An802.11ac wireless bridgeis the most practical solution to connect two nearby buildingswithout trenching or laying physical cable. It provides high-speed, point-to-point connectivity using directional antennas.
* A. Multimode fiberis effective but expensive and typically limited to 500 meters or less.
* C. Cat 6 copperis only rated for up to 100 meters - not viable for a street-wide distance.
* D. Loopback adapteris a troubleshooting tool, not for network extension.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 1.3 - Compare and contrast various network topologies, types, and technologies.

The netstat output shows that multiple ports are open, including Telnet (23), FTP (20), and TFTP (69), which are potential security risks. Disabling unused ports minimizes the attack surface, reducing security vulnerabilities.
Breakdown of Options:
A). Disable the unused ports - Correct answer. Unused ports should be closed to prevent unauthorized access.
B). Enforce access control lists - ACLs help control access but do not disable unnecessary services.
C). Perform content filtering - Content filtering controls web traffic, not port security.
D). Set up a screened subnet - A DMZ (screened subnet) improves security but does not address open ports.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 3.4: Given a scenario, implement network security measures.
CIS Benchmark for Linux & Windows Server Hardening

The correct answer is deploying a mesh network. A mesh wireless network uses multiple interconnected access points that automatically route traffic through the best available path. This ensures seamless coverage throughout a facility, even when users move between APs. Mesh APs can extend coverage without requiring each AP to be directly wired, making them ideal for large or hard-to-wire environments.
A . Ad hoc access points are peer-to-peer connections and cannot provide enterprise-grade continuous coverage.
B . Ethernet drops provide wired connectivity but do not solve wireless coverage issues.
D . Changing the frequency (from 2.4 GHz to 5 GHz or vice versa) may reduce interference but will not guarantee building-wide seamless connectivity.
Mesh networks are particularly effective in environments with roaming devices (smartphones, tablets, handheld scanners) and ensure that there are no dead spots, thereby delivering continuous wireless access.

Comprehensive and Detailed Explanation (paraphrased, aligned to N10-009):
HTTPS is HTTP encapsulated in TLS (the successor to SSL), which provides confidentiality, integrity, and server authentication for web traffic.
A . SSH secures remote shell and tunnels, not HTTPS.
C . SCADA refers to industrial control systems, not a transport security protocol.
D . RADIUS is an AAA protocol for authentication/authorization/accounting, not the web encryption layer.
Reference (CompTIA Network+ N10-009):