OS CT and translators

Recap previous topics 1

Which word links these 2 images?

Multiple Select

Select the true statements about operating systems:

• A computer can only have one OS

• The OS manages memory, storage, security, printing and other useful functions of the system

• The OS provides a user interface

• All OSes allow you to use multiple programs at once

Multiple Choice

For a simple system with very limited processing power, you would use a _______________ OS:

• Embedded

• Real Time

• Distributed

• Multi-Tasking

• Multi-User

Multiple Choice

A virtual machine...

• uses secondary storage instead of RAM when the computer runs out of space on the main memory

• allows software to act as hardware, running code or an operating system within another OS.

• can only be used through the internet

• relies on cloud storage

Multiple Choice

Device drivers...

• allow peripherals to communicate with the OS

• allow users to communicate with the OS

• allow peripherals to work directly with the CPU

• allow users to change settings of their peripherals

Multiple Select

Open Source software is...

• Always bug free

• Usually well documented

• Fully editable

• Free to use

• Definitely suitable for use by a large organisation

Multiple Select

Converts high-level code to low-level:

• Interpreter

• Compiler

• Assembler

Multiple Select

Creates an executable file

• Interpreter

• Compiler

• Assembler

Multiple Select

Provides quicker debugging

• Interpreter

• Compiler

Multiple Select

Does not provide the source code to the user

• Interpreter

• Compiler

Multiple Choice

The correct order of the stages of compilation is:

• Lexical Analysis, Syntax Analysis, Code Generation, Code Optimisation

• Lexical Analysis, Syntax Analysis, Code Optimisation, Code Generation

• Syntax Analysis, Lexical Analysis, Code Optimisation, Code Generation

• Syntax Analysis, Lexical Analysis, Code Generation, Code Optimisation

Multiple Choice

Token creation is in:

• Lexical Analysis

• Syntax Analysis

• Code Generation

• Code Optimisation

Multiple Choice

Removing whitespace is in:

• Lexical Analysis

• Syntax Analysis

• Code Generation

• Code Optimisation

Multiple Choice

Which is an example of iteration?

• print("Hello")

• if a == b:

• for I in range (1,10):

Multiple Choice

This piece of code uses ...

• Sequence

• Selection

• Iteration

Fill in the Blanks

13 DIV 4 =

Fill in the Blanks

34 MOD 5 =

Multiple Choice

What is the output of the program if:
Die1 = 3, Die2 = 4 

• 2

• 7

• 0

• 1

Multiple Choice

What is the output of the program if Die1 = 5, Die2 =5 ?

• 20

• 15

• 7

• 0

Multiple Choice

DIV means...

• Dividing without including the remainder

• Dividing, but only writing the remainder

• Multiplying the number by itself

Multiple Choice

What is the first stage of thinking procedurally?

• Taking the problem defined by the user and breaking it down into its constituent parts

• Developing a solution

• Testing a solution

• Analysing a problem

Multiple Choice

What is the purpose of problem decomposition?

• To make complex problems easier to solve and more manageable by allowing tasks to be divided between a group of people according to individual skill sets.

• The process of separating ideas from specific instances of those ideas at work

• Any situation in the design or programming of a system when you would want more than one thing happening at the same time

• Letting the problem rot away

Multiple Select

What are the benefits of using top-down design?

• Problems can be solved and modules developed by different people

• Tasks can be tested separately. Modules are self-contained

• Uses abstraction to create algorithms and prototypes

• Wireframe designs are required before development can take place

Multiple Select

State advantages of utilising reusable components.

• More reliable than newly-coded components, as they have already been tested.

• This saves time, money and resources.

• Accuracy of the algorithms used

• Effectiveness of algorithm in managing the cache

• Content can be loaded without delay