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CompTIA Network+ N10-009 Dumps in PDF

Free CompTIA N10-009 Real Questions (page: 17)

N10-009 PDF — 724 Questions

A company's marketing team created a new application and would like to create a DNS record for newapplication.comptia.org that always resolves to the same address as wwww.comptia.org.
Which of the following records should the administrator use?

  1. SOA
  2. MX
  3. CNAME
  4. NS

Answer(s): C



A network administrator wants to implement security zones in the corporate network to control access to only individuals inside of the corporation.
Which of the following security zones is the best solution?

  1. Extranet
  2. Trusted
  3. VPN
  4. Public

Answer(s): B



Which of the following network devices converts wireless signals to electronic signals?

  1. Router
  2. Firewall
  3. Access point
  4. Load balancer

Answer(s): C



A network administrator deployed wireless networking in the office area.
When users visit the outdoor patio and try to download emails with large attachments or stream training videos, they notice buffering issues.
Which of the following is the most likely cause?

  1. Network congestion
  2. Wireless interference
  3. Signal degradation
  4. Client disassociation

Answer(s): C



Which of the following activities would have groups from different departments evaluate the disaster recovery process?

  1. Validation test
  2. SLA alignment
  3. Tabletop exercises
  4. Active-active approach

Answer(s): C



Which of the following routing protocols uses an autonomous system number?

  1. IS-IS
  2. OSPF
  3. BGP
  4. EIGRP

Answer(s): C



Which of the following is a characteristic of the application layer?

  1. It relies upon other layers for packet delivery.
  2. It checks independently for packet loss.
  3. It encrypts data in transit.
  4. It performs address translation.

Answer(s): A



Which of the following IP transmission types encrypts all of the transmitted data?

  1. ESP
  2. AH
  3. GRE
  4. UDP
  5. TCP

Answer(s): A



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O
onibokun10
4/13/2026 7:50:14 PM

Question 129:
Correct answer: CNAME

  • A CNAME record creates an alias for a domain, so newapplication.comptia.org will resolve to whatever IP address www.comptia.org resolves to. This ensures both names point to the same resource without duplicating the IP.
  • Why not the others:
- SOA defines authoritative information for a zone. - MX specifies mail exchange servers. - NS designates name servers for a zone.
  • Notes: The alias name (newapplication.comptia.org) should not have other records if you use a CNAME for it, and CNAMEs aren’t used for the zone apex (root) domain. This scenario uses a subdomain, so a CNAME is appropriate.

Swindon, United Kingdom
J
Joe
1/20/2026 8:25:24 AM

Passed this exam 2 days ago. These questions are in the exam. You are safe to use them.

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