Operating System Concepts

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Questions and Answers

Match the following concepts with their descriptions:

Banker's algorithm = Prevents deadlock by ensuring safe state Deadlock = A situation where two or more processes are blocked indefinitely Demand paging = A memory management technique that loads pages only when needed Paging = Divides physical memory into fixed-size blocks

Match the following concepts with their descriptions:

Dispatcher = A module that gives control of the CPU to the process selected by the scheduler Hypervisor = A piece of software that creates and runs virtual machines Kernel mode = A privileged mode of the CPU that allows direct access to hardware System libraries = A collection of pre-compiled routines that can be linked to and used by a program

Match the following concepts with their descriptions:

inode = A data structure that represents a file on disk File handle = A unique identifier for a file opened by a process FCFS scheduling = A scheduling algorithm that executes processes in the order they arrive Symmetric multiprocessor hardware = A system with multiple CPUs that share a common memory

Match the following concepts with their descriptions:

Translation look-aside buffer = A cache that stores recently accessed page table entries Page fault = An event that occurs when a process accesses a page not in memory Write-back caching = A technique that writes data to cache and delays writes to main memory Memory mapped I/O = A technique that allows a program to access I/O devices as memory Signup and view all the answers

Match the following concepts with their descriptions:

Live migration = Transferring a virtual machine from one physical host to another Raw disk = A disk that does not have a file system Network-attached storage = A file-level data storage connected to a network Storage-area network = A high-speed network used to connect storage devices Signup and view all the answers

Match the following concepts with their descriptions:

RTL scheduling algorithm = A scheduling algorithm that assigns a fixed time slice to each process System utilities = Programs that perform maintenance or management tasks User and group identifier = A unique number associated with a user or group GNU General Public License = A free and open-source software license Signup and view all the answers