Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) 200-201 Practice Test 12
Question 110
A threat intelligence analyst at the regional datacenter operations investigates during network tap coverage review: A PCAP contains TLS-encrypted file transfer, but no permitted session keys or endpoint artifact are available and analysts claim plaintext export. Interpret the actual protocol evidence and avoid claiming absent payload or session state. A second reviewer will compare the original rule, effective enforcement result and affected asset inventory. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Correlate UDP application transaction identifiers, ports and addresses rather than expecting TCP handshake state.
- Replace shell interpolation with a constrained argument-safe API and enforce allowed hostname formats.
- Report that encrypted payload reconstruction is unavailable without lawful decryption context; use approved endpoint artifact instead.
- Correlate the flow tuple and timestamp with NAT translation tables to identify the originating private host.
Explanation
Correct Answer
C:This action addresses the https extraction limit issue in the regional datacenter operations, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The report provides valid TLS metadata and does not invent recovered file content. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different udp transaction pairing issue, such as: A DNS request and reply use UDP with matching transaction ID, and the team looks for TCP ACK flags to prove the reply exists. It does not address the specific failure reported by the regional datacenter operations. The decisive acceptance condition for this case is: The report provides valid TLS metadata and does not invent recovered file content.
B:That action belongs to a different operating system command injection issue, such as: A troubleshooting web form passes unsanitized hostname text to a shell command executed as the service account. It does not address the specific failure reported by the regional datacenter operations. The decisive acceptance condition for this case is: The report provides valid TLS metadata and does not invent recovered file content.
D:That action belongs to a different nat translation context issue, such as: A firewall log shows a public NAT source that represents many internal clients, but the analyst blocks all users as one compromised host. It does not address the specific failure reported by the regional datacenter operations. The decisive acceptance condition for this case is: The report provides valid TLS metadata and does not invent recovered file content.
Question 111
After the forensic evidence custodian at the telecom customer identity platform applies this approved action — Detect and document configuration drift and apply the authorized baseline correction with tested rollback. — the original issue is revisited: A production firewall's effective policy differs from the approved configuration repository after a manual emergency edit. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- A controlled tabletop and technical drill produces documented gaps, owners and retest dates.
- The test input is treated as a bound value and no longer changes query logic.
- The conflicting ARP claim is mapped to an unauthorized switch port while legitimate gateway resolution continues.
- Postchange comparison matches the approved rules and an unauthorized deviation produces an alert.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Detect and document configuration drift and apply the authorized baseline correction with tested rollback. 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 playbook test criteria issue and the corrective action Define practical exercise cadence, acceptance checks and plan improvement based on measured test results. It cannot confirm the telecom customer identity platform control. Required evidence for the current investigation is: Postchange comparison matches the approved rules and an unauthorized deviation produces an alert.
B:This observation validates another sql injection recognition issue and the corrective action Use parameterized statements and server-side input validation instead of building SQL command strings from request data. It cannot confirm the telecom customer identity platform control. Required evidence for the current investigation is: Postchange comparison matches the approved rules and an unauthorized deviation produces an alert.
C:This observation validates another arp reply conflict issue and the corrective action Validate ARP sender-protocol and sender-hardware address bindings against trusted gateway inventory. It cannot confirm the telecom customer identity platform control. Required evidence for the current investigation is: Postchange comparison matches the approved rules and an unauthorized deviation produces an alert.
Question 112
A vulnerability management analyst at the national utility network service investigates during business continuity tabletop: A detection rule flags the approved nightly backup as ransomware, but workload validation confirms the file changes are benign. Interpret the actual protocol evidence and avoid claiming absent payload or session state. A second reviewer will compare the original rule, effective enforcement result and affected asset inventory. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Map bidirectional path coverage and correlate sessions using both tap positions or equivalent reliable flow exporters.
- Correlate the flow tuple and timestamp with NAT translation tables to identify the originating private host.
- Classify the alarm as a false positive and tune the rule without disabling appropriate ransomware monitoring.
- Limit the host firewall rule to the jump-host source and expected management port with auditing enabled.
Explanation
Correct Answer
C:This action addresses the false positive classification issue in the national utility network service, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The known benign backup no longer creates a critical incident while a controlled malicious-behavior test still alerts. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different asymmetric collection issue, such as: A monitor sees outbound requests but never records replies due to return-path routing through another switch. It does not address the specific failure reported by the national utility network service. The decisive acceptance condition for this case is: The known benign backup no longer creates a critical incident while a controlled malicious-behavior test still alerts.
