COMBINED COP4600 - FINAL EXAM STUDY GUIDE QUESTIONS AND ANSWERS 2024

What is a path? - A path is a sequence of directories used to reference a file. They can be relative or absolute. Why do we need file systems? - 1. Locate free storage space 2. Store information in a persistent way (survives process termination) 3. Allow more than one process to access the in...

What does a process control block include? - Information on the process's state: process state/process number/program counter/registers/memory limits/list of open files/... Comparing virtual machines and containers, which one is more light weight and runs more efficiently? - Containers Which ...

Frame - In paging, physical memory is divided into a number of equal sized blocks. Each of these is referred to as a _________. Hit Ratio - The percentage of time that the desired information is found in the TLB Hot Stand By Mode - A computer that is monitoring other computers that are activel...

port - A __________ is a set of wires that connects an I/O device and the computer. daisy-chained - A device that allows other devices to hook up to it in turn is said to support __________ devices. bus - A __________ is a common set of wires used by more than one I/O device. controller - W...

Virtual Memory - A technique that allows us to run programs whose logical address space is larger than the physical address space TLB stands for - Translation Lookaside Buffer Translation Lookaside Buffer - TLB contains a subset of the page table to speed up memory access (like cache) Hit i...

process - A program in execution program - A passive executable file stored on disk. Becomes process when executable file is loaded into memory. One of these can be several processes progress - If no process is executing in its critical section and some processes wish to enter their critical s...

What pieces of hardware are in the CPU? - Registers, ALU, and control unit Hardware which serves as the CPUs memory. There are special and general purposed of these - Registers Hardware which does arithmetic and logical computations - ALU Hardware which tracks state/status. Also controls ot...

What must I/O devices be connected to in order to do anything? - A computer What is a port? - A set of wires that connects an I/O device and the computer. A device that allows other devices to hook up to it in turn is said to support what? - Daisy-chained devices What is a bus? - A common s...

The term ____________ refers to a technique in which a process can do nothing until it gets permission to enter its critical section but continues to execute an instruction or set of instructions that tests the appropriate variable to gain entrance. - spin (busy) waiting It is possible in a singl...

Algorithm - set of instructions with finite initial store and state, a starting point, and unambiguous ordering until the endpoint Process (general definition) - a program in execution = program + state Program - sequence of instructions that embody an algorithm Job - a task to be complete...

To do anything, a computer must be connected to _____ - I/O devices Port - A set of wires that connects an I/O device and the computer What does it mean when a device supports daisy-chained devices - It means that this device allows other devices to hook up to it Bus - common set of wires u...

OS and Memory - 1) Defines how memory is addressed 2) Memory protection 3) Memory allocation Memory Address - Indicates where data resides Physical Address - Absolute memory location on a chip Logical Address - Virtual address; Point to addresses larger than physical memory. Relative addr...