In the context of Unicode, what is a 'code point'?

A specific font used to render a character.

A sequence of bytes used to store a character in memory.

A unique numeric value assigned to each character in the Unicode standard.

A visual representation of a character on a screen.

Why is UTF-8 considered backward-compatible with ASCII?

Because UTF-8 uses the same byte sequences as ASCII for all characters, including non-English ones.

Because UTF-8 can be converted to ASCII without any data loss for any character.

Because ASCII characters (U+0000 to U+007F) are encoded as a single byte identical to their ASCII representation.

Because UTF-8 uses 7 bits per byte, matching ASCII's bit width.

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Domain 3Objective 1

PCAP-31-03 3.1 Understand Machine Representation of Characters PCAP-31 Practice Questions (Page 4)

Part of the Strings domain, which accounts for 18% of the PCAP-31 exam. Python Institute does not publish an official question count, but from its 65-minute exam (~25–45 total, ~5–8 in this domain), expect 2–3 from this objective — we provide 22 practice questions to prepare you well beyond it. (estimate)

22questions here

5free pages

4concepts

18%of the exam

Questions 16–20

16foundation · easy
In the context of Unicode, what is a 'code point'?
Select an answer first
17application · medium
A Python script is processing a UTF-8 encoded file that contains a mix of ASCII and non-ASCII characters. The developer needs to determine the byte length of each line to calculate network bandwidth. Which Python operation correctly returns the number of bytes a string occupies in UTF-8?
Select an answer first
18application · easy
A developer is writing a Python script that generates a JSON file. The JSON data contains a string with a double quote inside it. The developer needs to escape the double quote in the Python string literal. Which escape sequence should be used?
Select an answer first
19application · medium
A developer is writing a Python script that reads a binary file and needs to decode a sequence of bytes as UTF-8. The byte sequence is b'\xc3\xa9'. What character does this represent?
Select an answer first
20foundation · easy
Why is UTF-8 considered backward-compatible with ASCII?
Select an answer first

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PCAP-31-03 3.1 Understand Machine Representation of Characters PCAP-31 Practice Questions (Page 4)

Questions 16–20

In the context of Unicode, what is a 'code point'?

A Python script is processing a UTF-8 encoded file that contains a mix of ASCII and non-ASCII characters. The developer needs to determine the byte length of each line to calculate network bandwidth. Which Python operation correctly returns the number of bytes a string occupies in UTF-8?

A developer is writing a Python script that generates a JSON file. The JSON data contains a string with a double quote inside it. The developer needs to escape the double quote in the Python string literal. Which escape sequence should be used?

A developer is writing a Python script that reads a binary file and needs to decode a sequence of bytes as UTF-8. The byte sequence is b'\xc3\xa9'. What character does this represent?

Why is UTF-8 considered backward-compatible with ASCII?

Keep studying — Strings