Unit 2 Computer systems Assignment 2 P2, P3
Purpose of operating systems
An operating system is an important program that runs on every computer. The main purpose of having an operating system is to run programs. The operating system performs basic task, reorganising input from the keyboard and sending output to display screen, keeping track of files and directories on the disk. Also controls peripheral devices such as disk drives and printers. If you have a large system, the operating system has greater responsibilities and powers. It makes sure that different programs and users running at the same time does not interfere with each other. The operating system also has a responsibility for security and ensures that any unauthorised users does …show more content…
• BitLocker Drive encryption helps prevent unauthorised access to any files stored on any drives. People can still use the computer normally but Bit locker drive encryption can stop unauthorised users to read or use any of your files.
The file management system allows us to create a number of folders. Each folder can have sub folders inside it. Folders can contain files. It is important to give files and folders sensible names so we know what it is about. This is very good as it enables us to keep track of all our work.
These images shows the number of folders you can have inside, by having these folders it keeps track and organises your folder.
A device driver is a group of software files which enables one or more hardware devices to communicate with the computer’s operating system. Without the drivers, hardware device such as computer printer will not be able to work with the computer. If for some reason the appropriate driver is not installed, the function of the device may not work …show more content…
Fragmentation occurs after space reclaimed after files are deleted and is used to store parts to a larger file. The result is that files do not exist in disk locations. A fragmented file is slower to load to a RAM, that’s because the hard drive has to work harder to locate and read the cluster which forms the file. Most operating systems has an utility to defragment a file system. The utility may run as an ad, unplanned whenever needed and process or on a regular schedule.
Before a magnetic disk can be used, it needs to be prepared for use. This is called formatting. Formatting will erase all data that was previously stored on the disk. Disk formatted for the use on Microsoft Windows system will not read natively on an Apple Mac, it requires a special driver). Operating system like Microsoft Windows has GUI format utilities but it can also perform the same process as CLI.
Click here to unlock this and over one million essaysShow More
Perhaps many are confused about the existing commands linux, this time I will discuss about the linux basic commands used along with examples of its use. 1: Seeing identification (id and group id number) $ Id 2: Looking the calendar date of the system a. Looking at the current date $ Date b. See calendar $ Cal 9 2002 $ Cal -y 3: Seeing the machine identity $ Hostname
If there are so many programs, and the resources are limited, this software called (kernel) also decides when and how long a program should run. It is also called scheduling. It might be very complex to access the hardware directly, since there’re so many different hardware designs for the same type of components. Usually kernels implement somehow level of hardware abstraction to hide the underlying complexity from applications and provide a uniform interface. This also helps application developers to develop
FTI leverages native storage and multiple replications and erasures techniques to supply many levels of dependability and performance. FTI provides application-level check inform that enables users to pick out that knowledge must be protected, so as to enhance potency and avoid house, time and energy waste. Figure It offers an on the spot knowledge interface so users don 't have to be compelled to wear down files and/or directory names. All data is managed by FTI in a very clear fashion for the user.
New methods of installing storage to servers are constantly created by SAN’s. Such methods improve both the Availability and performance. Nowadays SAN’s are generally used to connect storage arrays that are shared and tape libraries to generally more than one server. SAN’s can also be used for fail-over clustering. SAN’s are very useful in regards of providing resistance to traditional network bottlenecks as it operates at high speed data transfers between storage devices and servers.
To repair the data in such environment, we confront two main challenges: 1. How to formally define the stability of the data, that is, how to measure the value in this cell is more stable than that in the other cells; 2. How to detect the violation when data continues changing. We define the stability by generating a history relation (or it is assumed to have) w.r.t the original database. The history relation keeps track of the updates history for every cell.
• The four major systems each have its own database and interfaces had to be built for them to all communicate with each other. This is caused information to show in multiple formats and is difficult to reconcile. Providing accurate reports for banking and government regulators is very challenging.
Thanks to its flash storage which uses solid state technology, which means there are no moving parts. Without any moving mechanical parts, flash storage is more reliable, durable and quiet than traditional hard drives. And, it takes up much less space than a traditional hard drive too. That creates room
I have been asked to use Ubuntu? One comparison between windows and linux is that Linux is a lot freer than windows because windows are restricted. Another comparison is windows are a lot safer because if something breaks you get paid support whereas on Linux you do not have any support. My experience with Linux is not much as I am entirely a windows user.
User authentication in Ubuntu 15.04 systems in an AD environment All HACKD, LLC systems are supposed to be connected to the Microsoft Active Directory domain. However, after implementing Ubuntu 15.04 in the systems that were running on Windows XP, there is a need to ensure interoperability by allowing Ubuntu users to join the AD domain using their credentials. In such instances, the Samba software suite is used to provide AD connectivity and provide stable, secure and fast file sharing and print services to all clients using the SMB/CIFS protocol. In this case, Samba is a critical component for integrating Linux clients in a Windows environment (Samba.org, 2015).
Removable medias consist of Optical discs, Memory cards and Floppy disks. Hierarchical format consist is designed to store large amount of data. Flash drive is designed to is used to store and transfer data. 7. A individual can find a folder by using the start menu then clicking the search box and typing in the desired folder.
This can help delete all the malware or malicious content on the computer’s system. This can be the only way to save a computer at times, for example if the memory storage has been filled up with worms that keep copying themselves until the system stops responding. If this is the case then deleting everything can be the easiest way to stop. Other times, the malware is not visible to the user allowing it to travel through the system’s hard drive and damage the files. It can also be disguised as useful files.
The device is very useful, as whenever any application is run on your device, the user is notified whether it is not secure after the identification is done. It offers a high level of security compared to antivirus programs since it is not vulnerable to credential hijacking and insider tampering. Also, this feature is capable of working virtually, meaning that in any case the OS is compromised in any way, then the Device guard will not be affected in any way but it will continue to work