AQA A level computer - All topics

AQA A level computer - All topics

12th Grade

32 Qs

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AQA A level computer - All topics

AQA A level computer - All topics

Assessment

Quiz

Computers

12th Grade

Practice Problem

Medium

Created by

Louise Lockwood

Used 7+ times

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32 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following statements fully describes data in 2NF:

When any repeating fields have been removed and the table is given a primary key

When all repeating entries of data are removed and the fields in each table are directly related to the primary key and no fields are present that are not related to each other

When all the fields in each table are directly related to the primary key

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is a foreign key?

A unique identifier in a database

A primary key of one table that appears in another table

A field that should not be in a table and needs removing

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A relation is in 1NF if it doesn't contain any ____________?

Determinants

Repeating groups

Null values in primary key fields

Functional dependencies

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a relational database?

A database that is built from a set of unique tables containing data about one entity
 A database with one single large table
 A set of many databases about numerous, related topics

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is 0.125 in fixed point binary (4 bits for the whole number / 4 bits for fractional part)?

10001000

00000010

00001000

00011000

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What happens in FETCH immediately after the CPU reads the contents of the Program Counter to find the address of the next instruction to be fetched

The Program Counter is copied to the CIR

The Program Counter is incremented

The contents of the data bus is read

The contents of the MDR is read

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

What is a multitasking computer?

Multiple users can be logged in at the same time

A CPU core that can run more than one process at a time

Multiple programs can be running at the same time

A computer that can handle multiple input devices.

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