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Cisco 350-401 Practice Test 61

Question 600

An operator gains privileged exec access without a second secret after authenticating as a low-privilege line user. During troubleshooting: A read-only operations user can enter configuration mode without authorization. Which underlying cause best explains the recorded behavior?

  1. Privilege separation or enable-secret control is missing or overly permissive.
  2. No effective source ACL is applied to VTY management access.
  3. The VTY lines use line password login rather than `login local` against named accounts.
  4. The environment has login records but not privileged command accounting.

Explanation

Correct Answer

A:

The actual technical cause is: Privilege separation or enable-secret control is missing or overly permissive. It specifically explains the observation: a read-only operations user can enter configuration mode without authorization. The correcting configuration is: configure an appropriate enable secret or per-user privilege/authorization boundary rather than trusting line authentication for all commands.

Incorrect Answers

B:

That diagnosis is supported by a different symptom: A workstation from an untrusted user VLAN can open the switch SSH login prompt. Here the recorded observation is: a read-only operations user can enter configuration mode without authorization. The applicable cause is: privilege separation or enable-secret control is missing or overly permissive.

C:

That diagnosis is supported by a different symptom: An operator logs in with a shared line password without any user-specific accountability. Here the recorded observation is: a read-only operations user can enter configuration mode without authorization. The applicable cause is: privilege separation or enable-secret control is missing or overly permissive.

D:

That diagnosis is supported by a different symptom: A configuration change is logged only as a device commit with no associated user command identity. Here the recorded observation is: a read-only operations user can enter configuration mode without authorization. The applicable cause is: privilege separation or enable-secret control is missing or overly permissive.

Question 601

An operator gains privileged exec access without a second secret after authenticating as a low-privilege line user. The initial change is: Configure an appropriate enable secret or per-user privilege/authorization boundary rather than trusting line authentication for all commands. Which continuing control most directly prevents a recurrence of the documented problem: A read-only operations user can enter configuration mode without authorization.

  1. Maintain management subnet allowlists and test negative-source access after site changes.
  2. Review privilege escalation and role-based access along with account login controls.
  3. Keep time synchronization and off-box retention of privileged command audit records.
  4. Audit named account lifecycle and remove unused break-glass credentials.

Explanation

Correct Answer

B:

The continuing protective control is: Review privilege escalation and role-based access along with account login controls. This addresses the underlying failure mechanism: privilege separation or enable-secret control is missing or overly permissive. The corresponding operational check is: test privileged configuration mode as both an authorized admin and a low-privilege operator.

Incorrect Answers

A:

That control reduces a separate risk: No effective source ACL is applied to VTY management access. For the described design, the recurring risk arises from: privilege separation or enable-secret control is missing or overly permissive. The specific required safeguard is: review privilege escalation and role-based access along with account login controls.

C:

That control reduces a separate risk: The environment has login records but not privileged command accounting. For the described design, the recurring risk arises from: privilege separation or enable-secret control is missing or overly permissive. The specific required safeguard is: review privilege escalation and role-based access along with account login controls.

D:

That control reduces a separate risk: The VTY lines use line password login rather than `login local` against named accounts. For the described design, the recurring risk arises from: privilege separation or enable-secret control is missing or overly permissive. The specific required safeguard is: review privilege escalation and role-based access along with account login controls.

Question 602

A network switch must end idle remote administration sessions after ten minutes to reduce unattended console exposure. The incident evidence is: A technician's idle SSH session remains usable overnight on a shared workstation. Which targeted configuration or design change best addresses the failure?

  1. Apply a supported VTY `exec-timeout` or equivalent session inactivity setting.
  2. Bind an appropriate standard access-class to VTY management connections from the approved source subnet.
  3. Create local administrator usernames with appropriately protected secrets and make the VTY lines use local login under SSH.
  4. Enable SSH version 2 with appropriate local/domain keys and restrict VTY transport input to SSH.

Explanation

Correct Answer

A:

The required correction is: Apply a supported VTY `exec-timeout` or equivalent session inactivity setting. The underlying failure mechanism is: The VTY session timeout is disabled or much longer than the required policy. Verify success by carrying out this direct test: verify an idle remote terminal closes after the configured interval without interrupting active sessions.

