CompTIA N10-009受験練習参考書、N10-009対応問題集

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CompTIA N10-009 認定試験の出題範囲：

トピック出題範囲
トピック 1
  • Network Operations: For IT operations staff and network operations center (NOC) technicians, this part of the exam covers the purpose of organizational processes and procedures and use of network monitoring technologies.
トピック 2
  • Network Implementation: For network technicians and junior network engineers, this section covers Characteristics of routing technologies, Configuration of switching technologies and features, and
トピック 3
  • Network Security: This section of the exam for cybersecurity specialists and network security administrators covers the importance of basic network security concepts, Various types of attacks and their impact on the network, application of network security features, defense techniques, and solutions.| Network Troubleshooting: For help desk technicians and network support specialists, this section covers troubleshooting methodology, troubleshooting common cabling and physical interface issues, troubleshooting common issues with network services, and use of appropriate tools or protocols to solve networking issues.
トピック 4
  • Selection and configuration of wireless devices.
トピック 5
  • Cloud concepts and connectivity options, and Common networking ports.

>> CompTIA N10-009受験練習参考書 <<

N10-009対応問題集 & N10-009認定テキスト

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CompTIA Network+ Certification Exam 認定 N10-009 試験問題 (Q328-Q333):

質問 # 328
Which of the following network traffic types is sent to all nodes on the network?

正解：B


質問 # 329
Which of the following provides simple authentication to access network devices while also providing logging capabilities?

正解：B

解説：
The correct answer is A. TACACS+ . This protocol is commonly used for authentication, authorization, and accounting (AAA) when administrators need to access network infrastructure devices such as routers, switches, and firewalls. The key part of the question is not just authentication, but also logging capabilities .
TACACS+ supports accounting functions, which means it can record administrative actions and login events.
That makes it especially useful when organizations want traceability for device access and configuration changes.
The other options do not fit as well. SAML is primarily used for federated identity and web-based authentication between identity providers and service providers. SSO is a general authentication convenience feature that allows one login to access multiple systems, but it does not itself provide detailed device-level accounting. MFA strengthens authentication by requiring multiple factors, but it is not the protocol best known for centralized access control and activity logging on network devices.
For Network+ exam purposes, TACACS+ is strongly associated with administrative access to network equipment and with maintaining an audit trail of who accessed devices and what actions were performed.
Because the question asks for both simple authentication and logging, TACACS+ is the best match.


質問 # 330
A company experiences an incident involving a user who connects an unmanaged switch to the network.
Which of the following technologies should the company implement to help avoid similar incidents without conducting an asset inventory?

正解：D

解説：
Port security is a Layer 2 security feature that restricts the number of devices connecting to a network switch port. It helps prevent unauthorized devices, such as an unmanaged switch, from being connected to the network.
How Port Security Works:
Limits the number of MAC addresses that can connect to a port.
Can shut down or restrict the port if an unauthorized device is detected.
Prevents users from plugging in unauthorized networking equipment (e.g., unmanaged switches, hubs).
Incorrect Options:
A:Screened Subnet: A screened subnet (DMZ) is used for isolating external-facing servers, not for controlling unauthorized network connections.
B:802.1X: Provides authentication for devices but requires a RADIUS server, which is a more complex solution than port security.
C:MAC Filtering: Controls which MAC addresses can connect but is difficult to manage and can be spoofed.


質問 # 331
Which of the following network ports is used when a client accesses an SFTP server?

正解：A

解説：
SFTP (Secure File Transfer Protocol) operates over port 22, using SSH (Secure Shell) encryption for secure file transfers.


質問 # 332
A user tries to visit www.abc.com, but the website that displays is www.cba.com. Which of the following should be done in order to reach the correct website?

正解：D

解説：
The correct answer is Modify the CNAME record because a CNAME (Canonical Name) record maps one domain name (alias) to another domain name. If a user enters www.abc.com but is redirected to www.cba.
com, it is likely that the DNS configuration includes an incorrect CNAME entry pointing abc.com to cba.com.
Updating or correcting the CNAME record ensures the alias resolves to the intended host.
According to CompTIA Network+ (N10-009) objectives covering DNS record types, a CNAME record is used to alias one domain name to another, commonly for load balancing, CDN services, or website redirection.
A PTR record (Option B) is used for reverse DNS lookups (IP address to hostname) and does not control forward name resolution for websites. NTP settings (Option C) are used for time synchronization and have no impact on DNS resolution. A TXT record (Option D) stores descriptive text information (such as SPF, DKIM, or domain verification data) and does not affect website redirection.
Therefore, correcting the CNAME record resolves the issue and ensures users reach the correct website.


質問 # 333
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