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Certified Information Systems Security Professional CISSP Practice Test 29

Question 280

Visitors can reach sensitive file servers from the guest Wi-Fi because both networks share a permissive bridge. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Configure the guest and internal SSIDs on different VLAN numbers but permit unrestricted inter-VLAN routing.
  2. Use the same bridging domain for guests and employees while adding a welcome page.
  3. Isolate guest wireless traffic with restrictive layer 3 and application policy to approved internet services.
  4. Hide internal server DNS names from guests while permitting direct IP access to file shares.

Explanation

Correct Answer

C:

Authentication to guest Wi-Fi must not imply access to internal corporate assets. VLAN tagging alone is insufficient if upstream routing policies rejoin the networks.

Incorrect Answers

A:

VLAN separation alone does not enforce denial of sensitive internal access.

B:

A portal does not create the needed layer 2 and layer 3 isolation.

D:

Name resolution restrictions do not block unauthorized network paths.

Question 281

The organization implemented the response to this scenario: Visitors can reach sensitive file servers from the guest Wi-Fi because both networks share a permissive bridge. The approved response was: Isolate guest wireless traffic with restrictive layer 3 and application policy to approved internet services. Which statement MOST accurately identifies a remaining risk or constraint?

  1. VLAN tagging by itself guarantees isolation even when upstream routers forward between the tags.
  2. Guest Wi-Fi authentication means visitors may access all corporate internal subnets.
  3. A separate guest SSID ensures file shares cannot be reached if both networks share a permissive bridge.
  4. VLAN tagging alone is insufficient if upstream routing policies rejoin the networks.

Explanation

Correct Answer

D:

Authentication to guest Wi-Fi must not imply access to internal corporate assets. Guest tests reach approved internet access but not internal file or management endpoints.

Incorrect Answers

A:

Effective segmentation requires routed and application-layer deny rules.

B:

Admission to guest internet access is not entitlement to protected assets.

C:

Radio network labels do not necessarily imply forwarding isolation.

Question 282

Management implemented a response after this event: Visitors can reach sensitive file servers from the guest Wi-Fi because both networks share a permissive bridge. The response was: Isolate guest wireless traffic with restrictive layer 3 and application policy to approved internet services. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. Guests use a distinct SSID, yet test clients can connect to internal SMB shares by IP address.
  2. The captive portal asks for a password but routes from guests to server management ports remain open.
  3. The firewall has a guest zone label, but explicit negative tests still reach domain controllers.
  4. Guest tests reach approved internet access but not internal file or management endpoints.

Explanation

Correct Answer

D:

Guest tests reach approved internet access but not internal file or management endpoints. Authentication to guest Wi-Fi must not imply access to internal corporate assets.

Incorrect Answers

A:

Distinct network names do not prove effective isolation.

B:

Portal login does not demonstrate least-privilege traffic policy.

C:

Zone names are not evidence that deny enforcement is effective.

Question 283

A remote tablet uses cellular data and is exempted from endpoint compliance because it is not on corporate Wi-Fi. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Exempt cellular-connected tablets from compliance controls because they bypass the office LAN.
  2. Allow managed network access from any device once the user enters a correct password.
  3. Apply configuration checks only to employees at headquarters and not remote mobile devices.
  4. Apply device posture, encryption, authentication and remote-access rules independent of connection medium.

Explanation

Correct Answer

D:

A cellular network does not remove endpoint compromise or data-access risk. Mobile management telemetry must respect privacy requirements and device ownership.

Incorrect Answers

A:

Endpoint and credential threats persist regardless of whether traffic uses a carrier or local Wi-Fi.

B:

A valid identity does not establish device security or permitted resource context.

C:

Sensitive application controls must follow effective access rather than a physical office boundary.

Question 284

The organization implemented the response to this scenario: A remote tablet uses cellular data and is exempted from endpoint compliance because it is not on corporate Wi-Fi. The approved response was: Apply device posture, encryption, authentication and remote-access rules independent of connection medium. Which statement MOST accurately identifies a remaining risk or constraint?

  1. Mobile management telemetry must respect privacy requirements and device ownership.
  2. Carrier-owned mobile networks automatically prevent device malware from using approved credentials.
  3. A compliant device remains safe indefinitely even after compromise or policy drift.
  4. Endpoint controls can be omitted for personally owned tablets because they use their own data plans.

Explanation

Correct Answer

A:

A cellular network does not remove endpoint compromise or data-access risk. A noncompliant tablet cannot reach regulated applications over either mobile or Wi-Fi links.

Incorrect Answers

B:

Connection medium does not establish trusted endpoint posture.

C:

Posture may change and session-level monitoring and privilege limits remain necessary.

D:

Data and application access still require proportionate authentication and device assurance.

Question 285

Management implemented a response after this event: A remote tablet uses cellular data and is exempted from endpoint compliance because it is not on corporate Wi-Fi. The response was: Apply device posture, encryption, authentication and remote-access rules independent of connection medium. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. A rooted test tablet reaches regulated apps over cellular while the same device is blocked on Wi-Fi.
  2. A noncompliant tablet cannot reach regulated applications over either mobile or Wi-Fi links.
  3. Mobile service connectivity is strong, but device integrity is never checked before privileged access.
  4. A user password works on every device, including an unmanaged kiosk outside the corporate network.

