Exam (elaborations)
Computer science AQA A-level Paper 1 Exam Questions and Answers
- Module
- AQA A Level Computer Science
- Institution
- AQA A Level Computer Science
Computer science AQA A-level Paper 1 Exam Questions and Answers
[Show more]
Content preview
Computer science AQA A-levelPaper 1 Exam
Questions and Answers
What is an integer? - Answer>> A positive or negative whole
number
What is a Real or Float number? - Answer>> A positive or
negative number that can have a fractional part.
What is a Boolean? - Answer>> True or False
What is a character? - Answer>> A single letter, number or
symbol
What is a string? - Answer>> A group of characters
What is Date/Time? - Answer>> A way of storing Date/Time
What is a pointer? - Answer>> A way of storing a memory
address.
What is a record? - Answer>> A collection of related fields,
each of which could hold a different data type.
What is an array? - Answer>> A finite, indexed set of related
elements of the same data type.
What is a user defined data type? - Answer>> A data type
derived from existing data types in order to create a customized
data structure.
,What is variable declaration? - Answer>> Creating a variable
for the first time. giving it a name and sometimes a data type.
What is constant decleration? - Answer>> Creating a constant
for the first time.
What is assignment? - Answer>> giving a constant or a variable
a value.
what is iteration? - Answer>> repetition of a process e.g. a
while or for loop. this could be definite or indefinite.
What is selection? - Answer>> comparing values and then
choosing an appropriate action. e.g. an if statement.
what is a subroutine? - Answer>> A named block of code
containing a set of instructions designed to perform a frequently
used operation.
What is definite iteration? - Answer>> the number of repititions
is known before the loop starts.
What is indefinite iteration? - Answer>> the number of
repititions is not known before the loop starts.
What is a nested structure? - Answer>> One structure is placed
within another. Easily identified by indentation.
What is meant by meaningful identifier names? - Answer>>
Giving constants, variables and subroutines sensible and
meaningful identifier names.
, What does the real/float division operator do? - Answer>>
divides one number by the other.
What does the integer division operator do? - Answer>> divides
one number by the other but only returns the whole number part.
What does the modulo operator do? - Answer>> returns the
remainder of an integer division.
What does the exponentiation operator do? - Answer>> raises
one value to the power of another.
What does the rounding operator do? - Answer>> limits the
degree of accuracy of a number. (rounds up or down)
What does the truncation operator do? - Answer>> removes the
decimal part of a number. (never rounds up)
what does the string handling function "Length" do? - Answer>>
Returns the number of characters in a specified string.
what does the string handling function "position" do? -
Answer>> returns the position of a specified character within a
string.
what does the string handling function "concatenation" do? -
Answer>> joins two or more strings together to form a new and
longer string.
Is a function required to return a value? - Answer>> yes
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller RevisionKing. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £5.79. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73314 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now