Incorrect Answers

B:

Bind an appropriate standard access-class to VTY management connections from the approved source subnet would not apply a supported VTY `exec-timeout` or equivalent session inactivity setting.

C:

Creating local administrator usernames with appropriately protected secrets and making the VTY lines use local login under SSH would not apply a supported VTY `exec-timeout` or equivalent session inactivity setting.

D:

Enabling SSH version 2 with appropriate local/domain keys and restricting VTY transport input to SSH would not apply a supported VTY `exec-timeout` or equivalent session inactivity setting.

Question 603

A network switch must end idle remote administration sessions after ten minutes to reduce unattended console exposure. The proposed remedy is: Apply a supported VTY `exec-timeout` or equivalent session inactivity setting. Which observation would most directly confirm that remedy works as intended?

  1. Verify an idle remote terminal closes after the configured interval without interrupting active sessions.
  2. Attempt Telnet and SSH connections from an approved host and confirm only encrypted SSH is accepted.
  3. Attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic.
  4. Inspect VTY authentication settings and verify a named account succeeds while an unknown account is rejected.

Explanation

Correct Answer

A:

The decisive acceptance observation is: Verify an idle remote terminal closes after the configured interval without interrupting active sessions. This tests the working mechanism, while the original incident was: a technician's idle SSH session remains usable overnight on a shared workstation.

Incorrect Answers

B:

This test measures a different behavior: Attempt Telnet and SSH connections from an approved host and confirm only encrypted SSH is accepted. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify an idle remote terminal closes after the configured interval without interrupting active sessions.

C:

This test measures a different behavior: Attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify an idle remote terminal closes after the configured interval without interrupting active sessions.

D:

This test measures a different behavior: Inspect VTY authentication settings and verify a named account succeeds while an unknown account is rejected. It does not establish the target outcome. For the documented fault, the direct acceptance test is: verify an idle remote terminal closes after the configured interval without interrupting active sessions.

Question 604

A network switch must end idle remote administration sessions after ten minutes to reduce unattended console exposure. During troubleshooting: A technician's idle SSH session remains usable overnight on a shared workstation. Which underlying cause best explains the recorded behavior?

  1. VTY transport input still permits Telnet despite SSH being configured.
  2. The VTY lines use line password login rather than `login local` against named accounts.
  3. The VTY session timeout is disabled or much longer than the required policy.
  4. No effective source ACL is applied to VTY management access.

Explanation

Correct Answer

C:

The actual technical cause is: The VTY session timeout is disabled or much longer than the required policy. It specifically explains the observation: a technician's idle SSH session remains usable overnight on a shared workstation. The correcting configuration is: apply a supported VTY `exec-timeout` or equivalent session inactivity setting.

Incorrect Answers

A:

That diagnosis is supported by a different symptom: The router still accepts plaintext Telnet sessions after the administrator creates an RSA key. Here the recorded observation is: a technician's idle SSH session remains usable overnight on a shared workstation. The applicable cause is: the VTY session timeout is disabled or much longer than the required policy.

B:

That diagnosis is supported by a different symptom: An operator logs in with a shared line password without any user-specific accountability. Here the recorded observation is: a technician's idle SSH session remains usable overnight on a shared workstation. The applicable cause is: the VTY session timeout is disabled or much longer than the required policy.

D:

That diagnosis is supported by a different symptom: A workstation from an untrusted user VLAN can open the switch SSH login prompt. Here the recorded observation is: a technician's idle SSH session remains usable overnight on a shared workstation. The applicable cause is: the VTY session timeout is disabled or much longer than the required policy.

Question 605

A network switch must end idle remote administration sessions after ten minutes to reduce unattended console exposure. The initial change is: Apply a supported VTY `exec-timeout` or equivalent session inactivity setting. Which continuing control most directly prevents a recurrence of the documented problem: A technician's idle SSH session remains usable overnight on a shared workstation.

  1. Review timeout values on console and VTY lines during template changes.
  2. Audit named account lifecycle and remove unused break-glass credentials.
  3. Maintain management subnet allowlists and test negative-source access after site changes.
  4. Review transport-input policy and management-path encryption after image upgrades.

Explanation

Correct Answer

A:

The continuing protective control is: Review timeout values on console and VTY lines during template changes. This addresses the underlying failure mechanism: the VTY session timeout is disabled or much longer than the required policy. The corresponding operational check is: verify an idle remote terminal closes after the configured interval without interrupting active sessions.

