N10-009オンライン試験、N10-009参考資料

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CompTIA N10-009 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Network Operations19%- Monitoring and management
  • 1. SNMP and packet capture
  • 2. Performance monitoring
- Documentation and diagrams
  • 1. Logical and physical diagrams
  • 2. Asset inventory management
- Disaster recovery
  • 1. Business continuity concepts
  • 2. Recovery metrics and backup sites
- Network services
  • 1. DNS and DHCP
  • 2. VPN and remote access
Topic 2: Networking Concepts23%- Cloud and virtualization
  • 1. Virtual networking concepts
  • 2. Cloud deployment models
- Network media and topologies
  • 1. Wireless and wired transmission media
  • 2. Network topologies and architectures
- Network addressing and protocols
  • 1. IPv4 and IPv6 addressing
  • 2. Common ports and protocols
- OSI model concepts
  • 1. Network devices and appliances
  • 2. OSI layers and functions
Topic 3: Network Security14%- Authentication and authorization
  • 1. MFA and SSO
  • 2. RADIUS and TACACS+
- Compliance and risk
  • 1. Risk and vulnerability concepts
  • 2. Compliance standards
- Security technologies
  • 1. PKI and encryption
  • 2. Firewalls and segmentation
Topic 4: Network Implementation20%- Routing technologies
  • 1. Static and dynamic routing
  • 2. NAT and routing protocols
- Switching technologies
  • 1. VLAN configuration
  • 2. Spanning Tree Protocol
- Wireless technologies
  • 1. Wireless standards and security
  • 2. Access point configuration
- Physical installations
  • 1. Power and environmental considerations
  • 2. Cable management and installation
Topic 5: Network Troubleshooting24%- Common network issues
  • 1. Wireless connectivity problems
  • 2. Routing and switching issues
- Performance troubleshooting
  • 1. Bandwidth bottlenecks
  • 2. Latency and packet loss
- Troubleshooting methodology
  • 1. Problem identification
  • 2. Testing and verification

>> N10-009オンライン試験 <<

N10-009参考資料 & N10-009専門知識内容

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CompTIA Network+ Certification Exam 認定 N10-009 試験問題 (Q103-Q108):

質問 # 103
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?

正解：B

解説：
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.


質問 # 104
You have been tasked with implementing an ACL on the router that will:
1. Permit the most commonly used secure remote access technologies from the management network to all other local network segments
2. Ensure the user subnet cannot use the most commonly used remote access technologies in the Linux and Windows Server segments.
3. Prohibit any traffic that has not been specifically allowed.
INSTRUCTIONS
Use the drop-downs to complete the ACL
If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

正解：

解説：
See the answer and solution below.
Explanation:
A screenshot of a computer screen AI-generated content may be incorrect.


質問 # 105
A network engineer troubleshoots an issue with an SMTP relay server. The engineer suspects the issue is related to a reverse DNS lookup failure. Which of the following should the engineer implement to resolve the issue?

正解：A

解説：
The engineer should implement a PTR record. A PTR record is used for reverse DNS lookup, which maps an IP address back to a hostname. This is the opposite of an A record, which maps a hostname to an IPv4 address. Mail systems commonly use reverse DNS lookups as part of anti-spam and mail reputation checks. If an SMTP relay server does not have a valid PTR record, receiving mail servers may reject, delay, or flag messages as suspicious.
The CompTIA Network+ N10-009 objectives include DNS record types, name resolution, email-related records, and troubleshooting network services. PTR records are specifically associated with reverse lookup zones and are the correct record type when the problem involves resolving an IP address to a domain name.
DNSSEC adds cryptographic validation to DNS responses, helping protect against DNS spoofing or tampering, but it does not create reverse DNS mappings. An MX record identifies mail exchangers for a domain, but it does not resolve an IP address back to a name. DoT, or DNS over TLS, encrypts DNS queries.
Therefore, PTR is the correct answer.
Top of Form


質問 # 106
Which of the following requires network devices to be managed using a different set of IP addresses?

正解：B

解説：
Out-of-band (OOB) management refers to using a dedicated management network that is physically separate from the regular data network. This management network uses a different set of IP addresses to ensure that management traffic is isolated from user data traffic, providing a secure way to manage network devices even if the main network is down or compromised.


質問 # 107
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：D

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.


質問 # 108
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