B:That action belongs to a different nat translation context issue, such as: A firewall log shows a public NAT source that represents many internal clients, but the analyst blocks all users as one compromised host. It does not address the specific failure reported by the national utility network service. The decisive acceptance condition for this case is: The known benign backup no longer creates a critical incident while a controlled malicious-behavior test still alerts.
D:That action belongs to a different host firewall inbound application issue, such as: A Windows management service is accessible from a guest VLAN even though remote support must originate from a designated jump host. It does not address the specific failure reported by the national utility network service. The decisive acceptance condition for this case is: The known benign backup no longer creates a critical incident while a controlled malicious-behavior test still alerts.
Question 113
After the identity monitoring analyst at the telemedicine portal applies this approved action — Reconcile stable asset identity, service owner, network address history and configuration records before containment. — the original issue is revisited: A suspected compromised server cannot be assigned an owner because its address was reused and the CMDB lacks its serial and deployment context. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The source medium shows no investigator-induced writes and the acquired image has a validated digest.
- A benign test attachment with a controlled suspicious marker is quarantined with attributable mail metadata.
- The incident maps the suspicious flow to the correct accountable device and owner.
- The repeated rejected logins are attributed to the right remote source and service.
Explanation
Correct Answer
C:This outcome is the direct verification of the approved action: Reconcile stable asset identity, service owner, network address history and configuration records before containment. 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 write-blocked preservation issue and the corrective action Use authorized write-blocked acquisition and preserve the source medium in secure custody. It cannot confirm the telemedicine portal control. Required evidence for the current investigation is: The incident maps the suspicious flow to the correct accountable device and owner.
B:This observation validates another email filtering attachments issue and the corrective action Review secure email gateway attachment verdicts, sender authentication, and quarantine reason metadata. It cannot confirm the telemedicine portal control. Required evidence for the current investigation is: The incident maps the suspicious flow to the correct accountable device and owner.
D:This observation validates another linux authentication logs issue and the corrective action Examine the Linux authentication journal or auth log for SSHD failures and source addresses. It cannot confirm the telemedicine portal control. Required evidence for the current investigation is: The incident maps the suspicious flow to the correct accountable device and owner.
Question 114
A tier-1 security analyst at the customer support ticket service investigates during network tap coverage review: A server's advertised TLS suites include obsolete weak key-exchange modes that remain negotiable with legacy clients. Keep packet collection within the approved scope and do not assume encrypted payloads are readable. 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?
- Isolate the affected host under the response playbook and correlate file changes with process and network events.
- Require the designated service owner and security authority to approve restoration after objective validation.
- Restrict negotiated TLS cipher suites to the current approved authenticated encryption and key-exchange profile.
- Use a scoped rolling-time-window baseline with appropriate rate and deviation thresholds for the API identity.
Explanation
Correct Answer
C:This action addresses the cipher suite selection issue in the customer support ticket service, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The test client negotiates an approved suite and a weak-suite-only client cannot complete negotiation. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different ransomware behavioral signal issue, such as: An endpoint spawns a script that rapidly renames hundreds of files and contacts an unfamiliar management domain. It does not address the specific failure reported by the customer support ticket service. The decisive acceptance condition for this case is: The test client negotiates an approved suite and a weak-suite-only client cannot complete negotiation.
B: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 customer support ticket service. The decisive acceptance condition for this case is: The test client negotiates an approved suite and a weak-suite-only client cannot complete negotiation.
D:That action belongs to a different sliding-window anomalies issue, such as: A security alert triggers on raw daily request volume but misses a sudden five-minute burst against one API credential. It does not address the specific failure reported by the customer support ticket service. The decisive acceptance condition for this case is: The test client negotiates an approved suite and a weak-suite-only client cannot complete negotiation.
Question 115
After the forensic evidence custodian at the municipal cyber defense office applies this approved action — Aggregate query outcome ratios in short windows and compare to same-service historical baselines. — the original issue is revisited: A sudden spike in outbound DNS NXDOMAIN answers is hidden by normal daily query volume on a busy resolver. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The anomalous NXDOMAIN ratio triggers a test alert while regular operating periods remain within bounds.
- The investigation distinguishes the unapproved periodic client from legitimate scheduled update traffic.
- The incident record identifies the network IDS source without inventing endpoint execution telemetry.
- The lost device no longer reaches protected email and authorized devices remain enrolled.
Explanation
Correct Answer
A:This outcome is the direct verification of the approved action: Aggregate query outcome ratios in short windows and compare to same-service historical baselines. 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 command and control beacon issue and the corrective action Compare periodic flow timing to process ancestry and authorized management-agent schedules before classifying suspected C2. It cannot confirm the municipal cyber defense office control. Required evidence for the current investigation is: The anomalous NXDOMAIN ratio triggers a test alert while regular operating periods remain within bounds.