Incorrect Answers

B:

That control reduces a separate risk: The VTY lines use line password login rather than `login local` against named accounts. For the described design, the recurring risk arises from: the VTY session timeout is disabled or much longer than the required policy. The specific required safeguard is: review timeout values on console and VTY lines during template changes.

C:

That control reduces a separate risk: No effective source ACL is applied to VTY management access. For the described design, the recurring risk arises from: the VTY session timeout is disabled or much longer than the required policy. The specific required safeguard is: review timeout values on console and VTY lines during template changes.

D:

That control reduces a separate risk: VTY transport input still permits Telnet despite SSH being configured. For the described design, the recurring risk arises from: the VTY session timeout is disabled or much longer than the required policy. The specific required safeguard is: review timeout values on console and VTY lines during template changes.

Question 606

Security wants to restrict SSH management to a dedicated 192.0.2.0/24 jump subnet while preserving forwarding for user data. The incident evidence is: A workstation from an untrusted user VLAN can open the switch SSH login prompt. Which targeted configuration or design change best addresses the failure?

  1. Bind an appropriate standard access-class to VTY management connections from the approved source subnet.
  2. Apply a supported VTY `exec-timeout` or equivalent session inactivity setting.
  3. Enable SSH version 2 with appropriate local/domain keys and restrict VTY transport input to SSH.
  4. Set the required hostname/domain and generate supported SSH host keys before limiting VTY access.

Explanation

Correct Answer

A:

The required correction is: Bind an appropriate standard access-class to VTY management connections from the approved source subnet. The underlying failure mechanism is: No effective source ACL is applied to VTY management access. Verify success by carrying out this direct test: attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic.

Incorrect Answers

B:

Applying a supported VTY `exec-timeout` or equivalent session inactivity setting would not address the need for bind an appropriate standard access-class to VTY management connections from the approved source subnet.

C:

Enabling SSH version 2 with appropriate local/domain keys and restricting VTY transport input to SSH would not address the need for bind an appropriate standard access-class to VTY management connections from the approved source subnet.

D:

Setting the required hostname/domain and generating supported SSH host keys would not address the need for bind an appropriate standard access-class to VTY management connections from the approved source subnet.

Question 607

Security wants to restrict SSH management to a dedicated 192.0.2.0/24 jump subnet while preserving forwarding for user data. The proposed remedy is: Bind an appropriate standard access-class to VTY management connections from the approved source subnet. Which observation would most directly confirm that remedy works as intended?

  1. Attempt Telnet and SSH connections from an approved host and confirm only encrypted SSH is accepted.
  2. Attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic.
  3. Verify an idle remote terminal closes after the configured interval without interrupting active sessions.
  4. Inspect SSH server version/key status and complete a secure login from an authorized station.

Explanation

Correct Answer

B:

The decisive acceptance observation is: Attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic. This tests the working mechanism, while the original incident was: a workstation from an untrusted user VLAN can open the switch SSH login prompt.

Incorrect Answers

A:

This test measures a different behavior: Attempt Telnet and SSH connections from an approved host and confirm only encrypted SSH is accepted. It does not establish the target outcome. For the documented fault, the direct acceptance test is: attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic.

C:

This test measures a different behavior: Verify an idle remote terminal closes after the configured interval without interrupting active sessions. It does not establish the target outcome. For the documented fault, the direct acceptance test is: attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic.

D:

This test measures a different behavior: Inspect SSH server version/key status and complete a secure login from an authorized station. It does not establish the target outcome. For the documented fault, the direct acceptance test is: attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic.

Question 608

Security wants to restrict SSH management to a dedicated 192.0.2.0/24 jump subnet while preserving forwarding for user data. During troubleshooting: A workstation from an untrusted user VLAN can open the switch SSH login prompt. Which underlying cause best explains the recorded behavior?

  1. VTY transport input still permits Telnet despite SSH being configured.
  2. The VTY session timeout is disabled or much longer than the required policy.
  3. No effective source ACL is applied to VTY management access.
  4. The SSH server lacks required host key material or device identity prerequisites.

