Understanding Cisco Cybersecurity Operations Fundamentals (CBROPS) 200-201 Practice Test 40
Question 390
After the SOC automation specialist at the telecom customer identity platform applies this approved action — Maintain separately restricted immutable or offline recovery copies in addition to endpoint and network anti-malware defenses. — the original issue is revisited: A ransomware recovery design stores its only backup under the same administrator account and mutable production network share. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- A simulated compromised production admin cannot alter the recovery copy and a test restore succeeds.
- A signed-in read-only identity cannot perform the administrative action and its attempt is recorded.
- Inline policy drops the test flow while passive sensor only records it and cannot disrupt the connection.
- The exposed service is patched in the approved urgent window without compromising the unaffected application tier.
Explanation
Correct Answer
A:This outcome is the direct verification of the approved action: Maintain separately restricted immutable or offline recovery copies in addition to endpoint and network anti-malware defenses. 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 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 telecom customer identity platform control. Required evidence for the current investigation is: A simulated compromised production admin cannot alter the recovery copy and a test restore succeeds.
C:This observation validates another application ips placement issue and the corrective action Distinguish enforcement-capable inline IPS placement from passive out-of-band IDS monitoring. It cannot confirm the telecom customer identity platform control. Required evidence for the current investigation is: A simulated compromised production admin cannot alter the recovery copy and a test restore succeeds.
D:This observation validates another patch management priorities issue and the corrective action Prioritize by exploit evidence, criticality, internet exposure and tested deployment/rollback dependencies. It cannot confirm the telecom customer identity platform control. Required evidence for the current investigation is: A simulated compromised production admin cannot alter the recovery copy and a test restore succeeds.
Question 391
After the network detection engineer at the public-sector records application applies this approved action — Update the data-flow threat model and document a control for the identity callback's authentication and replay boundaries. — the original issue is revisited: A new application adds an external identity callback but developers deploy without evaluating the new trust boundary and spoofing paths. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- Bidirectional test sessions can be reconstructed or the missing direction is explicitly identified.
- The review documents the vulnerable dependency and its verified network boundary independently.
- Review shows the callback trust boundary, relevant threat scenario and passing negative replay test.
- The analyst reconstructs the failed sign-ins with correct identities and event ordering.
Explanation
Correct Answer
C:This outcome is the direct verification of the approved action: Update the data-flow threat model and document a control for the identity callback's authentication and replay boundaries. 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 asymmetric sensor placement issue and the corrective action Map both directional paths and adjust approved monitoring locations or correlate complementary sensors. It cannot confirm the public-sector records application control. Required evidence for the current investigation is: Review shows the callback trust boundary, relevant threat scenario and passing negative replay test.
B:This observation validates another vulnerability without exposure issue and the corrective action Validate the affected component and actual exposure path before assigning its risk priority. It cannot confirm the public-sector records application control. Required evidence for the current investigation is: Review shows the callback trust boundary, relevant threat scenario and passing negative replay test.
D:This observation validates another windows event log channels issue and the corrective action Correlate Windows Security logon events with account, logon type, source system and timestamp. It cannot confirm the public-sector records application control. Required evidence for the current investigation is: Review shows the callback trust boundary, relevant threat scenario and passing negative replay test.
Question 392
After the security monitoring architect at the healthcare privacy monitoring desk applies this approved action — Classify the observed non-alert for verified benign traffic as a true negative. — the original issue is revisited: A known benign control session passes through detection with no alert and the analyst incorrectly reports a detection failure. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The report pairs a clean control session with the correctly absent alert.
- The analyst distinguishes successful A/AAAA responses from NXDOMAIN errors with timestamped evidence.
- The command is permitted during the approved shift and denied immediately after expiry.
- The incident report links the failure to the diagnosed kernel component with corroborating crash artifacts.
Explanation
Correct Answer
A:This outcome is the direct verification of the approved action: Classify the observed non-alert for verified benign traffic as a true negative. 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 dns response significance issue and the corrective action Read DNS response codes and answer records with the query ID and authoritative context. It cannot confirm the healthcare privacy monitoring desk control. Required evidence for the current investigation is: The report pairs a clean control session with the correctly absent alert.
C:This observation validates another time-based authorization issue and the corrective action Apply a time-bounded rule or just-in-time authorization and log the approved maintenance interval. It cannot confirm the healthcare privacy monitoring desk control. Required evidence for the current investigation is: The report pairs a clean control session with the correctly absent alert.
