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Exam Code: PT0-003

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CompTIA PT0-003 Practice Test 78

Question 770

DNS queries carry unusually long encoded-looking subdomain labels during a simulated incident. What outcome is consistent with the correct authorized test?

  1. The lab shows synthetic bytes crossed the approved boundary only.
  2. The incident narrative attributes the transfer to the initiating identity and target.
  3. The permitted lab test shows sync is blocked for unapproved cloud providers.
  4. A safe lab pattern triggers the intended anomaly detection.

Explanation

Correct Answer

D:

A safe lab pattern triggers the intended anomaly detection. This answer directly addresses the described constraint. DNS can carry data in query names when abused as a covert channel. Successful validation requires: A safe lab pattern triggers the intended anomaly detection.

Incorrect Answers

A:

It would address a penetration tester wants to prove data exfiltration but the contract forbids copying personal information. The relevant reason in that case is: Exfiltration tests should avoid moving real sensitive client content. Here the required success condition is a safe lab pattern triggers the intended anomaly detection. The relevant evidence is: A safe lab pattern triggers the intended anomaly detection.

B:

This result applies to a different case: An application makes encrypted HTTPS requests to a newly registered domain after accessing a sensitive database. Encrypted transport can conceal unauthorized data transfer. It does not establish the present requirement, where a safe lab pattern triggers the intended anomaly detection. The relevant evidence is: A safe lab pattern triggers the intended anomaly detection.

C:

That approach concerns a different situation: a Windows host maps a cloud-backed virtual drive through an unauthorized sync client. Mapped storage can move data outside conventional removable drives. The required result is that a safe lab pattern triggers the intended anomaly detection. The relevant evidence is: A safe lab pattern triggers the intended anomaly detection.

Question 771

A visitor uses an authorized staff member's badge replica in a test access system. Which acceptance-test result would directly establish that the issue was addressed?

  1. A controlled cloned credential is rejected or logged under the approved test.
  2. A safe observation confirms whether identity verification occurs for all entrants.
  3. The report uses redacted evidence and verifies disposal control ownership.
  4. The outcome shows whether unapproved badge duplication is prevented.

Explanation

Correct Answer

A:

The correct acceptance evidence is a controlled cloned credential is rejected or logged under the approved test. The relevant technical principle is: Copied credentials can bypass physical identity checks if unprotected. It is confirmed when a controlled cloned credential is rejected or logged under the approved test.

Incorrect Answers

B:

It would address employees frequently enter a controlled warehouse door by carrying boxes that obstruct badge presentation. The relevant reason in that case is: Operational processes can unintentionally defeat physical control design. Here the required success condition is a controlled cloned credential is rejected or logged under the approved test. The relevant evidence is: A controlled cloned credential is rejected or logged under the approved test.

C:

This result applies to a different case: A test team discovers sensitive paper records in an unattended office recycling bin. Physical information leakage may occur without network exploitation. It does not establish the present requirement, where a controlled cloned credential is rejected or logged under the approved test. The relevant evidence is: A controlled cloned credential is rejected or logged under the approved test.

D:

That approach concerns a different situation: a client wants to determine whether an employee can remotely open a door with another person's proximity badge. Authentication properties must be demonstrated without using actual employee identifiers. The required result is that a controlled cloned credential is rejected or logged under the approved test. The relevant evidence is: A controlled cloned credential is rejected or logged under the approved test.

Question 772

A service exposes multiple ports associated with different application protocols. Which result shows the selected action was suitable and effective?

  1. The finding redacts content while retaining protocol and traffic evidence.
  2. The result remains inconclusive until protocol-specific evidence is obtained.
  3. A verified service inventory identifies observed protocol behavior.
  4. The scan record reflects closed states for the observed resets.

Explanation

Correct Answer

C:

Nonstandard port assignments are common and port numbers are only initial clues. Therefore select: A verified service inventory identifies observed protocol behavior. For this specific situation the expected proof is: A verified service inventory identifies observed protocol behavior.

Incorrect Answers

A:

That approach concerns a different situation: a customer wants evidence that a network capture could expose plaintext application credentials. Plaintext transport makes credential material observable to network participants. The required result is that a verified service inventory identifies observed protocol behavior. The relevant evidence is: A verified service inventory identifies observed protocol behavior.

B:

That relates to a different issue: A UDP application is suspected, but no response appears to a generic UDP probe. UDP scanning often lacks reliable positive replies without an application response. That is not a direct remedy for the requested outcome: A verified service inventory identifies observed protocol behavior. The relevant evidence is: A verified service inventory identifies observed protocol behavior.

