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Cisco 350-201 Practice Test 80

Question 790

For an original CBRCOR educational scenario, consider: Investigators see an unfamiliar outbound address and classify it as a confirmed attack without checking whether the service is sanctioned. Select TWO complementary steps: the targeted correction and its strongest prechange validation.

  1. Check: Compare repeated sandbox runs, host artifacts, DNS requests and source-event timestamps under controlled isolation.
  2. Change: Combine concrete compromise artifacts with behavior-based attack indicators and context, separating match strength from proof of intrusion.
  3. Check: Compare hash, DNS, process behavior, privileged changes and threat intelligence freshness against known benign conditions.
  4. Treat any unknown IP address as indisputable proof of a completed compromise.
  5. Change: Examine strings, imports, sections and packing indicators in an isolated static-analysis workflow while avoiding unsupported behavior claims.

Explanation

Correct Answer

B:

IOCs identify specific observable artifacts while IOAs characterize suspicious actions or sequences that may survive simple artifact changes. Evidence: Compare hash, DNS, process behavior, privileged changes and threat intelligence freshness against known benign conditions.

C:

IOCs identify specific observable artifacts while IOAs characterize suspicious actions or sequences that may survive simple artifact changes. Compare hash, DNS, process behavior, privileged changes and threat intelligence freshness against known benign conditions.

Incorrect Answers

A:

Check: Compare repeated sandbox runs, host artifacts, DNS requests and source-event timestamps under controlled isolation. IOCs identify specific observable artifacts while IOAs characterize suspicious actions or sequences that may survive simple artifact changes.

D:

For this select two assessment, the shortcut changes or bypasses the necessary correctness, governance or operational boundary rather than correcting it. IOCs identify specific observable artifacts while IOAs characterize suspicious actions or sequences that may survive simple artifact changes.

E:

This option addresses a different security operations topic (Malware strings and import-table analysis) rather than the documented IOC versus behavioral IOA interpretation decision.

Question 791

A SOC analyst is examining this cybersecurity operations situation: A SOC blocks a shared cloud CDN address forever because it once appeared in a malware report, disrupting thousands of customers. A proposed shortcut is: Convert every historical indicator into a permanent network-wide denial with no context review. What should the SOC analyst recommend as the narrowly scoped correction? Select ONE best answer.

  1. Attach confidence, source, first-seen and last-seen details and scope actions to contextual indicators with review or expiry.
  2. Challenge trust assumptions with realistic attacker access and validate claimed controls at actual enforcement points.
  3. Convert every historical indicator into a permanent network-wide denial with no context review.
  4. Isolate as warranted and collect process lineage, persistence, file artifacts, endpoint health and identity events under approved procedures.

Explanation

Correct Answer

A:

This targeted action addresses the observed security or operational control gap without discarding necessary controls. Applied case: A SOC blocks a shared cloud CDN address forever because it once appeared in a malware report, disrupting thousands of customers.

Incorrect Answers

B:

Challenge trust assumptions with realistic attacker access and validate claimed controls at actual enforcement points. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

C:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. For this best change assessment, the shortcut changes or bypasses the necessary correctness, governance or operational boundary rather than correcting it.

D:

Isolate as warranted and collect process lineage, persistence, file artifacts, endpoint health and identity events under approved procedures. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 792

A Cisco cybersecurity incident response review finds: A SOC blocks a shared cloud CDN address forever because it once appeared in a malware report, disrupting thousands of customers. The team proposes: Attach confidence, source, first-seen and last-seen details and scope actions to contextual indicators with review or expiry. Which engineering principle most strongly supports the recommended response? Select ONE best answer.

  1. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.
  2. Threat models connect assets, actors, entry points and boundaries to plausible failure or abuse scenarios rather than treating all components equally.
  3. Mobile intrusion visibility differs from desktop EDR; configuration profiles and identity compromise can reveal abuse when full host artifacts are unavailable.
  4. Complex signatures need both malicious coverage and false-positive evaluation before production deployment.

Explanation

Correct Answer

A:

Demonstrable success requires: High-confidence indicators drive targeted controls with low collateral impact and stale entries are retired. Applied case: A SOC blocks a shared cloud CDN address forever because it once appeared in a malware report, disrupting thousands of customers.

Incorrect Answers

B:

Threat models connect assets, actors, entry points and boundaries to plausible failure or abuse scenarios rather than treating all components equally. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

C:

This option addresses a different security operations topic (Mobile device compromise indicators) rather than the documented IOC confidence, expiration and false associations decision.

