Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) 200-201 Practice Test 9
Question 80
After the SOC automation specialist at the international logistics dispatch applies this approved action — Build time-aware baselines and alert on sustained deviation conditioned on established workload schedules. — the original issue is revisited: A SOC treats every traffic spike as malicious and ignores normal weekly backup peaks in historical measurements. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The analysis keeps base severity comparable while environmental priority distinguishes the critical hospital service.
- The controlled tunneling-like query set triggers review without treating normal CDN hostnames as confirmed exfiltration.
- The inventory includes the reachable staging service and its owner without inventing a confirmed vulnerability.
- The weekly backup window remains baseline-compliant while an unusual unscheduled burst is escalated.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Build time-aware baselines and alert on sustained deviation conditioned on established workload schedules. It proves the corrective or detection objective through observed evidence, not simply because a rule was saved or an alarm was acknowledged.
Incorrect Answers
A:This observation validates another cvss environmental metrics issue and the corrective action Adjust environmental impact and business-specific requirements according to the affected asset context. It cannot confirm the international logistics dispatch control. Required evidence for the current investigation is: The weekly backup window remains baseline-compliant while an unusual unscheduled burst is escalated.
B:This observation validates another dns tunneling indicators issue and the corrective action Correlate DNS label entropy, query rate, destination reputation and endpoint process evidence for possible tunneling. It cannot confirm the international logistics dispatch control. Required evidence for the current investigation is: The weekly backup window remains baseline-compliant while an unusual unscheduled burst is escalated.
C:This observation validates another public attack surface inventory issue and the corrective action Inventory exposed addresses, services and identities as attack surfaces separately from assessed vulnerabilities. It cannot confirm the international logistics dispatch control. Required evidence for the current investigation is: The weekly backup window remains baseline-compliant while an unusual unscheduled burst is escalated.
Question 81
After the cloud audit engineer at the multinational manufacturing network applies this approved action — Apply a time-bounded rule or just-in-time authorization and log the approved maintenance interval. — the original issue is revisited: Emergency access should expire after an on-call maintenance shift, but the access rule grants perpetual permissions. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- A stolen VPN password alone does not grant the test user access to a restricted application action.
- The command is permitted during the approved shift and denied immediately after expiry.
- The safe simulated sequence triggers detection despite absence of a known bad file hash.
- The persistence entry is identified and no longer relaunches after a controlled logon.
Explanation
Correct Answer
B:This outcome is the direct verification of the approved action: Apply a time-bounded rule or just-in-time authorization and log the approved maintenance interval. It proves the corrective or detection objective through observed evidence, not simply because a rule was saved or an alarm was acknowledged.
Incorrect Answers
A:This observation validates another layered credential controls issue and the corrective action Enforce distinct identity verification, network segmentation and application authorization as separate protective layers. It cannot confirm the multinational manufacturing network control. Required evidence for the current investigation is: The command is permitted during the approved shift and denied immediately after expiry.
C:This observation validates another indicators of attack issue and the corrective action Track behavioral IoA sequences with process lineage and account context, not only static file signatures. It cannot confirm the multinational manufacturing network control. Required evidence for the current investigation is: The command is permitted during the approved shift and denied immediately after expiry.
D:This observation validates another windows registry persistence issue and the corrective action Inspect authorized registry run locations and startup artifacts, preserving evidence before removing unauthorized entries. It cannot confirm the multinational manufacturing network control. Required evidence for the current investigation is: The command is permitted during the approved shift and denied immediately after expiry.
Question 82
A security monitoring architect at the city-service billing platform investigates during network tap coverage review: A sample hash appears in two endpoint records, and the SOC asserts that it proves both hosts downloaded the file from one particular URL. Interpret the actual protocol evidence and avoid claiming absent payload or session state. The team compares the result to a known-good baseline from another authorized system, and records the source clock offset. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Identify link-layer next-hop MAC addresses separately from end-to-end IP source and destination.
