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Cisco 300-410 Bundle

Exam Code: 300-410

Exam Name Implementing Cisco Enterprise Advanced Routing and Services (ENARSI)

Certification Provider: Cisco

Corresponding Certification: CCNP Enterprise

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Implementing Cisco Enterprise Advanced Routing and Services (ENARSI) (300-410) Practice Tests

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Cisco 300-410 Practice Test 32

Question 310

At the Aspen agricultural office, short management packets pass through the DMVPN, but larger TCP sessions repeatedly stall after encapsulation. Which underlying technical condition best accounts for this evidence?

  1. The egress VPN label is associated with a specific VRF forwarding action, not a global-table lookup.
  2. IKE identity authentication succeeds, but IPsec data-plane proposals are incompatible.
  3. NHRP registration messages are rejected because peers do not agree on their authentication secret.
  4. Encapsulation reduces effective payload MTU, causing large packets to fragment or be dropped.

Explanation

Correct Answer

D:

The evidence at the Aspen agricultural office supports this condition: Encapsulation reduces effective payload MTU, causing large packets to fragment or be dropped. The associated fix is: Set appropriate tunnel MTU and TCP MSS handling based on GRE/IPsec overhead and verified PMTUD behavior.

Incorrect Answers

A:

The observation at the Aspen agricultural office does not point to mpls vpn per-vrf forwarding lookup; it points to a different condition. Encapsulation reduces effective payload MTU, causing large packets to fragment or be dropped.

B:

This diagnoses a different mechanism: IKE identity authentication succeeds, but IPsec data-plane proposals are incompatible. The reported symptom at the Aspen agricultural office instead concerns gre over ipsec mtu and mss.

C:

That diagnosis belongs to dmvpn nhrp authentication mismatch, while the observation at the Aspen agricultural office points to gre over ipsec mtu and mss.

Question 311

At the Cedarbrook hospital, remote TACACS+ authentication becomes unreachable, and administrators are locked out of R-CDR-WAN1 despite a properly maintained emergency local account. Which underlying technical condition best accounts for this evidence?

  1. The configured named method list is not bound to the management access path where authentication occurs.
  2. The AAA login method has no usable local fallback when the remote authentication server fails.
  3. The selected login-only RADIUS integration does not provide the intended granular device command control.
  4. Authentication succeeded, but separate AAA authorization does not permit the requested command.

Explanation

Correct Answer

B:

The evidence at the Cedarbrook hospital supports this condition: The AAA login method has no usable local fallback when the remote authentication server fails. The associated fix is: Use an authorized AAA method list with a local fallback after unavailable remote servers, preserving the existing remote-first policy.

Incorrect Answers

A:

That diagnosis belongs to aaa method list applied to wrong lines, while the observation at the Cedarbrook hospital points to aaa local fallback on server outage.

C:

This diagnoses a different mechanism: The selected login-only RADIUS integration does not provide the intended granular device command control. The reported symptom at the Cedarbrook hospital instead concerns aaa local fallback on server outage.

D:

That diagnosis belongs to aaa authorization versus authentication, while the observation at the Cedarbrook hospital points to aaa local fallback on server outage.

Question 312

At the Redwood medical campus, remote TACACS+ authentication becomes unreachable, and administrators are locked out of R-RED-EDGE1 despite a properly maintained emergency local account. Which underlying technical condition best accounts for this evidence?

  1. Authentication succeeded, but separate AAA authorization does not permit the requested command.
  2. The control-plane classifier does not match OSPF packets as expected.
  3. The AAA login method has no usable local fallback when the remote authentication server fails.
  4. The selected login-only RADIUS integration does not provide the intended granular device command control.

Explanation

Correct Answer

C:

The evidence at the Redwood medical campus supports this condition: The AAA login method has no usable local fallback when the remote authentication server fails. The associated fix is: Use an authorized AAA method list with a local fallback after unavailable remote servers, preserving the existing remote-first policy.

Incorrect Answers

A:

This diagnoses a different mechanism: Authentication succeeded, but separate AAA authorization does not permit the requested command. The reported symptom at the Redwood medical campus instead concerns aaa local fallback on server outage.

B:

That diagnosis belongs to copp protocol classification error, while the observation at the Redwood medical campus points to aaa local fallback on server outage.

D:

This diagnoses a different mechanism: The selected login-only RADIUS integration does not provide the intended granular device command control. The reported symptom at the Redwood medical campus instead concerns aaa local fallback on server outage.

Question 313

At the Clearwater library district, a secure AAA login method list exists on R-CLW-EDGE1, yet VTY access is still authenticated by an older default policy. Which underlying technical condition best accounts for this evidence?

  1. The configured named method list is not bound to the management access path where authentication occurs.
  2. Authentication and authorization are active, but command-level accounting records are not being collected.
  3. The ACL attachment direction or interface does not intersect the targeted packet flow.
  4. The selected login-only RADIUS integration does not provide the intended granular device command control.