D:

Complex signatures need both malicious coverage and false-positive evaluation before production deployment. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 793

The SOC team has not yet approved changes. Current evidence indicates: A SOC blocks a shared cloud CDN address forever because it once appeared in a malware report, disrupting thousands of customers. Which evidence best tests the technical diagnosis before approving a disruptive change? Select ONE best answer.

  1. Review token validation, authorization decisions and service account grants for negative identity and permission tests.
  2. Check current resolution, hosting, traffic, original report and benign shared-service use before enforcing broad blocking.
  3. Replay representative benign installer traces and malicious test artifacts and compare true and false matches.
  4. Examine timestamped process lineage, created artifacts and relevant configuration changes from the sandbox telemetry.

Explanation

Correct Answer

B:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. Applied case: A SOC blocks a shared cloud CDN address forever because it once appeared in a malware report, disrupting thousands of customers.

Incorrect Answers

A:

Review token validation, authorization decisions and service account grants for negative identity and permission tests. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

C:

Replay representative benign installer traces and malicious test artifacts and compare true and false matches. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

D:

Examine timestamped process lineage, created artifacts and relevant configuration changes from the sandbox telemetry. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 794

A candidate correction has been tested and the platform team requires a post-change acceptance check. Original problem: A SOC blocks a shared cloud CDN address forever because it once appeared in a malware report, disrupting thousands of customers. 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.

  1. High-confidence indicators drive targeted controls with low collateral impact and stale entries are retired.
  2. The case states supported similarity with confidence levels and avoids unsupported named-actor attribution.
  3. The analysis captures linked behavior and preserves artifacts needed for follow-up detection engineering.
  4. The report distinguishes observed static facts from hypotheses requiring controlled dynamic confirmation.

Explanation

Correct Answer

A:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. The result must be validated using the documented device, service or access context.

Incorrect Answers

B:

The case states supported similarity with confidence levels and avoids unsupported named-actor attribution. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

C:

The analysis captures linked behavior and preserves artifacts needed for follow-up detection engineering. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

D:

The report distinguishes observed static facts from hypotheses requiring controlled dynamic confirmation. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 795

An implementation sign-off request identifies the following problem: A SOC blocks a shared cloud CDN address forever because it once appeared in a malware report, disrupting thousands of customers. Which paired technical change and validation should close the implementation review? Select ONE best answer.

  1. Change: Attach confidence, source, first-seen and last-seen details and scope actions to contextual indicators with review or expiry. Verify: Check current resolution, hosting, traffic, original report and benign shared-service use before enforcing broad blocking.
  2. Change: Tie vulnerability priority to risk-based deadlines, verified mitigations, accountable exception approvals and post-change rescan. Verify: Compare scan findings, actual versions, ticket due dates, firewall test results and exception approval records.
  3. Change: Correlate cloud audit, identity, object sensitivity and network activity to define exposure and revoke unauthorized access. Verify: Examine object access logs, policy history, credential use, request source and affected file classifications.
  4. Change: Preserve container image identity, runtime events, orchestrator audit and ephemeral artifacts before controlled replacement or redeployment. Verify: Capture pod metadata, image digest, runtime process traces, service identity and cluster API events from an incident window.

Explanation

Correct Answer

A:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. The change is successful only when: High-confidence indicators drive targeted controls with low collateral impact and stale entries are retired.

Incorrect Answers

B:

Change: Tie vulnerability priority to risk-based deadlines, verified mitigations, accountable exception approvals and post-change rescan. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

C:

Change: Correlate cloud audit, identity, object sensitivity and network activity to define exposure and revoke unauthorized access. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

D:

Change: Preserve container image identity, runtime events, orchestrator audit and ephemeral artifacts before controlled replacement or redeployment. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 796

A SOC analyst is examining this cybersecurity operations situation: A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident. A proposed shortcut is: Convert every historical indicator into a permanent network-wide denial with no context review. What should the SOC analyst recommend as the narrowly scoped correction? Select ONE best answer.

  1. Attach confidence, source, first-seen and last-seen details and scope actions to contextual indicators with review or expiry.
  2. Acquire a permitted copy to isolated evidence storage with cryptographic hashes, timestamps and custody records before examination.
  3. Convert every historical indicator into a permanent network-wide denial with no context review.
  4. Validate complex indicators against benign reference telemetry and scope them with specific process, path or network context.

Explanation

Correct Answer

A:

This targeted action addresses the observed security or operational control gap without discarding necessary controls. Applied case: A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident.

Incorrect Answers

B:

Acquire a permitted copy to isolated evidence storage with cryptographic hashes, timestamps and custody records before examination. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

C:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. Applied case: A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident.

