Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) 200-201 Practice Test 45
Question 440
An incident at the financial services API is escalated to a endpoint security engineer after privilege recertification reveals: A payment API allows obsolete TLS versions and the operations team measures only successful current-version clients. Correlate network records to the correct identity and time without revealing unrelated customers. Investigators must record which observation is directly measured and which conclusion remains only an inference. This alternate observation is collected from a second routed segment with different sensor coverage and timestamped NAT mappings; preserve raw flow direction and explicitly label whether application data or only transport metadata was available. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Enforce the supported minimum TLS protocol version with a deliberate compatibility and rollback test.
- Identify encapsulation boundaries and obtain permitted endpoint or decapsulated observation where available.
- Map the established socket to PID, process name, command line and user with authorized host telemetry.
- Interpret HTTP method, path and 401 status independently of network reachability.
Explanation
Correct Answer
A:This action addresses the tls version negotiation issue in the financial services API, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: A compliant TLS client connects while an obsolete-version-only test handshake is rejected. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
B:That action belongs to a different tunneled inner protocol issue, such as: A network monitor sees only outer GRE packets and assumes it can determine the encapsulated application without decoding an authorized tunnel. It does not address the specific failure reported by the financial services API. The decisive acceptance condition for this case is: A compliant TLS client connects while an obsolete-version-only test handshake is rejected.
C:That action belongs to a different linux process-to-network mapping issue, such as: A network connection is suspicious, but the analyst relies on its TCP port and ignores which local executable opened it. It does not address the specific failure reported by the financial services API. The decisive acceptance condition for this case is: A compliant TLS client connects while an obsolete-version-only test handshake is rejected.
D:That action belongs to a different http method and status issue, such as: An application log records POST /login returning 401, but the team treats it as evidence the user was authenticated because the server answered. It does not address the specific failure reported by the financial services API. The decisive acceptance condition for this case is: A compliant TLS client connects while an obsolete-version-only test handshake is rejected.
Question 441
A network protocol analyst at the financial services API investigates during weekly threat-hunting exercise: Two unrelated business tenants use the same shared encryption secret for bulk archives and assume that a public certificate replaces secret isolation. Keep packet collection within the approved scope and do not assume encrypted payloads are readable. 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?
- Use independently managed symmetric content keys with approved asymmetric wrapping or secure key distribution where required.
- Aggregate permitted peer-to-peer connection metadata and correlate it with authorized application inventory.
- Correlate authorized endpoint and server telemetry with TLS metadata rather than claiming encrypted payload visibility.
- Correlate and normalize events in the SIEM, then invoke an approved auditable SOAR playbook for the authorized containment step.
Explanation
Correct Answer
A:This action addresses the symmetric encryption key separation issue in the financial services API, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: Each tenant decrypts only its own archive and key custody is auditable. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
B:That action belongs to a different peer-to-peer transfer patterns issue, such as: An endpoint makes hundreds of short connections to changing external peers, but a single-destination firewall rule misses the aggregate pattern. It does not address the specific failure reported by the financial services API. The decisive acceptance condition for this case is: Each tenant decrypts only its own archive and key custody is auditable.
C: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 financial services API. The decisive acceptance condition for this case is: Each tenant decrypts only its own archive and key custody is auditable.
D:That action belongs to a different siem versus soar responsibilities issue, such as: A responder expects a log indexing rule to revoke a compromised user token automatically, without any response workflow or approval checkpoint. It does not address the specific failure reported by the financial services API. The decisive acceptance condition for this case is: Each tenant decrypts only its own archive and key custody is auditable.
Question 442
After the tier-1 security analyst at the online enrollment service applies this approved action — Map the event to the secure web proxy logs and correlate it with user authentication and request ID. — the original issue is revisited: The evidence includes URL category, authenticated user, requested host and explicit proxy policy disposition rather than a packet payload. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The report provides valid TLS metadata and does not invent recovered file content.
- A safe blocked URL is linked to the correct proxy decision and authenticated requesting user.
- Review shows the callback trust boundary, relevant threat scenario and passing negative replay test.
- No credential is entered at the imitation portal and the suspicious message is preserved for investigation.
Explanation
Correct Answer
B:This outcome is the direct verification of the approved action: Map the event to the secure web proxy logs and correlate it with user authentication and request ID. 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 tier-1 security analyst at the online enrollment service applies this approved action — Map the event to the secure web proxy logs and correlate it with user authentication and request ID. — the original issue is revisited: The evidence includes URL category,….