Explanation

Correct Answer

C:

The actual technical cause is: No effective source ACL is applied to VTY management access. It specifically explains the observation: a workstation from an untrusted user VLAN can open the switch SSH login prompt. The correcting configuration is: bind an appropriate standard access-class to VTY management connections from the approved source subnet.

Incorrect Answers

A:

That diagnosis is supported by a different symptom: The router still accepts plaintext Telnet sessions after the administrator creates an RSA key. Here the recorded observation is: a workstation from an untrusted user VLAN can open the switch SSH login prompt. The applicable cause is: no effective source ACL is applied to VTY management access.

B:

That diagnosis is supported by a different symptom: A technician's idle SSH session remains usable overnight on a shared workstation. Here the recorded observation is: a workstation from an untrusted user VLAN can open the switch SSH login prompt. The applicable cause is: no effective source ACL is applied to VTY management access.

D:

That diagnosis is supported by a different symptom: SSH cannot start even though a local account and VTY login method exist. Here the recorded observation is: a workstation from an untrusted user VLAN can open the switch SSH login prompt. The applicable cause is: no effective source ACL is applied to VTY management access.

Question 609

Security wants to restrict SSH management to a dedicated 192.0.2.0/24 jump subnet while preserving forwarding for user data. The initial change is: Bind an appropriate standard access-class to VTY management connections from the approved source subnet. Which continuing control most directly prevents a recurrence of the documented problem: A workstation from an untrusted user VLAN can open the switch SSH login prompt.

  1. Plan key regeneration and supported minimum key length during device replacement.
  2. Review transport-input policy and management-path encryption after image upgrades.
  3. Maintain management subnet allowlists and test negative-source access after site changes.
  4. Tune login blocking to preserve approved emergency access and monitor lockout alerts.

Explanation

Correct Answer

C:

The continuing protective control is: Maintain management subnet allowlists and test negative-source access after site changes. This addresses the underlying failure mechanism: no effective source ACL is applied to VTY management access. The corresponding operational check is: attempt SSH from an allowed jump host and a disallowed user subnet without disturbing data-plane traffic.

Incorrect Answers

A:

That control reduces a separate risk: The SSH server lacks required host key material or device identity prerequisites. For the described design, the recurring risk arises from: no effective source ACL is applied to VTY management access. The specific required safeguard is: maintain management subnet allowlists and test negative-source access after site changes.

B:

That control reduces a separate risk: VTY transport input still permits Telnet despite SSH being configured. For the described design, the recurring risk arises from: no effective source ACL is applied to VTY management access. The specific required safeguard is: maintain management subnet allowlists and test negative-source access after site changes.

D:

That control reduces a separate risk: Login attack mitigation thresholds and enforcement were not configured for the VTY service. For the described design, the recurring risk arises from: no effective source ACL is applied to VTY management access. The specific required safeguard is: maintain management subnet allowlists and test negative-source access after site changes.

Question 610

A switch records all local login failures but lacks a way to lock out repeated remote password guessing attempts. The incident evidence is: An external host attempts unlimited SSH passwords without temporary throttling. Which targeted configuration or design change best addresses the failure?

  1. Set the required hostname/domain and generate supported SSH host keys before limiting VTY access.
  2. Bind an appropriate standard access-class to VTY management connections from the approved source subnet.
  3. Create local administrator usernames with appropriately protected secrets and make the VTY lines use local login under SSH.
  4. Configure supported login security controls such as quiet-mode thresholds and login block-for on the appropriate IOS release.

Explanation

Correct Answer

D:

The required correction is: Configure supported login security controls such as quiet-mode thresholds and login block-for on the appropriate IOS release. The underlying failure mechanism is: Login attack mitigation thresholds and enforcement were not configured for the VTY service. Verify success by carrying out this direct test: generate controlled failed logins and confirm a temporary lockout with useful audit events.

Incorrect Answers

A:

Setting the required hostname/domain and generating supported SSH host keys would not configure supported login security controls such as quiet-mode thresholds and login block-for on the appropriate IOS release.

B:

Bind an appropriate standard access-class to VTY management connections from the approved source subnet would not configure supported login security controls such as quiet-mode thresholds and login block-for on the appropriate IOS release.

C:

Creating local administrator usernames with appropriately protected secrets and making the VTY lines use local login under SSH would not configure supported login security controls such as quiet-mode thresholds and login block-for on the appropriate IOS release.


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