- A
Increase the NAS capacity so more backup jobs can be stored.
Why wrong: More storage helps retention, but it does not protect backups from ransomware or prove they are restorable.
- B
Add another full backup each night to create more copies on the same NAS.
Why wrong: More copies on the same system still leave backups reachable to the same compromise path and do not improve isolation.
- C
Use an offline or immutable backup copy and perform regular restore tests.
An offline or immutable backup reduces the chance that ransomware can encrypt or delete recovery data, and restore testing proves that the backups actually work. This combination improves resilience more effectively than simply storing more data on the same always-online system.
- D
Compress the backup files to reduce network usage during the nightly job.
Why wrong: Compression can improve efficiency, but it does nothing to protect against compromise or improve disaster recovery confidence.
Quick Answer
The answer is to implement an offline or immutable backup copy with regular restore tests. This is correct because ransomware often targets online, network-accessible backups managed by the same admin group, as described in the scenario; an offline or immutable copy physically or logically prevents encryption or deletion of the backup data, while restore tests confirm that the data is actually recoverable, directly improving backup recovery assurance against ransomware without a full redesign. On the Security+ SY0-701 exam, this question tests your understanding of backup and recovery strategies under Domain 3 (Implementation), specifically the principle of defense in depth for backups. A common trap is to assume that simply moving the backup to a different folder or using the same admin credentials is sufficient, but the key is isolating the backup from the attack surface. Remember the mnemonic “OIR” for Offline, Immutable, and Restore-tested—if your backup can be seen by the ransomware, it can be held for ransom.
SY0-701 Security Operations Practice Question
This SY0-701 practice question tests your understanding of security operations. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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.
An ERP database is backed up nightly to a NAS that remains online and is managed with the same admin group as production servers. After a ransomware incident, management wants the most effective change to improve recovery assurance without redesigning the whole environment. What should be implemented?
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
Use an offline or immutable backup copy and perform regular restore tests.
Option C is correct because an offline or immutable backup copy ensures that ransomware cannot encrypt or delete the backup data, and regular restore tests verify that the backups are actually recoverable. This directly addresses the core requirement of improving recovery assurance without redesigning the environment, as it protects the backup from the same attack vector that compromised the production servers and the NAS managed by the same admin group.
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.
- ✗
Increase the NAS capacity so more backup jobs can be stored.
Why it's wrong here
More storage helps retention, but it does not protect backups from ransomware or prove they are restorable.
- ✗
Add another full backup each night to create more copies on the same NAS.
Why it's wrong here
More copies on the same system still leave backups reachable to the same compromise path and do not improve isolation.
- ✓
Use an offline or immutable backup copy and perform regular restore tests.
Why this is correct
An offline or immutable backup reduces the chance that ransomware can encrypt or delete recovery data, and restore testing proves that the backups actually work. This combination improves resilience more effectively than simply storing more data on the same always-online system.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
Compress the backup files to reduce network usage during the nightly job.
Why it's wrong here
Compression can improve efficiency, but it does nothing to protect against compromise or improve disaster recovery confidence.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume more copies or more storage (options A and B) improve recovery assurance, but they fail to recognize that all copies on the same online, writable NAS are equally vulnerable to ransomware encryption or deletion, making isolation and immutability the key differentiators.
Detailed technical explanation
How to think about this question
Immutable backups are typically implemented using object lock (e.g., S3 Object Lock with a retention mode like GOVERNANCE or COMPLIANCE) or write-once-read-many (WORM) storage, which prevents any user, including administrators, from modifying or deleting data until a specified retention period expires. Regular restore tests, such as performing a full database recovery in an isolated environment, validate the integrity of the backup chain and ensure that the recovery point objective (RPO) and recovery time objective (RTO) are achievable, which is critical for recovery assurance.
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 SOC analyst notices unusual lateral movement in the network at 2 AM. The IR playbook dictates: identify and contain (isolate the affected machine), then eradicate (remove the malware), then recover (restore from backup), then document. Skipping containment before eradication risks the attacker regaining access. Questions like this test the sequence and rationale of incident response phases.
What to study next
Got this wrong? Here's your next step.
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FAQ
Questions learners often ask
What does this SY0-701 question test?
Security Operations — This question tests Security Operations — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Use an offline or immutable backup copy and perform regular restore tests. — Option C is correct because an offline or immutable backup copy ensures that ransomware cannot encrypt or delete the backup data, and regular restore tests verify that the backups are actually recoverable. This directly addresses the core requirement of improving recovery assurance without redesigning the environment, as it protects the backup from the same attack vector that compromised the production servers and the NAS managed by the same admin group.
What should I do if I get this SY0-701 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.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
Same concept, more angles
3 more ways this is tested on SY0-701
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. An engineering firm backs up its file server every night to a NAS that is always mounted to the production domain. After a ransomware event, management asks for the most effective improvement to reduce the chance that backups are encrypted along with production data. What should be recommended?
medium- A.Increase the backup frequency but leave the NAS always online
- ✓ B.Keep an offline or immutable backup copy that is not continuously reachable from production
- C.Store backups in the same server room for faster restore times
- D.Use only local snapshots on the file server because they are simpler to manage
Why B: Option B is correct because an offline or immutable backup copy that is not continuously reachable from the production domain prevents ransomware from encrypting it. Since the NAS is always mounted to the production domain, it is vulnerable to lateral movement and encryption by ransomware. An offline backup (e.g., tape or disconnected disk) or an immutable backup (e.g., using S3 Object Lock or a write-once file system) ensures that even if production data is compromised, the backup remains intact and recoverable.
Variation 2. A branch office uses a NAS for nightly backups, but the NAS is joined to the same domain as the production servers. After ransomware encrypted both production data and backups, management wants the most effective change to reduce the chance of backup tampering without a major redesign. Which control should be implemented?
medium- A.Increase the retention period so deleted files can be recovered for longer.
- B.Move backups to a larger NAS with more available storage capacity.
- ✓ C.Keep one backup copy offline or immutable and outside the production domain.
- D.Run backups more frequently to the same NAS so newer files are captured sooner.
Why C: Option C is correct because keeping one backup copy offline or immutable and outside the production domain ensures that even if ransomware compromises the domain, it cannot encrypt or tamper with that isolated copy. This breaks the chain of trust between the production environment and the backup storage, directly addressing the root cause of the incident.
Variation 3. A branch office stores nightly backups on a NAS that is joined to the same Active Directory domain as the production servers. After a ransomware incident, management wants a backup design that is much harder for attackers to encrypt or delete. Which approach is the best improvement?
medium- A.Increase the backup frequency to every hour while keeping the same NAS design.
- B.Store all backups on the same network segment for faster restore access.
- ✓ C.Maintain an offline or immutable backup copy in a separate administrative boundary.
- D.Use only snapshots on the production storage array because they are instant to restore.
Why C: Option C is correct because maintaining an offline or immutable backup copy in a separate administrative boundary ensures that attackers cannot encrypt or delete the backups, even if they compromise the Active Directory domain. An offline backup (e.g., tape or disconnected disk) is physically isolated, while immutable backups (e.g., using S3 Object Lock or a NAS with WORM capabilities) prevent modification or deletion for a defined retention period. This design breaks the attacker's ability to propagate ransomware to the backup repository, addressing the core requirement of making backups much harder to encrypt or delete.
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Last reviewed: Jun 11, 2026
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