Incorrect Answers
A:This observation validates another https extraction limit issue and the corrective action Report that encrypted payload reconstruction is unavailable without lawful decryption context; use approved endpoint artifact instead. It cannot confirm the online enrollment service control. Required evidence for the current investigation is: A safe blocked URL is linked to the correct proxy decision and authenticated requesting user.
C:This observation validates another threat modeling boundaries issue and the corrective action Update the data-flow threat model and document a control for the identity callback's authentication and replay boundaries. It cannot confirm the online enrollment service control. Required evidence for the current investigation is: A safe blocked URL is linked to the correct proxy decision and authenticated requesting user.
D:This observation validates another credential phishing verification issue and the corrective action Verify the request through an established independent channel and report the lookalike login link under the phishing procedure. It cannot confirm the online enrollment service control. Required evidence for the current investigation is: A safe blocked URL is linked to the correct proxy decision and authenticated requesting user.
Question 443
After the SOC automation specialist at the identity federation production tenant applies this approved action — Calculate detection delay from the best-known incident onset to the detection timestamp while documenting uncertainty. — the original issue is revisited: The SOC compares incident creation time to remediation closure and labels that duration mean time to detect. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The evidence log contains a timestamped volatile-state capture and subsequent preserved disk evidence.
- The metric is labeled with its actual onset and detection times, not recovery completion.
- A signed-in read-only identity cannot perform the administrative action and its attempt is recorded.
- A confirmed matching indicator is escalated while uncorroborated stale addresses remain triaged for review.
Explanation
Correct Answer
B:This outcome is the direct verification of the approved action: Calculate detection delay from the best-known incident onset to the detection timestamp while documenting uncertainty. 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 volatile memory priority issue and the corrective action Evaluate safety and legal constraints, then capture priority volatile information before shutdown when feasible. It cannot confirm the identity federation production tenant control. Required evidence for the current investigation is: The metric is labeled with its actual onset and detection times, not recovery completion.
C:This observation validates another authentication authorization accounting issue and the corrective action Separate identity verification from privilege evaluation and retain tamper-resistant user action audit events. It cannot confirm the identity federation production tenant control. Required evidence for the current investigation is: The metric is labeled with its actual onset and detection times, not recovery completion.
D:This observation validates another threat intelligence relevance issue and the corrective action Enrich the indicators with confidence and observation context and prioritize matches to the organization's actual protected assets. It cannot confirm the identity federation production tenant control. Required evidence for the current investigation is: The metric is labeled with its actual onset and detection times, not recovery completion.
Question 444
After the tier-1 security analyst at the merchant checkout web service applies this approved action — Mark the defensive interruption at the observed stage and avoid assuming later unauthorized actions occurred. — the original issue is revisited: A safe simulated phishing attempt is blocked at mail delivery, but an analyst reports successful attacker objectives solely from initial reconnaissance. 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.
- Only events whose target field begins with the expected failure token match.
- The analyst separates the approved inventory command from suspicious invocation by its actual arguments.
- The report documents the successful filter and zero corroborated execution or exfiltration evidence.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Mark the defensive interruption at the observed stage and avoid assuming later unauthorized actions occurred. 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 merchant checkout web service control. Required evidence for the current investigation is: The report documents the successful filter and zero corroborated execution or exfiltration evidence.
B:This observation validates another regex anchors issue and the corrective action Anchor the expression to the beginning of the relevant field and test against normal and failing events. It cannot confirm the merchant checkout web service control. Required evidence for the current investigation is: The report documents the successful filter and zero corroborated execution or exfiltration evidence.
C:This observation validates another process command line evidence issue and the corrective action Retrieve permitted full command-line and parent-process telemetry with executing identity for that event. It cannot confirm the merchant checkout web service control. Required evidence for the current investigation is: The report documents the successful filter and zero corroborated execution or exfiltration evidence.
Question 445
During incident-response triage, the pharmaceutical analytics VPC reports this evidence to a SOC automation specialist: A Windows management service is accessible from a guest VLAN even though remote support must originate from a designated jump host. Retain endpoint process, user and timestamp context while limiting access to sensitive records. Two log sources use different time representations; the reviewer must preserve provenance when correlating them. The comparison host belongs to a separate managed endpoint policy group with different users and process ancestry; preserve the suspect host execution trail and avoid interpreting the second machine as proof of activity on the first. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Correlate Windows Security logon events with account, logon type, source system and timestamp.