- Apply a time-bounded rule or just-in-time authorization and log the approved maintenance interval.
- Treat the event correlation and evidence assessment as detection-and-analysis activities.
- Use hashes to correlate content identity and seek independent download-path evidence before attributing the transfer source.
Explanation
Correct Answer
D:This action addresses the hash meaning issue in the city-service billing platform, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The report establishes matching bytes but leaves unobserved download paths uncertain. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different ethernet mac roles issue, such as: A packet capture crosses a router and the analyst assumes its frame destination MAC equals the remote internet application's MAC. It does not address the specific failure reported by the city-service billing platform. The decisive acceptance condition for this case is: The report establishes matching bytes but leaves unobserved download paths uncertain.
B:That action belongs to a different time-based authorization issue, such as: Emergency access should expire after an on-call maintenance shift, but the access rule grants perpetual permissions. It does not address the specific failure reported by the city-service billing platform. The decisive acceptance condition for this case is: The report establishes matching bytes but leaves unobserved download paths uncertain.
C:That action belongs to a different detection and analysis classification issue, such as: A SIEM correlates suspicious DNS and identity events but the team labels that analytic step as postincident lessons learned. It does not address the specific failure reported by the city-service billing platform. The decisive acceptance condition for this case is: The report establishes matching bytes but leaves unobserved download paths uncertain.
Question 83
During scheduled SOC detection audit, the municipal cyber defense office reports this evidence to a SOC automation specialist: A SIEM correlates suspicious DNS and identity events but the team labels that analytic step as postincident lessons learned. Protect regulated information and retain a tested service recovery path. The analyst must identify what the evidence does not prove and avoid inferring a new compromise from a generic alert. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Route the classified detection to the correct SOC escalation, data owner and privacy or legal stakeholders as policy requires.
- Inspect authorized application payload and correlate its relevant byte offset with the matching network session.
- Treat the event correlation and evidence assessment as detection-and-analysis activities.
- Add application-layer input validation and supported WAF logging scoped to the API attack surface.
Explanation
Correct Answer
C:This action addresses the detection and analysis classification issue in the municipal cyber defense office, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The timeline records when the incident was detected and why the evidence met investigation thresholds. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different detection stakeholder handoff issue, such as: Tier-1 analysts receive a suspected data leak but escalate only to facilities, omitting privacy and data owners. It does not address the specific failure reported by the municipal cyber defense office. The decisive acceptance condition for this case is: The timeline records when the incident was detected and why the evidence met investigation thresholds.
B:That action belongs to a different payload inspection boundaries issue, such as: An IDS flags HTTP injection inside a plaintext body, while an analyst attributes it to packet sequence numbers alone. It does not address the specific failure reported by the municipal cyber defense office. The decisive acceptance condition for this case is: The timeline records when the incident was detected and why the evidence met investigation thresholds.
D:That action belongs to a different application security instrumentation issue, such as: An internet API is vulnerable to unsafe request parsing but the team relies solely on a perimeter port ACL to detect malicious HTTP input. It does not address the specific failure reported by the municipal cyber defense office. The decisive acceptance condition for this case is: The timeline records when the incident was detected and why the evidence met investigation thresholds.
Question 84
After the cloud audit engineer at the regional datacenter operations applies this approved action — Correlate host process API telemetry to the originating executable and identity while keeping network records separate. — the original issue is revisited: A host sensor reports a process making credential-store API calls shortly before a suspicious network login, and the report attributes the calls to a router. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The reconstruction identifies the process initiating the API calls with supporting host evidence.
- The log interpretation identifies recipient policy rejection rather than transport establishment failure.
- The combined profile exposes the unusual cumulative transfer and links it to the originating process.
- The connection metadata shows the expected supported ephemeral key exchange and certificate authentication.
Explanation
Correct Answer
A:This outcome is the direct verification of the approved action: Correlate host process API telemetry to the originating executable and identity while keeping network records separate. It proves the corrective or detection objective through observed evidence, not simply because a rule was saved or an alarm was acknowledged.
