Pass Your CompTIA N10-009 Exam Easy!

CompTIA N10-009 Exam Questions & Answers, Accurate & Verified By IT Experts

Instant Download, Free Fast Updates, 99.6% Pass Rate

N10-009 Premium Bundle

$79.99

CompTIA N10-009 Premium Bundle

N10-009 Premium File: 768 Questions & Answers

Last Update: Nov 14, 2026

N10-009 Training Course: 240 Video Lectures

N10-009 PDF Study Guide: 128 Pages

N10-009 Bundle gives you unlimited access to "N10-009" files. However, this does not replace the need for a .vce exam simulator. To download VCE exam simulator click here
CompTIA N10-009 Premium Bundle
CompTIA N10-009 Premium Bundle

N10-009 Premium File: 768 Questions & Answers

Last Update: Nov 14, 2026

N10-009 Training Course: 240 Video Lectures

N10-009 PDF Study Guide: 128 Pages

$79.99

N10-009 Bundle gives you unlimited access to "N10-009" files. However, this does not replace the need for a .vce exam simulator. To download your .vce exam simulator click here

CompTIA N10-009 Practice Test 46

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.

Question 451

A network team addresses this situation: A DHCP scope allocates an address already used by a statically configured switch gateway. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Release stale test leases and confirm valid new leases appear.
  2. Query alias chain and test its resolved endpoint after the canonical address changes.
  3. Inspect pool boundaries and offer results from fresh clients.
  4. Capture Discover and relayed request at the server.

Explanation

Correct Answer

C:

No offers within the excluded range validate the rule.

Incorrect Answers

A:

DHCP assigns client network parameters through a supported lease exchange. It does not inspect pool boundaries and offer results from fresh clients.

B:

Query alias chain and test its resolved endpoint after the canonical address changes. It does not inspect pool boundaries and offer results from fresh clients.

D:

Capture Discover and relayed request at the server. It does not inspect pool boundaries and offer results from fresh clients.

Question 452

A network team observes: An IPv6 laptop forms a link-local address but not a global unicast address on a configured SLAAC network. What is the MOST appropriate corrective action or technical decision?

  1. Publish the correct AAAA record for the target IPv6 address.
  2. Configure DHCP relay or IP helper on the client-facing routed interface.
  3. Expand or reclaim authorized scope capacity after checking subnet sizing.
  4. Enable correct IPv6 router advertisements on the intended segment.

Explanation

Correct Answer

D:

SLAAC uses advertised IPv6 prefixes to generate addresses. Router advertisements lack the required prefix or are blocked.

Incorrect Answers

A:

Publishing the correct AAAA record for the target IPv6 address would not enable correct IPv6 router advertisements on the intended segment.

B:

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

C:

Expanding or reclaim authorized scope capacity after checking subnet sizing would not enable correct IPv6 router advertisements on the intended segment.

Question 453

A network team addresses this situation: An IPv6 laptop forms a link-local address but not a global unicast address on a configured SLAAC network. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Capture RA packets and verify a global IPv6 address and default router.
  2. Query the authoritative name and connect using the returned AAAA address.
  3. Attempt an invalid authenticated time response and confirm rejection.
  4. Release stale test leases and confirm valid new leases appear.

Explanation

Correct Answer

A:

Communication between different IP subnets requires a routed interface or gateway rather than Layer 2 bridging alone. Verification of this result involves capturing RA packets and verify a global IPv6 address and default router.

Incorrect Answers

B:

Answer and connection verify IPv6 name resolution. That check cannot demonstrate an authorized inter-subnet routed path.

C:

Attempt an invalid authenticated time response and confirm rejection. That check cannot demonstrate an authorized inter-subnet routed path.

D:

DHCP assigns client network parameters through a supported lease exchange. That check cannot demonstrate an authorized inter-subnet routed path.

Question 454

A network specialist investigates this evidence: An IPv6 laptop forms a link-local address but not a global unicast address on a configured SLAAC network. Which underlying condition BEST explains the observed failure or requirement?

