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CompTIA N10-009 Practice Test 45

Question 440

A network specialist investigates this evidence: A nightly backup job reports success yet no one has restored a complete application from it. Which underlying condition BEST explains the observed failure or requirement?

  1. Only one node should normally serve the role.
  2. The recovery requirement permits lengthy equipment provisioning.
  3. A passive-only backup wastes available active capacity.
  4. Backup completion is not proof of recoverability.

Explanation

Correct Answer

D:

Backup completion is not proof of recoverability. Recovery requires usable application state and dependencies.

Incorrect Answers

A:

Only one node should normally serve the role. That does not establish backup completion is not proof of recoverability.

B:

The recovery requirement permits lengthy equipment provisioning. That does not establish backup completion is not proof of recoverability.

C:

A passive-only backup wastes available active capacity. That does not establish backup completion is not proof of recoverability.

Question 441

A network team observes: Client requests reach DHCP but the server logs no free addresses in the correct pool. What is the MOST appropriate corrective action or technical decision?

  1. Expand or reclaim authorized scope capacity after checking subnet sizing.
  2. Configure DHCP relay or IP helper on the client-facing routed interface.
  3. Exclude all approved static addresses from the assignable DHCP range.
  4. Plan DNS TTL reduction before migration and refresh caches in a controlled way.

Explanation

Correct Answer

A:

An exhausted lease pool cannot serve new clients. The dhcp scope has exhausted allocatable leases.

Incorrect Answers

B:

Configuring DHCP relay or IP helper on the client-facing routed interface would not expand or reclaim authorized scope capacity after checking subnet sizing. An exhausted lease pool cannot serve new clients.

C:

Excluding all approved static addresses from the assignable DHCP range would not expand or reclaim authorized scope capacity after checking subnet sizing. An exhausted lease pool cannot serve new clients.

D:

Planning DNS TTL reduction would not expand or reclaim authorized scope capacity after checking subnet sizing. An exhausted lease pool cannot serve new clients.

Question 442

A network team addresses this situation: Client requests reach DHCP but the server logs no free addresses in the correct pool. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Capture Discover and relayed request at the server.
  2. Release stale test leases and confirm valid new leases appear.
  3. Inspect pool boundaries and offer results from fresh clients.
  4. Query recursive resolvers after TTL expiry and verify current record.

Explanation

Correct Answer

B:

DHCP assigns client network parameters through a supported lease exchange. Verification of this result involves release stale test leases and confirm valid new leases appear.

Incorrect Answers

A:

Capture Discover and relayed request at the server. That check cannot demonstrate successful client IP addressing from the correct scope.

C:

No offers within the excluded range validate the rule. That check cannot demonstrate successful client IP addressing from the correct scope.

D:

DNS resolution maps hostnames to records and can fail independently of packet forwarding. That check cannot demonstrate successful client IP addressing from the correct scope.

Question 443

A network specialist investigates this evidence: Client requests reach DHCP but the server logs no free addresses in the correct pool. Which underlying condition BEST explains the observed failure or requirement?

  1. Routers do not normally forward broadcast Discover requests.
  2. The static IP was not excluded from the dynamic pool.
  3. The DHCP scope has exhausted allocatable leases.
  4. DNS cache has a valid but stale record.

Explanation

Correct Answer

C:

The DHCP scope has exhausted allocatable leases. An exhausted lease pool cannot serve new clients.

Incorrect Answers

A:

Communication between different IP subnets requires a routed interface or gateway rather than Layer 2 bridging alone. The missing change involves the DHCP scope has exhausted allocatable leases.

B:

The static IP was not excluded from the dynamic pool.

D:

DNS resolution maps hostnames to records and can fail independently of packet forwarding. That does not establish successful client IP addressing from the correct scope.

Question 444

A network team observes: Clients on VLAN 70 broadcast DHCP Discover but the DHCP server is several routed hops away and receives nothing. What is the MOST appropriate corrective action or technical decision?

  1. Expand or reclaim authorized scope capacity after checking subnet sizing.
  2. Create a reservation tied to the printer's stable DHCP identifier.
  3. Enable correct IPv6 router advertisements on the intended segment.
  4. Configure DHCP relay or IP helper on the client-facing routed interface.

Explanation

Correct Answer

D:

Relay forwards client messages to a remote server as unicast. Routers do not normally forward broadcast discover requests.

Incorrect Answers

A:

Expanding or reclaim authorized scope capacity after checking subnet sizing would not configure DHCP relay or IP helper on the client-facing routed interface.

B:

Creating a reservation tied to the printer's stable DHCP identifier would not configure DHCP relay or IP helper on the client-facing routed interface.

C:

Enabling correct IPv6 router advertisements on the intended segment would not configure DHCP relay or IP helper on the client-facing routed interface.

Question 445

A network team addresses this situation: Clients on VLAN 70 broadcast DHCP Discover but the DHCP server is several routed hops away and receives nothing. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Capture Discover and relayed request at the server.
  2. Release stale test leases and confirm valid new leases appear.
  3. Renew the lease repeatedly and confirm the reserved address.
  4. Inspect pool boundaries and offer results from fresh clients.

Explanation

Correct Answer

A:

Capture Discover and relayed request at the server.