Incorrect Answers
B:This observation validates another smtp sequence reading issue and the corrective action Interpret SMTP response codes at the application layer separately from socket and TLS connection status. It cannot confirm the regional datacenter operations control. Required evidence for the current investigation is: The reconstruction identifies the process initiating the API calls with supporting host evidence.
C:This observation validates another encoded upload behavior issue and the corrective action Aggregate transfers by client and destination over time and correlate process ancestry with authorized data-export policy. It cannot confirm the regional datacenter operations control. Required evidence for the current investigation is: The reconstruction identifies the process initiating the API calls with supporting host evidence.
D:This observation validates another key-exchange evidence issue and the corrective action Inspect the negotiated key-exchange mechanism and protocol transcript rather than inferring the mode from the certificate. It cannot confirm the regional datacenter operations control. Required evidence for the current investigation is: The reconstruction identifies the process initiating the API calls with supporting host evidence.
Question 85
An incident at the regional datacenter operations is escalated to a cloud audit engineer after forensic evidence quality assessment reveals: A host sensor reports a process making credential-store API calls shortly before a suspicious network login, and the report attributes the calls to a router. Do not reclassify a detection as malicious solely from a signature identifier. Investigators must record which observation is directly measured and which conclusion remains only an inference. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Classify the alarm as a false positive and tune the rule without disabling appropriate ransomware monitoring.
- Use a collision-resistant digest appropriate to the integrity requirement and document the algorithm and handling procedures.
- Correlate host process API telemetry to the originating executable and identity while keeping network records separate.
- Retrieve permitted full command-line and parent-process telemetry with executing identity for that event.
Explanation
Correct Answer
C:This action addresses the system api call interpretation issue in the regional datacenter operations, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The reconstruction identifies the process initiating the API calls with supporting host evidence. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different false positive classification issue, such as: A detection rule flags the approved nightly backup as ransomware, but workload validation confirms the file changes are benign. It does not address the specific failure reported by the regional datacenter operations. The decisive acceptance condition for this case is: The reconstruction identifies the process initiating the API calls with supporting host evidence.
B:That action belongs to a different endpoint hash collision assumption issue, such as: An analyst treats an MD5 match as absolute proof of file authenticity for a high-assurance chain-of-custody requirement. It does not address the specific failure reported by the regional datacenter operations. The decisive acceptance condition for this case is: The reconstruction identifies the process initiating the API calls with supporting host evidence.
D:That action belongs to a different process command line evidence issue, such as: An endpoint alert shows powershell.exe but not the argument string, and the SOC cannot tell whether the command was inventory or suspicious. It does not address the specific failure reported by the regional datacenter operations. The decisive acceptance condition for this case is: The reconstruction identifies the process initiating the API calls with supporting host evidence.
Question 86
A security monitoring architect at the energy-sector security monitoring center investigates during business continuity tabletop: A postincident improvement list includes many actions but no owner, due date or control effectiveness metric. Follow authorized incident-response roles and maintain evidence integrity throughout. The change team will retest the specific baseline failure without broad production scanning or unsafe payloads. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Assign named stakeholders and measurable follow-up evidence to lessons-learned improvements.
- Remove unauthorized persistence and validate clean recovery media before rejoining the endpoint to the approved network.
- Escape the literal period in the hostname regex and verify word or field boundaries.
- Apply a time-bounded rule or just-in-time authorization and log the approved maintenance interval.
Explanation
Correct Answer
A:This action addresses the lessons learned accountability issue in the energy-sector security monitoring center, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: Each action has a responsible owner, deadline and verifiable acceptance result. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
B:That action belongs to a different eradication before recovery issue, such as: A quarantined endpoint is restored from backup while a persistent malicious scheduled task remains on the same image. It does not address the specific failure reported by the energy-sector security monitoring center. The decisive acceptance condition for this case is: Each action has a responsible owner, deadline and verifiable acceptance result.
