Operating Systems: Program Execution and I/O Operations

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What does the UNIX OS kernel mainly provide?

System-call interface

File system, CPU scheduling, memory management (correct)

User interface

Hardware

In the traditional UNIX system structure, where does the kernel lie?

At layer N

Above the user interface

At layer 0

Below the system-call interface (correct)

What is the highest layer in the layered approach of the operating system?

Memory management

Layer N (correct)

User interface

Hardware

Which part of the UNIX OS is responsible for providing direct interaction with users?

System-call interface Signup and view all the answers

What does the bottom layer (layer 0) in the operating system represent?

The hardware Signup and view all the answers

What is a key function of an operating system related to program execution?

Loading a program into memory and running it Signup and view all the answers

Which service of an operating system involves managing the file system?

I/O operations Signup and view all the answers

In the context of operating system services, what does 'error detection' refer to?

Detecting possible errors in CPU, memory hardware, I/O devices, or user programs Signup and view all the answers

Which OS function focuses on ensuring efficient resource allocation in multi-user environments?

Resource allocation Signup and view all the answers

What is a common method of communication between processes in a computer system?

Shared memory Signup and view all the answers

Why are debugging facilities important in an operating system?

To help users and programmers efficiently use the system Signup and view all the answers

Which of the following system call types involves creating and deleting files, as well as reading and writing to files?

File management Signup and view all the answers

What is the primary purpose of the Command Line Interface (CLI)?

Fetching commands from the user and executing them Signup and view all the answers

In the context of system calls, what does parameter passing via tables involve?

Storing parameters in a block in memory and passing the block address Signup and view all the answers

What is the role of system services according to the text?

Providing a convenient environment for program development and execution Signup and view all the answers

Which type of interface is characterized by a user-friendly desktop metaphor using icons and mouse interactions?

User Operating System Interface - GUI Signup and view all the answers

What is the main purpose of protection control system calls?

Ensuring all access to system resources is controlled Signup and view all the answers

Which high-level language is commonly used to write system call implementations?

C++ Signup and view all the answers

What distinguishes touchscreen interfaces from traditional mouse-based interfaces?

Interaction based on gestures due to the absence of a mouse Signup and view all the answers

What distinguishes the standard C library from system calls?

The standard C library provides an API level abstraction above system calls. Signup and view all the answers

What is not a common type of communication handled through system calls according to the text?

Sending physical mail between processes Signup and view all the answers

What do background services in an operating system typically do?

Provide facilities like disk checking and process scheduling Signup and view all the answers

Which of the following is NOT a function of system services in an operating system?

Data encryption and decryption Signup and view all the answers

What is the purpose of a linker in the context of operating systems?

Combine object files into a single binary executable file Signup and view all the answers

Which type of program is typically responsible for creating and modifying files?

Application programs Signup and view all the answers

What is the role of program loading and execution in an operating system?

Loading binary executables into memory for execution Signup and view all the answers

Which of the following is a function of system services related to status information?

Providing detailed performance information Signup and view all the answers

Which type of loaders assigns final addresses to program parts based on memory location?

Absolute loaders Signup and view all the answers

What differentiates application programs from other system components in an operating system?

They don’t pertain to the core system functions Signup and view all the answers

In an operating system, what would be the function associated with programming-language support?

Providing compilers, debuggers, and assemblers Signup and view all the answers

What is the primary role of communication services in an operating system?

Facilitating virtual connections among processes, users, and systems Signup and view all the answers

What is the primary benefit of using a microkernel system structure?

Easier to extend the operating system to new architectures Signup and view all the answers

Which modern operating system is a hybrid of different architectural models?

Mac OS X Signup and view all the answers

What is a common challenge associated with the microkernel system structure?

Performance overhead of user space to kernel space communication Signup and view all the answers

What is the purpose of the bootstrap loader in an operating system?

Locate the kernel, load it into memory, and start it Signup and view all the answers

Why do most modern operating systems use a hybrid approach instead of a pure model?

To address diverse needs in performance, security, and usability Signup and view all the answers

What is the primary benefit of moving functionality from the kernel into user space in a microkernel system structure?

Enhanced system reliability Signup and view all the answers

What role does Unified Extensible Firmware Interface (UEFI) play in modern systems during boot sequence?

It replaces BIOS for initializing hardware and loading the kernel Signup and view all the answers

Why is debugging considered a crucial aspect of operating system development?

To fix errors or bugs in the system Signup and view all the answers

What differentiates a microkernel structure from a monolithic one?

'Moves as much from the kernel into user space' Signup and view all the answers

What action is required to have an operating system up and running on a new computer?

Configure for the specific system, compile, install, and boot it Signup and view all the answers