PCPP2 Database Access Practice Question
Which PyMongo method should be used to update a single document if you want to modify specific fields without replacing the entire document?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
update_one
The update_one method with the $set operator allows updating specific fields.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
update_one
Why this is correct
update_one uses operators like $set to modify fields.
- ✗
upsert
Why it's wrong here
upsert is an option, not a method name.
- ✗
save
Why it's wrong here
save is deprecated in newer versions of PyMongo.
- ✗
replace_one
Why it's wrong here
replace_one replaces the entire document.
- ✗
update_many
Why it's wrong here
update_many is for updating multiple documents, not just one.
About these practice questions
One of 194 original PCPP2 practice questions on Courseiva, each with a full explanation and wrong-answer analysis — not exam dumps or protected exam content. Learn why practice questions differ from exam dumps →
JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed August 2026 · checked against the official Python Institute exam blueprint
This PCPP2 practice question is part of Courseiva's free Python Institute certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCPP2 exam.