- Verify the request through an established independent channel and report the lookalike login link under the phishing procedure.
- Deploy an approved endpoint detection agent capable of recording process lineage and command-line executions.
- Limit the host firewall rule to the jump-host source and expected management port with auditing enabled.
Explanation
Correct Answer
D:This action addresses the host firewall inbound application issue in the pharmaceutical analytics VPC, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The authorized jump host connects while a guest-VLAN test source is refused and logged. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different windows event log channels issue, such as: A SOC investigates repeated interactive sign-in failures using only generic application health logs and misses security audit events. It does not address the specific failure reported by the pharmaceutical analytics VPC. The decisive acceptance condition for this case is: The authorized jump host connects while a guest-VLAN test source is refused and logged.
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 pharmaceutical analytics VPC. The decisive acceptance condition for this case is: The authorized jump host connects while a guest-VLAN test source is refused and logged.
C:That action belongs to a different host edr placement issue, such as: A workstation executes suspicious PowerShell scripts but perimeter firewall events do not show the local process ancestry. It does not address the specific failure reported by the pharmaceutical analytics VPC. The decisive acceptance condition for this case is: The authorized jump host connects while a guest-VLAN test source is refused and logged.
Question 446
A identity monitoring analyst at the SaaS document synchronization tenant investigates during postincident evidence review: A packet capture crosses a router and the analyst assumes its frame destination MAC equals the remote internet application's MAC. Interpret the actual protocol evidence and avoid claiming absent payload or session state. The change team will retest the specific baseline failure without broad production scanning or unsafe payloads. The alternate packet sample contains a second legitimate conversation plus harmless transport retransmissions; isolate the investigated exchange using its precise tuple and direction, and do not treat an unrelated control connection as attack evidence. 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.
- Map external frontend, ephemeral client and internal backend ports in the application request chain.
- Prioritize by exploit evidence, criticality, internet exposure and tested deployment/rollback dependencies.
- Review task registration, executable path, owner and run history against approved task inventory.
Explanation
Correct Answer
A:This action addresses the ethernet mac roles issue in the SaaS document synchronization tenant, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The packet interpretation shows local gateway MAC at layer two and remote service IP at layer three. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
B:That action belongs to a different client/server port roles issue, such as: A reverse proxy accepts on TCP 8443 and forwards to TCP 8080, and the analyst claims both ports indicate identical client roles. It does not address the specific failure reported by the SaaS document synchronization tenant. The decisive acceptance condition for this case is: The packet interpretation shows local gateway MAC at layer two and remote service IP at layer three.
C:That action belongs to a different patch management priorities issue, such as: A critical internet-facing service has an available security patch, but a maintenance spreadsheet lists updates by oldest ticket date only. It does not address the specific failure reported by the SaaS document synchronization tenant. The decisive acceptance condition for this case is: The packet interpretation shows local gateway MAC at layer two and remote service IP at layer three.
D:That action belongs to a different scheduled task profile issue, such as: An endpoint runs an unknown scheduled task nightly and the team attributes its network uploads to ordinary user browser activity. It does not address the specific failure reported by the SaaS document synchronization tenant. The decisive acceptance condition for this case is: The packet interpretation shows local gateway MAC at layer two and remote service IP at layer three.
Question 447
After the tier-1 security analyst at the regional payments SOC applies this approved action — Use sanctioned application classification and control policy events for the prohibited application. — the original issue is revisited: A business policy prohibits a remote administration application but host firewall logs identify only generic TCP connections. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- Independently captured records align to one traceable incident timeline with auditable provenance.
- A bounded report identifies the abnormal byte-rate and its exact destination without relying on one sampled packet.
- A controlled test shows the parent process, command line and user identity for the script event.
- A controlled unauthorized application session is identified and blocked without preventing approved TLS business traffic.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Use sanctioned application classification and control policy events for the prohibited application. 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 metadata preservation issue and the corrective action Preserve log source identity, original timestamp, collection time, timezone and normalization fields. It cannot confirm the regional payments SOC control. Required evidence for the current investigation is: A controlled unauthorized application session is identified and blocked without preventing approved TLS business traffic.
B:This observation validates another network throughput baseline issue and the corrective action Compare source-specific throughput and destination volume to the approved interval baseline. It cannot confirm the regional payments SOC control. Required evidence for the current investigation is: A controlled unauthorized application session is identified and blocked without preventing approved TLS business traffic.
