Practice Free N10-008 Exam Online Questions
A security vendor needs to add a note to the DNS to validate the ownership of a company domain before services begin.
Which of the following records did the security company MOST likely ask the company to configure?
- A . TXT
- B . AAAA
- C . CNAME
- D . SRV
A
Explanation:
TXT stands for Text and is a type of DNS record that can store arbitrary text data associated with a domain name. TXT records can be used for various purposes, such as verifying the ownership of a domain, providing information about a domain, or implementing security mechanisms such as SPF (Sender Policy Framework) or DKIM (DomainKeys Identified Mail). In this scenario, the security company most likely asked the company to configure a TXT record with a specific value that can prove the ownership of the domain. AAAA stands for IPv6 Address and is a type of DNS record that maps a domain name to an IPv6 address. CNAME stands for Canonical Name and is a type of DNS record that maps an alias name to another name. SRV stands for Service and is a type of DNS record that specifies the location of a service on a network.
Reference: CompTIA Network+ Certification Exam Objectives Version 7.0 (N10-007), Objective 1.8:
Explain the purposes and use cases for advanced networking devices.
A technician is connecting DSL for a new customer. After installing and connecting the on-premises equipment, the technician verifies DSL synchronization. When connecting to a workstation, however,
the link LEDs on the workstation and modem do not light up.
Which of the following should the technician perform during troubleshooting?
- A . Identify the switching loops between the modem and the workstation.
- B . Check for asymmetrical routing on the modem.
- C . Look for a rogue DHCP server on the network.
- D . Replace the cable connecting the modem and the workstation.
D
Explanation:
If the link LEDs on the workstation and modem do not light up when connecting to a workstation, it could indicate a problem with the cable connecting them. The cable could be damaged, defective, or incompatible with the devices. A technician should replace the cable with a known good one and check if the link LEDs light up. If not, the problem could be with the network interface cards (NICs) on the workstation or modem.
Reference: https://www.comptia.org/blog/what-is-link-light
A network technician is troubleshooting an area where the wireless connection to devices is poor. The technician theorizes that the signal-to-noise ratio in the area is causing the issue.
Which of the following should the technician do NEXT?
- A . Run diagnostics on the relevant devices.
- B . Move the access point to a different location.
- C . Escalate the issue to the vendor’s support team.
- D . Remove any electronics that might be causing interference.
D
Explanation:
The signal-to-noise ratio (SNR) is the difference between the received wireless signal and the noise floor, which is the level of background noise on the spectrum. A high SNR means a good signal quality, while a low SNR means a poor signal quality. The noise floor can be affected by various sources of interference, such as cordless phones, microwaves, radar, etc. To troubleshoot a wireless connection issue caused by a low SNR, the technician should first identify and remove any electronics that might be causing interference in the area. This would improve the SNR and the wireless performance. Running diagnostics on the relevant devices, moving the access point to a different location, or escalating the issue to the vendor’s support team are possible steps to take after removing the interference sources, but not the next step.
Reference:
Signal-to-Noise Ratio (SNR) and Wireless Signal Strength Wireless: SNR, RSSI and Noise basics of wireless troubleshooting.
What is Signal-to-Noise Ratio and How to Measure it Network + N10-008 practice exam
CompTIA N10-008 Free Certification Exam Material
Free Practice Questions for CompTIA Network+Exam (N10-008)
A network administrator needs to monitor traffic on a specific port on a switch.
Which of the following should the administrator configure to accomplish the task?
- A . Port security
- B . Port tagging
- C . Port mirroring
- D . Media access control
C
Explanation:
Port mirroring is a feature that allows a switch to copy the traffic from one or more ports to another port for monitoring or analysis purposes. Port mirroring can help a network administrator to troubleshoot network problems, detect security threats, or optimize network performance. Port mirroring can be configured on most switches using the command-line interface (CLI) or a graphical user interface (GUI).
