Operating Systems

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Which component of an operating system performs all the basic functions of the OS?

CPU

Kernel (correct)

Memory

File Manager

What is the purpose of a bootable CD/DVD?

To control execution of all other programs

To provide a user interface

To contain the core OS, applications, and utilities (correct)

To manage all hardware resources

What is the purpose of an executable file?

To manage all hardware resources

To give instructions to the computer (correct)

To provide a user interface

To perform all basic functions of the OS

What information does the exe header of an executable file contain?

Address of entry-point function Signup and view all the answers

What is the purpose of hardware abstraction in an operating system?

To hide hardware complexities from the user Signup and view all the answers

What is the purpose of the Process Control Block (PCB)?

To store information about the execution context of a process Signup and view all the answers

What is the difference between Global and Static variables in the BSS section?

Global variables are initialized while static variables are not Signup and view all the answers

What is the degree of multi-programming in a multi-programming system?

The number of programs that can be loaded in the memory at the same time Signup and view all the answers

What is the purpose of the task_struct in Linux?

To store information about the execution context of a process Signup and view all the answers

What is the purpose of a Resident Monitor in a batch system?

To monitor the execution of programs in memory Signup and view all the answers

What is the unit of the OS responsible for loading a mix of CPU bound and IO bound processes into memory?

Job scheduler Signup and view all the answers

What is the name of the unit of the OS responsible for selecting a process to be executed on the CPU?

CPU scheduler Signup and view all the answers

What is the term for sharing CPU time among multiple processes in the main memory?

Multi-tasking Signup and view all the answers

What is the term for a process that spends more time doing CPU computations than IO operations?

CPU bound Signup and view all the answers

What is the name of the type of multi-tasking where multiple independent processes are executing concurrently?

Process based multitasking Signup and view all the answers

What is the name of the type of multi-tasking where multiple parts/functions in a process are executing concurrently?

Thread based multitasking Signup and view all the answers

What is the name of the OS command used to track the currently logged in user and terminal?

who Signup and view all the answers

What is the purpose of using namespaces in code organization?

To prevent name collisions and organize code into logical groups Signup and view all the answers

What language does not have a namespace mechanism?

C Signup and view all the answers

What operator is used to refer to a function within a namespace without conflicts?

: Signup and view all the answers

Can instances of namespaces be created?

No Signup and view all the answers

What is the purpose of using inline functions over macros according to the text?

Macros are not type checked Signup and view all the answers

When is it appropriate to use inline functions according to the text?

When performance is needed Signup and view all the answers

What is the syntax for defining an inline function according to the text?

inline return_type functionname(int num1, int num2) {} Signup and view all the answers

What is the advantage of using inline functions according to the text?

They avoid the time overhead of a function call Signup and view all the answers

What is the disadvantage of using macros according to the text?

They are not type checked Signup and view all the answers

What is the difference between parameterized and non-parameterized manipulators in C++?

Parameterized manipulators require an argument and non-parameterized ones do not Signup and view all the answers

What is the main limitation of using macros in C++?

Macros do not perform type checking, which can lead to undesired results Signup and view all the answers

What is an inline function in C++?

A function that is treated as a macro by the compiler Signup and view all the answers

What is the purpose of namespace in C++?

To avoid naming conflicts between identifiers Signup and view all the answers

What is the syntax for defining a macro in C++?

#define macro_name value Signup and view all the answers