CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 711:

  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?

  A. RTO
  B. SLA
  C. MTBF
  D. SIEM
  A. RTO

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  Explanation

  RTO stands for Recovery 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 first based 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.

  References:

  CompTIA Network+ N10-009 Official Objectives: 4.4?Summarize business continuity and disaster recovery concepts.

• Question 712:

  A network technician is terminating a cable to a fiber patch panel in the MDF.

  Which of the following connector types is most likely in use?

  A. F-type
  B. RJ11
  C. BNC
  D. SC
  D. SC

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  Explanation

  In a fiber patch panel, the SC (Subscriber Connector or Standard Connector) is commonly used because of its push-pull design and reliability in enterprise environments.

  Breakdown of Options:

  Option A. F-type - Used for coaxial cables (e.g., cable TV), not fiber.

  Option B. RJ11 - Used for telephone lines not fiber,.

  Option C. BNC - Used for coaxial connections not fiber,.

  Option D. SC - Correct answer. A standard fiber optic connector used in patch panels.

• Question 713:

  A network administrator is troubleshooting an issue on a newly configured college campus network. A Linux workstation can connect to the internet, but it fails to connect to the campus intranet, which is located on another campus.

  Which of the following commands should the administrator run next to troubleshoot the connection?

  A. ifconfig
  B. traceroute
  C. nmap
  D. dig
  B. traceroute

• Question 714:

  Three access points have Ethernet that runs through the ceiling. One of the access points cannot reach the internet.

  Which of the following tools can help identify the issue?

  A. Network tap
  B. Cable tester
  C. Visual fault locator
  D. Toner and probe
  B. Cable tester

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  Explanation

  A cable tester is a tool that can help identify issues with the physical cabling, such as breaks or improper terminations, which may prevent the access point from reaching the internet.

• Question 715:

  Which connector is used with SFP transceivers?

  A. RJ45
  B. LC
  C. BNC
  D. F-type
  B. LC

• Question 716:

  A network administrator is responding to a request to configure a new IP phone.

  Which of the following should the network administrator do to allow data and voice traffic to be properly prioritized

  A. Configure full duplex
  B. Modify QoS.
  C. Enable 802.1Q tagging
  D. Change the native VLAN.
  B. Modify QoS.

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  Explanation

  To ensure voice and data traffic are properly prioritized for an IP phone, the administrator should modify (configure) QoS. In Network+ (N10-009), QoS is the primary mechanism used to prioritize latency-sensitive traffic such as VoIP. By classifying and marking voice frames/packets (often using DSCP/CoS values) and applying priority queuing, the network ensures voice traffic experiences minimal delay and jitter even when links are congested. This is essential for call quality because voice is highly sensitive to variation in delivery time and packet loss.

  802.1Q tagging is important for VLAN separation (and many IP phone deployments use a voice VLAN), but VLAN tagging alone does not guarantee prioritization; it separates traffic, while QoS provides preferential treatment. Full duplex can reduce collisions on Ethernet links, but it does not implement traffic prioritization policies. Changing the native VLAN is a trunking/security configuration detail and not the correct action to prioritize voice versus data. In practice, networks often use both a voice VLAN (802.1Q) and QoS, but for the explicit requirement of prioritization, QoS is the correct answer.

• Question 717:

  A company recently rearranged some users' workspaces and moved several users to previously used workspaces. The network administrator receives a report that all of the users who were moved are having connectivity issues.

  Which of the following is the MOST likely reason?

  A. Ports are error-disabled.
  B. Ports have an incorrect native VLAN.
  C. Ports are having an MDIX issue.
  D. Ports are trunk ports.
  B. Ports have an incorrect native VLAN.

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  Explanation

  The most likely cause is that the switch ports were previously configured for a different VLAN than the one the users' computers are on. If the native VLAN on the port doesn't match the end device's VLAN, communication fails.

  A. Ports are error-disabled: Would result in no link at all, not common across multiple ports unless a violation occurred.

  C. MDIX issue: Auto-MDIX eliminates most crossover problems on modern switches.

  D. Ports are trunk ports: While possible, typical user devices should be on access ports, but if the port is incorrectly trunked, it can cause similar issues. However, "incorrect VLAN" is more precise here.

  References:

  CompTIA Network+ N10-009 Official Objectives: 2.3?Given a scenario, configure and verify VLANs.

• Question 718:

  A network administrator notices that two switches connected via redundant links are both forwarding traffic, causing intermittent network issues.

  Which of the following should be configured to prevent this problem?

  A. Port security
  B. Spanning Tree Protocol
  C. VLAN tagging
  D. Link aggregation
  B. Spanning Tree Protocol

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  Explanation

  Spanning Tree Protocol (STP) is specifically designed to prevent Layer 2 switching loops in networks with redundant paths. When multiple switches are interconnected with redundant links, loops can form, leading to broadcast storms, MAC address table instability, and network outages. STP works by electing a root bridge and calculating the best path to that root. It then places redundant ports into a blocking state, ensuring that only one active forwarding path exists between network segments. Without STP, all ports would forward traffic simultaneously, creating loops. Therefore, enabling STP stabilizes the network by logically eliminating redundant paths while still keeping them available for failover.

• Question 719:

  After installing a new wireless access point, an engineer tests the device and sees that it is not performing at the rated speeds.

  Which of the following should the engineer do to troubleshoot the issue? (Select two.)

  A. Ensure a bottleneck is not coming from other devices on the network.
  B. Install the latest firmware for the device.
  C. Create a new VLAN for the access point.
  D. Make sure the SSID is not longer than 16 characters.
  E. Configure the AP in autonomous mode.
  F. Install a wireless LAN controller.
  A. Ensure a bottleneck is not coming from other devices on the network.
  B. Install the latest firmware for the device.

• Question 720:

  An IT department asks a newly hired employee to use a personal laptop until the company can provide one.

  Which of the following policies most applicable is to this situation?

  A. IAM
  B. BYOD
  C. DLP
  D. AUP
  B. BYOD

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  Explanation

  BYOD (Bring Your Own Device)policies define rules for using personal devices on the company network. Since the new employee is using a personal laptop, this policy applies.

  Breakdown of Options:

  Option A. IAM (Identity and Access Management) - Governs user permissions not device policies,.

  Option B. BYOD (Bring Your Own Device) - Correct answer. Covers using personal devices for work.

  Option C. DLP (Data Loss Prevention) - Focuses on preventing sensitive data leaks not device usage, policies.

  Option D. AUP (Acceptable Use Policy) - Covers internet and system usage, but not personal device rules.