Question 61 of 144
SK0-005 server-administration Practice Question
A corporation's backup strategy currently involves a weekly full backup every Saturday night and daily differential backups Monday through Friday. The company has a 5 TB dataset with a daily change rate of about 10%. The full backup takes 12 hours and runs into Monday morning, impacting production performance. The backup window is from 10 PM to 6 AM. The company requires faster backups that can complete within the window, and they also want an offsite copy of the backups for disaster recovery. The existing backup server has direct-attached disk storage and a tape library. The network bandwidth to the offsite location is limited to 100 Mbps. The administrator is evaluating changes to the backup methodology and infrastructure to meet these requirements. Which of the following solutions best addresses the speed and offsite requirements?
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
✓
Implement a disk-to-disk-to-cloud solution using changed block tracking for daily incrementals and replication to the cloud
Option D is correct because it uses changed block tracking to perform incremental backups quickly, stores them on disk (fast), and replicates to cloud, which achieves offsite copy despite limited bandwidth by sending only changed blocks. Option A is wrong because synthetic full backups still require reading all data to synthesize, and offsite copy is not addressed. Option B is wrong because multiple tape drives increase throughput but do not directly reduce the amount of data backed up daily, and offsite tape handling is manual. Option C is wrong because daily differentials will still grow each day and may exceed the window, and offsite is not specified.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Upgrade the tape library to use multiple tape drives for parallel backups and rotate tapes offsite daily
Why it's wrong here
Parallel drives can improve speed but do not reduce the daily data volume; offsiting tapes is manual and risky.
- ✗
Switch to synthetic full backups combined with incremental forever; store backups locally on disk
Why it's wrong here
Synthetic fulls can reduce backup time but still require a full pass of changed data; offsite copy is not addressed.
- ✓
Implement a disk-to-disk-to-cloud solution using changed block tracking for daily incrementals and replication to the cloud
Why this is correct
This minimizes daily backup time by only sending changed blocks, meets the window, and provides offsite cloud storage efficiently even with limited bandwidth.
- ✗
Continue weekly fulls but perform daily incremental backups instead of differentials; keep tapes on-site
Why it's wrong here
Incrementals would be faster but the full backup still takes 12 hours and offsite requirement is not met.
Visual reference
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Last reviewed: Jul 26, 2026
This SK0-005 practice question is part of Courseiva's free CompTIA 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 SK0-005 exam.
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