D:

This result applies to a different case: A firewall sends TCP RST responses to selected ports during discovery. TCP resets distinguish a rejected connection from a no-response condition. It does not establish the present requirement, where a verified service inventory identifies observed protocol behavior. The relevant evidence is: A verified service inventory identifies observed protocol behavior.

Question 773

An app release pipeline needs to assess newly introduced source flaws as developers commit changes. Which test evidence best satisfies the stated professional requirement?

  1. The scanner reports a redacted finding tied to commit and owner.
  2. An intentionally unsafe sample triggers a reviewed issue on the correct commit.
  3. The scanner records a safely reproducible endpoint issue in staging.
  4. The result cites observed missing headers or exposed files, not an assumed exploit.

Explanation

Correct Answer

B:

The source-based choice is an intentionally unsafe sample triggers a reviewed issue on the correct commit. Source testing can gate dangerous patterns before execution. Evidence should show that an intentionally unsafe sample triggers a reviewed issue on the correct commit.

Incorrect Answers

A:

This result applies to a different case: A security pipeline may contain private API tokens in committed history. Secret detection should avoid creating new exposure in logs. It does not establish the present requirement, where an intentionally unsafe sample triggers a reviewed issue on the correct commit. The relevant evidence is: An intentionally unsafe sample triggers a reviewed issue on the correct commit.

C:

That relates to a different issue: An application security team needs to test live behavior after new API endpoints are deployed. Runtime behavior may differ from static source expectations. That is not a direct remedy for the requested outcome: An intentionally unsafe sample triggers a reviewed issue on the correct commit. The relevant evidence is: An intentionally unsafe sample triggers a reviewed issue on the correct commit.

D:

It would address a vulnerability analyst needs to assess a publicly reachable web server's unsafe headers and default files. The relevant reason in that case is: Web configuration assessment targets service weaknesses distinct from full code review. Here the required success condition is an intentionally unsafe sample triggers a reviewed issue on the correct commit. The relevant evidence is: An intentionally unsafe sample triggers a reviewed issue on the correct commit.

Question 774

A PowerShell lab tool scans too many endpoints in parallel, triggering service health alarms. Which method should the assessment team select for this precise requirement?

  1. Use the tests only in an approved isolated simulation with reviewed detection expectations.
  2. Use structured parsing and guard absent fields before analysis.
  3. Introduce explicit concurrency limits and emergency stop checks.
  4. Move packet construction to a permitted lab and limit live production analysis to passive observation.

Explanation

Correct Answer

C:

This matches the current authorized case: Introduce explicit concurrency limits and emergency stop checks. Automation pacing is part of authorized test safety. The observable criterion is the execution never exceeds the approved active worker count.

Incorrect Answers

A:

It would address a security analyst wants to run Atomic Red Team tests but production containment could be triggered. The relevant reason in that case is: Breach-and-attack simulation must respect real business impact. Here the required success condition is the execution never exceeds the approved active worker count. The appropriate action is: Introduce explicit concurrency limits and emergency stop checks.

B:

This action applies to a different case: A Python assessment script must process a JSON vulnerability feed with missing keys. Defensive handling prevents script crashes or fabricated values. It does not establish the present requirement, where the execution never exceeds the approved active worker count. The appropriate action is: Introduce explicit concurrency limits and emergency stop checks.

D:

That relates to a different issue: A team plans to use Scapy to craft arbitrary network packets on a sensitive industrial segment. Packet crafting can bypass normal protocol safeguards and destabilize fragile systems. That is not a direct remedy for the requested outcome: The execution never exceeds the approved active worker count. The appropriate action is: Introduce explicit concurrency limits and emergency stop checks.

Question 775

A mobile app behaves differently when installed on a rooted or jailbroken test phone. Which finding would most directly demonstrate successful validation?

  1. The activity log lists only authorized device serials.
  2. The report records the security behavior on supported and modified test devices.
  3. A simulated unauthorized register write is blocked by the protective gateway.
  4. The finding documents observed plaintext without changing live process state.

Explanation

Correct Answer

B:

The report records the security behavior on supported and modified test devices. This answer directly addresses the described constraint. Rooting removes some platform isolation guarantees and changes test conditions. Successful validation requires: The report records the security behavior on supported and modified test devices.