C:This observation validates another host edr placement issue and the corrective action Deploy an approved endpoint detection agent capable of recording process lineage and command-line executions. It cannot confirm the regional payments SOC control. Required evidence for the current investigation is: A controlled unauthorized application session is identified and blocked without preventing approved TLS business traffic.
Question 448
After the security monitoring architect at the municipal cyber defense office applies this approved action — Aggregate transfers by client and destination over time and correlate process ancestry with authorized data-export policy. — the original issue is revisited: A workstation sends repeated small encrypted POST requests to an unapproved domain and the team dismisses them because individual packets are tiny. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The score captures the requirement for a user action rather than an unattended exploit.
- The repeated rejected logins are attributed to the right remote source and service.
- The investigation identifies the unapproved distributed transfer pattern despite changing destinations.
- The combined profile exposes the unusual cumulative transfer and links it to the originating process.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Aggregate transfers by client and destination over time and correlate process ancestry with authorized data-export policy. 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 user interaction issue and the corrective action Mark user interaction according to the necessary victim action and document the observed click or open trigger. It cannot confirm the municipal cyber defense office control. Required evidence for the current investigation is: The combined profile exposes the unusual cumulative transfer and links it to the originating process.
B: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 municipal cyber defense office control. Required evidence for the current investigation is: The combined profile exposes the unusual cumulative transfer and links it to the originating process.
C:This observation validates another peer-to-peer transfer patterns issue and the corrective action Aggregate permitted peer-to-peer connection metadata and correlate it with authorized application inventory. It cannot confirm the municipal cyber defense office control. Required evidence for the current investigation is: The combined profile exposes the unusual cumulative transfer and links it to the originating process.
Question 449
After the cloud audit engineer at the warehouse IoT segment applies this approved action — Preserve the authorized full-packet test session and reconstruct the transaction with sensitive-content controls. — the original issue is revisited: Two parties dispute whether a test HTTP response contained a confidential string, while the analyst only has byte counters. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The investigation distinguishes the unapproved periodic client from legitimate scheduled update traffic.
- The case clearly records observed malware behavior and an appropriately qualified actor hypothesis.
- A confirmed matching indicator is escalated while uncorroborated stale addresses remain triaged for review.
- The reconstructed consented response proves the relevant field state with timestamps and packet provenance.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Preserve the authorized full-packet test session and reconstruct the transaction with sensitive-content controls. 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 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 warehouse IoT segment control. Required evidence for the current investigation is: The reconstructed consented response proves the relevant field state with timestamps and packet provenance.
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 warehouse IoT segment control. Required evidence for the current investigation is: The reconstructed consented response proves the relevant field state with timestamps and packet provenance.
C:This observation validates another threat intelligence relevance issue and the corrective action Enrich the indicators with confidence and observation context and prioritize matches to the organization's actual protected assets. It cannot confirm the warehouse IoT segment control. Required evidence for the current investigation is: The reconstructed consented response proves the relevant field state with timestamps and packet provenance.
Question 450
After the endpoint security engineer at the container runtime security platform applies this approved action — Map the established socket to PID, process name, command line and user with authorized host telemetry. — the original issue is revisited: A network connection is suspicious, but the analyst relies on its TCP port and ignores which local executable opened it. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- A forensic scan locates the indicator on the affected host without flagging every HTTPS connection.
- The scoring record identifies network reachability without falsely requiring local or physical presence.
- The investigation identifies the unapproved distributed transfer pattern despite changing destinations.
- The suspicious connection is linked to a specific originating process and authenticated user.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Map the established socket to PID, process name, command line and user with authorized host telemetry. 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 indicators of compromise issue and the corrective action Record verified host-based IoCs with source, time, confidence and relevant detection use. It cannot confirm the container runtime security platform control. Required evidence for the current investigation is: The suspicious connection is linked to a specific originating process and authenticated user.
B:This observation validates another cvss attack vector issue and the corrective action Select the attack-vector metric that matches reachable remote network exploitation, with evidence from the exposed endpoint. It cannot confirm the container runtime security platform control. Required evidence for the current investigation is: The suspicious connection is linked to a specific originating process and authenticated user.
C:This observation validates another peer-to-peer transfer patterns issue and the corrective action Aggregate permitted peer-to-peer connection metadata and correlate it with authorized application inventory. It cannot confirm the container runtime security platform control. Required evidence for the current investigation is: The suspicious connection is linked to a specific originating process and authenticated user.