Doubtly
@Doubtly · Joined Feb 2021
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- What are the three main purposes of an operating system? The three main purposes of an operating system (OS) are: Convenience: An operating system should be convenient for users to interact with an... 1
- Write a detailed note on the evolution of operating systems. The evolution of operating systems has been a gradual process that has spanned several decades. William Stallings, a renowned author of comp... 2
- Differentiate between monolithic, layered and microkernel structure of OS. StructureDescriptionAdvantagesDisadvantages MonolithicA monolithic operating system is a single, large program that includes all of the oper... 1
- Define system call? What are there different categories? Explain using suitable examples. A system call is a mechanism that allows user-level programs to request services from the operating system kernel. It provides a way for pro... 1
- Define the difference between preemptive and non-preemptive scheduling. Feature Preemptive Scheduling Non-Preemptive Scheduling CPU allocation Can be interrupted at any time Runs until completion or voluntarily y... 2
- What are the major functions performed by an operating system? Explain. An operating system (OS) is a software program that manages computer hardware and software resources and provides common services for comput... 1
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- The marks obtained by a student in 3 different subjects are input by the user. # Grade calculator print("Enter the marks you recieved in three subjects") max = int(input("maximum marks in Every Subject")) mks1 = int(inp... 2
- Write a program that prompts the user to input number of calls and calculate the monthly telephone bills # calculate your monthly bill for telephone call = int(input("Enter your number of calls for this month: ")) if call <= 100: bill = 200 elif... 1
- Write a program that prompts the user to input a year and determine whether the year is a leap year or not Answer: A year is a leap year if it is divisible by 4 but not by 100, or if it is divisible by 400. year = int(input("Enter a year: ")) if (... 1
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- Activity Prepare a temporary mount of one drop of pond water on a glass slide. here are the instructions for preparing a temporary mount of pond water on a glass slide and observing it under a microscope, written in the... 1
- Activity Take a small drop of curd or buttermilk on a clean glass slide. Dilute it with a little water. here are the steps for the activity: Materials needed: Glass slide Cover slip Curd or buttermilk Water Dropper Compound microscope Steps: Ta... 2
- Characteristics of Protozoa. Protozoa are unicellular, eukaryotic organisms belonging to kingdom, Protista. They are microscopic of the size of about 200 pm. They have d... 1
- Characteristics of Bacteria. Bacteria are microscopic, unicellular, prokaryotic organisms belonging to the kingdom Monera. Some bacteria are solitary with independent ex... 1
- Characteristics of Fungi. The organisms which are placed in kingdom Fungi are multicellular, heterotrophic, non-green, and eukaryotic in nature. Most of the fungi are... 1
- Explain merits and demerits of Whittaker’s classification. I. Merits of Whittaker’s classification: The classification system that Whittaker has adapted is totally based on scientific foundation. Pro... 1