Explanation

Correct Answer

A:

The evidence at the Clearwater library district supports this condition: The configured named method list is not bound to the management access path where authentication occurs. The associated fix is: Apply the intended named AAA login method list to the correct VTY line configuration.

Incorrect Answers

B:

This diagnoses a different mechanism: Authentication and authorization are active, but command-level accounting records are not being collected. The reported symptom at the Clearwater library district instead concerns aaa method list applied to wrong lines.

C:

That diagnosis belongs to extended acl inbound/outbound orientation, while the observation at the Clearwater library district points to aaa method list applied to wrong lines.

D:

The observation at the Clearwater library district does not point to tacacs+ versus radius protocol roles; it points to a different condition. The configured named method list is not bound to the management access path where authentication occurs.

Question 314

At the Bayview university campus, a secure AAA login method list exists on R-BAY-DIST1, yet VTY access is still authenticated by an older default policy. Which underlying technical condition best accounts for this evidence?

  1. The configured named method list is not bound to the management access path where authentication occurs.
  2. Packets that do not match an ACL permit statement are denied by the implicit final rule.
  3. A standard IPv4 ACL matches source addresses, so placement can affect more destinations than intended.
  4. Strict uRPF rejects packets whose incoming interface is not the router's reverse best path toward the source.

Explanation

Correct Answer

A:

This diagnosis fits the symptoms at the Bayview university campus. The configured named method list is not bound to the management access path where authentication occurs. The remedial action is: Apply the intended named AAA login method list to the correct VTY line configuration.

Incorrect Answers

B:

The observation at the Bayview university campus does not point to ipv4 acl implicit deny; it points to a different condition. The configured named method list is not bound to the management access path where authentication occurs.

C:

This diagnoses a different mechanism: A standard IPv4 ACL matches source addresses, so placement can affect more destinations than intended. The reported symptom at the Bayview university campus instead concerns aaa method list applied to wrong lines.

D:

That diagnosis belongs to urpf strict in asymmetric topology, while the observation at the Bayview university campus points to aaa method list applied to wrong lines.

Question 315

At the Foothill municipal site, a user successfully authenticates to R-FOO-DIST1 but receives a command-authorization denial for a permitted maintenance command. Which underlying technical condition best accounts for this evidence?

  1. Authentication succeeded, but separate AAA authorization does not permit the requested command.
  2. Packets that do not match an ACL permit statement are denied by the implicit final rule.
  3. A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately.
  4. The AAA login method has no usable local fallback when the remote authentication server fails.

Explanation

Correct Answer

A:

Authentication succeeded, but separate AAA authorization does not permit the requested command. That explains the specific symptom at the Foothill municipal site. A direct corrective action is: Correct the relevant exec or command authorization policy after confirming the operator's approved privileges.

Incorrect Answers

B:

That diagnosis belongs to ipv4 acl implicit deny, while the observation at the Foothill municipal site points to aaa authorization versus authentication.

C:

The observation at the Foothill municipal site does not point to ipv6 dhcpv6 guard; it points to a different condition. Authentication succeeded, but separate AAA authorization does not permit the requested command.

D:

This diagnoses a different mechanism: The AAA login method has no usable local fallback when the remote authentication server fails. The reported symptom at the Foothill municipal site instead concerns aaa authorization versus authentication.

Question 316

At the Highland government office, a user successfully authenticates to R-HIG-RT1 but receives a command-authorization denial for a permitted maintenance command. Which underlying technical condition best accounts for this evidence?

  1. The IPv6 access-classification policy is not attached to the traffic ingress path being protected.
  2. The control-plane classifier does not match OSPF packets as expected.
  3. Packets that do not match an ACL permit statement are denied by the implicit final rule.
  4. Authentication succeeded, but separate AAA authorization does not permit the requested command.

Explanation

Correct Answer

D:

The evidence at the Highland government office supports this condition: Authentication succeeded, but separate AAA authorization does not permit the requested command. The associated fix is: Correct the relevant exec or command authorization policy after confirming the operator's approved privileges.

Incorrect Answers

A:

The observation at the Highland government office does not point to ipv6 acl interface direction; it points to a different condition. Authentication succeeded, but separate AAA authorization does not permit the requested command.

B:

This diagnoses a different mechanism: The control-plane classifier does not match OSPF packets as expected. The reported symptom at the Highland government office instead concerns aaa authorization versus authentication.

C:

That diagnosis belongs to ipv4 acl implicit deny, while the observation at the Highland government office points to aaa authorization versus authentication.

Question 317

At the Brookstone distribution branch, a network team needs detailed device command authorization and command accounting but deploys only a basic RADIUS login profile. Which underlying technical condition best accounts for this evidence?

  1. The AAA login method has no usable local fallback when the remote authentication server fails.
  2. A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately.
  3. The control-plane classifier does not match OSPF packets as expected.
  4. The selected login-only RADIUS integration does not provide the intended granular device command control.

