Process State Diagram Order. Answer: 1) New
2) Ready
3) Waiting
4) Running
5) Terminated
What are hardware locking solutions for the critical section? Answer: Atomic Instructions (e.g., test and set, swap)
Which of these is an advantage of multiprocessors and multi-core te...
What are hardware locking solutions for the critical section? Answer: Atomic Instructions (e.g., test
and set, swap)
Which of these is an advantage of multiprocessors and multi-core technology? Answer: 1) Increased
reliability
2) Economies of scale
3) Increased throughput
Describe how an operating system can be viewed differently depending on the use case (e.g.,
administrators, users, developers, system engineers). Answer: Users: All about ease of use. Simple
GUI allowing for easy operation.
Administrator: Command-line based. Access to deeper functions and custom operations, specified by
Admin. In other words, allows for advanced customization of OS functionality.
Developers: Code based. View and develop text based languages which create the foundation of how an
OS operates.
,Rate Memory for slow to fast (cheap to expensive). Answer: Tape-> Optical Drive-> HDD-> SSD->
RAM-> Cache-> Registers
What is the difference between a policy and mechanism? Why should they be separate? Answer:
Policy - what will be done
Mechanism - how will it be done
Separating allows for changes in the policy without having to consider how to implement the policy (the
mechanisms).
Describe the 3 key properties of a critical section, Answer: Mutual Exclusion: (only one process
allowed at a time)
Progress: (process thread of control moves ahead)
Bounded Waiting: (process cannot hold on to the critical section indefinitely)
Why is process synchronization needed? Answer: Processes can share resources and must therefore
be synchronized in order to maintain data integrity.
Name 3 key benefits to multi-threading? Answer: 1) Responsiveness
2) Resource sharing
3) Economy
4) Scalability
Operating system schedulers are responsible for order of task execution? T/F Answer: True
, Which of the following describes a type of environment for operating systems? Answer: 1) Mobile
2) Cloud (SaaS, PaaS, IaaS)
3) Distributed
4) Virtualization
Describe Stack. Answer: Temporary data, function parameter, return addresses, local variables
Describe Heap. Answer: Dynamically allocated memory for objects/structs
Describe Data. Answer: Global variables
Describe Text. Answer: Program Code
A preemptive kernel means that processes cannot be interrupted and need to finish before releasing
cpu time. T/F Answer: False
What is a thread? How does it differ from a process? Answer: 1) More light weight
2) Better resource utilization
3) Avoid single thread of control blocking behavior
The operating system uses queues for cpu and I/O to keep track of a list of jobs in various states. T/F
Answer: True
Which of these is NOT a type of operating system? Answer: Personal
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