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Free CompTIA N10-009 Exam Questions (page: 3)

Page 3 of 104
PDF with 513 Questions

SIMULATION

After a recent power outage, users are reporting performance issues accessing the application servers. Wireless users are also reporting intermittent Internet issues.

INSTRUCTIONS

Click on each tab at the top of the screen. Select a widget to view information, then use the drop-down menus to answer the associated questions.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.



















  1. See Explanation for the Answer.

Answer(s): A

Explanation:

WAN 1:
Uplink Speed: 10G

Total Usage: 26.969GB Up / 1.748GB Down

Average Throughput: 353MBps Up / 23.42MBps Down

Loss: 2.51%

Average Latency: 24ms

Jitter: 9.5ms

WAN 2:
Uplink Speed: 1G

Total Usage: 930GB Up / 138GB Down

Average Throughput: 12.21MBps Up / 1.82MBps Down

Loss: 0.01%

Average Latency: 11ms

Jitter: 3.9ms

Although WAN 1 offers greater bandwidth and throughput, it exhibits higher latency and jitter, which could detract from VoIP performance. In contrast, WAN 2, despite its lower bandwidth, offers much lower latency, nearly negligible packet loss, and reduced jitter. These characteristics are essential for VoIP applications, which demand consistent and quick packet delivery.

Therefore, for VoIP communications, WAN 2 is recommended due to its enhanced stability in latency and jitter handling, which are pivotal for the clarity and reliability of voice calls. WAN 1 could be better utilized for other tasks that require high bandwidth and are less affected by latency variations, such as large-scale data transfers.



Which of the following steps of the troubleshooting methodology would most likely include checking through each level of the OSI model after the problem has been identified?

  1. Establish a theory.
  2. Implement the solution.
  3. Create a plan of action.
  4. Verify functionality.

Answer(s): A

Explanation:

After identifying the problem, the next step in the CompTIA troubleshooting model is to establish a theory of probable cause. Technicians commonly walk up the OSI model to help form that theory and isolate which layer the issue may exist on.



While troubleshooting a VoIP handset connection, a technician's laptop is able to successfully connect to network resources using the same port. The technician needs to identify the port on the switch.
Which of the following should the technician use to determine the switch and port?

  1. LLDP
  2. IKE
  3. VLAN
  4. netstat

Answer(s): A

Explanation:

LLDP (Link Layer Discovery Protocol) provides device-to-device discovery information. It lets a technician identify which switch and port a device is connected to. The other options are unrelated to physical port discovery.



A network administrator needs to set up a file server to allow user access. The organization uses DHCP to assign IP addresses.
Which of the following is the best solution for the administrator to set up?

  1. A separate scope for the file server using a /32 subnet
  2. A reservation for the server based on the MAC address
  3. A static IP address within the DHCP IP range
  4. A SLAAC for the server

Answer(s): B

Explanation:

A DHCP reservation ensures the file server always receives the same IP address while remaining centrally managed. This avoids IP conflicts and keeps DNS mappings consistent.



Which of the following technologies are X.509 certificates most commonly associated with?

  1. PKI
  2. VLAN tagging
  3. LDAP
  4. MFA

Answer(s): A

Explanation:

X.509 certificates are the foundational standard used in Public Key Infrastructure (PKI). They authenticate identities in TLS/SSL, code signing, and secure email.



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