System Requirements Definition
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Questions and Answers

What is the purpose of analyzing verification results?

  • To generate discrepancy reports
  • To identify any nonconforming products
  • To replan and redefine product requirements
  • To evaluate the quality and integrity of verification data (correct)

    • What is a key aspect of the Product Verification Process?

  • Modifying facility procedures
  • Capturing and recording verification results (correct)
  • Generating reports and waivers
  • Conducting verification activities

    • What is done with nonconforming products?

  • Appropriate corrections and reverification are performed (correct)
  • They are retested to meet requirements
  • They are rejected and discarded
  • They are accepted as is

    • Why is it important to identify verification discrepancies?

    <p>To ensure product compliance with requirements</p> Signup and view all the answers

    What is the outcome of analyzing verification results?

    <p>Identification of nonconforming products</p> Signup and view all the answers

    What is involved in the integration of verification products?

    <p>Integration with enabling products and verification environment</p> Signup and view all the answers

    What is the purpose of generating discrepancy reports?

    <p>To document corrective actions</p> Signup and view all the answers

    What is done with waivers for nonconforming products?

    <p>They are accepted</p> Signup and view all the answers

    What is a potential cause of functional conflict in a system?

    <p>All of the above</p> Signup and view all the answers

    What is the primary output of the Requirements Analysis phase?

    <p>Functional architecture and supporting detail</p> Signup and view all the answers

    Which of the following tools is NOT used in Functional Analysis and Allocation?

    <p>SWOT Analysis</p> Signup and view all the answers

    What is the primary purpose of functional analysis?

    <p>To allocate performance requirements to functions</p> Signup and view all the answers

    What is the outcome of the Functional Analysis and Allocation phase?

    <p>A functional architecture</p> Signup and view all the answers

    What is analyzed during the Functional Analysis and Allocation phase?

    <p>Performance, timing, resources, and failure mode effects</p> Signup and view all the answers

    What is the purpose of defining system states and modes?

    <p>To understand system behavior and fault detection</p> Signup and view all the answers

    What is integrated during the Functional Analysis and Allocation phase?

    <p>Functions</p> Signup and view all the answers

    What should be captured in the product verification process?

    <p>Verification results, peer review reports, anomalies, and corrective actions</p> Signup and view all the answers

    What is the purpose of recording verification of work products?

    <p>To record the method of verification, procedures, environments, and outcomes</p> Signup and view all the answers

    What is included in the verification report?

    <p>Recorded test/verification results, version of the specified requirements, version of the product verified, and results of each verification</p> Signup and view all the answers

    Who prepares the Test and Evaluation Master Plan (TEMP)?

    <p>The program office</p> Signup and view all the answers

    What is the purpose of the Test and Evaluation Master Plan (TEMP)?

    <p>To provide operational test planning for inclusion</p> Signup and view all the answers

    Who reviews the Test and Evaluation Master Plan (TEMP)?

    <p>The operational test organization</p> Signup and view all the answers

    What happens after the differences in the Test and Evaluation Master Plan (TEMP) are resolved?

    <p>It is approved at appropriate high levels in the stakeholder organizations</p> Signup and view all the answers

    What is the nature of the approved Test and Evaluation Master Plan (TEMP)?

    <p>It is binding on managers and designers</p> Signup and view all the answers

    What is the purpose of expanding the physical architecture?

    <p>To include enabling products and services for system completion</p> Signup and view all the answers

    What is the primary output of the systems engineering process?

    <p>System and configuration item architectures</p> Signup and view all the answers

    At what stage of system definition do the outputs become increasingly technically detailed?

    <p>As system definition proceeds from concept to detailed design</p> Signup and view all the answers

    What is the System Architecture?

    <p>The entire system including enabling products and services</p> Signup and view all the answers

    What is the purpose of MIL-HDBK-881?

    <p>To provide reference models for weapon systems architectures</p> Signup and view all the answers

    Who develops the levels below the first three in the Work Breakdown Structures?

    <p>The design contractor</p> Signup and view all the answers

    What is a specification in the context of systems engineering?

    <p>A document describing the technical requirements for items</p> Signup and view all the answers

    What is the purpose of a specification in systems engineering?