Incorrect Answers

A:

That relates to a different issue: A tester uses ADB to inspect a test Android device but production phones are excluded. Mobile debugging bridges can expose privileged device state if misused. That is not a direct remedy for the requested outcome: The report records the security behavior on supported and modified test devices. The relevant evidence is: The report records the security behavior on supported and modified test devices.

C:

This result applies to a different case: A factory PLC accepts unauthenticated writes to process registers on a lab Modbus network. Legacy industrial protocols may not enforce message authorization. It does not establish the present requirement, where the report records the security behavior on supported and modified test devices. The relevant evidence is: The report records the security behavior on supported and modified test devices.

D:

That approach concerns a different situation: a production OT controller uses plaintext commands, but safety rules prohibit live command injection. Unencrypted industrial traffic can reveal operations while active tests create safety risk. The required result is that the report records the security behavior on supported and modified test devices. The relevant evidence is: The report records the security behavior on supported and modified test devices.

Question 776

A vulnerability scan highlights a CVE in a dormant service not installed on the target. What observation would best confirm the intended security outcome?

  1. The final assessment ties each finding to a dated build and advisory.
  2. The final report attributes downtime to documented maintenance or unresolved events.
  3. The report documents the evidence proving the component is absent.
  4. The coverage statement identifies the omitted protected routes.

Explanation

Correct Answer

C:

The correct acceptance evidence is the report documents the evidence proving the component is absent. The relevant technical principle is: CVE matching must correspond to actual components. It is confirmed when the report documents the evidence proving the component is absent.

Incorrect Answers

A:

That approach concerns a different situation: two scans report conflicting CVEs for the same package after a patch rollout. Patch state and scanner signatures may change between observations. The required result is that the report documents the evidence proving the component is absent. The relevant evidence is: The report documents the evidence proving the component is absent.

B:

That relates to a different issue: An infrastructure scan ran during a maintenance restart and marked many endpoints as unavailable. Transient maintenance can cause misleading service detection. That is not a direct remedy for the requested outcome: The report documents the evidence proving the component is absent. The relevant evidence is: The report documents the evidence proving the component is absent.

D:

This result applies to a different case: A web scan reports no injection defects but excluded every authenticated API route. A negative result applies only to the surfaces actually tested. It does not establish the present requirement, where the report documents the evidence proving the component is absent. The relevant evidence is: The report documents the evidence proving the component is absent.

Question 777

An assessor created a temporary directory account to validate scoped identity permissions. What response best meets the technical and engagement constraints?

  1. Close the listener and remove exposed test routes as part of final cleanup.
  2. Disable and remove the account after preserving necessary evidence.
  3. Reset credentials and invalidate surviving sessions under owner supervision.
  4. Remove the task and verify it cannot run again.

Explanation

Correct Answer

B:

Tester-created identities can become lingering access paths. Therefore select: Disable and remove the account after preserving necessary evidence. For this specific situation the expected proof is: The directory has no active assessment account and shows a removal record.

Incorrect Answers

A:

This action applies to a different case: An assessment delivered a security finding while the last test proxy still listens on a public address. Temporary test infrastructure can itself become an internet exposure. It does not establish the present requirement, where the directory has no active assessment account and shows a removal record. The appropriate action is: Disable and remove the account after preserving necessary evidence.

C:

That relates to a different issue: A temporary password was set on an approved test account during a proof. Temporary authentication changes can create lingering security risk. That is not a direct remedy for the requested outcome: The directory has no active assessment account and shows a removal record. The appropriate action is: Disable and remove the account after preserving necessary evidence.

D:

It would address an engagement installed a scheduled laboratory test task that remains after testing is complete. The relevant reason in that case is: Persistence artifacts must not survive beyond signed testing authorization. Here the required success condition is the directory has no active assessment account and shows a removal record. The appropriate action is: Disable and remove the account after preserving necessary evidence.

Question 778

A privileged account can bypass MFA when authenticating through a legacy protocol. Which testing or remediation action is most appropriate?

  1. Identify a mask-style attack and report the candidate pattern.
  2. Recommend blocking legacy authentication paths or enforcing supported stronger access policies.
  3. Use approved BloodHound relationship analysis without exploiting the path.
  4. Classify the weakness as pass-the-hash exposure and recommend protocol hardening.

Explanation

Correct Answer

B:

The source-based choice is recommend blocking legacy authentication paths or enforcing supported stronger access policies. Strong interactive MFA is undermined by weaker alternate sign-in routes. Evidence should show that a test legacy client cannot access protected privileged resources.