C:That action belongs to a different regex escaped dot issue, such as: A URL filter pattern uses an unescaped dot between hostname labels and accidentally matches unrelated characters. It does not address the specific failure reported by the energy-sector security monitoring center. The decisive acceptance condition for this case is: Each action has a responsible owner, deadline and verifiable acceptance result.
D:That action belongs to a different time-based authorization issue, such as: Emergency access should expire after an on-call maintenance shift, but the access rule grants perpetual permissions. It does not address the specific failure reported by the energy-sector security monitoring center. The decisive acceptance condition for this case is: Each action has a responsible owner, deadline and verifiable acceptance result.
Question 87
After the tier-1 security analyst at the medical claims application applies this approved action — Correlate endpoint behavior rules for unusual parent-child execution and persistence changes independent of file hash reputation. — the original issue is revisited: An unsigned process launches a script interpreter and alters startup persistence keys, but its hash is not in a known blacklist. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The simulation produces an endpoint behavior alert linked to the process tree and changed key.
- The altered sample is distinguished from the original without relying on filename or file extension.
- The unsafe pod configuration is rejected while a minimally privileged workload starts normally.
- The log interpretation identifies recipient policy rejection rather than transport establishment failure.
Explanation
Correct Answer
A:This outcome is the direct verification of the approved action: Correlate endpoint behavior rules for unusual parent-child execution and persistence changes independent of file hash reputation. It proves the corrective or detection objective through observed evidence, not simply because a rule was saved or an alarm was acknowledged.
Incorrect Answers
B:This observation validates another cryptographic hash comparison issue and the corrective action Compare the computed file hash to the trusted approved digest and preserve the suspect copy for investigation. It cannot confirm the medical claims application control. Required evidence for the current investigation is: The simulation produces an endpoint behavior alert linked to the process tree and changed key.
C:This observation validates another container security context issue and the corrective action Enforce runtime container least privilege and admission controls instead of treating image scanning as complete runtime security. It cannot confirm the medical claims application control. Required evidence for the current investigation is: The simulation produces an endpoint behavior alert linked to the process tree and changed key.
D:This observation validates another smtp sequence reading issue and the corrective action Interpret SMTP response codes at the application layer separately from socket and TLS connection status. It cannot confirm the medical claims application control. Required evidence for the current investigation is: The simulation produces an endpoint behavior alert linked to the process tree and changed key.
Question 88
An incident at the regional payments SOC is escalated to a SOC investigation lead after incident-response triage reveals: An edge service records a huge increase in half-open TCP handshakes and high SYN rates while application requests decline. Correlate network records to the correct identity and time without revealing unrelated customers. The analyst can capture a synthetic event in a segregated lab but cannot access unrelated customer payloads. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Correlate SYN/SYN-ACK completion, source dispersion and edge resource metrics to classify a suspected SYN flood.
- Verify the request through an established independent channel and report the lookalike login link under the phishing procedure.
- Require the designated service owner and security authority to approve restoration after objective validation.
- Aggregate transfers by client and destination over time and correlate process ancestry with authorized data-export policy.
Explanation
Correct Answer
A:This action addresses the tcp syn flood indicators issue in the regional payments SOC, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The telemetry shows abnormal incomplete handshakes and the mitigation preserves ordinary connections. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
B:That action belongs to a different credential phishing verification issue, such as: An analyst receives an email purporting to be the SOC lead requesting immediate authentication on a newly registered imitation portal. It does not address the specific failure reported by the regional payments SOC. The decisive acceptance condition for this case is: The telemetry shows abnormal incomplete handshakes and the mitigation preserves ordinary connections.
C:That action belongs to a different recovery approval responsibility issue, such as: A forensic investigator decides to reconnect a restored payment server without application-owner acceptance or network security verification. It does not address the specific failure reported by the regional payments SOC. The decisive acceptance condition for this case is: The telemetry shows abnormal incomplete handshakes and the mitigation preserves ordinary connections.
