Speed Mismatches: If NICs are set to different speeds (e.g., 100 Mbps on one side and 1 Gbps on the other), performance will degrade. Ensuring consistent speed settings between devices is crucial for optimal performance.
Load balancer settings (B): Applies to server load distribution, not endpoint speed.
Flow control settings (C): Can affect performance but is secondary to speed mismatches.
Infrastructure cabling grade (D): Relevant if the cables are unsuitable for gigabit speeds, but speed settings should be checked first.
Reference: CompTIA Network+ Official Study Guide, Domain 2.5 (Troubleshooting Network Issues).

This process describesZero-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 codeautomates infrastructure deployment using code, but this scenario specifically fits ZTP.
* D. Configuration managementtracks 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.

*API (Application Programming Interface) enables secure and granular access control, remote management, and logging, making it ideal for network monitoring.
*SNMP (A) is mainly used for device monitoring but lacks centralized logging and user-based privilege control.
*SIEM (C) is a security monitoring tool focused on log collection, not device management.
*SSO (D) is related to authentication, not monitoring.
#Reference: CompTIA Network+ N10-009 Official Documentation - Network Monitoring & Management Technologies.

Fiber connections require Tx on one end to connect to Rx on the other end. If the patch cord is replaced and link lights remain off, the most common cause is that the connectors are reversed. Swapping (transposing) the connectors ensures proper transmit/receive alignment.
A). Replacing the transceiver may eventually be necessary, but only after verifying correct connections.
B). Restarting the switchport won't resolve a physical misconnection.
D). Using multimode fiber would be incorrect here, as the link was designed for single-mode (10 miles/16 km requires SMF).
References (CompTIA Network+ N10-009):
Domain: Network Troubleshooting - Fiber connectivity, Tx/Rx alignment, link light diagnostics.

To increase overall security after a recent breach, implementing least privilege network access and central policy management are effective strategies.
Least Privilege Network Access: This principle ensures that users and devices are granted only the access necessary to perform their functions, minimizing the potential for unauthorized access or breaches. By limiting permissions, the risk of an attacker gaining access to critical parts of the network is reduced.
Central Policy Management: Centralized management of security policies allows for consistent and streamlined implementation of security measures across the entire network. This helps in quickly responding to security incidents, ensuring compliance with security protocols, and reducing the chances of misconfigurations.