to evaluate their effectiveness. The system is then simulated with it in place to see how they would affect the system’s behavior
Policies / policy design
_____ refers to how key variables in a system change over time. these changes often follow recognizable ____ that provide insights into the system’s underlying structure.
— System behavior
— Patterns
4 common patterns of system behaviors
– exponential growth
– goal seeking behavior
– s shaped growth
– oscillation
A type of system behavior
when an initial quantity of something starts to grow, and the rate of groth increases
Exponential Growth
A type of system behavior
when initial exponential growth is followed by goal seeking behavior, which results in the variable’s levelling off.
S shaped growth
A type of system behavior
when the quantitiy of interest start either above or below a goal level and overtime moves toward the goal.
Goal seeking behavior
A type of system behavior
When the quantity of interest fluctuates around some level
oscillation
_____ help us to understand and communicate the interactions that determine the dynamics of a system
Causal Loop Diagram
True or False
in a causal loop diagram, choose the more negative sense of a variable name.
False. must be positive
______ is a “Snapshot of all relationships that matter”. a visual representation of key variables (factors, issues, processes) and how they are interconnected
Causal Loop Diagrams
in a causal loop diagram,
The ___ between variables are the verbs in the system’s story. These links show how one variable influences another
Links