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OMG UM0-401 Exam
UM0-401 OCRES-Intermediate Exam (Page 2 )

Updated On: 19-Jan-2026
Page 2 of 37
PDF with 180 Questions

An example of a module exhibiting temporal cohesion is a combination of-------

  1. the control and management of two onboard hardware clocks
  2. a 40 millisecond periodic navigation function and a 40 millisecond periodic display update function
  3. several mathematical functions such as the sine, cosine, and arctangent functions
  4. the vehicle speed and acceleration management functions

Answer(s): B



What two actions must occur in systems that use overlaying with a disk drive backing store? (Choose two.)

  1. Only data is stored on the disk and code is stored in RAM.
  2. A task executing in RAM can also execute code that is stored on the disk.
  3. The operating system must prevent each task in RAM from accessing RAM outside the area reserved for it.
  4. The code for the currently executing tasks is stored in RAM and that for the currently inactive tasks is stored on the disk, as managed by the operating system.

Answer(s): C,D



Which two statements about static memory allocation are true? (Choose two.)

  1. Garbage collection is not required.
  2. Memory fragmentation does not occur.
  3. Memory allocation units are always the same fixed size.
  4. Tasks must inform the run-time (e.g., operating system) the total amount of memory they will need before they begin requesting memory.

Answer(s): A,B



POSIX ----------------------

  1. is the same as UNIX
  2. is not designed for real-time systems
  3. does not support asynchronous I/O
  4. is an operating system interface standard

Answer(s): D



A scheduler runs tasks to completion instead of pre-empting tasks by time slicing or according to priority.
What two actions will occur? (Choose two.)

  1. Maximize the number of completed tasks per unit of time
  2. Minimize the task scheduling and context switching overheads
  3. Honor the commitment made to complete the task once it has begun executing
  4. Share the processor time fairly among ready tasks

Answer(s): B,C



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