C:This observation validates another ids signature source issue and the corrective action Attribute the event to the network IDS sensor and validate the signature with supporting packet or flow context. It cannot confirm the municipal cyber defense office control. Required evidence for the current investigation is: The anomalous NXDOMAIN ratio triggers a test alert while regular operating periods remain within bounds.
D:This observation validates another mobile device offboarding issue and the corrective action Revoke device tokens and perform authorized selective wipe or device retirement under the mobile management policy. It cannot confirm the municipal cyber defense office control. Required evidence for the current investigation is: The anomalous NXDOMAIN ratio triggers a test alert while regular operating periods remain within bounds.
Question 116
After the SOC automation specialist at the government application security team applies this approved action — Validate bounds handling and deploy a tested supported patch for the affected parser, retaining crash evidence. — the original issue is revisited: A legacy listener crashes when a malformed-length test field is received, with memory fault telemetry and an application dump. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The summary identifies the high-volume host without collecting the original application payload.
- A controlled tabletop and technical drill produces documented gaps, owners and retest dates.
- A controlled sensor outage follows the approved traffic behavior and the operational alert is issued.
- A harmless oversized field is rejected and the service no longer crashes in controlled regression testing.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Validate bounds handling and deploy a tested supported patch for the affected parser, retaining crash evidence. It proves the corrective or detection objective through observed evidence, not simply because a rule was saved or an alarm was acknowledged. The relevant condition in this case is: After the SOC automation specialist at the government application security team applies this approved action — Validate bounds handling and deploy a tested supported patch for the affected parser, retaining crash evidence. — the original issue is revisited: A legacy….
Incorrect Answers
A:This observation validates another netflow session summary issue and the corrective action Aggregate approved flow records by endpoint, time, protocol, byte count and direction. It cannot confirm the government application security team control. Required evidence for the current investigation is: A harmless oversized field is rejected and the service no longer crashes in controlled regression testing.
B:This observation validates another playbook test criteria issue and the corrective action Define practical exercise cadence, acceptance checks and plan improvement based on measured test results. It cannot confirm the government application security team control. Required evidence for the current investigation is: A harmless oversized field is rejected and the service no longer crashes in controlled regression testing.
C:This observation validates another inline device failure mode issue and the corrective action Document the intended failure behavior, bypass path and availability-versus-security tradeoff before production cutover. It cannot confirm the government application security team control. Required evidence for the current investigation is: A harmless oversized field is rejected and the service no longer crashes in controlled regression testing.
Question 117
After the incident commander at the software deployment pipeline applies this approved action — Compute and record approved cryptographic digests for the source and each evidence copy with handling metadata. — the original issue is revisited: Two analysts transfer a forensic disk image with no baseline checksum and cannot prove that the copy matches its source. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The change record contains both business-function acceptance and security clearance.
- The case clearly records observed malware behavior and an appropriately qualified actor hypothesis.
- The copied image hash matches its original reference digest after transfer.
- The record shows whether the endpoint isolation step succeeded, failed or was rolled back.
Explanation
Correct Answer
C:This outcome is the direct verification of the approved action: Compute and record approved cryptographic digests for the source and each evidence copy with handling metadata. 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 recovery approval responsibility issue and the corrective action Require the designated service owner and security authority to approve restoration after objective validation. It cannot confirm the software deployment pipeline control. Required evidence for the current investigation is: The copied image hash matches its original reference digest after transfer.
B:This observation validates another threat actor confidence issue and the corrective action Keep observed tool and infrastructure indicators distinct from actor attribution and require independent corroboration. It cannot confirm the software deployment pipeline control. Required evidence for the current investigation is: The copied image hash matches its original reference digest after transfer.
D:This observation validates another soar playbook execution log issue and the corrective action Inspect SOAR job execution status and endpoint acknowledgment rather than treating initiation as completion. It cannot confirm the software deployment pipeline control. Required evidence for the current investigation is: The copied image hash matches its original reference digest after transfer.
Question 118
After the incident commander at the municipal cyber defense office applies this approved action — Normalize source timestamps to a common reference while retaining original timezone and clock-skew context. — the original issue is revisited: Windows endpoint events and Linux proxy logs use different timezone offsets, making a benign preceding action appear to follow an exploit. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The evidence manifest records approved cryptographic hashes and validates the same content after transfer.
- The event sequence aligns correctly across both logs and preserves original timestamps for audit.
- The test correctly attributes ICMP Time Exceeded to routing rather than the remote application's service status.
