Cisco 350-201 Practice Test 52
Question 510
For an original CBRCOR educational scenario, consider: A laptop packet capture shows no traffic to a suspicious DNS server because the sensor was placed outside the actual VLAN path. Select TWO complementary steps: the targeted correction and its strongest prechange validation.
- Check: Verify version and signature, simulate recovery, monitor service health and measure residual vulnerability before fleet-wide promotion.
- Check: Compare capture location, SPAN or TAP paths, time sync, packet drops and available metadata for a test connection.
- Change: Build a SOAR sequence with source validation, enrichment, branching, approvals and documented rollback for consequential actions.
- Change: Choose flow, logs or packet capture based on required fields, sensor placement, sampling and encryption limitations.
- Claim that a five-tuple flow record contains decrypted application data and every packet on the enterprise network.
Explanation
Correct Answer
B:Flow records summarize connections while full capture can preserve protocol packets only where visibility and collection policy permit. Acceptance: The investigation states which observed fields are reliable and where encrypted or unsampled traffic remains unknown.
D:Flow records summarize connections while full capture can preserve protocol packets only where visibility and collection policy permit. Evidence: Compare capture location, SPAN or TAP paths, time sync, packet drops and available metadata for a test connection.
Incorrect Answers
A:Check: Verify version and signature, simulate recovery, monitor service health and measure residual vulnerability before fleet-wide promotion. Flow records summarize connections while full capture can preserve protocol packets only where visibility and collection policy permit.
C:This option addresses a different security operations topic (SOAR enrichment before containment) rather than the documented Network analysis capture and visibility limits decision.
E:For this select two assessment, the shortcut changes or bypasses the necessary correctness, governance or operational boundary rather than correcting it. Flow records summarize connections while full capture can preserve protocol packets only where visibility and collection policy permit.
Question 511
A SOC analyst is examining this cybersecurity operations situation: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure. A proposed shortcut is: Interpret every retransmitted segment as a separate successful file upload regardless of transport acknowledgement. What should the SOC analyst recommend as the narrowly scoped correction? Select ONE best answer.
- Enforce explicit network-zone boundaries with least-privilege intersegment policies and monitor permitted application flows.
- Choose flow, logs or packet capture based on required fields, sensor placement, sampling and encryption limitations.
- Follow TCP handshake, sequence acknowledgments, stream reassembly and retransmission context before inferring application behavior.
- Interpret every retransmitted segment as a separate successful file upload regardless of transport acknowledgement.
Explanation
Correct Answer
C:This targeted action addresses the observed security or operational control gap without discarding necessary controls. Applied case: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure.
Incorrect Answers
A:Enforce explicit network-zone boundaries with least-privilege intersegment policies and monitor permitted application flows. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
B:Choose flow, logs or packet capture based on required fields, sensor placement, sampling and encryption limitations. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
D:TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers. For this best change assessment, the shortcut changes or bypasses the necessary correctness, governance or operational boundary rather than correcting it.
Question 512
A Cisco cybersecurity incident response review finds: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure. The team proposes: Follow TCP handshake, sequence acknowledgments, stream reassembly and retransmission context before inferring application behavior. Which engineering principle most strongly supports the recommended response? Select ONE best answer.
- ATT&CK tactics describe adversary objectives whereas techniques describe methods; an observed sequence can span multiple tactic phases.
- CVSS severity alone does not express business risk or active exploitation; operational priority combines threat evidence and reachable impact.
- TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
- AI can prioritize likely relationships but indicator matching and attribution require independently corroborated evidence.
Explanation
Correct Answer
C:Demonstrable success requires: The diagnosis identifies actual transport failure or recovery without inventing completed application transactions. Applied case: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure.
Incorrect Answers
A:ATT&CK tactics describe adversary objectives whereas techniques describe methods; an observed sequence can span multiple tactic phases. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
B:CVSS severity alone does not express business risk or active exploitation; operational priority combines threat evidence and reachable impact. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
D:AI can prioritize likely relationships but indicator matching and attribution require independently corroborated evidence. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
Question 513
The SOC team has not yet approved changes. Current evidence indicates: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure. Which evidence best tests the technical diagnosis before approving a disruptive change? Select ONE best answer.
- Filter the five-tuple, follow the TCP stream and compare SYN, ACK, reset and retransmission patterns against timestamps.
- Correlate CISA KEV or vendor alerts, affected versions, external reachability, mitigation status and change constraints.
- Compare source image digest, package scan, approved baseline and a fresh deployment against the operational policy.
- Replay false-positive and true-positive events through enrichment outputs, human approval gates and cancellation paths.
Explanation
Correct Answer
A:Confirm afterward that: The diagnosis identifies actual transport failure or recovery without inventing completed application transactions. Applied case: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure.
