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COP4610 Exam 1 questions with verified answers
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COP4610 Exam 1 questions with verified answers
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COP4610 Exam 1Operating system - correct answer ✔✔A virtual machine that hides the complexity and limitation of
hardware from application programmers
Job - correct answer ✔✔A unit of programming
Batch System - correct answer ✔✔Collects a batch of jobs before processing them and printing out
results
Timeshares - correct answer ✔✔Each user can afford to user terminals to interact with machines
OS Design goals: - correct answer ✔✔Efficient use of the hardware
More efficient use of human resources
Allow a user to perform many tasks at one time
Ease of resource sharing between machines
Four phases of OS history - correct answer ✔✔Hardware expensive, humans cheap
Hardware cheap, humans expensive
Hardware very cheap, humans very expensive
Distributed systems
, Multiprocessing - correct answer ✔✔The ability to use multiple processors on the same machine
Multitasking - correct answer ✔✔Ability to run multiple programs on the same machine
Multiprogramming - correct answer ✔✔Multiple programs can run concurrently
Benefits of concurrency - correct answer ✔✔Can run multiple programs simultaneously
Better resource utilization
Better average response time
Better performance
Thread - correct answer ✔✔A sequential execution stream
Address space - correct answer ✔✔Contains all necessary states to run a program
Process - correct answer ✔✔An address space and at least one thread of execution
Difference between process and program - correct answer ✔✔A program is just a collection of
statements, a process is a running instance of a program.
Uniprogramming - correct answer ✔✔Running one process at a time
Multithreading - correct answer ✔✔having multiple threads per address space
Dispatching loop - correct answer ✔✔Run thread
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