Unit 1.1

What are the five key roles in the operating system lifecycle?

User, Inventor, Maker, Developer, and Support.

Who is positioned at the center of the OS experience?

The User.

What are the core expectations users have for an operating system?

That it be intuitive, easy to use, and reliable, offering maximum security and minimal downtime.

What is the Inventor responsible for?

The foundational aspects of the OS, including its core concept, initial design, architecture, and algorithms that define the system's behavior.

What is the Maker tasked with?

Building the physical computer hardware on which the operating system will run, involving the entire hardware development process.

What are Developers responsible for?

Writing the software programs that operate on the OS and the ongoing maintenance and improvement of the operating system over time.

What role does the Support Team serve?

The primary point of contact for users experiencing issues, providing technical assistance to individuals with questions or problems.

What high-level languages do Inventors use?

C, C++, or Java for designing concepts and algorithms.

What development tools do Inventors use?

Eclipse and Visual Studio.

What modeling language do Inventors use?

UML (Unified Modeling Language) for visual architecture representation.

What does UML stand for?

Unified Modeling Language.

What is UML used for?

Visual architecture representation of operating system design.

What hardware development tools do Makers use?

Circuit board design software, simulation tools, and debugging tools.

What diagnostic tools do Makers use?

Hardware diagnostic tools to identify and resolve hardware issues.

What development tools do Developers use?

Integrated Development Environments (IDEs) and debugging tools like GDB.

What is GDB?

A debugging tool used by developers.

What version control system do Developers use?

Git.

What build automation technologies do Developers use?

Jenkins or Travis CI.

What troubleshooting tools does the Support Team use?

Remote desktop software, helpdesk software, and diagnostic tools.

What issue management systems does the Support Team use?

Ticketing systems like JIRA or Zendesk to manage user requests and monitor issues.

What is the purpose of ticketing systems like JIRA or Zendesk?

To manage user requests and monitor issues.

What languages are typically required for OS implementation?

Low-level programming languages such as C or assembly language.

Why are low-level languages required for OS implementation?

Because the OS must directly manage and interact with computer hardware resources, including memory, input/output devices, and the processor.

What languages can be used for OS design and conceptualization?

High-level programming languages like C, C++, or Java.

What is the purpose of using high-level languages for OS design?

To allow for the abstract design of the system before it is implemented in low-level languages that can interface with hardware.

What is the fundamental distinction between implementation and design languages?

Implementation requires low-level languages (C, assembly) for hardware interaction; design uses high-level languages (C, C++, Java) for abstract concepts and algorithms.

What unique position does the C programming language hold?

It is considered both a low-level and a high-level language.

Why is C considered a low-level language?

It allows for direct interaction with hardware resources, making it suitable for OS implementation.

Why is C considered a high-level language?

Compared to assembly language, C provides constructs that allow for the expression of complex algorithms and data structures in a relatively concise and readable way.

What does the document emphasize about collaboration in OS development?

Effective communication and collaboration among personnel in each function are critical to developing a system that satisfies end user demands while remaining efficient and dependable.

What does seamless operation of an OS depend on?

Strong coordination and synergy among all roles, from initial design through to long-term user support.

What is the central focus in OS development?

The User and their needs.

What expectation do users have regarding OS security?

Maximum security.

What expectation do users have regarding OS downtime?

Minimal downtime.

What does the Inventor establish?

The architecture and algorithms that define the system's behavior.

What is the scope of the Maker's responsibility?

The entire hardware development process for building physical computer hardware.

What is the extent of the Developer's role beyond writing software?

Ongoing maintenance and improvement of the operating system over time.

What is the Support Team's relationship to users?

They serve as the primary point of contact for users experiencing issues.

What type of assistance does the Support Team provide?

Technical assistance to individuals who have questions or problems with the OS.

Name two IDEs that Inventors might use.

Eclipse and Visual Studio.

What is the purpose of circuit board design software?

Used by Makers in hardware development.

What is the purpose of simulation tools in hardware development?

Used by Makers to test and validate hardware designs before physical implementation.

What does Git provide for Developers?

Version control for managing code changes and collaboration.

What is Jenkins?

A build automation technology used by Developers.

What is Travis CI?

A build automation technology used by Developers.

What is the purpose of build automation technologies?

To automate the process of compiling, testing, and deploying software.

What is remote desktop software used for?

By the Support Team for troubleshooting user issues remotely.

What is helpdesk software used for?

By the Support Team to manage and track technical assistance requests.

What hardware resources must an OS directly manage?

Memory, input/output devices, and the processor.

What can be designed abstractly before hardware implementation?

The initial architecture, concepts, and algorithms of an OS.

What allows C to express complex algorithms concisely?

Constructs that provide higher-level abstractions compared to assembly language.

Compared to what language is C considered high-level?

Assembly language.

What makes C suitable for OS implementation?

Its ability to allow direct interaction with hardware resources.

What is assembly language?

A low-level programming language that provides direct hardware control, more primitive than C.

What is the relationship between design and implementation in OS development?

Design is done abstractly with high-level languages, then implemented in low-level languages for hardware interaction.

Why are distinct roles necessary in OS development?

Because of the complexity and specialization required across hardware, software, design, and support functions.

What depends on effective execution of each role?

The success of the operating system.

What must an OS be for users?

Intuitive, easy to use, and reliable.

What are users dependent on the OS for?

Their daily tasks.

What aspects of the OS does the Inventor define?

The core concept, initial design, architecture, and algorithms.

What does the Developer write?

Software programs that operate on the OS.

What does the Developer maintain?

The operating system over time.

What issues does the Support Team help with?

Questions or problems users have with the OS.

What type of representation does UML provide?

Visual architecture representation.

What do hardware diagnostic tools do?

Identify and resolve hardware issues.

What is an IDE?

Integrated Development Environment - a comprehensive tool for software development.

What does GDB stand for?

GNU Debugger (a debugging tool).

What do version control systems manage?

Code changes, collaboration, and project history.

What do ticketing systems manage?

User requests and issue tracking.

What type of languages allow direct hardware management?

Low-level programming languages like C and assembly.

What type of languages are used for abstract design?

High-level programming languages like C, C++, or Java.

What hardware components must an OS interact with?

Memory, input/output devices, and the processor.

What quality must an OS maintain according to user expectations?

Reliability with maximum security and minimal downtime.

What is critical to developing a system that satisfies end user demands?

Effective communication and collaboration among personnel in each function.

What must an OS remain while satisfying user demands?

Efficient and dependable.

What necessitates strong coordination in OS development?

The distinct roles and complex tools involved.

From what stage to what stage does OS collaboration extend?

From initial design through to long-term user support.

What is the relationship between the User and other roles?

The User is the central focus that all other roles (Inventor, Maker, Developer, Support) work to serve.

What aspect of C makes it unique among programming languages?

Its dual nature as both a low-level and high-level language.

What advantage does C have over assembly language?

More concise and readable way to express complex algorithms and data structures.

What advantage does assembly language have over C?

Even more direct hardware control (though less readable).