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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Implementations | 20% | - Switching technologies and configurations - Network services configuration - Wireless standards and deployment - Physical network installation - Routing concepts and protocols |
| Topic 2: Network Operations | 19% | - High availability and redundancy - Network monitoring and documentation - Business continuity and disaster recovery - Performance management and optimization - Infrastructure automation basics |
| Topic 3: Network Troubleshooting | 24% | - Troubleshooting methodology - Connectivity issues - Wireless and security troubleshooting - Performance and latency problems - Tools and command-line utilities |
| Topic 4: Networking Fundamentals | 23% | - OSI and TCP/IP models - Ports, protocols, and services - Network devices and cabling - Network topologies and types - IP addressing and subnetting |
| Topic 5: Network Security | 14% | - Segmentation and traffic protection - Authentication and access control - Network hardening and secure configuration - Threats, vulnerabilities, and mitigation - Security concepts and frameworks |
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NEW QUESTION # 661
A data center interconnect using a VXLAN was recently implemented. A network engineer observes slow performance and fragmentation on the interconnect. Which of the following technologies will resolve the issue?
Answer: A
Explanation:
VXLAN (Virtual Extensible LAN) encapsulates Ethernet frames inside UDP packets, increasing packet size. This can lead to fragmentation and performance degradation unless Jumbo Frames are enabled.
Breakdown of Options:
A . 802.1Q tagging - VLAN tagging enables segmentation but does not address fragmentation issues.
B . Spanning tree - STP prevents loops but does not improve performance for VXLAN traffic.
C . Link aggregation - LACP combines links for higher bandwidth but does not prevent fragmentation.
D . Jumbo frames - Correct answer. Enabling Jumbo Frames allows larger packet sizes, reducing fragmentation and improving VXLAN performance.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 2.3: Explain network performance concepts.
RFC 7348: VXLAN: A Framework for Overlaying Virtualized Layer 2 Networks
NEW QUESTION # 662
Which of the following is the next step to take after successfully testing a root cause theory?
Answer: A
Explanation:
* Troubleshooting Methodology:
* Confirming the Root Cause: After testing and confirming the theory, the next logical step is to address the issue by implementing a solution.
* Implementation of the Solution:
* Resolve the Issue: Implement the identified solution to rectify the problem. This step involves
* making necessary changes to the network configuration, replacing faulty hardware, or applying software patches.
* Documentation: Document the solution and the steps taken to resolve the issue to provide a reference for future troubleshooting.
* Comparison with Other Steps:
* Determine Resolution Steps: This is part of the implementation process where specific actions are outlined, but the actual next step after testing is to implement those steps.
* Duplicate the Problem in a Lab: This step is typically done earlier in the troubleshooting process to understand the problem, not after confirming the root cause.
* Present the Theory for Approval: In some scenarios, presenting the theory might be necessary for major changes, but generally, once the root cause is confirmed, the solution should be implemented.
* Final Verification:
* After implementing the solution, it is important to verify that the issue is resolved and that normal operations are restored. This may involve monitoring the network and testing to ensure no further issues arise.
References:
* CompTIA Network+ study materials on troubleshooting methodologies and best practices.
NEW QUESTION # 663
An organization is experiencing issues with its wireless network. Several APs are placed throughout the building, and only certain areas have a weak signal and low data transfer rates.
Which of the following should a wireless technician do first?
Answer: B
Explanation:
Weak signal strength and low throughput in specific areas indicate coverage gaps, so adding additional access points improves signal coverage and capacity in those locations to resolve the connectivity issue.
NEW QUESTION # 664
A company experienced a breach and wants to implement preventive measures. The network administrator is looking for a tool that can collect, analyze, and quickly correlate known attacks.
Which of the following software tools can accomplish this task?
Answer: C
Explanation:
A SIEM platform collects logs, analyzes them, and correlates events in real time to identify known attack patterns, providing the preventive visibility the company needs after a breach.
NEW QUESTION # 665
A network engineer is troubleshooting an issue with a VoIP network. After performing analysis, the engineer found that when users upload large files, voice quality is severely degraded. When no other traffic is on the network, voice quality is fine. Which of the following should the engineer do to most likely resolve the issue?
Answer: D
NEW QUESTION # 666
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