ISYS104 W13 L1.docx

Multiple operating systems that share the same

Info icon This preview shows pages 3–4. Sign up to view the full content.

View Full Document Right Arrow Icon
- Multiple operating systems that share the same hardware - The local operating system is the Host OS - Hosted operating system is a virtual machine 15. Explain Firmware. - Software installed in resources - Examples are the software the runs printers, scanners etc. - This installation occurs in Read-Only Memory (ROM) which can only be updated by someone with administrator access 16. What are the Problems in Multi-User Applications? - Lost update problem: o When multiple people access the same resource at the same time, there is a chance that one person will override the edit saved by another person o This means the initial update is lost o The solution is locking -> only allows access of one person at a time
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
17. What is Normalisation? - The process of converting description of data into a well-structured table used for later use - This happens before a database is created to ensure the highest efficiency, reducing later issues (issues such as duplicate data) 18. Explain VPN. - Virtual Private Network - Uses the internet/private internet to create the appearance of a private, secure, point-to-point connection through the use of a VP client - VPN client to VPN server is known as a tunnel - All data transferred through the tunnel is encrypted/decrypted 19. Explain Value Chain with an Example. - A value chain is a network of value creating activities - This chain consists of primary activities, secondary activities and the linkages the occur between these activities
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern