AZ-400 Practice Question: Design and implement a source control strategy
This AZ-400 practice question tests your understanding of design and implement a source control strategy. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which TWO options are benefits of using Git LFS (Large File Storage) in a team environment? (Select TWO.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Prevents large files from being stored in the Git history
Option A is correct because Git LFS replaces large files in the repository with text pointer files, while the actual file content is stored in a separate remote store. This prevents the large files from bloating the Git history, which would otherwise permanently increase repository size for all clones and fetches.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Prevents large files from being stored in the Git history
Why this is correct
LFS stores large files separately.
Related concept
Read the scenario before looking for a memorised answer.
✗
Automatically detects and tracks all binary files in the repository
Why it's wrong here
LFS requires explicit configuration.
✓
Reduces the size of Git repository clones and fetches for team members
Why this is correct
Pointers replace large files.
Related concept
Read the scenario before looking for a memorised answer.
✗
Works only with GitHub and Azure Repos
Why it's wrong here
LFS works with many Git servers.
✗
Eliminates the need for Git when working with large binary files
Why it's wrong here
LFS is an extension, not a replacement.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates may assume Git LFS automatically handles all binary files (Option B) or that it works only with specific platforms (Option D), when in fact it requires explicit configuration and is widely supported across providers.
Detailed technical explanation
How to think about this question
Under the hood, Git LFS uses a smudge/filter mechanism: when cloning, the pointer file (typically a few hundred bytes) is downloaded, and the actual large file is lazily fetched on checkout via the smudge filter. This drastically reduces clone and fetch times for team members who do not need every version of every large file. A real-world scenario is a game development team storing `.fbx` or `.png` assets—without LFS, a single asset change could add hundreds of megabytes to the repository history permanently.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-400 question in full detail.
Design and implement a source control strategy — This question tests Design and implement a source control strategy — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Prevents large files from being stored in the Git history — Option A is correct because Git LFS replaces large files in the repository with text pointer files, while the actual file content is stored in a separate remote store. This prevents the large files from bloating the Git history, which would otherwise permanently increase repository size for all clones and fetches.
What should I do if I get this AZ-400 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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