D:This observation validates another os kernel and user mode issue and the corrective action Review kernel crash or driver evidence separately from user-mode application events before assigning root cause. It cannot confirm the healthcare privacy monitoring desk control. Required evidence for the current investigation is: The report pairs a clean control session with the correctly absent alert.
Question 393
The financial services API detects an exception during change-controlled validation; its security monitoring architect confirms: Analysts need to inspect a plaintext test DNS transaction, but collect only NetFlow records and expect to see the query body. Assess the observation source and its coverage limitations before assigning malicious intent. The acceptance test includes a permitted operation and an explicitly disallowed operation, with both verdicts recorded. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Aggregate permitted peer-to-peer connection metadata and correlate it with authorized application inventory.
- Correlate Windows Security logon events with account, logon type, source system and timestamp.
- Collect a consented limited packet capture at the eligible network interface for the specific transaction.
- Apply a time-bounded rule or just-in-time authorization and log the approved maintenance interval.
Explanation
Correct Answer
C:This action addresses the tcpdump payload capture issue in the financial services API, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The packet record includes the DNS query and response while collection excludes unrelated tenants. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A: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: The packet record includes the DNS query and response while collection excludes unrelated tenants.
B: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 financial services API. The decisive acceptance condition for this case is: The packet record includes the DNS query and response while collection excludes unrelated tenants.
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 financial services API. The decisive acceptance condition for this case is: The packet record includes the DNS query and response while collection excludes unrelated tenants.
Question 394
The retail fraud response desk detects an exception during monitoring baseline revision; its security monitoring architect confirms: A container image is scanned as clean but its production pod runs privileged with a writable host filesystem mount. Keep least privilege and approval boundaries intact while testing the security decision. Only a narrowly authorized test client and harmless indicator can be used for live validation. Which targeted defensive analysis or remediation action most directly addresses the stated failure while honoring the constraints?
- Evaluate exploit preconditions independent of program length and justify the attack-complexity setting.
- Aggregate query outcome ratios in short windows and compare to same-service historical baselines.
- Enforce runtime container least privilege and admission controls instead of treating image scanning as complete runtime security.
- Identify encapsulation boundaries and obtain permitted endpoint or decapsulated observation where available.
Explanation
Correct Answer
C:This action addresses the container security context issue in the retail fraud response desk, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The unsafe pod configuration is rejected while a minimally privileged workload starts normally. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different cvss attack complexity issue, such as: A vulnerability requires a rare race condition but the scorer marks it as low complexity because the exploit code is short. It does not address the specific failure reported by the retail fraud response desk. The decisive acceptance condition for this case is: The unsafe pod configuration is rejected while a minimally privileged workload starts normally.
B:That action belongs to a different statistical anomaly aggregation issue, such as: A sudden spike in outbound DNS NXDOMAIN answers is hidden by normal daily query volume on a busy resolver. It does not address the specific failure reported by the retail fraud response desk. The decisive acceptance condition for this case is: The unsafe pod configuration is rejected while a minimally privileged workload starts normally.
D: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 retail fraud response desk. The decisive acceptance condition for this case is: The unsafe pod configuration is rejected while a minimally privileged workload starts normally.
Question 395
After the forensic evidence custodian at the city-service billing platform applies this approved action — Conduct a postincident review and assign specific corrective actions with owners and due dates. — the original issue is revisited: After an incident closes, the same alert-triage delay repeats because no one records gaps or updates the runbook. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- Postchange comparison matches the approved rules and an unauthorized deviation produces an alert.
- The revised runbook addresses the prior delay and a follow-up exercise measures improvement.
- The report correctly identifies the datagram conversation without inventing a three-way handshake.
- Each tenant decrypts only its own archive and key custody is auditable.
Explanation
Correct Answer
B:This outcome is the direct verification of the approved action: Conduct a postincident review and assign specific corrective actions with owners and due dates. 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 forensic evidence custodian at the city-service billing platform applies this approved action — Conduct a postincident review and assign specific corrective actions with owners and due dates. — the original issue is revisited: After an incident closes, the….
Incorrect Answers
A:This observation validates another configuration baseline drift issue and the corrective action Detect and document configuration drift and apply the authorized baseline correction with tested rollback. It cannot confirm the city-service billing platform control. Required evidence for the current investigation is: The revised runbook addresses the prior delay and a follow-up exercise measures improvement.
C:This observation validates another protocol inference from headers issue and the corrective action Read the IP protocol and transport headers before labeling a conversation as UDP or TCP. It cannot confirm the city-service billing platform control. Required evidence for the current investigation is: The revised runbook addresses the prior delay and a follow-up exercise measures improvement.