- A harmless oversized field is rejected and the service no longer crashes in controlled regression testing.
Explanation
Correct Answer
B:This outcome is the direct verification of the approved action: Normalize source timestamps to a common reference while retaining original timezone and clock-skew context. 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 endpoint hash collision assumption issue and the corrective action Use a collision-resistant digest appropriate to the integrity requirement and document the algorithm and handling procedures. It cannot confirm the municipal cyber defense office control. Required evidence for the current investigation is: The event sequence aligns correctly across both logs and preserves original timestamps for audit.
C:This observation validates another ipv4 ttl expiration issue and the corrective action Explain the hop-limit expiry from the IPv4 header and trace the route independently of application-level responses. It cannot confirm the municipal cyber defense office control. Required evidence for the current investigation is: The event sequence aligns correctly across both logs and preserves original timestamps for audit.
D:This observation validates another buffer overrun symptoms issue and the corrective action Validate bounds handling and deploy a tested supported patch for the affected parser, retaining crash evidence. It cannot confirm the municipal cyber defense office control. Required evidence for the current investigation is: The event sequence aligns correctly across both logs and preserves original timestamps for audit.
Question 119
After the network protocol analyst at the national utility network service applies this approved action — Define practical exercise cadence, acceptance checks and plan improvement based on measured test results. — the original issue is revisited: A response plan is considered complete after approval but no one has rehearsed evidence capture or system restoration. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The timeline records when the incident was detected and why the evidence met investigation thresholds.
- The authorized jump host connects while a guest-VLAN test source is refused and logged.
- A controlled tabletop and technical drill produces documented gaps, owners and retest dates.
- The written conclusion distinguishes suspected credential theft from proven access and cites corroboration gaps.
Explanation
Correct Answer
C:This outcome is the direct verification of the approved action: Define practical exercise cadence, acceptance checks and plan improvement based on measured test results. 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 detection and analysis classification issue and the corrective action Treat the event correlation and evidence assessment as detection-and-analysis activities. It cannot confirm the national utility network service control. Required evidence for the current investigation is: A controlled tabletop and technical drill produces documented gaps, owners and retest dates.
B:This observation validates another host firewall inbound application issue and the corrective action Limit the host firewall rule to the jump-host source and expected management port with auditing enabled. It cannot confirm the national utility network service control. Required evidence for the current investigation is: A controlled tabletop and technical drill produces documented gaps, owners and retest dates.
D:This observation validates another indirect behavioral inference issue and the corrective action Label the network indicator as circumstantial until direct authentication or credential-access evidence is collected. It cannot confirm the national utility network service control. Required evidence for the current investigation is: A controlled tabletop and technical drill produces documented gaps, owners and retest dates.
Question 120
During privilege recertification, the regional disaster recovery network reports this evidence to a host incident responder: A SOC discovers that a report bucket allows anonymous reads even though its data has not been altered and the application stays available. The reviewer must distinguish the observable weakness from actor identity and unsupported assumptions. The SOC will compare pre- and postchange event fields under the same source, sensor and collection permissions. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Enforce mandatory access controls using central sensitivity labels and clearance rules that owners cannot override.
- Normalize source timestamps to a common reference while retaining original timezone and clock-skew context.
- Correlate DNS response history, timestamps, TTL and network flows rather than using a current lookup retroactively.
- Restrict anonymous read access using scoped identities and validate the private storage policy before resuming report access.
Explanation
Correct Answer
D:This action addresses the confidentiality of customer exports issue in the regional disaster recovery network, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: An unauthenticated request is denied and an approved report-reader retrieves the unchanged file normally. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different mandatory classification issue, such as: A highly classified document remains accessible because its owner added an external user despite a compulsory information label. It does not address the specific failure reported by the regional disaster recovery network. The decisive acceptance condition for this case is: An unauthenticated request is denied and an approved report-reader retrieves the unchanged file normally.
B:That action belongs to a different log timestamp normalization issue, such as: Windows endpoint events and Linux proxy logs use different timezone offsets, making a benign preceding action appear to follow an exploit. It does not address the specific failure reported by the regional disaster recovery network. The decisive acceptance condition for this case is: An unauthenticated request is denied and an approved report-reader retrieves the unchanged file normally.
C:That action belongs to a different hostname and ip pivoting issue, such as: A DNS query resolves to a rapidly changing address and the SOC attributes all historical traffic to the currently returned IP. It does not address the specific failure reported by the regional disaster recovery network. The decisive acceptance condition for this case is: An unauthenticated request is denied and an approved report-reader retrieves the unchanged file normally.