D:That action belongs to a different encoded upload behavior issue, such as: A workstation sends repeated small encrypted POST requests to an unapproved domain and the team dismisses them because individual packets are tiny. It does not address the specific failure reported by the regional payments SOC. The decisive acceptance condition for this case is: The telemetry shows abnormal incomplete handshakes and the mitigation preserves ordinary connections.
Question 89
An incident at the hospital network incident team is escalated to a host incident responder after endpoint isolation rehearsal reveals: A quarantined endpoint is restored from backup while a persistent malicious scheduled task remains on the same image. Do not expand containment or investigative access to unrelated tenants or systems. Investigators must record which observation is directly measured and which conclusion remains only an inference. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Publish a response plan defining roles, escalation paths, decision authority, contact methods and evidence responsibilities.
- Correlate authorized endpoint and server telemetry with TLS metadata rather than claiming encrypted payload visibility.
- Remove unauthorized persistence and validate clean recovery media before rejoining the endpoint to the approved network.
- Deploy the correct identity-matching leaf and intermediate CA chain and validate trust path and hostname.
Explanation
Correct Answer
C:This action addresses the eradication before recovery issue in the hospital network incident team, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: A controlled reboot shows no malicious startup artifacts and the endpoint satisfies integrity checks. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different incident response authority issue, such as: A ransomware alert arrives outside office hours and analysts cannot identify who may authorize network isolation or customer notifications. It does not address the specific failure reported by the hospital network incident team. The decisive acceptance condition for this case is: A controlled reboot shows no malicious startup artifacts and the endpoint satisfies integrity checks.
B:That action belongs to a different encrypted payload blind spot issue, such as: A passive network sensor receives TLS traffic but claims to identify the exact file contents transferred from packet headers alone. It does not address the specific failure reported by the hospital network incident team. The decisive acceptance condition for this case is: A controlled reboot shows no malicious startup artifacts and the endpoint satisfies integrity checks.
D:That action belongs to a different tls trust-chain validation issue, such as: A browser displays a certificate warning because a backend serves a self-signed leaf where clients expect a trusted CA chain. It does not address the specific failure reported by the hospital network incident team. The decisive acceptance condition for this case is: A controlled reboot shows no malicious startup artifacts and the endpoint satisfies integrity checks.
Question 90
After the security monitoring architect at the telecom customer identity platform applies this approved action — Interpret IPv6 next-header chaining and extension fields before identifying the transport protocol. — the original issue is revisited: A capture shows IPv6 packets with a next-header value for TCP after permitted extension headers, but the parser labels them all as UDP. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The revised flow record identifies the initial source and destination consistent with the handshake.
- The same account's denied and approved tests appear as distinct normalized outcomes.
- A controlled ARP check resolves to the authorized gateway and the conflicting port is identified.
- The decoded header chain reveals the actual supported transport without false UDP classification.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Interpret IPv6 next-header chaining and extension fields before identifying the transport protocol. It proves the corrective or detection objective through observed evidence, not simply because a rule was saved or an alarm was acknowledged.
Incorrect Answers
A:This observation validates another source and destination direction issue and the corrective action Follow the initial SYN direction and header fields to assign client and server endpoints correctly. It cannot confirm the telecom customer identity platform control. Required evidence for the current investigation is: The decoded header chain reveals the actual supported transport without false UDP classification.
B:This observation validates another authentication status codes issue and the corrective action Map identity provider event outcomes and failure reasons into consistent SIEM logon categories. It cannot confirm the telecom customer identity platform control. Required evidence for the current investigation is: The decoded header chain reveals the actual supported transport without false UDP classification.
C:This observation validates another arp spoofing indicators issue and the corrective action Compare expected gateway MAC bindings and switch port evidence before isolating the unauthorized ARP advertiser. It cannot confirm the telecom customer identity platform control. Required evidence for the current investigation is: The decoded header chain reveals the actual supported transport without false UDP classification.