Incorrect Answers

A:

It would address a password audit uses fixed character positions with variable numeric suffixes on synthetic hashes. The relevant reason in that case is: Mask attacks constrain guesses by a specified character pattern. Here the required success condition is a test legacy client cannot access protected privileged resources. The appropriate action is: Recommend blocking legacy authentication paths or enforcing supported stronger access policies.

C:

That approach concerns a different situation: a client needs to visualize delegated privileges leading from a low-right account to an admin role. Directory graphing can reveal potential escalation edges for remediation. The required result is that a test legacy client cannot access protected privileged resources. The appropriate action is: Recommend blocking legacy authentication paths or enforcing supported stronger access policies.

D:

That relates to a different issue: An approved lab shows NTLM network authentication may be accepted without a plaintext password. Reusable password-derived authentication material can be abused in some NTLM flows. That is not a direct remedy for the requested outcome: A test legacy client cannot access protected privileged resources. The appropriate action is: Recommend blocking legacy authentication paths or enforcing supported stronger access policies.

Question 779

A client wants to assess relay susceptibility without capturing employee credentials. What is the most defensible next action for the tester within the stated boundaries?

  1. Use only designated lab identities and simulated authentication material.
  2. Choose the narrow interactive client for one handshake and a bounded scanner for inventory.
  3. Assess VLAN hopping risk within a dedicated lab switch and avoid production disruption.
  4. Observe protocol negotiation and warn about plaintext credential transit.

Explanation

Correct Answer

A:

This matches the current authorized case: Use only designated lab identities and simulated authentication material. Proof of authentication relay must avoid collection of unrelated secrets. The observable criterion is the demonstration shows the relevant control state with synthetic accounts.

Incorrect Answers

B:

It would address a client asks whether Netcat or Nmap is better for a quick in-scope service handshake versus mapping many ports. The relevant reason in that case is: Tool function must match whether the goal is a single connection or discovery. Here the required success condition is the demonstration shows the relevant control state with synthetic accounts. The appropriate action is: Use only designated lab identities and simulated authentication material.

C:

This action applies to a different case: A switch port is configured to accept tags from an untrusted endpoint. Incorrect trunk or native VLAN settings can break intended network segregation. It does not establish the present requirement, where the demonstration shows the relevant control state with synthetic accounts. The appropriate action is: Use only designated lab identities and simulated authentication material.

D:

That approach concerns a different situation: a client wants to evaluate an old Telnet management interface without reading passwords. Telnet lacks built-in encrypted session protection. The required result is that the demonstration shows the relevant control state with synthetic accounts. The appropriate action is: Use only designated lab identities and simulated authentication material.

Question 780

A vulnerability analyst needs to assess a publicly reachable web server's unsafe headers and default files. Which result shows the selected action was suitable and effective?

  1. The result cites observed missing headers or exposed files, not an assumed exploit.
  2. The assessment documents nonintrusive evidence and untested limitations.
  3. The report states which routes were blocked and not verified.
  4. The results classify code flaws separately from platform configuration.

Explanation

Correct Answer

A:

The result cites observed missing headers or exposed files, not an assumed exploit. This answer directly addresses the described constraint. Web configuration assessment targets service weaknesses distinct from full code review. Successful validation requires: The result cites observed missing headers or exposed files, not an assumed exploit.

Incorrect Answers

B:

That relates to a different issue: An analyst must assess an ICS network that lacks safe active vulnerability scanning windows. Live probing can create safety and availability risk to industrial equipment. That is not a direct remedy for the requested outcome: The result cites observed missing headers or exposed files, not an assumed exploit. The relevant evidence is: The result cites observed missing headers or exposed files, not an assumed exploit.

C:

It would address an assessment finds a web service protected by a WAF that blocks many scanner patterns. The relevant reason in that case is: WAF responses can mask vulnerabilities and reduce scan completeness. Here the required success condition is the result cites observed missing headers or exposed files, not an assumed exploit. The relevant evidence is: The result cites observed missing headers or exposed files, not an assumed exploit.

D:

This result applies to a different case: A test engineer wishes to find vulnerable applications in managed serverless services. Serverless resources lack direct host scanning but still have code and identity risks. It does not establish the present requirement, where the result cites observed missing headers or exposed files, not an assumed exploit. The relevant evidence is: The result cites observed missing headers or exposed files, not an assumed exploit.