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Free CompTIA N10-009 Exam Questions (page: 13)

Page 13 of 104
PDF with 513 Questions

Which of the following most likely determines the size of a rack for installation? (Choose two.)

  1. KVM size
  2. Switch depth
  3. Hard drive size
  4. Cooling fan speed
  5. Outlet amperage
  6. Server height

Answer(s): B,F

Explanation:

Rack installation depends heavily on:

Switch depth – Racks must be deep enough to accommodate network switches and allow room for cabling.

Server height – Measured in rack units (U), this determines how many devices fit vertically in a rack.

Other options do not directly define rack size requirements.



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

Explanation:

SNMPv3 is the only version of SNMP that provides:

Authentication

Encryption

Integrity checking

SNMPv1/v2 lack security, and the other options do not offer encrypted device polling.



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

Explanation:

NS (Name Server) records at the registrar define which DNS servers host a domain’s authoritative zone. Changing the NS records moves DNS hosting to a different provider.



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

Explanation:

A signal power of –97 dB indicates severe signal attenuation. Splitters degrade coax signal strength significantly. Removing splitters helps restore acceptable signal levels for stable wired connectivity.



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

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

Answer(s): C

Explanation:

OSPF routers use multicast addresses (224.0.0.5 and 224.0.0.6) to send LSAs and hello packets to neighbors, instead of sending separate unicasts or generic broadcasts.



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