1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Why are these considered privileged/not privileged?

  1. Jan 29, 2013 #1
    1. Why are these considered privileged/not privileged?
    a. Set value of timer.
    b. Read the clock.
    c. Invoking a system call
    d. Check the current list of running processes


    3. a. Yes
    b. No
    c. Yes
    d. No

    I'm thinking b/d is not privileged because any one can have access to it? But I'm not sure what makes a and c privileged.
     
  2. jcsd
  3. Jan 29, 2013 #2

    Simon Bridge

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    2016 Award

    Think about (c): would you really want just anybody to be able to invoke a system call?
    Compare with (b) - does it matter who can read the clock?
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Why are these considered privileged/not privileged?
Loading...