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Exam2pass > CompTIA > CompTIA Certifications > N10-009 > N10-009 Online Practice Questions and Answers

N10-009 Online Practice Questions and Answers

Questions 4

A systems administrator is investigating why users cannot reach a Linux web server with a browser but can ping the server IP. The server is online, the web server process is running, and the link to the switch is up. Which of the following commands should the administrator run on the server first?

A. traceroute

B. netstat

C. tcpdump

D. arp

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Correct Answer: B

The netstat command provides information about network connections, routing tables, interface statistics, masquerade connections, and multicast memberships. Running netstat on the server can help the administrator verify that the web server process is listening on the expected port (e.g., port 80 for HTTP or port 443 for HTTPS) and that there are no issues with network connections. This is a crucial first step in diagnosing why the web server is not accessible via a browser.References: CompTIA Network+ study materials.

Questions 5

Which of the following is the correct order of components in a bottom-up approach for the three-tier hierarchical model?

A. Access, distribution, and core

B. Core, root, and distribution

C. Core, spine, and leaf

D. Access, core, and roof

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Correct Answer: A

The three-tier hierarchical model in network design consists of three layers: access, distribution, and core. The access layer is where devices like PCs and printers connect to the network. The distribution layer aggregates the data received

from the access layer switches before it is transmitted to the core layer, which is responsible for high-speed data transfer and routing. This approach improves scalability and performance in larger networks.

References: CompTIA Network+ Exam Objectives and official study guides.

Questions 6

Which of the following devices can operate in multiple layers of the OSI model?

A. Hub

B. Switch

C. Transceiver

D. Modem

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Correct Answer: B

Understanding Switches:

uk.co.certification.simulator.questionpool.PList@2a735533 Capabilities of Multilayer Switches:

Comparison with Other Devices:

Practical Application:

References:

CompTIA Network+ study materials on network devices and the OSI model.

Questions 7

Which of the following allows a remote user to connect to the network?

A. Command-line interface

B. API gateway

C. Client-to-site VPN

D. Jump box

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Correct Answer: C

A Client-to-Site VPN allows a remote user to securely connect to a company's internal network, providing access as if they were physically on-site.

Questions 8

A network engineer performed a migration to a new mail server. The engineer changed the MX record, verified the change was accurate, and confirmed the new mail server was reachable via the IP address in the A record. However, users are not receiving email.

Which of the following should the engineer have done to prevent the issue from occurring?

A. Change the email client configuration to match the MX record.

B. Reduce the TTL record prior to the MX record change.

C. Perform a DNS zone transfer prior to the MX record change.

D. Update the NS record to reflect the IP address change.

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Correct Answer: B

Understanding TTL (Time to Live):

uk.co.certification.simulator.questionpool.PList@5e5842cf Impact of TTL on DNS Changes:

Best Practice Before Making DNS Changes:

Verification of DNS Changes:

Comparison with Other Options:

References:

CompTIA Network+ study materials and DNS best practices.

Questions 9

Which of the following is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities?

A. Site-to-site VPN

B. SSH tunnel

C. API gateway

D. Dedicated line

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Correct Answer: A

A site-to-site VPN (Virtual Private Network) is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities. It allows secure communication over the internet by encrypting the data transmitted between the two locations. Site-to-site VPNs are a practical and economical solution for connecting geographically dispersed sites over the public internet while maintaining a high level of security.

Questions 10

A network engineer wants to establish a site-o-site VPN tunnel using a protocol that allows for both data confidentially and authentication. Which of the following is the best choice?

A. IKE

B. AH

C. ESP

D. IPSec

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Correct Answer: C

Questions 11

Which of the following copper wire standards utilizes four pairs of wires to achieve Gigabit Ethernet speeds?

A. 1000BASE-FX

B. 1000BASE-T

C. 1000BASE.LR

D. 1000BASE-SX

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Correct Answer: B

Questions 12

A company realizes that only half of its employees work in the office, and the employees who work from home no longer need a computer at the office. Which of the following security measures should the network administrator implement when removing a computer from a cubicle?

A. Disable DHCP on the computer being removed.

B. Place the switch port in a private VLAN.

C. Apply a firewall rule to block the computer's IP address.

D. Remove the employee's network access.

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Correct Answer: D

References

1: CompTIA Network+ N10-008 Cert Guide - O'Reilly Media

2: Network+ (Plus) Certification | CompTIA IT Certifications

3: 10 Ways to Secure Office Workstations - Computer Security

Questions 13

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

A. KVM size

B. Switch depth

C. Hard drive size

D. Cooling fan speed

E. Outlet amperage

F. Server height

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Correct Answer: BF

The size of a rack for installation depends on several factors, such as the available space, the power and cooling requirements, and the dimensions of the equipment to be installed. Two of the most important dimensions to consider are the switch depth and the server height. Switch depth refers to the length of the switch from front to back, which determines how much space is needed inside the rack. Server height refers to the vertical space occupied by the server, which is measured in rack units (RU) or U. One rack unit is equal to 1.75 inches. The height of the rack should be able to accommodate the total number of rack units needed for the servers and other devices, as well as some extra space for cable management and airflow. References: CompTIA Network+ N10-008 Cert Guide, Chapter 2, Section 2.5

Exam Code: N10-009
Exam Name: CompTIA Network+
Last Update: Jun 11, 2025
Questions: 390

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