Explanation

Correct Answer

B:

A noncompliant tablet cannot reach regulated applications over either mobile or Wi-Fi links. A cellular network does not remove endpoint compromise or data-access risk.

Incorrect Answers

A:

Inconsistent medium-dependent policy leaves a bypass route.

C:

Radio coverage says nothing about endpoint compliance.

D:

Successful login does not demonstrate appropriate device-aware authorization.

Question 286

A public service uses a CDN WAF but its origin remains directly reachable via a known cloud public IP. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Deploy a stronger WAF rule at the CDN edge but leave the public origin directly reachable.
  2. Restrict origin access to trusted edge paths and independently validate direct-origin denial.
  3. Hide the origin hostname in public documentation while retaining unrestricted public IP routes.
  4. Encrypt origin traffic from the CDN while continuing to accept any direct client connection at the origin.

Explanation

Correct Answer

B:

Edge filtering is ineffective when attackers can bypass the edge and reach the origin. Origin authorization must account for legitimate health checks and automated changes in edge addresses.

Incorrect Answers

A:

Attackers can bypass edge filtering by connecting to the exposed origin IP.

C:

An IP-based bypass does not depend on the origin name being advertised.

D:

Transport encryption does not enforce that requests traverse the approved WAF path.

Question 287

The organization implemented the response to this scenario: A public service uses a CDN WAF but its origin remains directly reachable via a known cloud public IP. The approved response was: Restrict origin access to trusted edge paths and independently validate direct-origin denial. Which statement MOST accurately identifies a remaining risk or constraint?

  1. All inbound traffic is inspected by a CDN WAF whenever the application’s official DNS points to the CDN.
  2. An origin-only TLS certificate guarantees that direct hostile requests cannot reach the backend.
  3. Origin authorization must account for legitimate health checks and automated changes in edge addresses.
  4. IP address changes at the CDN can be ignored after hard-coding one old edge address set forever.

Explanation

Correct Answer

C:

Edge filtering is ineffective when attackers can bypass the edge and reach the origin. WAF-approved requests work through the CDN while direct hostile origin requests fail.

Incorrect Answers

A:

A known public origin can be reached independently of the official hostname.

B:

TLS protects the connection but is not an allowlist of authorized edge callers.

D:

Trusted-edge restrictions need operational updates and legitimate health-check handling.

Question 288

Management implemented a response after this event: A public service uses a CDN WAF but its origin remains directly reachable via a known cloud public IP. The response was: Restrict origin access to trusted edge paths and independently validate direct-origin denial. Which observed outcome BEST verifies that the intended security protection operates, rather than merely appearing in a plan?

  1. WAF-approved requests work through the CDN while direct hostile origin requests fail.
  2. Normal WAF-approved requests succeed, but a direct curl to the origin public IP bypasses policy.
  3. The DNS record references the CDN while the origin security group allows every internet source.
  4. Edge logs show blocked attacks, but the same exploit reaches the backend without generating WAF records.

Explanation

Correct Answer

A:

WAF-approved requests work through the CDN while direct hostile origin requests fail. Edge filtering is ineffective when attackers can bypass the edge and reach the origin.

Incorrect Answers

B:

Positive CDN behavior does not demonstrate origin-only enforcement.

C:

Correct DNS routing does not prove direct-origin access denial.

D:

The missing edge log reveals the unprotected bypass path.

Question 289

Operations receives sampled firewall counters but cannot correlate which lateral path carried a suspected data leak. As the accountable security practitioner, which response BEST addresses the specific weakness without introducing a different untested control?

  1. Keep only total firewall packet counters and omit source, destination, time and identity context.
  2. Collect scoped network-flow metadata with synchronized timestamps, secure retention and identity context.
  3. Disable all network metadata logging to maximize privacy during a suspected internal exfiltration event.
  4. Capture only encrypted payload bytes without connection identifiers or reliable timestamps.

Explanation

Correct Answer

B:

Flow telemetry can establish communication patterns even without storing packet contents. Encrypted traffic metadata may be sensitive; access and retention must be governed.

Incorrect Answers

A:

Aggregate counters cannot reconstruct the suspected lateral data path.

C:

Privacy can be protected by governed collection rather than abandoning necessary scoped incident evidence.

D:

Uncontextualized bytes cannot link a suspected flow to its hosts and policy decisions.

Question 290

The organization implemented the response to this scenario: Operations receives sampled firewall counters but cannot correlate which lateral path carried a suspected data leak. The approved response was: Collect scoped network-flow metadata with synchronized timestamps, secure retention and identity context. Which statement MOST accurately identifies a remaining risk or constraint?

  1. Encrypted traffic metadata may be sensitive; access and retention must be governed.
  2. Network-flow telemetry may be retained and broadly shared without privacy restrictions because it contains no decrypted payload.
  3. An aggregate firewall rule hit count uniquely identifies which workstation sent data to which destination.
  4. Synchronized timestamps automatically prove that each recorded user identity was uncompromised.

Explanation

Correct Answer

A:

Flow telemetry can establish communication patterns even without storing packet contents. A test exfiltration flow is attributable to source, destination, time and applied policy decision.

Incorrect Answers

B:

Metadata can still expose sensitive activity and needs access and retention governance.

C:

Total counters do not preserve the flow-level endpoints or timeline.

D:

Time alignment supports correlation, not authentication of every claimed actor.

Certified Information Systems Security Professional (CISSP) Practice Tests

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