Reference: CompTIA Network+ N10-008 Certification Exam Objectives, page 51 CompTIA Network+ N10-008 Cert Guide, Chapter 11: Switching Technologies Port Mirroring – CompTIA Network+ Certification (N10-008): The Total Course [Video]1 CompTIA Network+ N10-005: 2.1 C Port Mirroring – Professor Messer IT Certification Training Courses2
CompTIA Network+ N10-005: 1.4 C Port Mirroring3
A network technician needs to correlate security events to analyze a suspected intrusion.
Which of the following should the technician use?
- A . SNMP
- B . Log review
- C . Vulnerability scanning
- D . SIEM
D
Explanation:
SIEM stands for Security Information and Event Management, which is a tool that collects, analyzes, and correlates data from various network devices and sources to provide alerts and reports on security incidents and events. A network technician can use SIEM to correlate security events to analyze a suspected intrusion, as SIEM can help identify the source, target, method, and impact of an attack, as well as provide recommendations for remediation.
Reference: https://www.comptia.org/blog/what-is-siem
A network technician must connect a newly installed access switch in a warehouse to the distribution switch in the telecommunications closet. The distance between the two switches is 1,640ft (500m).
Which of the following is the best cable choice?
- A . Fiber
- B . Cat 5e
- C . Cat 6a
- D . Coaxial
A
Explanation:
Fiber is the best cable choice for long distances, as it can transmit data over 1,640ft (500m) without significant signal loss or interference. Fiber is also immune to electromagnetic interference and can support higher bandwidths than copper cables. Cat 5e and Cat 6a are copper cables that have a maximum distance of 328ft (100m) for Ethernet networks. Coaxial cable is also a copper cable that can reach longer distances, but it is mainly used for cable TV and not for Ethernet networks.
Which of the following indicates a computer has reached end-of-support?
- A . The computer does not have any users.
- B . The antivirus protection is expired.
- C . The operating system license is expired.
- D . No more patches or bug fixes are available indefinitely.
D
Explanation:
No more patches or bug fixes are available indefinitely. This indicates that a computer has reached end-of-support, which means that the manufacturer or vendor of the hardware or software no longer provides technical assistance, updates, or security fixes for the product12. This can expose the computer to potential security risks and compatibility issues with newer technologies
Which of the following technologies provides a failover mechanism for the default gateway?
- A . FHRP
- B . LACP
- C . OSPF
- D . STP
A
Explanation:
First Hop Redundancy Protocol (FHRP) provides a failover mechanism for the default gateway, allowing a backup gateway to take over if the primary gateway fails.
Reference: CompTIA Network+ Certification Study Guide, Chapter 4: Infrastructure.
A packet has a destination address that is located outside of the local network.
Which of the following should be used to route this packet out of the local network?
- A . DNS server
- B . Load balancer
- C . DHCP server
- D . Default gateway
D
Explanation:
Default Gateway: The default gateway is the IP address of the router that connects the local network to external networks (such as the internet). When a packet’s destination address is outside the local network, it is sent to the default gateway for further routing.
Reference: Professor Messer – Network+ Certification Course
CompTIA Network+ N10-008 Study Guide 11
Studocu – To route a packet outside the local network, a packet must be generated at the network
layer
A network technician 13 troubleshooting a network issue for employees who have reported Issues with speed when accessing a server in another subnet. The server is in another building that is 410ft (125m) away from the employees’ building. The 10GBASE-T connection between the two buildings uses Cat 5e.
Which of the following BEST explains the speed issue?
- A . The connection type is not rated for that distance
- B . A broadcast storm is occurring on the subnet.
- C . The cable run has interference on it
- D . The connection should be made using a Cat 6 cable
D
Explanation:
The 10GBASE-T connection between the two buildings uses Cat 5e, which is not rated for a distance of 410ft (125m). According to the CompTIA Network+ Study Manual, for 10GBASE-T connections, "Cat 5e is rated for up to 55m, Cat 6a is rated for 100m, and Cat 7 is rated for 150m." Therefore, the speed issue is likely due to the fact that the connection type is not rated for the distance between the two buildings. To resolve the issue, the technician should consider using a Cat 6a or Cat 7 cable to increase the distance the connection is rated for.