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MN404 Fundamentals Of Operating Systems And Programming For Communications

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a.Describe the role of Operating Systems (OS) and its different subsystems in controlling computer hardware
b.Demonstrate competency in the use of a command line interface to operate and perform simple OS administration



The five most vital services of the Operating System are:

  1. Program Execution: The Operating framework gives the users a domain, for executing programs, proficiently. The user needs not to ever stress over the low-level works like Resource allocation, memory management and many more internal tasks.
  2. Communications: In the modern multi-tasking and multi-functional environment, it is vital for programs and processes to communicate among each other for the consistent transaction of data or information. The OS takes the responsibility to convey information among every one of these processes using the concept of shared memory instances.
  3. I/O task: Every program requires data as input, process handling and output functionalities to be performed. This makes the administration of management of the Input and output devices a pivotal duty for the Operating System. The user level projects cannot assist in I/O-based responsibilities directly; hence, consequently, the OS needs to assume responsibility [3].
  4. Resource allocation: In multitasking situations, more than one running process may simultaneously require similar assets like CPU, memory and more such resources. It is then the obligation of the Operating System to run calculations or algorithms to choose which process ought to get hold of specific resources. The time of this allocation is also decided by the algorithms that the CPU uses.
  5. Error Detection: It is the activity of the OS to recognize and manage the programmatic or hardware-based problems of any framework. One of the obligations of the OS is always monitor the system to detect errors or exceptions and handling them or presenting them before the user. These mistakes incorporate Input Output issues, memory overflow, boot sector exceptions and many more [2].

No, it is not possible for the application software to perform all the tasks that an Operating System is meant to do. The application software is designed to perform specific tasks and it is the OS’s duty to help these software applications run smoothly with every possible resource and requirements supplied.

Both Windows and LINUX give their clients a GUI or Graphical User Interface and furthermore a CUI or a Command Line Interface to perform a wide range of functions and operations. It is likewise significant that both these OS help their clients with multiprocessing, resource management, networking mechanisms and with several other valuable services. Nevertheless, the contrasts between them are sometimes more prominently highlighted. The CUI of Linux is considered as one of the best command line OS interface. It is used for a variety of operations like network management, software development and so on. The Linux commands are more versatile if compared to the Windows DOS commands. LINUX is additionally suggested above Windows, with regards to security, vigor and most importantly robustness [6]. However, Windows is more reasonable with regards to running an extensive variety of software products. Even though both provide an attractive and useful GUI to its users, the Windows GUI has always had the better edge over its counterpart as it provides numerous options and features. The Windows GUI is also much more flexible and interactive [4].


Multiprocessing operating systems express the utilization of at least two CPUs to perform operations for a computer framework. These CPUs stay in steady correspondence with each other by means of the bus, memory and device peripheral sharing. These kind of frameworks encourages the computer system to accomplish higher speed of data processing and process large data volumes. The sharing of resources and the use of calculative algorithms in order to allocate these resources to the various demanding processes makes the computer faster and robust. While one of the most bulky processes on the system can use one core or CPU elegantly, the other CPU can still be assisting the daily needs of the system or serve other smaller tasks. This prohibits several background tasks from crashing. Multiprocessing also increases the ability of the CPU to curb off the wastage of memory resources or the crashing down of programs due to heavy waiting time [1].

The ability of any Operating System to gather data or information and program parts together in a group also known as batch, before beginning with the processing, is called batch processing [5]. The OS characterizes the jobs that has predefined sequence of programs and information as incorporated units and these are then stored away in the physical memory drives of the computer system. The processor on the First-Come-First-Serve basis takes up these jobs. This process is reportedly acclaimed for speeding up hefty operations for the OS. This process has been in use since the invention of permanent and large storage units like Magnetic tapes, hard drives and so on.


[1] Wolf, Marilyn. High-performance embedded computing: applications in cyber-physical systems and mobile computing. Newnes, 2014.

[2] Silberschatz, Abraham, Peter Baer Galvin, and Greg Gagne. Operating system concepts essentials. John Wiley & Sons, Inc., 2014.

[3] Peter, Simon, Jialin Li, Irene Zhang, Dan RK Ports, Doug Woos, Arvind Krishnamurthy, Thomas Anderson, and Timothy Roscoe. "Arrakis: The operating system is the control plane." ACM Transactions on Computer Systems (TOCS) 33, no. 4 (2016): 11.

[4] Lee, Sang-Hyuk, and Seung-Hyun Oh. "A kinect sensor based windows control interface,”." International Journal of Control and Automation 7, no. 3 (2014): 113-124.

[5]  Bonomi, Flavio, Rodolfo Milito, Jiang Zhu, and Sateesh Addepalli. "Fog computing and its role in the internet of things." In Proceedings of the first edition of the MCC workshop on Mobile cloud computing, pp. 13-16. ACM, 2012.

[6] Uitto, Joni, Sampsa Rauti, Jari-Matti Mäkelä, and Ville Leppänen. "Preventing malicious attacks by diversifying Linux shell commands." In SPLST, pp. 206-220. 2015.

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