ASH

Related to the Certification Context for Airborne Software, mark the three correct statements between the following (choose 3): DO-178B specifically covers the Software aspects related to certification. ARP4761 specifically deals with the Safety Assessment process related to Software items. Specific detailed coverage of complex HW aspects of design is dealt with within RTCA DO-254. ARP4761 specifically deals with the Safety Assessment process related to the Software and Hardware items. ARP4761 addresses the total life cycle for systems that implement aircraft-level functions.

Related to the DO-178B Software Planning Process, mark the correct statement (choose1): The main objective of the Plan for Software Aspects of Certification (PSAC) is to communicate the Software Project Schedule to the Certification Authority. The verification, mainly through reviews, of the Software Development Plan (SDP), the Software Verification Plan (SVP), the Software Configuration Management Plan (SCMP) and the Software Quality Assurance Plan (SQAP) is not specifically required by the DO-178B. The Software Requirements Standard/s, the Software Design Standard/s and the Software Coding Standard/s shall be declared within the Software Development Plan (SDP) and shall be approved by the Certification Authority. The proposed means of compliance of every DO-178B objective have to be declared in thePlan for Software Aspect of Certification (PSAC). The main objective of the Plan for Software Aspects of Certification (PSAC) is to communicate the proposed development methods to the Certification Authority. Software Development Plan (SDP) defines the SW Life Cycle and the SW Development Environment.

Related to the DO-178B Software Development Processes, mark the two correct statements between the following (choose 2): The verification of the established Software Architecture within the Software Design Process is not required. During the Integration Process the Executable Object Code is generated from the Design Description in parallel with the generation of the Source Code. During the Integration Process, the Executable Object Code should be generated from the Source Code and, once generated, loaded into the target computer. During SW Requirements Process the SW Requirements Analysis Standard (identified in the SDP) is applied and the SW Requirements Document is generated. Software Development Process comprises 4 sub-processes: SW Requirements Process, SWDesign Process, SW Coding Process and Integration Process. Software Design Process: The objectives are to establish the SW Architecture and the SW low-level requirements from the SW high-level requirements and to define the derived low-level requirements. SW Coding Process: The objective of the SW Coding Process is the development of the Source Code, that should be traceable, verifiable, consistent and it should correctly implements the low-level requirements. Integration Process: The objective of the Integration Process is the loading of the Executable Object Code into the target HW for HW/SW integration.

Related to the DO-178B Software Integral Processes, mark the correct statement (choose1): Software Quality Assurance Process establishes that the Software Conformity Review is an optional final review not required as part of a certification application. The Software Accomplishment Summary (SAS) document shall contain the declaration of the achieved degree of DO-178B objectives compliance of the Software product. The Software Configuration Management Process establishes the baselines have to be identified related to Data of Control Category 2. Ensure the correctness, control and confidence of the SW life cycle and their outputs and comprise the Verification, Configuration Management, Quality Assurance and Certification Liaision processes. Are performed concurrently with the SW Development processes.

Tick the correct definition of Simple Electronic Hardware: A hardware device that can be certified by application of DO-178B. A hardware device such that a comprehensive combination of deterministic tests and analyses appropriate to the DAL/IDAL can ensure its correct functional performance under all foreseeable operating conditions with no anomalous behaviour.

The standard that specifies Environmental Conditions and Test Procedures for Airborne Equipment is: DO-254. ARP4754. DO-160D. DO-160B.

The DO-254 was written by: Certification Airworthiness Authorities. A/C (aircraft) manufacturers. EUROCAE, RTCA, Certification Authority, A/C manufacturers, Electronics suppliers and SW people, with DO-178B experience. Certification Authorities, A/C manufacturers and electronic suppliers, joined with SW people.

The requirements specification Activity is in charge of?. Review requirements. Produce a formal software requirements document from the set of software requirements. Review requirements with stakeholder feedback. SW Quality Assurance and compliance with standards. Producing a formal document from the set of software requirements to give visibility of the requirements to the system/test engineers and to allow the formal verification of the requirements specification.

Related to Board Support Packages (BSP) for embedded systems, mark the incorrect statement (choose 1): A Board Support Package (BSP) provides a standardized interface between the hardware and the operating system. Having Board Support Packages (BSP) allows the application SW to be ported to different architectures. Board Support Package (BSP) provides a standarized interface between the hardware and the operating system.

What is the leading paradigm of federated architectures (choose 1): Limit weight of systems. Maximize Fault-tolerance. One function, one system. Partitioned systems are mandatory. One function, one computer (3 if FT with TMR). One function, one system.

Mark disadvantages of federated architectures: Not fault-tolerant. Problems with spare parts logistic. Increased power consumption. Each box has a specific function, with specifically developed hardware and software. Data is not shared among various systems. Significant maintenance costs. Increased weight and power consumption. Difficult to implement.

Considering an Integrated Modular Avionics (IMA) based architecture comprised of 3 partitions with the following temporal requirements: ● Partition 1 : Duration = 10 ms , Period = 25 ms ● Partition 2 : Duration = 10 ms , Period = 25 ms ● Partition 3 : Duration = 5 ms , Period = 75 ms which two of the following sentences are correct (choose 2): The Major Frame is 100 ms and the Minor Frame is 25 ms. The Major Frame is 75 ms and the Minor Frame is 25 ms. Partition 3 is executed once every three Minor Frames.

