N10-009 Key Concepts | N10-009 Latest Test Simulations

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CompTIA N10-009 Exam Syllabus Topics:

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

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CompTIA Network+ Certification Exam Sample Questions (Q371-Q376):

NEW QUESTION # 371
A network manager connects two switches together and uses two connecting links. Which of the following configurations will prevent Layer 2 loops?

Answer: D

Explanation:
Link aggregation (also known as port trunking or EtherChannel) combines multiple network connections in parallel to increase throughput and provide redundancy. When two switches are connected with multiple links without any additional configuration, a Layer 2 loop may occur. Link aggregation prevents these loops by treating the multiple connections as a single logical link, using a protocol such as LACP (Link Aggregation Control Protocol).
From Andrew Ramdayal's guide:
"Link aggregation allows you to combine multiple network connections to increase the bandwidth and provide redundancy. It helps prevent Layer 2 loops when connecting switches with multiple links by making them operate as a single logical interface."


NEW QUESTION # 372
A network technician needs to configure IP addressing in a Class C network with eight subnets total:
Three subnets for 60 hosts
Three subnets for 15 hosts
Two subnets for seven hosts
Which of the following solutions should the technician use to accomplish this task?

Answer: D

Explanation:
The correct answer is VLSM (Variable Length Subnet Masking). According to the CompTIA Network+ N10-
009 objectives, VLSM allows a network administrator to create subnets of different sizes within the same network, making it ideal for environments where subnet host requirements vary.
In this scenario, the technician must support multiple subnet sizes-60 hosts, 15 hosts, and seven hosts- within a single Class C network. Using a single subnet mask for all eight subnets would either waste a large number of IP addresses or fail to meet host requirements. VLSM solves this problem by allowing each subnet to be assigned a custom subnet mask that closely matches its host needs, maximizing address efficiency.
CIDR enables classless addressing and route aggregation but does not, by itself, describe creating multiple subnet sizes within a single address block. APIPA is a self-assigned addressing mechanism used when DHCP fails and has no relevance to subnet design. RFC 1918 defines private IP address ranges but does not address subnetting strategies.
The Network+ objectives emphasize VLSM as a best practice for efficient IP address management, especially in enterprise environments where conserving address space and meeting diverse departmental requirements are critical. In this case, VLSM is the only solution capable of meeting all stated constraints.


NEW QUESTION # 373
A network engineer configures a new switch and connects it to an existing switch for expansion and redundancy. Users immediately lose connectivity to the network. The network engineer notes the following spanning tree information from both switches:
Switch 1
Port State Cost
1 Forward 2
2 Forward 2
Switch 2
Port State Cost
1 Forward 2
2 Forward 2
Which of the following best describes the issue?

Answer: B

Explanation:
Explanation: The issue is that no root bridge has been identified. In STP, a root bridge is necessary to manage redundant paths and avoid loops in the network. Without a root bridge, all switches will assume they can forward traffic, causing a network loop and connectivity problems.


NEW QUESTION # 374
Which of the following is the part of a disaster recovery (DR) plan that identifies the critical systems that should be recovered first after an incident?

Answer: A

Explanation:
RTO stands forRecovery Time Objective, which defines the maximum acceptable amount of time that a system, application, or function can be down after a failure or disaster. It helps prioritizewhich systems need to be recovered firstbased on their importance to business operations.
* SLA (Service Level Agreement)refers to an agreement between a service provider and a customer regarding expected performance and availability, but it does not dictate recovery order.
* MTBF (Mean Time Between Failures)is a measure of reliability and time between hardware or system failures.
* SIEM (Security Information and Event Management)is a centralized tool for logging and alerting but not relevant to DR recovery prioritization.
#Reference:
CompTIA Network+ N10-009 Official Objectives: 4.4 - Summarize business continuity and disaster recovery concepts.


NEW QUESTION # 375
Which of the following best describes the amount of time between a disruptive event and the point that affected resources need to be back to fully functional status?

Answer: A

Explanation:
The correct metric is RTO (Recovery Time Objective). RTO defines the maximum acceptable time to restore services after a disruption, ensuring business continuity. For example, if the RTO is 4 hours, systems must be back online within that timeframe after an outage.
B . MTBF (Mean Time Between Failures) measures reliability by calculating the average time between hardware failures.
C . RPO (Recovery Point Objective) defines how much data loss (in terms of time, such as last backup point) is acceptable.
D . MTTR (Mean Time to Repair) measures the average time taken to fix a failure but is not a predefined business requirement like RTO.
Organizations define RTOs during disaster recovery planning to align IT recovery capabilities with business needs.


NEW QUESTION # 376
......

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