Operating Systems.

The operating system boundaries application code hits, and what each one costs. Covers 9 sub-skills.

• Operating Systems · 1 of 3

  Shell Scripting & CLI

  Which scheduling system is commonly used on Unix-like hosts for recurring script execution?

  AsyslogBnohupCcronDinetd

• Operating Systems · 2 of 3

  Concurrency Primitives (Mutex, Semaphore)

  Which deadlock condition is avoided by enforcing a global lock acquisition order?

  AResource holdingBPreemptionCMutual exclusionDCircular wait

• Operating Systems · 3 of 3

  CPU Scheduling

  What risk can a scheduler that always runs the highest-ranked runnable job first introduce without safeguards?

  AInability to run interactive workloadsBAutomatic elimination of context switchesCStarvation of lower-priority tasksDGuaranteed equal CPU share