Explanation

Correct Answer

D:

This diagnosis fits the symptoms at the Brookstone distribution branch. The selected login-only RADIUS integration does not provide the intended granular device command control. The remedial action is: Use a management AAA design with TACACS+ command authorization and accounting where required by policy.

Incorrect Answers

A:

That diagnosis belongs to aaa local fallback on server outage, while the observation at the Brookstone distribution branch points to tacacs+ versus radius protocol roles.

B:

The observation at the Brookstone distribution branch does not point to ipv6 dhcpv6 guard; it points to a different condition. The selected login-only RADIUS integration does not provide the intended granular device command control.

C:

This diagnoses a different mechanism: The control-plane classifier does not match OSPF packets as expected. The reported symptom at the Brookstone distribution branch instead concerns tacacs+ versus radius protocol roles.

Question 318

At the Silverstream data center, a network team needs detailed device command authorization and command accounting but deploys only a basic RADIUS login profile. Which underlying technical condition best accounts for this evidence?

  1. Strict uRPF rejects packets whose incoming interface is not the router's reverse best path toward the source.
  2. Packets that do not match an ACL permit statement are denied by the implicit final rule.
  3. The selected login-only RADIUS integration does not provide the intended granular device command control.
  4. A restrictive control-plane policing class is discarding legitimate BGP packets.

Explanation

Correct Answer

C:

The evidence at the Silverstream data center supports this condition: The selected login-only RADIUS integration does not provide the intended granular device command control. The associated fix is: Use a management AAA design with TACACS+ command authorization and accounting where required by policy.

Incorrect Answers

A:

This diagnoses a different mechanism: Strict uRPF rejects packets whose incoming interface is not the router's reverse best path toward the source. The reported symptom at the Silverstream data center instead concerns tacacs+ versus radius protocol roles.

B:

That diagnosis belongs to ipv4 acl implicit deny, while the observation at the Silverstream data center points to tacacs+ versus radius protocol roles.

D:

This diagnoses a different mechanism: A restrictive control-plane policing class is discarding legitimate BGP packets. The reported symptom at the Silverstream data center instead concerns tacacs+ versus radius protocol roles.

Question 319

At the Lakeside transit hub, an IPv4 ACL on R-LAK-CORE1 allows two explicit applications, but an otherwise legitimate management source loses connectivity after the ACL is applied. Which underlying technical condition best accounts for this evidence?

  1. Packets that do not match an ACL permit statement are denied by the implicit final rule.
  2. The IPv6 access-classification policy is not attached to the traffic ingress path being protected.
  3. A standard IPv4 ACL matches source addresses, so placement can affect more destinations than intended.
  4. Wildcard bits determine which address positions are ignored, and the current value does not represent the intended network.

Explanation

Correct Answer

A:

The evidence at the Lakeside transit hub supports this condition: Packets that do not match an ACL permit statement are denied by the implicit final rule. The associated fix is: Add a narrowly scoped permit for the authorized source and service above the implicit deny.

Incorrect Answers

B:

This diagnoses a different mechanism: The IPv6 access-classification policy is not attached to the traffic ingress path being protected. The reported symptom at the Lakeside transit hub instead concerns ipv4 acl implicit deny.

C:

That diagnosis belongs to standard acl source-only matching, while the observation at the Lakeside transit hub points to ipv4 acl implicit deny.

D:

The observation at the Lakeside transit hub does not point to ipv4 wildcard mask matching; it points to a different condition. Packets that do not match an ACL permit statement are denied by the implicit final rule.

Question 320

At the Southridge banking office, an IPv4 ACL on R-SRG-EDGE1 allows two explicit applications, but an otherwise legitimate management source loses connectivity after the ACL is applied. Which underlying technical condition best accounts for this evidence?

  1. Loose uRPF checks that a source route exists, not that the packet came on the best reverse-path interface.
  2. Packets that do not match an ACL permit statement are denied by the implicit final rule.
  3. A standard IPv4 ACL matches source addresses, so placement can affect more destinations than intended.
  4. Wildcard bits determine which address positions are ignored, and the current value does not represent the intended network.

Explanation

Correct Answer

B:

The evidence at the Southridge banking office supports this condition: Packets that do not match an ACL permit statement are denied by the implicit final rule. The associated fix is: Add a narrowly scoped permit for the authorized source and service above the implicit deny.

Incorrect Answers

A:

That diagnosis belongs to urpf loose versus strict source check, while the observation at the Southridge banking office points to ipv4 acl implicit deny.

C:

This diagnoses a different mechanism: A standard IPv4 ACL matches source addresses, so placement can affect more destinations than intended. The reported symptom at the Southridge banking office instead concerns ipv4 acl implicit deny.

D:

That diagnosis belongs to ipv4 wildcard mask matching, while the observation at the Southridge banking office points to ipv4 acl implicit deny.