  1. The hostname lacks the proper IPv6 DNS resource record.
  2. Router advertisements lack the required prefix or are blocked.
  3. The time protocol traffic lacks appropriate authentication.
  4. The DHCP scope has exhausted allocatable leases.

Explanation

Correct Answer

B:

Router advertisements lack the required prefix or are blocked. SLAAC uses advertised IPv6 prefixes to generate addresses.

Incorrect Answers

A:

DNS resolution maps hostnames to records and can fail independently of packet forwarding. That does not establish an authorized inter-subnet routed path.

C:

The time protocol traffic lacks appropriate authentication. That does not establish an authorized inter-subnet routed path.

D:

DHCP assigns client network parameters through a supported lease exchange. The missing change involves router advertisements lack the required prefix or are blocked.

Question 455

A network team observes: An IPv6 client can reach a server's IPv6 literal but its name only returns an IPv4 A record. What is the MOST appropriate corrective action or technical decision?

  1. Configure a trusted DNS-over-HTTPS endpoint and enforce client resolution policy.
  2. Create a suitable CNAME alias where record-set restrictions permit.
  3. Publish the correct AAAA record for the target IPv6 address.
  4. Plan DNS TTL reduction before migration and refresh caches in a controlled way.

Explanation

Correct Answer

C:

AAAA records map names to IPv6 destinations. The hostname lacks the proper ipv6 dns resource record.

Incorrect Answers

A:

The hostname lacks the proper IPv6 DNS resource record.

B:

Creating a suitable CNAME alias where record-set restrictions permit would not publish the correct AAAA record for the target IPv6 address.

D:

Planning DNS TTL reduction would not publish the correct AAAA record for the target IPv6 address.

Question 456

A network team addresses this situation: An IPv6 client can reach a server's IPv6 literal but its name only returns an IPv4 A record. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Capture DNS requests and confirm encrypted HTTPS to the approved resolver.
  2. Query MX from an external resolver and deliver a test message.
  3. Query recursive resolvers after TTL expiry and verify current record.
  4. Query the authoritative name and connect using the returned AAAA address.

Explanation

Correct Answer

D:

Answer and connection verify IPv6 name resolution.

Incorrect Answers

A:

Observed endpoint and lack of plaintext queries prove DoH use. That check cannot demonstrate query the authoritative name and connect using the returned AAAA address.

B:

MX response and mail receipt validate routing. That check cannot demonstrate query the authoritative name and connect using the returned AAAA address.

C:

DNS resolution maps hostnames to records and can fail independently of packet forwarding. That check cannot demonstrate query the authoritative name and connect using the returned AAAA address.

Question 457

A network specialist investigates this evidence: An IPv6 client can reach a server's IPv6 literal but its name only returns an IPv4 A record. Which underlying condition BEST explains the observed failure or requirement?

  1. The hostname lacks the proper IPv6 DNS resource record.
  2. The alias is manually configured with stale separate addresses.
  3. Resolver transport is not using the mandated encrypted protocol.
  4. Router advertisements lack the required prefix or are blocked.

Explanation

Correct Answer

A:

The hostname lacks the proper IPv6 DNS resource record. AAAA records map names to IPv6 destinations.

Incorrect Answers

B:

The alias is manually configured with stale separate addresses. That does not establish correct hostname resolution for the destination.

C:

DNS resolution maps hostnames to records and can fail independently of packet forwarding.

D:

SLAAC uses advertised IPv6 prefixes to generate addresses. That does not establish correct hostname resolution for the destination.

Question 458

A network team observes: Inbound email for a new domain fails because its DNS zone contains only A records for its website. What is the MOST appropriate corrective action or technical decision?

  1. Create a suitable CNAME alias where record-set restrictions permit.
  2. Publish valid MX records pointing to the intended mail exchangers.
  3. Enable validating DNSSEC resolution and maintain trust anchors appropriately.
  4. Publish the correct AAAA record for the target IPv6 address.

