2.1.7 Programming

Lavington ICT
Quiz by Lavington ICT, updated more than 1 year ago
Lavington ICT
Created by Lavington ICT over 6 years ago
201
7

Description

a451 2.1.7 ocr computing

Resource summary

Question 1

Question
An algorithm can be defined as...
Answer
  • defined set of steps that can be used to complete a task.
  • a set of steps that can be used to complete a task.
  • a random set of steps that can be used to complete a task.
  • an order of doing things correctly to complete something.

Question 2

Question
Sequence is when...
Answer
  • instructions are executed one after another.
  • instructions are executed one after another in a series.
  • instructions are executed by the user.
  • instructions are executed one after another but not always in series.

Question 3

Question
Selection is when...
Answer
  • a program will execute instructions regardless of what the use does.
  • a program will execute certain instructions based upon the users actions.
  • a program will execute certain instructions based on conditions.
  • a program will execute all instructions regardless of what the user does.

Question 4

Question
Selection statements include...
Answer
  • IF, THEN, ELSE & CASE
  • IF,ELSE & CASE
  • IF, THAN, ELSE & CASE
  • IF, THEN, ELSE, ELIF & CASE

Question 5

Question
In computer programming 'iteration' is used to...
Answer
  • loop around and around a piece of code until the correct answer is chosen.
  • loop around a piece of code until a condition is met that activates the next part of the program.
  • loop around and around a piece of code until a condition is met that ends the iteration.
  • loop twice around a piece of code until a condition is met that ends the iteration.

Question 6

Question
In programming a translator is used to convert different programming languages into machine code. There are three types...
Answer
  • Assembler, interpreter & compiler.
  • Assembler, identifier & compiler.
  • Assembler, identifier & interpreter.
  • Compiler, identifier & interpreter.

Question 7

Question
An interpreter is a translator that converts high level languages into machine code. It does this by...
Answer
  • working three lines at a time, checking syntax, converting to machine code and executing the code.
  • working one line at a time, converting to machine code, checking syntax and executing the code.
  • working one line at a time, checking syntax, converting to machine code and executing the code.
  • working three lines at a time, converting to machine code, checking syntax and executing the code.

Question 8

Question
A compiler is a translator that converts high level programming languages into machine code. It does this by...
Answer
  • working through the whole program (source code), checking the syntax, then converting to machine code and creating an object. The object code is executed not the source code.
  • working through the whole program (source code), then converting to machine code and creating an executable object. The object code is executed not the source code.
  • working through the whole program (source code) one line at a time, checking the syntax, then converting to machine code and creating an executable object. The object code is executed not the source code.
  • working through the whole program (source code), checking the syntax, then converting to machine code and creating an executable object. The object code is executed not the source code.

Question 9

Question
An assembler translator...
Answer
  • converts assembly language programs into machine code.
  • converts programs created in any language into machine code
  • converts programs created in any high level language into machine code

Question 10

Question
Syntax is a set of rules that defines how a program statements must be written in order for the translator to understand them. A syntax error is...
Answer
  • an error in the spelling of program statements.
  • an error in the format of the program statements such as missing keywords.
  • an error in the format of the program statements such as missing semi-colons or keywords spelt incorrectly.
  • an error in the punctuation of program statements.

Question 11

Question
Logic errors in programs are...
Answer
  • errors in program statements that means the outcome is unexpected, even though the program will run.
  • errors in the algorithm that means the outcome is expected, even though the program will run.
  • errors in the algorithm that means the outcome is unexpected, even though the program will run.
  • errors in the algorithm that means the outcome returns nothing as the program will not run.

Question 12

Question
An integer is a data type that typically takes up 2 bytes of memory. Which of the following is an integer?
Answer
  • 2.6
  • "2.6"
  • 26
  • 26.0

Question 13

Question
A real number (or float) is a data type for fractional numbers that typically takes up 4 bytes of memory. Which of the following is a real number?
Answer
  • 26
  • "26.0"
  • 260
  • 2.60

Question 14

Question
A string is a data type that typically takes up 1 byte per character. Which of the following is a string?
Answer
  • hello world
  • "!h3ll0 world4"
  • "hello w0rld
  • h3llo world"

Question 15

Question
What is the main difference between a constant and a variable?
Answer
  • A constant's value remains the same where as a variables value can change.
  • A constant's value only changes if a variables value changes.
  • A constant's value remains the same where as a variables value can be changed by the user.
  • A constant's value remains the same where as a variables value can change be changed, but only once.
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