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| Section | Objectives |
|---|---|
| Topic 1: Network Troubleshooting | - Common network issues - Tools and diagnostic techniques - Troubleshooting methodology |
| Topic 2: Network Operations | - Monitoring and optimization - Network documentation and diagrams - Business continuity and disaster recovery |
| Topic 3: Network Security | - Network hardening techniques - Access control and authentication - Security concepts and threats |
| Topic 4: Network Implementation | - Network storage and virtualization - Wireless networking - Switching technologies - Routing technologies |
| Topic 5: Networking Concepts | - Network topologies and types (LAN, WAN, WLAN) - OSI model and TCP/IP model - IPv4 and IPv6 addressing - Ports, protocols, and services |
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質問 # 597
A network administrator for a small office is adding a passive IDS to its network switch for the purpose of inspecting network traffic. Which of the following should the administrator use?
正解：D
解説：
Port mirroring, also known as SPAN (Switched Port Analyzer), is used to send a copy of network packets seen on one switch port (or an entire VLAN) to another port where the IDS is connected. This allows the IDS to passively inspect network traffic without interfering with the actual traffic flow. Port mirroring is an essential feature for implementing IDS in a network for traffic analysis and security monitoring.References:CompTIA Network+ study materials.
質問 # 598
Which of the following is the most likely benefit of installing server equipment in a rack?
正解：B
解説：
Installing server equipment in a rack increases compute density by allowing multiple servers to be organized efficiently in a vertical configuration, saving space while housing more devices in a smaller footprint. This is critical for data centers and businesses with high hardware demands.
Simplified troubleshooting process (A): While racks can aid in organizing equipment, this is a secondary benefit, not the primary purpose.
Decreased power consumption (B): Rack installation does not directly reduce power usage; equipment power consumption remains the same.
Improved network performance (C): Racking servers does not inherently improve network performance; that depends on network configurations.
質問 # 599
A company recently converted most of the officelaptops to connect wirelesslyto the corporate network. After ahigh-traffic malware attack, narrowing the event to a specific user wasdifficultbecause of thewireless configuration.
Which of the following actions should the company take?
正解：A
解説：
Comprehensive and Detailed Explanation:
UsingPre-Shared Key (PSK)authentication means thatall users share the same Wi-Fi password, making it difficult toidentify individual userswhen security incidents occur.
Migrating toWPA2-Enterprise(orWPA3-Enterprise) replacesPSK authenticationwithindividual user credentialsusing802.1X authentication and a RADIUS server. This allows the organization to:
* Track and log specific user activity
* Enforce per-user authentication policies
* Improve network security
Breakdown of Options:
* A. Restrict users to the 5GHz frequency- Improvesperformancebut doesnot enhance user tracking or security.
* B. Upgrade to a mesh network- Amesh network improves coverage,not security tracking.
* C. Migrate from PSK to Enterprise-#Correct answer.WPA2-Enterprise or WPA3-Enterprise uses individual user authentication,allowing per-user tracking.
* D. Implement WPA2 encryption-WPA2 is already widely used; itdoes not resolve the tracking issue.
質問 # 600
A network administrator is planning to implement device monitoring to enhance network visibility. The security that the solution provies authentication and encryption. Which of the following meets these requirements?
正解：A
解説：
SNMPv3 (Simple Network Management Protocol version 3) provides device monitoring with authentication and encryption. This enhances network visibility and security by ensuring that monitoring data is securely transmitted and access to network devices is authenticated.
* Authentication: SNMPv3 includes robust mechanisms for authenticating users accessing network devices.
* Encryption: It provides encryption to protect the integrity and confidentiality of the data being transmitted.
* Network Management: SNMPv3 allows for detailed monitoring and management of network devices, ensuring better control and security.
Network References:
* CompTIA Network+ N10-007 Official Certification Guide: Covers SNMP versions, their features, and security enhancements in SNMPv3.
* Cisco Networking Academy: Provides training on implementing and securing SNMP for network management.
* Network+ Certification All-in-One Exam Guide: Explains the benefits and security features of SNMPv3 for network monitoring.
質問 # 601
A network architect of a stock exchange broker is implementing a disaster recovery (DR) high-availability plan. Which of the following approaches would be the best fit?
正解：A
解説：
In financial institutions such as stock exchanges, downtime or latency can have severe consequences. Active- active high availability ensures multiple sites/systems are running simultaneously, distributing the load and providing immediate failover with minimal or no interruption. This is the best approach for environments that require continuous uptime and resiliency.
A). Warm site: Useful for disaster recovery, but not immediate; systems must be partially configured and brought online.
C). Full mesh: Refers to topology interconnections, not DR/HA design.
D). In-band: Relates to management methods, not HA/DR strategies.
References (CompTIA Network+ N10-009):
Domain: Network Infrastructure - High availability, redundancy strategies, active-active vs. active-passive design.
質問 # 602
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