OSS Exam #1: Operating Systems Concepts

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List the five categories of Operating Systems

-Batch -Interactive -Real-time -Hybrid -Embedded

The responsibilities of the Device Manger include... (4)

-Choosing the most efficient resource allocation method -Allocating the device -Starting device operation -Dellocating the device

Responsibilities of the File Manager include... (3)

-Enforcing user/program resource allocation restrictions -Controlling user/program modification restrictions -Allocating resources

What are the two levels of responsibility of the Process Manager?

-Handle jobs as the enter the system -Manage each process within these jobs

List subsystems of an OS (5)

-Memory Manager -Processor Manager -Device Manager -File Manager -Network Manager

List the Operating Systems requirements in Embedded Systems... (3)

-Perform specific set of programs -Not interchangeable among systems -Small kernel and flexible function capabilities

Responsibilities of Memory Manager (4)

-Preserving space in main memory occupied by OS -Checking validity and legality of memory space request -Setting up memory tracking table -Deallocating memory to reclaim it

The two distinguishing features of an Operating Systems category are...

-Response time -How data enters into the system

An instance of program execution tracked by the Process Manager is called...

A process

The Device Manager chooses the most efficient resource allocation method based on...

A scheduling policy

This type of Operating System denotes a computer placed inside another product to add features and capabilities...

Embedded Systems

Interactive Systems were introduced to provide what?

Fast turnaround

This type of Operating System is a combination of Batch and Interactive Systems

Hybrid Systems

How is efficiency measured in Batch Systems?

In throughput

Which category of Operating Systems is faster than Batch, but slower than Real-time?

Interactive System

The Memory Manager is in charge of...

Main memory; RAM

In a Batch System, how must information be input into the system?

On punch cards or tape

"Reliability is key" describes this type of Operating System?...

Real-Time Systems

This type of Real-Time System suffers performance degradation, but not failure if the predicted timeline is missed...

Soft

Which subsystem manager is in charge of monitoring all resources?

The Device Manager

This subsystem manager is in charge of tracking every file in the system...

The File Manager

What handles jobs as they enter the system?

The Job Scheduler

This subsystem manager provides a convenient way for users to share resources...

The Network Manager

What manages each process within each job that enters the system?

The Process Scheduler

This subsystem is in charge of allocating the CPU

The Processor Manager

In Hybrid Systems, this load is light...

The interactive load

What is throughput?

The number of jobs completed per timespan

What kind of SW was developed specifically for Interactive Systems?

Time-Sharing SW

Describe what happens if the predicted timeline is missed in a Hard Real-Time System

Total system failure is risked

Network Manager resources include both HW and SW. (T/F)

True

The Network Manger controls users' access to shared resources? (T/F)

True


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