Mark advantages of integrated architectures: Not fault-tolerant. Sensor data shared among several systems. Reduced weight and power consumption. Easy maintenance.

The DO-254 hardware design processes generate the design data and resultant hardware item. These processes are: Validation, verification, configuration management, process assurance and certification liaison. Requirements capture, conceptual design, detailed design, implementation and production transition.

The DO-254 hardware supporting processes generate the design data and resultant hardware item. These processes are: Validation, verification, configuration management, process assurance and certification liaison. Requirements capture, conceptual design, detailed design, implementation and production transition.

Tick the right statements: The planning and supporting processes run sequentially and the development process is continued throughout the project. The planning and supporting processes run in parallel and the development process is continued throughout the project. The supporting and development processes run sequentially and the process is continued throughout the project. The planning and development processes run sequentially and the supporting process is continued throughout the project.

A Derived Requirement is an Additional requirement resulting from the hardware design processes, which may not be directly traceable to higher level requirements. Select the options that refer to derived requirements: At each phase of the development activity, decisions made as to how particular requirements or groups of requirements are to be met. The consequences of these design choices become requirements for the next phase of the development. Low Level Requirements.

The conceptual design process produces a high-level design concept that may be assessed to determine the potential for the resulting design implementation to meet the requirements. This may be accomplished using such items as, select all that apply: functional block diagrams,. design and architecture descriptions,. Circuit card assembly outlines. Chassis sketches.

DO-254 Validation and Verification. Tick the right statements: The verification process provides assurance that the hardware item requirements are correct and complete with respect to system requirements allocated to the hardware item. The validation process provides assurance that the hardware item implementation meets the requirements. Validation provides assurance that the requirements are correct and complete. Verification provides assurance that the implementation meets the requirements.

DO-254 Verification. Tick the verification activities below: Evidence is provided that the hardware implementation meets the requirements. Omissions and errors are fed back to the appropriate processes for resolution. Traceability is established between hardware requirements, the implementation, and the verification procedures and results. Acceptance tests are identified, can be implemented and are consistent with the hardware design assurance levels of the hardware functions.

DO-254 Tool Classification. Identify the Tools that must be assessed as required by D0-254: Planning tool. Design tool. Verification tool.

DO-254 Submittals. Identify DO-254 submittals among the options below: HAS: The Hardware Accomplishment Summary is the primary data item for showing compliance to the PHAC and demonstrating to the certification authority that the objectives of this document have been achieved for the hardware items. Box Drawing. Top Level Drawing. Hardware Verification Plan.

Identify the tool DO-254 assessment considerations and activities that make that tool qualification is not necessary: The Tool Output is Independently Assessed. The Tool is a Level A or B Design Tool. The Tool has a Relevant History. The Tool is NOT a Level A, B or C Design Tool. The Tool is NOT a Level A or B Verification Tool.

Related to UML modeling language, the graphical diagram used to represent workflows of stepwise activities and actions with support for choice, iteration and concurrency is: The Structure Diagram. The Object Diagram. Activity Diagram.

Related to UML modeling language, choose the right answers: Activity diagram diagram can show the different states of an entity also how an entity responds to various events by changing from one state to another. Sequence diagram shows how elements operate with one another and in what order. It shows object interactions arranged in time sequence (messages exchanged). Activity diagrams - graphical representations of workflows of stepwise activities and actions with support for choice, iteration and concurrency. State Machine diagrams can show the different states of an entity also how an entity responds to various events by changing from one state to another.

Following image corresponds to: FALTA FOTO. An State Machine diagram. An Activity diagram.

An State Machine diagram is: An Interaction diagram. An Behaviour diagram.

Following image corresponds to: FALTA FOTO. An State Machine diagram. A Behaviour diagram.

What is the degree of Structural Coverage required for a Level A SW?. Condition/Decision Coverage. Statement Coverage. Modified Condition Decision Coverage (MC/DC). Statement, Condition/Decision and Modified Condition Decision Coverage (MC/DC).

What is the main way to drive Reviews?. Testing. Inspections. Checklists. Peer review, Inspections and Proof Readings (w/ Checklists).

What kind of Testing is such in which several individual SW Units are assembled into working subsystems?. SW/HW Integration Testing. SW/SW or SW IntegrationTesting.

What is a Test Case?. A Test Case is a software tool used for testing. A Test Case is a specific result of a test. A Test Case is a set of conditions or variables under which a tester will determine whether a system under test satisfies requirements or works correctly. A Test Case is a document, which has a set of test data, preconditions, expected results and post conditions, developed for a particular test scenario in order to verify compliance against a specific requirement.

What is a Test Procedure?. A Test Procedure is a specification of test cases that will be used to verify the functional requirements of a system module or software component. A Test Procedure is a test plan. Test procedures are the physical actions the tester must perform to simulate the inputs and record the outputs.

What is a Problem Report (PR)?. A PR is a mean to identify and record defects in the functional requirements, ICD and software. A PR is a software bug.

What is a Test Script?. A Test Script is a programming language. A Test Script is a standard of testing. Test script is the set of instructions written in programming or coding language that is performed on system under test conditions to verify the result as expected.