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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

Cisco 300-410 Bundle $25.00
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Cisco 300-410 Practice Test 15

Question 140

At the Brookstone distribution branch, authorized SSH sessions to R-BRK-EDGE1 fail intermittently during routine automation runs, and the CoPP management class shows sustained packet drops. Which operational change most directly addresses the fault described?

  1. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources.
  2. Enable and verify AAA command accounting with a reachable, trusted logging/accounting destination.
  3. Tune the SSH-management CoPP class for the legitimate approved workload without removing protective rate limits.
  4. Enable IPv6 Router Advertisement Guard on untrusted ports with trusted router uplinks correctly identified.

Explanation

Correct Answer

C:

The fault at the Brookstone distribution branch has a specific cause. A too-small management control-plane policer drops permitted SSH traffic during ordinary operations. Tune the SSH-management CoPP class for the legitimate approved workload without removing protective rate limits. Confirm success against this result: Automated SSH sessions complete at the required rate while abusive traffic still triggers protection.

Incorrect Answers

A:

This could help where ipv6 dhcpv6 guard is the issue, but not for the evidence reported at the Brookstone distribution branch. A too-small management control-plane policer drops permitted SSH traffic during ordinary operations.

B:

That change targets aaa accounting gaps, not the reported copp management ssh rate-limiting fault at the Brookstone distribution branch. A too-small management control-plane policer drops permitted SSH traffic during ordinary operations.

D:

This could help where ipv6 rogue router advertisement is the issue, but not for the evidence reported at the Brookstone distribution branch. A too-small management control-plane policer drops permitted SSH traffic during ordinary operations.

Question 141

At the Southridge banking office, hosts on a campus VLAN adopt an unexpected IPv6 default gateway advertised by a device on an untrusted access port. Which operational change most directly addresses the fault described?

  1. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources.
  2. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port.
  3. Adjust the CoPP classification and authorized BGP control traffic rate according to measured demand and attack protection needs.
  4. Enable IPv6 Router Advertisement Guard on untrusted ports with trusted router uplinks correctly identified.

Explanation

Correct Answer

D:

The fault at the Southridge banking office has a specific cause. An untrusted access device is sending RAs that change hosts' IPv6 default-router selection. Enable IPv6 Router Advertisement Guard on untrusted ports with trusted router uplinks correctly identified. Confirm success against this result: A rogue RA is blocked at the access switch while authorized router advertisements continue.

Incorrect Answers

A:

This is appropriate for a different routing or network-control issue: A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately. The stated evidence at the Southridge banking office instead concerns ipv6 rogue router advertisement.

B:

This could help where ipv6 source guard and bindings is the issue, but not for the evidence reported at the Southridge banking office. An untrusted access device is sending RAs that change hosts' IPv6 default-router selection.

C:

That change targets copp control-plane bgp drops, not the reported ipv6 rogue router advertisement fault at the Southridge banking office. An untrusted access device is sending RAs that change hosts' IPv6 default-router selection.

Question 142

At the Lakeside transit hub, hosts on a campus VLAN adopt an unexpected IPv6 default gateway advertised by a device on an untrusted access port. Which operational change most directly addresses the fault described?

  1. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources.
  2. Enable IPv6 Router Advertisement Guard on untrusted ports with trusted router uplinks correctly identified.
  3. Use supported IPv6 ND inspection or snooping with trusted binding information on the access segment.
  4. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port.

Explanation

Correct Answer

B:

The fault at the Lakeside transit hub has a specific cause. An untrusted access device is sending RAs that change hosts' IPv6 default-router selection. Enable IPv6 Router Advertisement Guard on untrusted ports with trusted router uplinks correctly identified. Confirm success against this result: A rogue RA is blocked at the access switch while authorized router advertisements continue.

Incorrect Answers

A:

That change targets ipv6 dhcpv6 guard, not the reported ipv6 rogue router advertisement fault at the Lakeside transit hub. An untrusted access device is sending RAs that change hosts' IPv6 default-router selection.

C:

This could help where ipv6 neighbor discovery inspection is the issue, but not for the evidence reported at the Lakeside transit hub. An untrusted access device is sending RAs that change hosts' IPv6 default-router selection.

D:

That change targets ipv6 source guard and bindings, not the reported ipv6 rogue router advertisement fault at the Lakeside transit hub. An untrusted access device is sending RAs that change hosts' IPv6 default-router selection.

Question 143

At the Pinecrest freight terminal, endpoints receive unauthorized DHCPv6 information from a newly attached access-port device, despite having correct IPv6 Router Advertisement settings. Which operational change most directly addresses the fault described?

  1. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port.
  2. Use supported IPv6 ND inspection or snooping with trusted binding information on the access segment.
  3. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources.
  4. Adjust the CoPP classification and authorized BGP control traffic rate according to measured demand and attack protection needs.

Explanation

Correct Answer

C:

The fault at the Pinecrest freight terminal has a specific cause. A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources. Confirm success against this result: Unauthorized DHCPv6 replies are blocked while approved DHCPv6 service remains available.

Incorrect Answers

A:

This could help where ipv6 source guard and bindings is the issue, but not for the evidence reported at the Pinecrest freight terminal. A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately.