D:This observation validates another symmetric encryption key separation issue and the corrective action Use independently managed symmetric content keys with approved asymmetric wrapping or secure key distribution where required. It cannot confirm the city-service billing platform control. Required evidence for the current investigation is: The revised runbook addresses the prior delay and a follow-up exercise measures improvement.
Question 396
After the identity monitoring analyst at the industrial safety monitoring enclave applies this approved action — Read the IP protocol and transport headers before labeling a conversation as UDP or TCP. — the original issue is revisited: A capture shows UDP destination 53, but an incident report incorrectly asserts that a TCP session was established. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The test correctly attributes ICMP Time Exceeded to routing rather than the remote application's service status.
- The report correctly identifies the datagram conversation without inventing a three-way handshake.
- The report identifies connection metadata and labels payload contents unknown without validated endpoint evidence.
- The attempted outbound activity is recorded without reaching the real production identity service.
Explanation
Correct Answer
B:This outcome is the direct verification of the approved action: Read the IP protocol and transport headers before labeling a conversation as UDP or TCP. 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 identity monitoring analyst at the industrial safety monitoring enclave applies this approved action — Read the IP protocol and transport headers before labeling a conversation as UDP or TCP. — the original issue is revisited: A capture shows UDP destination….
Incorrect Answers
A: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 industrial safety monitoring enclave control. Required evidence for the current investigation is: The report correctly identifies the datagram conversation without inventing a three-way handshake.
C:This observation validates another encrypted payload blind spot issue and the corrective action Correlate authorized endpoint and server telemetry with TLS metadata rather than claiming encrypted payload visibility. It cannot confirm the industrial safety monitoring enclave control. Required evidence for the current investigation is: The report correctly identifies the datagram conversation without inventing a three-way handshake.
D:This observation validates another sandbox network containment issue and the corrective action Restrict simulation egress to approved controlled sinks and preserve attempted destination metadata. It cannot confirm the industrial safety monitoring enclave control. Required evidence for the current investigation is: The report correctly identifies the datagram conversation without inventing a three-way handshake.
Question 397
During endpoint isolation rehearsal, the online enrollment service reports this evidence to a SOC investigation lead: A validated controlled malicious network pattern passes the sensor without any alert, despite the signature policy supposedly covering it. The validation may use only authorized test traffic and must preserve source-direction evidence. The SOC will compare pre- and postchange event fields under the same source, sensor and collection permissions. 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?
- Anchor the expression to the beginning of the relevant field and test against normal and failing events.
- Map identity provider event outcomes and failure reasons into consistent SIEM logon categories.
- Store private-key PKCS bundles in an encrypted secret store with restricted process access and publish only approved public certificate material.
- Record the missed detected-condition as a false negative and review sensor placement and rule coverage.
Explanation
Correct Answer
D:This action addresses the false negative classification issue in the online enrollment service, matching the observed mechanism rather than a different threat or tool. The acceptance test must demonstrate: The quality report documents the missed positive and retesting produces the intended detection. The relevant least-privilege and evidence-custody boundaries remain enforced.
Incorrect Answers
A:That action belongs to a different regex anchors issue, such as: A log rule meant to match lines starting with FAIL matches benign text with the word elsewhere in a longer line. It does not address the specific failure reported by the online enrollment service. The decisive acceptance condition for this case is: The quality report documents the missed positive and retesting produces the intended detection.
B:That action belongs to a different authentication status codes issue, such as: A sign-in dashboard counts successful and failed logins as identical because its normalized event mapping omits outcome fields. It does not address the specific failure reported by the online enrollment service. The decisive acceptance condition for this case is: The quality report documents the missed positive and retesting produces the intended detection.
C:That action belongs to a different pkcs key storage issue, such as: A P12 identity bundle containing a private key is placed in an unrestricted web directory as if it were a public certificate. It does not address the specific failure reported by the online enrollment service. The decisive acceptance condition for this case is: The quality report documents the missed positive and retesting produces the intended detection.
Question 398
After the network protocol analyst at the city-service billing platform applies this approved action — Correlate load balancer request IDs and trusted forwarded-client fields with backend and edge logs. — the original issue is revisited: A backend server sees only the proxy address in every request and the SOC labels the proxy as the abusive end user. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The test encrypted attachment receives the policy verdict instead of a false clean status.
- A test request maps to its true originating client while untrusted spoofed forwarding headers are rejected.
- An unauthorized log reader cannot see patient records and approved clinical audit events remain usable.
