Operating System Memory & Deadlock Concepts Explained
Operating System Memory Management
Key Memory Management Concepts
Memory Management: How the OS handles allocation, tracking, and protection of memory used by processes.
Memory Abstraction: A way for the OS to give each process its own view of memory, isolating them and enabling multitasking.
Base Register: Stores the starting physical address of a process’s memory.
Limit Register: Specifies the range (size) of memory a process can access from its base.
Swapping: The act of moving processes in and out
Read MoreOperating System and File System Fundamentals Explained
Operating System and File System Fundamentals
Device Installation Without OS Recompilation
Modern operating systems use Loadable Kernel Modules (LKMs), which allow device drivers to be loaded at runtime without recompiling the kernel. Additionally, they use Plug-and-Play (PnP) systems and Hardware Abstraction Layers (HAL) to detect and configure new devices automatically. This makes it easy to add printers, USB drives, and other hardware dynamically.
Why Printer Output is Spooled to Disk
Printing is
Read MoreKey Concepts in Enterprise Software Development
Enterprise Software Fundamentals
Identifying Enterprise Software
Select all the following that would likely be considered enterprise software:
- B2B Portal
- Human Resource Management (HRM)
- Legal Document Management
- B2C Portal
- Accounts Receivables
- Order Processing
Agile Methodologies: Scrum
Key Characteristics of Scrum
Select all the statements that best describe Scrum:
- Small, prioritized deliverables
- Cross-functional, self-organized teams
Values Encouraged by Scrum
Select all the values Scrum encourages:
- Open communication
- Frequent
Web Dev Fundamentals: REST, JSON, MongoDB, React, Redux
REST API and HTTP Methods
REST API (Representational State Transfer API)
A REST API is a set of web services that follow the principles of REST, which is an architectural style for distributed systems. REST APIs are commonly used for building web services that allow communication between clients and servers over HTTP.
Key principles of REST:
Stateless: Every request from a client to a server must contain all the information needed to understand and process the request. The server does not store any
Key Concepts in Automata and Compilers
Pushdown Automata and CFLs
A Pushdown Automaton (PDA) is a type of computational model used to recognize context-free languages (CFLs). Unlike a finite automaton, a PDA has access to an auxiliary memory in the form of a stack. This stack allows the PDA to store and retrieve symbols in a last-in, first-out (LIFO) manner, enabling it to handle nested structures such as matching parentheses and recursive patterns, which are common in programming languages and natural languages.
A PDA accepts an input
Read MoreC Programming Fundamentals: Functions, Data Types, Structures, Loops
Role of Functions in Programming
Functions are fundamental building blocks in programming that serve several important roles:
- Modularity: Functions allow programmers to break down complex problems into smaller, manageable pieces. Each function can handle a specific task, making the code easier to understand and maintain.
- Reusability: Once a function is defined, it can be reused multiple times throughout a program or even in different programs. This reduces code duplication and enhances maintainability.