CompTIA Updated N10-009 Exam Questions and Answers by cory

Inconsistent arrival of RTP (Real-Time Protocol) packets indicates jitter or latency variation. A protocol analyzer (packet sniffer, e.g., Wireshark) can capture and analyze RTP streams, showing delay, jitter, and packet loss statistics.

A. Toner and probe locates cable runs, not packet analysis.

C. Cable tester checks wiring faults, not packet timing.

D. Spectrum reader is for identifying wireless interference, not analyzing RTP traffic.

References (CompTIA Network+ N10-009):

Domain: Network Troubleshooting — Protocol analyzers, VoIP troubleshooting, jitter analysis.

The correct answer is B. MAC filtering. MAC filtering is a straightforward method of restricting network access by allowing only specific device MAC (Media Access Control) addresses to connect to a wireless network. In a small, stable environment with fewer than ten devices and no expected changes, this approach is simple to implement and manage.

Each network interface card (NIC) has a unique MAC address, and wireless access points can be configured with a whitelist of approved addresses. Devices not on the list are denied access, effectively limiting connectivity to only authorized laptops. This aligns with CompTIA Network+ guidance for basic access control mechanisms in small or low-complexity networks.

Other options are less suitable in this scenario. ACLs (Access Control Lists) are typically used on routers and switches to control traffic flow based on IP addresses or protocols, not specifically device access to a wireless network. NAC (Network Access Control) provides more advanced authentication and posture assessment but is more complex and unnecessary for a small, static environment. Trusted zones refer to network segmentation concepts rather than device-level access control.

Thus, MAC filtering provides the simplest and most appropriate solution.

This process describes Zero-touch provisioning (ZTP), where a device automatically pulls its configuration from a cloud controller or URL once connected to the internet. It ' s common in SD-WAN and modern network appliances.

A. SASE (Secure Access Service Edge) refers to cloud-delivered network security, not a provisioning method.

C. Infrastructure as code automates infrastructure deployment using code, but this scenario specifically fits ZTP.

D. Configuration management tracks and maintains system configurations but doesn ' t describe the installation process.

???? Reference:

CompTIA Network+ N10-009 Official Objectives: 4.3 – Explain remote access methods and automation.

An Extended Service Set Identifier (ESSID) allows multiple access points to share the same SSID, enabling seamless roaming for users. This means that users can move between different access points within the same ESSID without losing connection or having to reauthenticate. This provides a better user experience, especially in large environments such as office buildings or campuses.References: CompTIA Network+ study materials. ​