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Free CompTIA N10-009 Exam Questions (page: 14)

Page 14 of 104
PDF with 513 Questions

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

Explanation:

Jumbo frames increase the Ethernet MTU (for example, to 9000 bytes), which reduces header overhead per byte of data and improves efficiency for large storage transfers (SAN, iSCSI, etc.).



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

Explanation:

A /25 prefix means 25 bits of 1s in the mask:

11111111.11111111.11111111.10000000 → 255.255.255.128

So /25 corresponds to 255.255.255.128.



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

Explanation:

MTBF (Mean Time Between Failures) is the predicted average time that a device operates correctly between failures. It describes expected uptime/operating life, which is exactly what the question asks.



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

Explanation:

A subnet mask of 255.255.255.252 (/30) provides 4 addresses total (2 usable hosts). This /30 is typically used on point-to-point links between two routers, which matches option A.



A network technician is troubleshooting a faulty NIC and tests the theory.
Which of the following should the technician do next?

  1. Develop a theory.
  2. Establish a plan of action.
  3. Implement the solution.
  4. Document the findings.

Answer(s): B

Explanation:

After confirming the theory, the next troubleshooting step is to establish a plan of action before implementing the fix.



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