B:

That change targets ipv6 neighbor discovery inspection, not the reported ipv6 dhcpv6 guard fault at the Pinecrest freight terminal. A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately.

D:

This could help where copp control-plane bgp drops is the issue, but not for the evidence reported at the Pinecrest freight terminal. A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately.

Question 144

At the Westlake utility network, endpoints receive unauthorized DHCPv6 information from a newly attached access-port device, despite having correct IPv6 Router Advertisement settings. Which operational change most directly addresses the fault described?

  1. Use supported IPv6 ND inspection or snooping with trusted binding information on the access segment.
  2. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources.
  3. Adjust the CoPP classification and authorized BGP control traffic rate according to measured demand and attack protection needs.
  4. Tune the SSH-management CoPP class for the legitimate approved workload without removing protective rate limits.

Explanation

Correct Answer

B:

Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources. That directly addresses the documented condition at the Westlake utility network: A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately. Confirmation should show that unauthorized DHCPv6 replies are blocked while approved DHCPv6 service remains available.

Incorrect Answers

A:

This is appropriate for a different routing or network-control issue: Forged neighbor advertisement information can poison IPv6 neighbor mappings on the LAN. The stated evidence at the Westlake utility network instead concerns ipv6 dhcpv6 guard.

C:

That change targets copp control-plane bgp drops, not the reported ipv6 dhcpv6 guard fault at the Westlake utility network. A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately.

D:

This is appropriate for a different routing or network-control issue: A too-small management control-plane policer drops permitted SSH traffic during ordinary operations. The stated evidence at the Westlake utility network instead concerns ipv6 dhcpv6 guard.

Question 145

At the Bluewater clinical network, a hostile endpoint on an access VLAN spoofs Neighbor Discovery information and redirects traffic for a legitimate local IPv6 peer. Which operational change most directly addresses the fault described?

  1. Correct the control-plane class match to identify OSPF protocol 89 and keep its intended policy limits.
  2. Use supported IPv6 ND inspection or snooping with trusted binding information on the access segment.
  3. Adjust the CoPP classification and authorized BGP control traffic rate according to measured demand and attack protection needs.
  4. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port.

Explanation

Correct Answer

B:

The fault at the Bluewater clinical network has a specific cause. Forged neighbor advertisement information can poison IPv6 neighbor mappings on the LAN. Use supported IPv6 ND inspection or snooping with trusted binding information on the access segment. Confirm success against this result: Spoofed ND information is rejected and legitimate neighbor reachability remains stable.

Incorrect Answers

A:

That change targets copp protocol classification error, not the reported ipv6 neighbor discovery inspection fault at the Bluewater clinical network. Forged neighbor advertisement information can poison IPv6 neighbor mappings on the LAN.

C:

This could help where copp control-plane bgp drops is the issue, but not for the evidence reported at the Bluewater clinical network. Forged neighbor advertisement information can poison IPv6 neighbor mappings on the LAN.

D:

That change targets ipv6 source guard and bindings, not the reported ipv6 neighbor discovery inspection fault at the Bluewater clinical network. Forged neighbor advertisement information can poison IPv6 neighbor mappings on the LAN.

Question 146

At the Cedarfield retail branch, a hostile endpoint on an access VLAN spoofs Neighbor Discovery information and redirects traffic for a legitimate local IPv6 peer. Which operational change most directly addresses the fault described?

  1. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources.
  2. Correct the control-plane class match to identify OSPF protocol 89 and keep its intended policy limits.
  3. Adjust the CoPP classification and authorized BGP control traffic rate according to measured demand and attack protection needs.
  4. Use supported IPv6 ND inspection or snooping with trusted binding information on the access segment.

Explanation

Correct Answer

D:

Use supported IPv6 ND inspection or snooping with trusted binding information on the access segment. That directly addresses the documented condition at the Cedarfield retail branch: Forged neighbor advertisement information can poison IPv6 neighbor mappings on the LAN. Confirmation should show that spoofed ND information is rejected and legitimate neighbor reachability remains stable.

Incorrect Answers

A:

This could help where ipv6 dhcpv6 guard is the issue, but not for the evidence reported at the Cedarfield retail branch. Forged neighbor advertisement information can poison IPv6 neighbor mappings on the LAN.

B:

That change targets copp protocol classification error, not the reported ipv6 neighbor discovery inspection fault at the Cedarfield retail branch. Forged neighbor advertisement information can poison IPv6 neighbor mappings on the LAN.

C:

This is appropriate for a different routing or network-control issue: A restrictive control-plane policing class is discarding legitimate BGP packets. The stated evidence at the Cedarfield retail branch instead concerns ipv6 neighbor discovery inspection.

Question 147

At the Ironwood training campus, a device sends packets using an unassigned IPv6 source address on a port where endpoint identity and address bindings are known. Which operational change most directly addresses the fault described?

  1. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port.
  2. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources.
  3. Enable and verify AAA command accounting with a reachable, trusted logging/accounting destination.
  4. Enable IPv6 Router Advertisement Guard on untrusted ports with trusted router uplinks correctly identified.

