Grade 10 Theory IV — Data Representation & File Management

Question 1

What is the smallest unit of data a computer can store, representing either a 0 or a 1?

Question 2

How many bits make up one byte?

Question 3

Which number system uses only the digits 0 and 1?

Question 4

Which number system do humans normally use for everyday counting, using digits 0-9?

Question 5

Which number system uses 16 symbols (0-9 and A-F), often used as a compact way to represent binary values, e.g. in colour codes?

Question 6

What is the decimal (base 10) equivalent of the binary number 1011?

Question 7

What is the binary equivalent of the decimal number 10?

Question 8

A character encoding standard that assigns a unique numeric code to each character (letters, digits, symbols) so text can be stored digitally is:

Question 9

Which of these is a primitive data type used to store whole numbers with no decimal portion?

Question 10

Which of these is a primitive data type specifically used to store numbers WITH a decimal portion?

Question 11

A file's specification typically includes its drive, path and filename, plus one more part that identifies its type. What is it?

Question 12

Which of these is a valid reason for organising files into a hierarchical folder structure?

Question 13

The program used to browse, organise, move, rename and delete files and folders is called a:

Question 14

Combining several files and folders into one file — without necessarily reducing their total size — for long-term storage or easier transfer, is called:

Question 15

Which of these file types would you expect to hold SOURCE CODE, i.e. human-readable instructions written by a programmer?

Question 16

Which of these file types is an already-compiled, directly executable program, as opposed to source code?

Question 17

Saving a document as a different file type or version — e.g. saving a .docx as a .pdf — is called:

Question 18 — Match the columns

Match each number system in Column A to its base/radix in Column B.

Question 19 — Match the columns

Match each file management term in Column A to its description in Column B.

Question 20

Which of these best describes why computers ultimately represent all data — text, images, sound — using binary?