Incorrect Answers

B:

DHCP assigns client network parameters through a supported lease exchange. It does not capture Discover and relayed request at the server.

C:

DHCP assigns client network parameters through a supported lease exchange. Verification of this result involves capturing Discover and relayed request at the server.

D:

No offers within the excluded range validate the rule. It does not capture Discover and relayed request at the server.

Question 446

A network specialist investigates this evidence: Clients on VLAN 70 broadcast DHCP Discover but the DHCP server is several routed hops away and receives nothing. Which underlying condition BEST explains the observed failure or requirement?

  1. The DHCP scope has exhausted allocatable leases.
  2. Routers do not normally forward broadcast Discover requests.
  3. A dynamic pool can assign a different address after lease changes.
  4. The static IP was not excluded from the dynamic pool.

Explanation

Correct Answer

B:

Routers do not normally forward broadcast Discover requests. Relay forwards client messages to a remote server as unicast.

Incorrect Answers

A:

DHCP assigns client network parameters through a supported lease exchange. That does not establish an authorized inter-subnet routed path.

C:

DHCP assigns client network parameters through a supported lease exchange. The missing change involves routers do not normally forward broadcast Discover requests.

D:

The static IP was not excluded from the dynamic pool. The missing change involves routers do not normally forward broadcast Discover requests.

Question 447

A network team observes: A printer must keep the same IP while continuing to use DHCP central management. What is the MOST appropriate corrective action or technical decision?

  1. Expand or reclaim authorized scope capacity after checking subnet sizing.
  2. Configure DHCP relay or IP helper on the client-facing routed interface.
  3. Create a reservation tied to the printer's stable DHCP identifier.
  4. Enable correct IPv6 router advertisements on the intended segment.

Explanation

Correct Answer

C:

Reservation provides consistent DHCP allocation without hardcoding host config. A dynamic pool can assign a different address after lease changes.

Incorrect Answers

A:

Expanding or reclaim authorized scope capacity after checking subnet sizing would not create a reservation tied to the printer's stable DHCP identifier.

B:

Configuring DHCP relay or IP helper on the client-facing routed interface would not create a reservation tied to the printer's stable DHCP identifier.

D:

Enabling correct IPv6 router advertisements on the intended segment would not create a reservation tied to the printer's stable DHCP identifier.

Question 448

A network team addresses this situation: A printer must keep the same IP while continuing to use DHCP central management. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Capture Discover and relayed request at the server.
  2. Release stale test leases and confirm valid new leases appear.
  3. Query recursive resolvers after TTL expiry and verify current record.
  4. Renew the lease repeatedly and confirm the reserved address.

Explanation

Correct Answer

D:

DHCP assigns client network parameters through a supported lease exchange. Verification of this result involves renew the lease repeatedly and confirm the reserved address.

Incorrect Answers

A:

Capture Discover and relayed request at the server. Verification of this result involves renew the lease repeatedly and confirm the reserved address.

B:

DHCP assigns client network parameters through a supported lease exchange. Verification of this result involves renew the lease repeatedly and confirm the reserved address. The observed condition is a network team addresses this situation: A printer must keep the same IP while continuing to use DHCP central management. After the corrective action,.

C:

DNS resolution maps hostnames to records and can fail independently of packet forwarding. Verification of this result involves renew the lease repeatedly and confirm the reserved address.

Question 449

A network specialist investigates this evidence: A printer must keep the same IP while continuing to use DHCP central management. Which underlying condition BEST explains the observed failure or requirement?

  1. A dynamic pool can assign a different address after lease changes.
  2. The DHCP scope has exhausted allocatable leases.
  3. Routers do not normally forward broadcast Discover requests.
  4. The hostname lacks the proper IPv6 DNS resource record.

Explanation

Correct Answer

A:

A dynamic pool can assign a different address after lease changes. Reservation provides consistent DHCP allocation without hardcoding host config.

Incorrect Answers

B:

DHCP assigns client network parameters through a supported lease exchange. Preventing this failure involves a dynamic pool can assign a different address after lease changes.

C:

Communication between different IP subnets requires a routed interface or gateway rather than Layer 2 bridging alone. Preventing this failure involves a dynamic pool can assign a different address after lease changes.

D:

DNS resolution maps hostnames to records and can fail independently of packet forwarding. It would leave successful client IP addressing from the correct scope without the specified safeguard.

Question 450

A network team observes: A DHCP scope allocates an address already used by a statically configured switch gateway. What is the MOST appropriate corrective action or technical decision?

  1. Expand or reclaim authorized scope capacity after checking subnet sizing.
  2. Exclude all approved static addresses from the assignable DHCP range.
  3. Create a suitable CNAME alias where record-set restrictions permit.
  4. Configure DHCP relay or IP helper on the client-facing routed interface.

Explanation

Correct Answer

B:

DHCP must not offer addresses reserved for infrastructure. The static ip was not excluded from the dynamic pool.

Incorrect Answers

A:

Expanding or reclaim authorized scope capacity after checking subnet sizing would not exclude all approved static addresses from the assignable DHCP range.

C:

Creating a suitable CNAME alias where record-set restrictions permit would not exclude all approved static addresses from the assignable DHCP range.

D:

Configuring DHCP relay or IP helper on the client-facing routed interface would not exclude all approved static addresses from the assignable DHCP range.


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