Get premium membership and access questions with answers, video lessons as well as revision papers.
Services provided by operating systems.
a) PROGRAM EXECUTION;o.s handles many kinds of activities including user programs and system programs.
Major activities of operating sytems with respect to program execution.
• loads a program into memory .
• executes a program
• handles program execution.
• Provides program synchronization.
• Provides mechanism for process communication.
• Provides mechanism for deadlock handing.
b) I/O OPERATION;an i/o subsystem compromises of i/o devices and their corresponding driver software.
Major activities of operating sytems with respect to I/O operation.
• Drivers hide the peculiarities of specific hardware devices to the user.
• O.s manages the communication between the user and device drivers.
• i/o operation means read or write operation with any file or any specific i/o device.
• O.s provides the access to the required i/o device when required.
C) FILE SYSTEM MANIPULATION ;a file represents a collection of related information .
Note;a file system is a normally organized into directories(folder) for easy navigation.
Major activities of operating systems with respect to file system manipulation
• Programs needs to write and read a file .
• O.s give permission varies from read only,read write,denied and so on.
• O.s provides an interface to the user to create/delete files and directories.
• O.s provides an interface to create the backup of file system.
D)COMMUNICATION;operating systems manages communication between all the processes.
Multiple processes communicate with one another through communication lines known as network
o.s handles rooting and connection strategies and the problem of connection and security.
Major activities of operating systems with respect to communication.
• Transmission of data between communicating processes
• Link communicating processes via computer network.
e)ERROR HANDLING;error can occur anytime and anywhere either in cpu, in i/o devices or in the memory hardware.
Major activities of operating systems with respect to error handing.
• Operating systems constantly checks for possible errors.
• The operating systems take an appropriate action to ensure correct and consistent computing.
F) RESOURCE MANAGEMENT;incase of multi-user or mulititasking environment resources such as main memory ,cpu cycles and file storage are to be allocated to each user or job.
Major activities of operating systems with respect to resource management.
• Operating systems manages all kinds of resources using scheduling algorithm.
• Cpu scheduling algorithms are used for better utilization of cpu.
G)PROTECTION;protection refers to a mechanism or a way to control the access of programs,process or users to the resources defined by a computer system.
Major activities of operating systems with respect to protection.
• Operating systems ensures that all access to systems resources is controlled.
• Ensures that external i/o devices are protected from valid access attempts.
• The o.s provides Authentication features for each user by means of passwords.
Softwaretech answered the question on April 29, 2019 at 11:28
- List three Major activities of operating systems with respect to protection(Solved)
List three Major activities of operating systems with respect to protection.
Date posted: April 29, 2019. Answers (1)
- What are the major activities of the following operating systems services. (a)error handing. (b)resources management. (Solved)
What are the major activities of the following operating systems services.
(a)error handing.
(b)resources management.
Date posted: April 29, 2019. Answers (1)
- Describe communication services as a function of operating system(Solved)
Describe communication services as a function of operating system.
Date posted: April 29, 2019. Answers (1)
- Outline Major activities of operating systems with respect to file system manipulation(Solved)
Outline Major activities of operating systems with respect to file system manipulation.
Date posted: April 29, 2019. Answers (1)
- What are major activities of operating system with respect to I/O operation?(Solved)
What are major activities of operating system with respect to I/O operation?
Date posted: April 29, 2019. Answers (1)
- Outline Major activities of operating systems with respect to program execution(Solved)
Outline Major activities of operating systems with respect to program execution.
Date posted: April 29, 2019. Answers (1)
- Differentiate between user and kernel threads(Solved)
Differentiate between user and kernel threads.
Date posted: April 29, 2019. Answers (1)
- Briefly explain the classification of operating systems according to interface(Solved)
Briefly explain the classification of operating systems according to interface.
Date posted: April 29, 2019. Answers (1)
- Explain the classification of operating systems according to number of users(Solved)
Explain the classification of operating systems according to number of users.
Date posted: April 29, 2019. Answers (1)
- Define the following various types of process time (.i)completion time. (ii)Turn around time. (iii)waiting time.(Solved)
Define the following various types of process time
(i)Completion time.
(ii)Turn around time.
(iii)waiting time.
Date posted: April 27, 2019. Answers (1)
- What is meant by the term convoy effect?(Solved)
What is meant by the term convoy effect?
Date posted: April 27, 2019. Answers (1)
- What are the problems with first come first served scheduling algorithms?(Solved)
What are the problems with first come first served scheduling algorithms?
Date posted: April 27, 2019. Answers (1)
- List and explain five functions of an operating system(Solved)
List and explain five functions of an operating system.
Date posted: April 27, 2019. Answers (1)
- Explain the following types of schedulers. (a)long term scheduler. (b)short term scheduler. (c)medium term scheduler(Solved)
Explain the following types of schedulers.
(a)long term scheduler.
(b)short term scheduler.
(c)medium term scheduler
Date posted: April 27, 2019. Answers (1)
- Describe conditions of process scheduling queues(Solved)
Describe conditions of process scheduling queues.
Date posted: April 27, 2019. Answers (1)
- Explain the two general categories of process scheduling(Solved)
Explain the two general categories of process scheduling.
Date posted: April 27, 2019. Answers (1)
- Define the term process scheduling thus state its aims(Solved)
Define the term process scheduling thus state its aims.
Date posted: April 27, 2019. Answers (1)
- Describe process control block (pcb).(Solved)
Describe process control block (PCB).
Date posted: April 27, 2019. Answers (1)
- Outline various process states(Solved)
Outline various process states.
Date posted: April 27, 2019. Answers (1)
- Explain various divisions of process memory(Solved)
Explain various divisions of process memory.
Date posted: April 27, 2019. Answers (1)