D:

Validate complex indicators against benign reference telemetry and scope them with specific process, path or network context. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 797

A Cisco cybersecurity incident response review finds: A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident. The team proposes: Attach confidence, source, first-seen and last-seen details and scope actions to contextual indicators with review or expiry. Which engineering principle most strongly supports the recommended response? Select ONE best answer.

  1. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.
  2. Hash identity is exact-file evidence while family similarity and actor attribution require corroborated, discriminating indicators.
  3. Complex signatures need both malicious coverage and false-positive evaluation before production deployment.
  4. Forensic reproducibility depends on preserving the original artifact and recording who accessed derived samples.

Explanation

Correct Answer

A:

Demonstrable success requires: High-confidence indicators drive targeted controls with low collateral impact and stale entries are retired. Applied case: A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident.

Incorrect Answers

B:

Hash identity is exact-file evidence while family similarity and actor attribution require corroborated, discriminating indicators. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

C:

Complex signatures need both malicious coverage and false-positive evaluation before production deployment. A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident.

D:

Forensic reproducibility depends on preserving the original artifact and recording who accessed derived samples. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 798

The SOC team has not yet approved changes. Current evidence indicates: A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident. Which evidence best tests the technical diagnosis before approving a disruptive change? Select ONE best answer.

  1. Review session origin, identity events, task creation, process trees and approved change records for the same time span.
  2. Compare scan findings, actual versions, ticket due dates, firewall test results and exception approval records.
  3. Check current resolution, hosting, traffic, original report and benign shared-service use before enforcing broad blocking.
  4. Examine object access logs, policy history, credential use, request source and affected file classifications.

Explanation

Correct Answer

C:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. This check tests the actual security, identity or operational boundary before an operationally risky response.

Incorrect Answers

A:

This option addresses a different security operations topic (Suspicious administrator activity investigation) rather than the documented IOC confidence, expiration and false associations decision.

B:

Compare scan findings, actual versions, ticket due dates, firewall test results and exception approval records. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

D:

Examine object access logs, policy history, credential use, request source and affected file classifications. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 799

A candidate correction has been tested and the platform team requires a post-change acceptance check. Original problem: A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident. 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.

  1. Investigators present a defensible sequence with confidence and clearly separated benign explanations.
  2. Detection content identifies the behavioral pattern without confusing transient infrastructure with immutable identity.
  3. The case identifies confirmed malicious actions and coverage gaps while necessary evidence is retained.
  4. High-confidence indicators drive targeted controls with low collateral impact and stale entries are retired.

Explanation

Correct Answer

D:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. The approved implementation step was: Attach confidence, source, first-seen and last-seen details and scope actions to contextual indicators with review or expiry.

Incorrect Answers

A:

Investigators present a defensible sequence with confidence and clearly separated benign explanations. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

B:

Detection content identifies the behavioral pattern without confusing transient infrastructure with immutable identity. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

C:

The case identifies confirmed malicious actions and coverage gaps while necessary evidence is retained. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Question 800

For an original CBRCOR educational scenario, consider: A phishing domain has changed ownership and an analyst has not checked whether its present use matches the historical incident. Select THREE compatible elements: a proper correction, a targeted diagnostic and an acceptance result.

  1. Change: Attach confidence, source, first-seen and last-seen details and scope actions to contextual indicators with review or expiry.
  2. Result: Reviewers can locate sensitive flows and propose testable controls for each relevant entry point and trust boundary.
  3. Check: Check current resolution, hosting, traffic, original report and benign shared-service use before enforcing broad blocking.
  4. Result: High-confidence indicators drive targeted controls with low collateral impact and stale entries are retired.
  5. Check: Compare content length, stream integrity, capture drops and recovered digest against source evidence when available.
  6. Change: Rank modeled abuse cases by likelihood, reachability, control gaps and plausible organizational impact with named owners.

Explanation

Correct Answer

A:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. Evidence: Check current resolution, hosting, traffic, original report and benign shared-service use before enforcing broad blocking.

C:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. Required intervention: Attach confidence, source, first-seen and last-seen details and scope actions to contextual indicators with review or expiry.

D:

Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time. Result: High-confidence indicators drive targeted controls with low collateral impact and stale entries are retired.

Incorrect Answers

B:

Result: Reviewers can locate sensitive flows and propose testable controls for each relevant entry point and trust boundary. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

E:

Check: Compare content length, stream integrity, capture drops and recovered digest against source evidence when available. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

F:

Change: Rank modeled abuse cases by likelihood, reachability, control gaps and plausible organizational impact with named owners. Threat infrastructure can be reused or reallocated; the same artifact may have different risk meaning over time.

Performing Cybersecurity Using Cisco Security Technologies (CBRCOR) (350-201) Practice Tests