Explanation

Correct Answer

A:

The fault at the Ironwood training campus has a specific cause. The network is not enforcing a source IPv6 address-to-port binding for endpoint traffic. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port. Confirm success against this result: Packets with authorized bound source addresses pass while spoofed sources are dropped.

Incorrect Answers

B:

This could help where ipv6 dhcpv6 guard is the issue, but not for the evidence reported at the Ironwood training campus. The network is not enforcing a source IPv6 address-to-port binding for endpoint traffic.

C:

That change targets aaa accounting gaps, not the reported ipv6 source guard and bindings fault at the Ironwood training campus. The network is not enforcing a source IPv6 address-to-port binding for endpoint traffic.

D:

This is appropriate for a different routing or network-control issue: An untrusted access device is sending RAs that change hosts' IPv6 default-router selection. The stated evidence at the Ironwood training campus instead concerns ipv6 source guard and bindings.

Question 148

At the Harborview media campus, a device sends packets using an unassigned IPv6 source address on a port where endpoint identity and address bindings are known. Which operational change most directly addresses the fault described?

  1. Tune the SSH-management CoPP class for the legitimate approved workload without removing protective rate limits.
  2. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port.
  3. Enable IPv6 Router Advertisement Guard on untrusted ports with trusted router uplinks correctly identified.
  4. Enable and verify AAA command accounting with a reachable, trusted logging/accounting destination.

Explanation

Correct Answer

B:

The fault at the Harborview media campus has a specific cause. The network is not enforcing a source IPv6 address-to-port binding for endpoint traffic. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port. Confirm success against this result: Packets with authorized bound source addresses pass while spoofed sources are dropped.

Incorrect Answers

A:

That change targets copp management ssh rate-limiting, not the reported ipv6 source guard and bindings fault at the Harborview media campus. The network is not enforcing a source IPv6 address-to-port binding for endpoint traffic.

C:

This could help where ipv6 rogue router advertisement is the issue, but not for the evidence reported at the Harborview media campus. The network is not enforcing a source IPv6 address-to-port binding for endpoint traffic.

D:

That change targets aaa accounting gaps, not the reported ipv6 source guard and bindings fault at the Harborview media campus. The network is not enforcing a source IPv6 address-to-port binding for endpoint traffic.

Question 149

At the Northport logistics site, device administrators authenticate successfully and use permitted commands, but the security team cannot reconstruct who ran a sensitive configuration command. Which operational change most directly addresses the fault described?

  1. Tune the SSH-management CoPP class for the legitimate approved workload without removing protective rate limits.
  2. Apply IPv6 Source Guard with valid address binding data on the relevant untrusted access port.
  3. Enable and verify AAA command accounting with a reachable, trusted logging/accounting destination.
  4. Correct the control-plane class match to identify OSPF protocol 89 and keep its intended policy limits.

Explanation

Correct Answer

C:

The fault at the Northport logistics site has a specific cause. Authentication and authorization are active, but command-level accounting records are not being collected. Enable and verify AAA command accounting with a reachable, trusted logging/accounting destination. Confirm success against this result: The test command produces an attributable record with identity, action and time at the accounting service.

Incorrect Answers

A:

This could help where copp management ssh rate-limiting is the issue, but not for the evidence reported at the Northport logistics site. Authentication and authorization are active, but command-level accounting records are not being collected.

B:

That change targets ipv6 source guard and bindings, not the reported aaa accounting gaps fault at the Northport logistics site. Authentication and authorization are active, but command-level accounting records are not being collected.

D:

This could help where copp protocol classification error is the issue, but not for the evidence reported at the Northport logistics site. Authentication and authorization are active, but command-level accounting records are not being collected.

Question 150

At the Hillcrest research lab, device administrators authenticate successfully and use permitted commands, but the security team cannot reconstruct who ran a sensitive configuration command. Which operational change most directly addresses the fault described?

  1. Apply DHCPv6 Guard on untrusted access ports, permitting only approved DHCPv6 server or relay sources.
  2. Correct the control-plane class match to identify OSPF protocol 89 and keep its intended policy limits.
  3. Adjust the CoPP classification and authorized BGP control traffic rate according to measured demand and attack protection needs.
  4. Enable and verify AAA command accounting with a reachable, trusted logging/accounting destination.

Explanation

Correct Answer

D:

The fault at the Hillcrest research lab has a specific cause. Authentication and authorization are active, but command-level accounting records are not being collected. Enable and verify AAA command accounting with a reachable, trusted logging/accounting destination. Confirm success against this result: The test command produces an attributable record with identity, action and time at the accounting service.

Incorrect Answers

A:

This is appropriate for a different routing or network-control issue: A rogue DHCPv6 responder can influence hosts even when router advertisements are controlled separately. The stated evidence at the Hillcrest research lab instead concerns aaa accounting gaps.

B:

This could help where copp protocol classification error is the issue, but not for the evidence reported at the Hillcrest research lab. Authentication and authorization are active, but command-level accounting records are not being collected.

C:

That change targets copp control-plane bgp drops, not the reported aaa accounting gaps fault at the Hillcrest research lab. Authentication and authorization are active, but command-level accounting records are not being collected.