350-601 Storage Network Practice Question
An organization uses synchronous replication between two storage arrays for disaster recovery. Which three characteristics apply to synchronous replication? (Choose three.)
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
✓
Write acknowledgment is sent only after data is written to both arrays.
Synchronous replication writes data to both primary and secondary arrays before acknowledging the write. This ensures zero RPO and minimal data loss, but increases write latency due to the round trip. It is typically used over short distances.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It requires less bandwidth than asynchronous replication.
Why it's wrong here
Synchronous may require more bandwidth due to constant writes.
- ✓
Write acknowledgment is sent only after data is written to both arrays.
Why this is correct
This ensures data consistency.
- ✓
It increases write latency compared to asynchronous replication.
Why this is correct
The round trip to the secondary array adds latency.
- ✗
It is suitable for long-distance links with high latency.
Why it's wrong here
High latency impacts performance severely; best for short distances.
- ✓
It provides zero Recovery Point Objective (RPO).
Why this is correct
No data loss occurs as data is mirrored synchronously.
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