A developer wants to save a Python dictionary to a file so that it can be loaded in a later session of the same program. Which scenario best describes the purpose of serialization?

To compress the dictionary so that it occupies the minimum possible storage space on disk.

To convert the dictionary into a human-readable text file that can be edited with any text editor.

To encrypt the dictionary so that only authorized users can read its contents.

To transform the dictionary into a byte stream that can be written to a file and later reconstructed into an identical dictionary.

A developer is designing a data persistence layer for a Python application. The application needs to store a mix of data types: simple configuration values (strings, integers), a list of custom class instances, and a dictionary that is updated frequently. The developer wants to use a single persistence mechanism that can handle all these data types efficiently. The application runs on a single machine and does not require cross-language compatibility. Which approach is the most appropriate?

Use JSON to store the entire data structure in a single file.

Use pickle to serialize the entire data structure to a single file.

Use a combination of CSV for configuration and pickle for custom objects.

Use shelve to store each data item as a separate key.

A developer is working on a Python application that needs to serialize a large object graph. The developer is concerned about the size of the resulting pickle file and wants to reduce it. Which approach is most likely to reduce the file size?

Use protocol=0 to produce a text-based pickle format.

Use the highest protocol version available by specifying protocol=pickle.HIGHEST_PROTOCOL.

Use pickle.dumps() with the default protocol.

Use json.dumps() instead of pickle.dumps().

Python InstitutePCPP1 - Certified Professional Python Programmer 1

Domain 1Objective 11

PCPP-32-101 1.11 (De)serialize Python Objects PCPP-32-1 Practice Questions (Page 4)

Part of the Advanced Object-Oriented Programming domain, which accounts for 35% of the PCPP-32-1 exam. Python Institute does not publish an official question count, but from its 65-minute exam (~25–45 total, ~9–16 in this domain), expect 1–1 from this objective — we provide 18 practice questions to prepare you well beyond it. (estimate)

18questions here

4free pages

3concepts

35%of the exam

Questions 16–18

16foundation · easy
A developer wants to save a Python dictionary to a file so that it can be loaded in a later session of the same program. Which scenario best describes the purpose of serialization?
Select an answer first
17expert · hard
A developer is designing a data persistence layer for a Python application. The application needs to store a mix of data types: simple configuration values (strings, integers), a list of custom class instances, and a dictionary that is updated frequently. The developer wants to use a single persistence mechanism that can handle all these data types efficiently. The application runs on a single machine and does not require cross-language compatibility. Which approach is the most appropriate?
Select an answer first
18expert · hard
A developer is working on a Python application that needs to serialize a large object graph. The developer is concerned about the size of the resulting pickle file and wants to reduce it. Which approach is most likely to reduce the file size?
Select an answer first

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PCPP-32-101 1.11 (De)serialize Python Objects PCPP-32-1 Practice Questions (Page 4)

Questions 16–18

A developer wants to save a Python dictionary to a file so that it can be loaded in a later session of the same program. Which scenario best describes the purpose of serialization?

A developer is working on a Python application that needs to serialize a large object graph. The developer is concerned about the size of the resulting pickle file and wants to reduce it. Which approach is most likely to reduce the file size?

Keep studying — Advanced Object-Oriented Programming