As we conclude, here is a list of questions for you to test your knowledge
regarding this chapter's material. You will find answers to selected
questions here:
https://github.com/PacktPublishing/Linux-Kernel-Programming/tree/master/solutions_to_assgn

Chapter 11 : Questions and/or Assignments

1. A Linux CLI utility to query/set process or thread scheduling policy and
priorities is ____; a CLI utility to query/set a process’s CPU affinity mask
is ___.
  a. psprio, cpumask
  b. chrt, taskset
  c. psl, maskcpu
  d. Any of the above work

2. Consider a Linux system with 8 CPU cores (numbered from 0 to 7); on it, a
process’s CPU affinity mask shows up as 0xed; this implies that the process
is not allowed to execute on CPU cores _____.
  a. 0, 3, and 5
  b. 0,2,3,5,6, and 7
  c. 1 and 4
  d. 1,2,3,5,6, and 7

3. On modern Linux systems, resource bandwidth allocation is properly done
by leveraging the kernel feature called _____.
  a. c-groups (CPU groups)
  b. Nice values
  c. CPU resource limits
  d. cgroups (control groups)

4. This feature (from Q 3) has a pseudo filesystem typically mounted at ______.
  a. /cgr/fs
  b. /sys/fs
  c. /proc/cgroup_cpu
  d. /sys/fs/cgroup

5. Vanilla or standard Linux is an OS that is ____.
  a. good on occasion
  b. only general-purpose (GPOS; no form of real time)
  c. hard real time (RTOS)
  d. general-purpose and can easily take on soft real-time workloads

6. By applying a patch, Linux can be run as a hard real-time OS (an RTOS):
True/False: ___ ; if true, this effort is now called _______ and is a Linux
Foundation project.
  a. True, Preempt-RT
  b. True, RTL (Real-Time Linux)
  c. False, <it’s not possible>
  d. True, HardLinux