Incorrect Answers
B:Correlate CISA KEV or vendor alerts, affected versions, external reachability, mitigation status and change constraints. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
C:Compare source image digest, package scan, approved baseline and a fresh deployment against the operational policy. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
D:Replay false-positive and true-positive events through enrichment outputs, human approval gates and cancellation paths. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
Question 514
A candidate correction has been tested and the platform team requires a post-change acceptance check. Original problem: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure. The response owner needs positive and negative results and evidence that legitimate security and business workflows still function. Which acceptance result demonstrates correct security operations behavior without disrupting authorized workflows? Select ONE best answer.
- Approved baseline settings reduce unnecessary exposure while documented required functions continue operating.
- Unnecessary listeners disappear and critical application dependencies and security management continue functioning.
- The diagnosis identifies actual transport failure or recovery without inventing completed application transactions.
- Escalated matches have a reproducible evidence trail and unconfirmed associations remain investigatory leads.
Explanation
Correct Answer
C:TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers. Applied case: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure.
Incorrect Answers
A:Approved baseline settings reduce unnecessary exposure while documented required functions continue operating. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
B:Unnecessary listeners disappear and critical application dependencies and security management continue functioning. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
D:Escalated matches have a reproducible evidence trail and unconfirmed associations remain investigatory leads. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
Question 515
An implementation sign-off request identifies the following problem: A packet trace contains SYN retries and no SYN-ACK for a blocked destination, but the analyst declares an application login failure. Which paired technical change and validation should close the implementation review? Select ONE best answer.
- Change: Apply cloud and application DLP policies to sharing permissions, sensitive-content detection and sanctioned app activity. Verify: Test public versus restricted sharing, sensitivity labels, audit events and approved exceptions in a representative SaaS workspace.
- Change: Prioritize remediation by exploit activity, exposure, asset criticality and compensating controls, with accelerated action for active exploitation. Verify: Correlate CISA KEV or vendor alerts, affected versions, external reachability, mitigation status and change constraints.
- Change: Map observed adversary behaviors to relevant ATT&CK tactics and techniques with evidence and avoid asserting unsupported attribution. Verify: Associate each event with observed operation, target, timestamp and independently justified tactic and technique mapping.
- Change: Follow TCP handshake, sequence acknowledgments, stream reassembly and retransmission context before inferring application behavior. Verify: Filter the five-tuple, follow the TCP stream and compare SYN, ACK, reset and retransmission patterns against timestamps.
Explanation
Correct Answer
D:The change is successful only when: The diagnosis identifies actual transport failure or recovery without inventing completed application transactions.
Incorrect Answers
A:Change: Apply cloud and application DLP policies to sharing permissions, sensitive-content detection and sanctioned app activity. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
B:Change: Prioritize remediation by exploit activity, exposure, asset criticality and compensating controls, with accelerated action for active exploitation. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
C:Change: Map observed adversary behaviors to relevant ATT&CK tactics and techniques with evidence and avoid asserting unsupported attribution. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
Question 516
A SOC analyst is examining this cybersecurity operations situation: A file download captures many TCP retransmissions on one WAN link and investigators misclassify all duplicate segments as repeated data exfiltration. A proposed shortcut is: Interpret every retransmitted segment as a separate successful file upload regardless of transport acknowledgement. What should the SOC analyst recommend as the narrowly scoped correction? Select ONE best answer.
- Follow TCP handshake, sequence acknowledgments, stream reassembly and retransmission context before inferring application behavior.
- Choose flow, logs or packet capture based on required fields, sensor placement, sampling and encryption limitations.
- Interpret every retransmitted segment as a separate successful file upload regardless of transport acknowledgement.
- Verify alert evidence and identity ownership, prioritize based on harmful follow-on actions and invoke approved credential containment when warranted.
Explanation
Correct Answer
A:This targeted action addresses the observed security or operational control gap without discarding necessary controls. The required acceptance condition is: The diagnosis identifies actual transport failure or recovery without inventing completed application transactions.
Incorrect Answers
B:Choose flow, logs or packet capture based on required fields, sensor placement, sampling and encryption limitations. A file download captures many TCP retransmissions on one WAN link and investigators misclassify all duplicate segments as repeated data exfiltration.
C:TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers. Use this instead: Follow TCP handshake, sequence acknowledgments, stream reassembly and retransmission context before inferring application behavior.
D:This option addresses a different security operations topic (User alert investigation next action) rather than the documented TCP stream and retransmission interpretation decision.
Question 517
A Cisco cybersecurity incident response review finds: A file download captures many TCP retransmissions on one WAN link and investigators misclassify all duplicate segments as repeated data exfiltration. The team proposes: Follow TCP handshake, sequence acknowledgments, stream reassembly and retransmission context before inferring application behavior. Which engineering principle most strongly supports the recommended response? Select ONE best answer.
- Asset posture depends on exposure, controls and observed state; the absence of an alert is not evidence of compliance.
- TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
- Predictive and generative models can accelerate triage but can produce false positives, missing context and unverifiable conclusions.
- Compensating controls can reduce a specific residual risk but do not eliminate the need to understand and govern the original deficiency.
Explanation
Correct Answer
B:Demonstrable success requires: The diagnosis identifies actual transport failure or recovery without inventing completed application transactions. This principle explains the proposed technical approach, which is: Follow TCP handshake, sequence acknowledgments, stream reassembly and retransmission context before inferring application behavior.
Incorrect Answers
A:This option addresses a different security operations topic (Asset posture inventory and exposure) rather than the documented TCP stream and retransmission interpretation decision.
C:Predictive and generative models can accelerate triage but can produce false positives, missing context and unverifiable conclusions. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
D:This option addresses a different security operations topic (Control exception validation and compensating safeguards) rather than the documented TCP stream and retransmission interpretation decision.
Question 518
The SOC team has not yet approved changes. Current evidence indicates: A file download captures many TCP retransmissions on one WAN link and investigators misclassify all duplicate segments as repeated data exfiltration. Which evidence best tests the technical diagnosis before approving a disruptive change? Select ONE best answer.
- Filter the five-tuple, follow the TCP stream and compare SYN, ACK, reset and retransmission patterns against timestamps.
- Test allowed admin hosts and denied guest sources for SSH, HTTPS, SNMP and relevant control-plane protections.
- Inspect indicator provenance, first-seen and last-seen fields, confidence thresholds and policy expiry in a dry-run.
- Compare raw sample events with normalized user, source IP, action, timestamp and device fields.
Explanation
Correct Answer
A:Confirm afterward that: The diagnosis identifies actual transport failure or recovery without inventing completed application transactions. Applied case: A file download captures many TCP retransmissions on one WAN link and investigators misclassify all duplicate segments as repeated data exfiltration.
Incorrect Answers
B:Test allowed admin hosts and denied guest sources for SSH, HTTPS, SNMP and relevant control-plane protections. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
C:Inspect indicator provenance, first-seen and last-seen fields, confidence thresholds and policy expiry in a dry-run. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
D:Compare raw sample events with normalized user, source IP, action, timestamp and device fields. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
Question 519
A candidate correction has been tested and the platform team requires a post-change acceptance check. Original problem: A file download captures many TCP retransmissions on one WAN link and investigators misclassify all duplicate segments as repeated data exfiltration. The response owner needs positive and negative results and evidence that legitimate security and business workflows still function. Which acceptance result demonstrates correct security operations behavior without disrupting authorized workflows? Select ONE best answer.
- The diagnosis identifies actual transport failure or recovery without inventing completed application transactions.
- Newly launched instances consistently meet the reviewed security baseline and can be traced to an approved image revision.
- Authorized applications communicate while untrusted devices cannot inherit unrestricted access merely from network proximity.
- Unauthorized paths are denied and each crucial control action leaves sufficient forensic evidence.
Explanation
Correct Answer
A:TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers. The result must be validated using the documented device, service or access context.
Incorrect Answers
B:Newly launched instances consistently meet the reviewed security baseline and can be traced to an approved image revision. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
C:Authorized applications communicate while untrusted devices cannot inherit unrestricted access merely from network proximity. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
D:Unauthorized paths are denied and each crucial control action leaves sufficient forensic evidence. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
Question 520
For an original CBRCOR educational scenario, consider: A file download captures many TCP retransmissions on one WAN link and investigators misclassify all duplicate segments as repeated data exfiltration. Select TWO complementary steps: the targeted correction and its strongest prechange validation.
- Check: Filter the five-tuple, follow the TCP stream and compare SYN, ACK, reset and retransmission patterns against timestamps.
- Interpret every retransmitted segment as a separate successful file upload regardless of transport acknowledgement.
- Check: Map service dependencies, evaluate permitted identity posture and test denied lateral flows and legitimate service paths.
- Change: Follow TCP handshake, sequence acknowledgments, stream reassembly and retransmission context before inferring application behavior.
- Change: Enforce explicit network-zone boundaries with least-privilege intersegment policies and monitor permitted application flows.
Explanation
Correct Answer
A:TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers. Acceptance: The diagnosis identifies actual transport failure or recovery without inventing completed application transactions.
D:TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers. Applied case: A file download captures many TCP retransmissions on one WAN link and investigators misclassify all duplicate segments as repeated data exfiltration.
Incorrect Answers
B:TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers. Distinguish the two approaches by checking: Filter the five-tuple, follow the TCP stream and compare SYN, ACK, reset and retransmission patterns against timestamps.
C:Check: Map service dependencies, evaluate permitted identity posture and test denied lateral flows and legitimate service paths. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
E:Change: Enforce explicit network-zone boundaries with least-privilege intersegment policies and monitor permitted application flows. TCP transport artifacts distinguish failed connectivity and loss from application-layer requests or multiple unique payload transfers.
