Final

Question 1

This event type occurs at predictable times in flow of control

Answer 1

Synchronous Event

Question 2

This is the most important characteristic of real time system

Answer 2

Determinism

Question 3

This is relative measure of the non-idle processing taking place

Answer 3

CPU utilization

Question 4

This system is one in which missing a single deadline may lead to complete or catastrophic system failure

Answer 4

Hard real-time system

Question 5

This utilization zone is considered overloaded

Answer 5

> 100%

Question 6

This I/O mechanism provides a data transfer mechanism that is convenient because it does not require the use of special CPU I/O instruction

Answer 6

Memory mapped I/O

Question 7

This device provides access to the computer’s memory and other devices in the system without CPU intervention

Answer 7

DMA (direct memory access)

Question 8

This type of memory technology is typically used in main memory

Answer 8

DRAM

Question 9

This mechanism imparts and implicit execution parallelism in the different cycles of processing an instruction

Answer 9

Pipelining

Question 10

This special variable is the most common method for protecting critical regions

Answer 10

Semaphores

Question 11

The process of saving and restoring sufficient information for real-time task so that it can be resumed after being interrupted

Answer 11

Context-switching

Question 12

In this scheduling algorithm, each executable task is assigned a fixed-time quantum called a time slice in which to execute

Answer 12

Round-robin scheduling

Question 13

This code interacts with other serially reusable resources and should not be preempted

Answer 13

Critical section

Question 14

Each real time task is associated with this data structure

Answer 14

Task control block (TCB)

Question 15

These types of langauges prohibit the mixing of types, forcing the programmer to be precise

Answer 15

Strongly typed

Question 16

This is the most common programming language used in embedded development

Answer 16

C

Question 17

These variables are within the scope of all code

Answer 17

Global

Question 18

This parameter passing technique passes the actual value of the parameter in the subroutine or function call

Answer 18

Call-by-value parameter passing

Question 19

This is a measure of whether a user can depend on the software

Answer 19

Reliability

Question 20

this is often referred to as ease of use, or user friendliness

Answer 20

Usability

Question 21

This method combines data and behavior into an encapsulated entity that better approximates the “things in the problem domain”

Answer 21

Object-oriented methodology

Question 22

This system call suspends the execution of a task when the call is issued

Answer 22

Blocking system call

Question 23

This involves the decomposition of software behavior in encapsulated software units

Answer 23

Modularity

Question 24

This procedure can either call itself or use itself in its construction

Answer 24

Recursion