CompTIA Network+ N10-009 Exam Questions in PDF

Free CompTIA N10-009 Dumps Questions (page: 8)

A network administrator is planning to implement device monitoring to enhance network visibility. The security team requires that the solution provides authentication and encryption.
Which of the following meets these requirements?

  1. SIEM
  2. Syslog
  3. NetFlow
  4. SNMPv3

Answer(s): D



A network administrator needs to change where the outside DNS records are hosted.
Which of the following records should the administrator change at the registrar to accomplish this task?

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

Answer(s): A



A support agent receives a report that a remote user's wired devices are constantly disconnecting and have slow speeds. Upon inspection, the support agent sees that the user's coaxial modem has a signal power of - 97dB. Which of the following should the support agent recommend to troubleshoot the issue?

  1. Removing any splitters connected to the line
  2. Switching the devices to wireless
  3. Moving the devices closer to the modem
  4. Lowering the network speed

Answer(s): A



Which of the following does OSPF use to communicate routing updates?

  1. Unicast
  2. Anycast
  3. Multicast
  4. Broadcast

Answer(s): C



A storage network requires reduced overhead and increased efficiency for the amount of data being sent.
Which of the following should an engineer most likely configure to meet these requirements?

  1. Link speed
  2. Jumbo frames
  3. QoS
  4. 802.1q tagging

Answer(s): B



A security administrator is creating a new firewall object for a device with IP address 192.168.100.1/25. However, the firewall software only uses dotted decimal notation in configuration fields.
Which of the following is the correct subnet mask to use?

  1. 255.255.254.0
  2. 255.255.255.1
  3. 255.255.255.128
  4. 255.255.255.192

Answer(s): C



Which of the following disaster recovery metrics describes the average length of time a piece of equipment can be expected to operate normally?

  1. RPO
  2. RTO
  3. MTTR
  4. MTBF

Answer(s): D



A network administrator logs on to a router and sees an interface with an IP address of 10.61.52.34 255.255.255.252.
Which of the following best describes how this interface IP address is being used?

  1. As a point-to-point connection
  2. To connect to the internet
  3. As a virtual address for redundancy
  4. For out-of-band management

Answer(s): A



Share your comments for CompTIA N10-009 exam with other users:

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.

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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