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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Implementations | 20% | - Wireless standards and deployment - Routing concepts and protocols - Network services configuration - Physical network installation - Switching technologies and configurations |
| Topic 2: Network Security | 14% | - Segmentation and traffic protection - Threats, vulnerabilities, and mitigation - Authentication and access control - Security concepts and frameworks - Network hardening and secure configuration |
| Topic 3: Network Operations | 19% | - Performance management and optimization - Business continuity and disaster recovery - Infrastructure automation basics - High availability and redundancy - Network monitoring and documentation |
| Topic 4: Networking Fundamentals | 23% | - OSI and TCP/IP models - IP addressing and subnetting - Network devices and cabling - Network topologies and types - Ports, protocols, and services |
| Topic 5: Network Troubleshooting | 24% | - Wireless and security troubleshooting - Connectivity issues - Performance and latency problems - Tools and command-line utilities - Troubleshooting methodology |
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NEW QUESTION # 385
Which of the following is most commonly associated with many systems sharing one IP address in the public IP-addressing space?
Answer: B
Explanation:
Port Address Translation (PAT) allows multiple internal devices to share a single public IP address by assigning each device a unique port number. This is the most common method used in environments where many systems need internet access but there are limited public IP addresses.
NEW QUESTION # 386
A technician is deploying new networking hardware for company branch offices. The bridge priority must be properly set. Which of the following should the technician configure?
Answer: C
Explanation:
Bridge priority is a tunable STP parameter used to elect the root bridge. Adjusting the priority under Spanning Tree Protocol ensures the desired switch becomes the topology's root.
NEW QUESTION # 387
A network engineer is troubleshooting connectivity for a newly installed server on an existing VLAN. The engineer reviews the following output:
C:\> ipconfig
IP Address: 192.168.100.225
Mask: 255.255.255.224
Gateway: 192.168.100.254
Router# show ip route
C 192.168.100.0/24 is directly connected, GigabitEthernet0/0
Which of the following describes the issue?
Answer: B
Explanation:
The server's subnet mask is 255.255.255.224 (/27), which covers IPs from 192.168.100.224 to 192.168.100.255. However, the router only recognizes 192.168.100.0/24, indicating a mismatch between the server's subnet and the router's network.
Correct mask for the /24 network is 255.255.255.0, allowing 256 IPs from 192.168.100.0 to 192.168.100.255.
This mismatch would result in routing issues, especially with the gateway outside of the subnet range.
Reference:
CompTIA Network+ N10-009 Official Objectives: 5.2 - Given a scenario, troubleshoot common wired connectivity issues.
NEW QUESTION # 388
Which of the following attacks would most likely cause duplicate IP addresses in a network?
Answer: C
Explanation:
* Definition of a Rogue DHCP Server:
* A rogue DHCP server is an unauthorized DHCP server on a network, which can assign IP addresses to devices without proper control, leading to IP address conflicts.
* Impact of a Rogue DHCP Server:
* IP Address Conflicts: Multiple devices may receive the same IP address from different DHCP servers, causing network connectivity issues.
* Network Disruption: Devices may be assigned incorrect network configuration settings, disrupting network services and connectivity.
* Comparison with Other Attacks:
* DNS poisoning: Alters DNS records to redirect traffic to malicious sites, but does not cause IP address conflicts.
* Social engineering: Involves manipulating individuals to gain unauthorized access or information, not directly related to IP address conflicts.
* Denial-of-service (DoS): Floods a network or service with excessive traffic to disrupt operations, but does not cause duplicate IP addresses.
* Prevention and Detection:
* Implement network access control measures to prevent unauthorized devices from acting as DHCP servers.
* Use DHCP snooping on switches to allow DHCP responses only from authorized DHCP servers.
NEW QUESTION # 389
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: A
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 # 390
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