    <p>To determine if the requirements have been met</p> Signup and view all the answers

    What should a complete system specification contain?

    <p>All mission profiles, operational and maintenance concepts, utilization environments, and constraints</p> Signup and view all the answers

    How should the customer's need be expressed in the system specification?

    <p>In terms of need, not solution</p> Signup and view all the answers

    What should be resolved up front in the system specification?

    <p>Conflicts and inconsistencies</p> Signup and view all the answers

    Why should the system specification be consistent with other requirements?

    <p>To ensure consistency and avoid contradictions</p> Signup and view all the answers

    What is the purpose of having customers in the definition team?

    <p>To ensure the system meets their operational needs</p> Signup and view all the answers

    What is a typical input to the system specification?

    <p>All of the above</p> Signup and view all the answers

    What is the role of integrated teams in system specification?

    <p>To analyze the customer's need and develop the system specification</p> Signup and view all the answers

    Why is it unlikely that developers will receive a well-defined problem from customers?

    <p>The customer's need is not clearly expressed</p> Signup and view all the answers

    Study Notes

    System Requirements

    • A system requirement must be complete, containing all mission profiles, operational and maintenance concepts, utilization environments, and constraints.
    • It must be expressed in terms of need, not solution, addressing the "why" and "what" of the need, not how to do it.
    • It must be consistent with other requirements, and conflicts must be resolved upfront.
    • It must be appropriate for the level of system hierarchy, and not too detailed that it constrains solutions for the current level of design.

    Inputs

    • Typical inputs include customer needs and objectives, missions, environments, key performance parameters (KPPs), technology base, and output requirements from prior application of SEP.
    • Input requirements must be comprehensive and defined for both system products and system processes such as development, manufacturing, verification, deployment, operations, support, training, and disposal.

    Role of Integrated Teams

    • The operator customers have expertise in the operational employment of the product or item being developed.
    • The developers (government and contractor) are not necessarily competent in the operational aspects of the system under development.
    • Teamwork is necessary to understand the problem and to analyze the need.
    • Customers must be part of the definition team.

    Verification and Validation

    • Verification and validation are necessary to determine whether the product meets the requirements.
    • Verification involves evaluating the product to ensure it meets the specified requirements.

    Analyze Product Verification Results and Report

    • As verification activities are completed, the results are collected and analyzed.
    • Any verification discrepancies are identified and reviewed to determine if there is a nonconforming product.
    • Product nonconformance is identified, and appropriate replanning, redefinition of requirements, redesign, implementation/integration, modification, and reverification are performed for resolution.

    Capture Product Verification Work Products

    • Verification work products take many forms and involve many sources of information.
    • The capture and recording of verification results and related data is a very important step in the Product Verification Process.
    • Verification results, peer review reports, anomalies, and any corrective actions taken should be captured.

    Functional Analysis and Allocation

    • Activities include defining system states and modes, defining system functions and external interfaces, defining functional interfaces, allocating performance requirements to functions, and analyzing performance, timing, and resources.
    • The output of the process is the functional architecture.
    • The functional architecture is a simple hierarchical decomposition of the functions with associated performance requirements.

    Test and Evaluation Master Plan (TEMP)

    • The TEMP is a mandatory document prepared by the program office.
    • The operational test organization reviews it and provides the operational test planning for inclusion.
    • The TEMP is then negotiated between the program office and operational test organization and approved at appropriate high levels in the stakeholder organizations.

    Systems Engineering Process Outputs

    • Outputs are dependent on the level of development.
    • They become increasingly technically detailed as system definition proceeds from concept to detailed design.
    • Outputs include the system and configuration item architectures, specifications, and baselines, and the decision database.

    Architectures: System/Configuration Item

    • The System Architecture describes the entire system, including the physical architecture produced through design synthesis and the enabling products and services required for life cycle employment, support, and management.
    • The design contractor will normally develop the levels below the first three reference models for weapon systems architectures.

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    Description

    A comprehensive quiz on system requirements definition, covering mission profiles, operational concepts, and customer needs. Understand the importance of clear and consistent requirements.

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