N10-009 CompTIA Network+ Certification Exam Pass4sure Zertifizierung & CompTIA Network+ Certification Exam zuverlässige Prüfung Übung

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CompTIA N10-009 Prüfungsplan:

ThemaEinzelheiten
Thema 1
  • OSI reference model concepts, Comparison of networking appliances, applications, and functions
Thema 2
  • Network Implementation: For network technicians and junior network engineers, this section covers Characteristics of routing technologies, Configuration of switching technologies and features, and
Thema 3
  • Cloud concepts and connectivity options, and Common networking ports.
Thema 4
  • Selection and configuration of wireless devices.
Thema 5
  • Networking Concepts: For network administrators and IT support professionals, this domain covers
Thema 6
  • 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.

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CompTIA Network+ Certification Exam N10-009 Prüfungsfragen mit Lösungen (Q411-Q416):

411. Frage
Which of the following can support a jumbo frame?

Antwort: B

Begründung:
Definition of Jumbo Frames:
Jumbo frames are Ethernet frames with more than 1500 bytes of payload, typically up to 9000 bytes. They are used to improve network performance by reducing the overhead caused by smaller frames.
Why Switches Support Jumbo Frames:
Switches are network devices designed to manage data packets and can be configured to support jumbo frames. This capability enhances throughput and efficiency, particularly in high- performance networks and data centers.


412. Frage
Which of the following does a router use to determine the preferred route?

Antwort: A

Begründung:
Routers determine the best route to a destination using longest prefix match. This means the router chooses the route entry with the most specific matching network prefix for the destination IP address. For example, if a routing table contains 10.1.0.0/16 and 10.1.2.0/24, a packet destined to 10.1.2.50 matches both entries, but the router prefers /24 because it is more specific (longer mask). Network+ (N10-009) routing fundamentals emphasize that route selection begins with prefix length specificity before considering other factors within the same prefix length (such as administrative distance and metric, depending on the platform).
"Shortest prefix match" is the opposite of correct behavior. "Routes learned from EIGRP" and "routes learned from OSPF" describe sources of routes, not the general selection rule routers use when multiple matching routes exist. Even if routes come from different protocols, the router still applies selection logic; the universal rule for matching destination networks is longest prefix match. Hence, option C is correct.


413. Frage
Which of the following cloud deployment models is most commonly associated with multitenancy and is generally offered by a service provider?

Antwort: C

Begründung:
The correct answer is public cloud. In public cloud models, a provider (such as AWS, Azure, or Google Cloud) hosts infrastructure and services that are shared across multiple customers, known as multitenancy. Each tenant is logically isolated, but physical infrastructure is shared, allowing providers to achieve economies of scale.
A . Private cloud is dedicated to one organization, not multitenant.
B . Community cloud is shared among organizations with common interests, but it's less common than public multitenancy.
D . Hybrid cloud combines private and public but does not define tenancy alone.
Public cloud services are the most cost-effective and scalable because they spread costs across many customers, but they require strong security and isolation to protect tenants.


414. Frage
A network administrator suspects users are being sent to malware sites that are posing as legitimate sites. The network administrator investigates and discovers that user workstations are configured with incorrect DNS IP addresses. Which of the following should the network administrator implement to prevent this from happening again?

Antwort: C

Begründung:
DHCP snooping is a security feature on network switches that helps to prevent unauthorized (rogue) DHCP servers from assigning IP addresses to clients. By implementing DHCP snooping, the network administrator can restrict DHCP responses to authorized servers only, preventing unauthorized DHCP configurations, such as incorrect DNS IPs, from being assigned to clients. This helps prevent man-in- the-middle attacks where malicious actors misconfigure DNS to redirect users to fraudulent sites.
(Reference: CompTIA Network+ Study Guide, Chapter on Network Security)


415. Frage
A technician is troubleshooting a computer issue for a user who works in a new annex of an office building. The user is reporting slow speeds and intermittent connectivity. The computer is connected via a Cat 6 cable to a distribution switch that is 492ft (150m) away. Which of the following should the technician implement to correct the issue?

Antwort: A

Begründung:
The maximum recommended length for Ethernet cable runs is 100 meters (328 feet). At 150 meters, the Cat 6 cable is too long, causing signal degradation and connectivity issues. Running fiber from the distribution switch to an access switch in the annex will allow for reliable connectivity over longer distances, as fiber can cover greater distances without signal loss.


416. Frage
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