CompTIA Updated N10-008 Exam Questions and Answers by juniper

An MX record is a type of DNS record that specifies the mail server responsible for accepting email messages on behalf of a domain name. Therefore, an engineer who needs to update an MX record is most likely working on an email server project

The VLAN database is the database that stores the VLAN configuration information on a switch, such as the VLAN IDs, names, and ports. The VLAN database is stored in a separate file from the switch configuration file, and it is not affected by the erase startup-config or reload commands. Therefore, to delete the VLAN database, the administrator needs to use a specific command, such as delete flash:vlan.dat or delete vlan.dat, depending on the switch model. Deleting the VLAN database will ensure that no network settings related to VLANs persist on the switch when it is moved to a remote site.

References

• 1: CompTIA Network+ N10-008 Certification Study Guide, page 163
• 2: N10-008 CompTIA Network+ : 5.5 - Professor Messer IT Certification Training Courses
• 3: CompTIA Network+ (N10-008) Practice Exam w/PBQ & Solution, question 6

A MAC filter list is a security feature that allows or denies access to a wireless network based on the MAC address of the device. A MAC address is a unique identifier assigned to a network interface card (NIC) at the physical layer of the OSI model. However, MAC filtering operates at the data link layer of the OSI model, where MAC addresses are used to encapsulate and deliver data frames between devices on the same network segment.

References: CompTIA Network+ Certification Exam Objectives Version 7.0 (N10-007), Objective 3.1: Given a scenario, install and configure wireless LAN infrastructure and implement the appropriate technologies in support of wireless capable devices.

Port mirroring is a feature that allows a network technician to monitor traffic on a specific port on a switch by copying all the traffic from that port to another port where a monitoring device is connected. Port mirroring can be used for troubleshooting, analysis, or security purposes, such as detecting network anomalies, performance issues, or malicious activities. References: https://www.comptia.org/training/books/network-n10-008-study-guide (page 156)