- 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: Correlate load balancer request IDs and trusted forwarded-client fields with backend and edge logs. 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 network protocol analyst at the city-service billing platform applies this approved action — Correlate load balancer request IDs and trusted forwarded-client fields with backend and edge logs. — the original issue is revisited: A backend server sees only the….
Incorrect Answers
A:This observation validates another encrypted archive evasion issue and the corrective action Apply policy-based handling for encrypted attachments and permitted sandbox or user verification procedures. It cannot confirm the city-service billing platform control. Required evidence for the current investigation is: A test request maps to its true originating client while untrusted spoofed forwarding headers are rejected.
C:This observation validates another protected health data issue and the corrective action Treat identified clinical information as protected health data and route it to compliant restricted processing. It cannot confirm the city-service billing platform control. Required evidence for the current investigation is: A test request maps to its true originating client while untrusted spoofed forwarding headers are rejected.
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 city-service billing platform control. Required evidence for the current investigation is: A test request maps to its true originating client while untrusted spoofed forwarding headers are rejected.
Question 399
After the tier-1 security analyst at the global streaming delivery platform applies this approved action — Track temporal exploit maturity and remediation information separately from intrinsic base-impact characteristics. — the original issue is revisited: A proof-of-concept exploit and effective vendor mitigation change over time but the report leaves all scoring context frozen as base-only. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- A test alert isolates only the implicated simulated identity and records the approval and rollback path.
- The reconstructed object matches the approved file signature and full expected digest.
- The updated assessment records available exploit maturity and remediation status without rewriting the base definition.
- The approved investigator can retrieve the file while unrelated ticket readers cannot.
Explanation
Correct Answer
C:This outcome is the direct verification of the approved action: Track temporal exploit maturity and remediation information separately from intrinsic base-impact characteristics. 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 runbook automation guardrails issue and the corrective action Require scoped identity correlation, human review where warranted, and a reversible action boundary in the containment runbook. It cannot confirm the global streaming delivery platform control. Required evidence for the current investigation is: The updated assessment records available exploit maturity and remediation status without rewriting the base definition.
B:This observation validates another http file reconstruction issue and the corrective action Follow and reassemble the complete TCP stream before exporting the authorized HTTP object. It cannot confirm the global streaming delivery platform control. Required evidence for the current investigation is: The updated assessment records available exploit maturity and remediation status without rewriting the base definition.
D:This observation validates another intellectual property leakage issue and the corrective action Classify the archive as protected intellectual property and use authorized restricted evidence storage. It cannot confirm the global streaming delivery platform control. Required evidence for the current investigation is: The updated assessment records available exploit maturity and remediation status without rewriting the base definition.
Question 400
After the SOC investigation lead at the regional datacenter operations applies this approved action — Aggregate permitted peer-to-peer connection metadata and correlate it with authorized application inventory. — the original issue is revisited: An endpoint makes hundreds of short connections to changing external peers, but a single-destination firewall rule misses the aggregate pattern. Which measured result is the strongest evidence that this specific control or investigation objective has been met?
- The telemetry shows abnormal incomplete handshakes and the mitigation preserves ordinary connections.
- A forensic scan locates the indicator on the affected host without flagging every HTTPS connection.
- The analysis reports flow volume and endpoints without asserting unseen application messages.
- The investigation identifies the unapproved distributed transfer pattern despite changing destinations.
Explanation
Correct Answer
D:This outcome is the direct verification of the approved action: Aggregate permitted peer-to-peer connection metadata and correlate it with authorized application inventory. 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 investigation lead at the regional datacenter operations applies this approved action — Aggregate permitted peer-to-peer connection metadata and correlate it with authorized application inventory. — the original issue is revisited: An endpoint makes….
Incorrect Answers
A:This observation validates another tcp syn flood indicators issue and the corrective action Correlate SYN/SYN-ACK completion, source dispersion and edge resource metrics to classify a suspected SYN flood. It cannot confirm the regional datacenter operations control. Required evidence for the current investigation is: The investigation identifies the unapproved distributed transfer pattern despite changing destinations.
B: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 regional datacenter operations control. Required evidence for the current investigation is: The investigation identifies the unapproved distributed transfer pattern despite changing destinations.
C:This observation validates another netflow telemetry identity issue and the corrective action Classify the record as flow/transaction summary telemetry and preserve limits on missing payload visibility. It cannot confirm the regional datacenter operations control. Required evidence for the current investigation is: The investigation identifies the unapproved distributed transfer pattern despite changing destinations.