Systems Quiz

A batch operating system is a type of operating system where users submit their jobs to the computer operator, who then groups similar jobs together and runs them as a batch. The users do not directly interact with the computer. This system is efficient for processing large volumes of similar jobs, but lacks user interaction and can result in CPU idle time.

The problems with batch systems include a lack of interaction between the user and the job, CPU idle time due to slower mechanical I/O devices, and difficulties in providing desired priority for jobs.

A real-time operating system is a data processing system that can process and respond to inputs within a very short time interval. Its purpose is to control the environment by quickly processing and responding to inputs, ensuring timely execution of tasks.

<p>A real-time system is characterized by its ability to process and respond to inputs within a very small time interval. Unlike other systems, it focuses on controlling the environment and ensuring timely execution of tasks.</p> Signup and view all the answers

<p>A multi-tasking operating system allows multiple tasks or programs to run concurrently on a single computer system. It divides the CPU time among different tasks, giving each task a time slice to execute. This enables efficient utilization of the CPU and allows users to perform multiple tasks simultaneously.</p> Signup and view all the answers

<p>Virtual memory is a technique that allows the execution of processes which are not completely available in memory. The main visible advantage of this scheme is that programs can be larger than physical memory.</p> Signup and view all the answers

<p>The purpose of separating user logical memory from physical memory is to provide an extremely large virtual memory for programmers when only a smaller physical memory is available.</p> Signup and view all the answers

<p>Three situations where the entire program is not required to be loaded fully in main memory are: 1) User written error handling routines are used only when an error occurred in the data or computation. 2) Certain options and features of a program may be used rarely. 3) Many tables are assigned a fixed amount of address space even though only a small amount of the table is actually used.</p> Signup and view all the answers

<p>Executing a program that is only partially in memory reduces the number of I/O needed to load or swap each user program into memory.</p> Signup and view all the answers

<p>The disadvantage of not being able to execute a program that is only partially in memory would be the loss of the benefits mentioned above, such as reduced I/O operations.</p> Signup and view all the answers