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NEW QUESTION # 346
Which of the following can also provide a security feature when implemented?
Answer: A
Explanation:
Explanation: NAT (Network Address Translation) helps hide internal IP addresses from external networks, adding a layer of security by preventing direct access to internal systems from the outside.
NEW QUESTION # 347
A company is implementing a wireless solution in a high-density environment. Which of the following 802.11 standards is used when a company is concerned about device saturation and converage?
Answer: B
Explanation:
802.11ax, also known as Wi-Fi 6, is designed for high-density environments and improves device saturation and coverage compared to previous standards.
802.11ac: While it offers high throughput, it is not optimized for high-density environments as effectively as 802.11ax.
802.11ax (Wi-Fi 6): Introduces features like OFDMA, MU-MIMO, and BSS Coloring, which enhance performance in crowded environments, reduce latency, and increase the number of devices that can be connected simultaneously.
802.11g and 802.11n: Older standards that do not offer the same level of efficiency or support for high device density as 802.11ax.
Network Reference:
CompTIA Network+ N10-007 Official Certification Guide: Covers the 802.11 standards and their capabilities.
Cisco Networking Academy: Provides training on Wi-Fi technologies and best practices for high-density deployments.
Network+ Certification All-in-One Exam Guide: Discusses the various 802.11 standards and their applications in different environments.
NEW QUESTION # 348
A network administrator needs to monitor data from recently installed firewalls in multiple locations. Which of the following solutions would best meet the administrator's needs?
Answer: A
Explanation:
SIEM (Security Information and Event Management) systems are used to aggregate and analyze log data from various sources, including firewalls, to detect potential security incidents and assist in regulatory compliance. The document explains:
"SIEM solutions aggregate and analyze log and event data from multiple devices, including firewalls, across different locations. They help in real-time monitoring, incident response, and ensuring compliance with security policies."
NEW QUESTION # 349
Which of the following is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities?
Answer: C
Explanation:
A Site-to-site VPN (Virtual Private Network) is the most cost-effective solution for establishing a persistent, secure connection between two facilities. It uses the public internet to create an encrypted tunnel, leveraging existing internet connections without requiring expensive dedicated infrastructure. This makes it ideal for organizations looking to securely connect remote sites while minimizing costs.
Why not GRE tunnel? Generic Routing Encapsulation (GRE) tunnels encapsulate traffic but do not provide encryption natively, requiring additional protocols (e.g., IPsec) for security. This adds complexity and is less cost-effective than a site-to-site VPN, which integrates encryption.
Why not VXLAN? Virtual Extensible LAN (VXLAN) is used for overlay networks in data centers to extend Layer 2 networks, not for secure site-to-site connectivity.
Why not Dedicated line? A dedicated line (e.g., leased line or MPLS) provides high reliability but is significantly more expensive due to the need for dedicated infrastructure.
Reference:CompTIA Network+ N10-009 Objective 1.7: Explain the use cases for virtual private networks (VPNs) and tunneling protocols. The CompTIA Network+ Study Guide (e.g., Chapter 12: Network Security) explains that site-to-site VPNs are a cost-effective, secure method for connecting geographically separate networks over the internet.
NEW QUESTION # 350
A user's home mesh wireless network is experiencing latency issues. A technician has:
*Performed a speed test.
*Rebooted the devices.
*Performed a site survey.
*Performed a wireless packet capture.
The technician reviews the following information:
The technician notices in the packet capture that frames were retransmitted. Which of the following is the most likely cause of the user's network issue?
Answer: A
Explanation:
*Too much overlap on the same channel (all devices on channel 11) causes interference, leading to retransmissions and high latency.
*Same SSIDs (A) are expected in mesh networks.
*Device compatibility (C) would show different symptoms.
*Node power (D) affects coverage, not congestion.
#Reference: CompTIA Network+ N10-009 Official Documentation - Wireless Troubleshooting & Signal Interference.
NEW QUESTION # 351
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