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Questions and Answers
Which of the following is not a part of system software levels discussed in the text?
Which of the following is not a part of system software levels discussed in the text?
During which phase of the system software life cycle is the source program submitted by the programmer processed?
During which phase of the system software life cycle is the source program submitted by the programmer processed?
In the context of system software levels, what is the role of a loader?
In the context of system software levels, what is the role of a loader?
Which activity primarily occurs during link time in the system software life cycle?
Which activity primarily occurs during link time in the system software life cycle?
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What is the main function of a firewall in the context of system software?
What is the main function of a firewall in the context of system software?
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How does a relocatable machine code differ from target machine code in the system software hierarchy?
How does a relocatable machine code differ from target machine code in the system software hierarchy?
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What is the stage in the software development life cycle (SDLC) where the software is actually built with all the functionality, interfaces, and support for execution?
What is the stage in the software development life cycle (SDLC) where the software is actually built with all the functionality, interfaces, and support for execution?
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In the context of system software development, what activity involves deciding and working around the software tools to develop the functionalities of the system software?
In the context of system software development, what activity involves deciding and working around the software tools to develop the functionalities of the system software?
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Which stage of SDLC is involved in specifying how the system software looks and how it will perform?
Which stage of SDLC is involved in specifying how the system software looks and how it will perform?
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When does the stage of system analysis in the SDLC gather information and identify the execution environment and interfaces required by the software to be built?
When does the stage of system analysis in the SDLC gather information and identify the execution environment and interfaces required by the software to be built?
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Which stage of SDLC determines what problems need to be fixed by the system software being developed and suggests better ways of solving those problems?
Which stage of SDLC determines what problems need to be fixed by the system software being developed and suggests better ways of solving those problems?
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What part of system software development focuses on designing the blueprint of the system software to specify its looks and performance?
What part of system software development focuses on designing the blueprint of the system software to specify its looks and performance?
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At what stage is the source code translated into machine code?
At what stage is the source code translated into machine code?
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What type of files are typically distributed during the distribution time stage?
What type of files are typically distributed during the distribution time stage?
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What is the primary purpose of the installation time stage?
What is the primary purpose of the installation time stage?
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When is the interface of a library typically linked and associated with the program?
When is the interface of a library typically linked and associated with the program?
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What happens during the link time stage?
What happens during the link time stage?
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During which stage is the executable image loaded into memory?
During which stage is the executable image loaded into memory?
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Study Notes
Software Development Process
- The software development process follows the Software Development Life Cycle (SDLC), which consists of several stages: preliminary investigation, system analysis, system design, system tool acquisition, implementation, and system maintenance.
- Preliminary investigation determines the problems that need to be fixed by the system software and identifies better solutions.
- System analysis investigates the problem on a large scale, gathers information, and identifies the execution environment and interfaces required by the software.
- System design creates a blueprint of the system software, specifying its look and performance.
- System tool acquisition decides on the software tools to develop the system software's functionalities.
- Implementation builds the software using the chosen tools, with all the functionality, interfaces, and support for execution.
- System maintenance involves updating the software after installation.
Recent Trends in Software Development
- Recent trends in program development include the use of preprocessors, JavaScript MV* frameworks, CSS frameworks, SVG, and gaming frameworks.
- Other trends include the development of single-page web apps, mobile web apps, and the use of cloud services.
- There is a shift towards using GPU over CPU, and agile development is becoming more popular.
Levels of System Software
- System software includes operating systems, utility programs, disk defrag, firewall, and target machine code.
- Other levels of system software include loaders, linkers, debuggers, library programs, language translators, and assemblers.
System Software Life Cycle
- The life cycle of system software includes compile time, distribution time, installation time, link time, load time, and run time.
- At compile time, the source code is translated into machine code and checked for errors.
- Distribution time sends or distributes the program from the creator to the user.
- Installation time makes the program ready for execution within the system.
- Link time links the specific implementation of the interface to the program.
- Load time takes the executable image from storage and places it into active memory for execution.
- Run time is the final stage of the system software life cycle.
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Description
Learn about the different stages of program development, from the raw code phase to the distribution stage. Explore the compilation process and how errors are checked before producing an executable file.
