Using Encoded Data in Python 3 :Using Databases with Python (Python for Everybody Specialization) Answers 2025

Question 1

What is the most common Unicode encoding when moving data between systems?

✅ UTF-8
❌ UTF-16
❌ UTF-128
❌ UTF-64
❌ UTF-32

Explanation:
UTF-8 is the standard encoding for data transmission on the internet — compact, backward-compatible with ASCII, and universally supported.

Question 2

What is the ASCII character that is associated with the decimal value 42?

✅ *
❌ Newline
❌ w
❌ 0
❌ W

Explanation:
In the ASCII table, decimal 42 corresponds to the asterisk symbol (*).

Question 3

What word does the following sequence of numbers represent in ASCII:
108, 105, 115, 116

✅ list
❌ webs
❌ dict
❌ mist
❌ first

Explanation:
108 → l, 105 → i, 115 → s, 116 → t → together spell “list”.

Question 4

How are strings stored internally in Python 3?

✅ Unicode
❌ bubble memory
❌ EBCDIC
❌ UTF-16
❌ inverted

Explanation:
All strings in Python 3 are stored as Unicode objects, supporting all languages and characters.

Question 5

When reading data across the network (i.e. from a URL) in Python 3, what method must be used to convert it to the internal format used by strings?

✅ decode()
❌ split()
❌ encode()
❌ rstrip()
❌ internal()

Explanation:
Network data is received as bytes. The .decode() method converts it into a Unicode string suitable for processing in Python.

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