OS chapter 1

Below are the main objectives of an OS except

• maximize processor utilization

• convenience

• efficiency

• ability to evolve

Which of the following manages hardware; runs applications; provides an interface for users; and stores, retrieves, and manipulates files?

• Virtual machine

• Systray

• Registry

• Operating system

what is the behavior of the earliest computer?

• Early computers were very expensive

• user no longer has direct access to processor

• job is submitted to computer operator who batches them together and places them on an input device

• All of the above

Which is the types of Operating system?

• Simple Batch System

• Multiprogramming Batch System

• Clustered System

• All of the above

An OS manages files and folders using a file system. Two Windows file systems are FAT and ____________.

• Skinny

• NTFS

• Kernel

• Sector

What is the use of Time-Sharing System?

• Multiprocessor systems with more than one CPU in close communication.

• Can be used to handle multiple interactive jobs

• Concerned with how long an operating system delays before acknowledging an interrupt

• All of the above

Below are the example of Real-Time System except

• Desktop PC

• air traffic control

• telecommunications

• military command and control systems

Real-time operating systems have requirements in five general areas Determinism,Responsiveness,User control,Reliability and Fail-soft operation.

• True

• False

What is the definition of Determinism?

• It is essential to allow the user fine-grained control over task priority

• Concerned with how long an operating system delays before acknowledging an interrupt

• Distribute the computation among several physical processors

• Multiple users simultaneously access the system through terminals, with the OS interleaving the execution of each user program in a short burst or quantum of computation

Real-time systems respond to and control events in real time so loss or degradation of performance may have catastrophic consequences such as:

• major equipment damage

• financial loss

• loss of life

• All of the above