Explanation

Correct Answer

B:

MX controls mail routing independently of a web host A record. The mail domain lacks an appropriate mx destination.

Incorrect Answers

A:

Creating a suitable CNAME alias where record-set restrictions permit would not publish valid MX records pointing to the intended mail exchangers.

C:

Enabling validating DNSSEC resolution and maintaining trust anchors appropriately would not publish valid MX records pointing to the intended mail exchangers.

D:

Publishing the correct AAAA record for the target IPv6 address would not publish valid MX records pointing to the intended mail exchangers.

Question 459

A network team addresses this situation: Inbound email for a new domain fails because its DNS zone contains only A records for its website. After the corrective action, which test or result BEST verifies that the problem is resolved?

  1. Send a deliberately invalid-signature test and confirm validation failure.
  2. Query the authoritative name and connect using the returned AAAA address.
  3. Query MX from an external resolver and deliver a test message.
  4. Query alias chain and test its resolved endpoint after the canonical address changes.

Explanation

Correct Answer

C:

MX response and mail receipt validate routing.

Incorrect Answers

A:

Rejection of bogus data demonstrates integrity verification. That check cannot demonstrate correct hostname resolution for the destination.

B:

Answer and connection verify IPv6 name resolution. That check cannot demonstrate correct hostname resolution for the destination.

D:

Query alias chain and test its resolved endpoint after the canonical address changes. That check cannot demonstrate correct hostname resolution for the destination.

Question 460

A network specialist investigates this evidence: Inbound email for a new domain fails because its DNS zone contains only A records for its website. Which underlying condition BEST explains the observed failure or requirement?

  1. The resolver is not checking DNSSEC chain-of-trust signatures.
  2. The alias is manually configured with stale separate addresses.
  3. The hostname lacks the proper IPv6 DNS resource record.
  4. The mail domain lacks an appropriate MX destination.

Explanation

Correct Answer

D:

The mail domain lacks an appropriate MX destination. MX controls mail routing independently of a web host A record.

Incorrect Answers

A:

DNS resolution maps hostnames to records and can fail independently of packet forwarding. That does not establish the mail domain lacks an appropriate MX destination.

B:

The alias is manually configured with stale separate addresses. That does not establish the mail domain lacks an appropriate MX destination.

C:

DNS resolution maps hostnames to records and can fail independently of packet forwarding. The missing change involves the mail domain lacks an appropriate MX destination.


CompTIA Network+ (N10-009) Practice Tests

Purchase Individually

N10-009 Premium File

Premium File
N10-009 Premium File
768 Q&A
$76.99$69.99

N10-009 Training Video Course

Training Course
N10-009 Training Video Course
240 Lectures
$27.49$24.99

N10-009 Study Guide

Study Guide
N10-009 Study Guide
128 PDF Pages
$27.49$24.99

Site Search:

 

VISA, MasterCard, AmericanExpress, UnionPay

SPECIAL OFFER: GET 10% OFF

ExamCollection Premium

ExamCollection Premium Files

Pass your Exam with ExamCollection's PREMIUM files!

  • ExamCollection Certified Safe Files
  • Guaranteed to have ACTUAL Exam Questions
  • Up-to-Date Exam Study Material - Verified by Experts
  • Instant Downloads
Enter Your Email Address to Receive Your 10% Off Discount Code
A Confirmation Link will be sent to this email address to verify your login
We value your privacy. We will not rent or sell your email address

SPECIAL OFFER: GET 10% OFF

Use Discount Code:

MIN10OFF

A confirmation link was sent to your e-mail.
Please check your mailbox for a message from support@examcollection.com and follow the directions.

Next

Download Free Demo of VCE Exam Simulator

Experience Avanset VCE Exam Simulator for yourself.

Simply submit your e-mail address below to get started with our interactive software demo of your free trial.

Free Demo Limits: In the demo version you will be able to access only first 5 questions from exam.