CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 241:

  A network administrator is conducting an assessment and finds network devices that do not meet standards.

  Which of the following configurations is considered a set of rules that devices should adhere to?

  A. Production
  B. Backup
  C. Candidate
  D. Golden
  D. Golden

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  Explanation

  The correct answer is golden configuration. This is a reference standard or baseline that defines the approved settings and rules devices should follow. Any deviation from the golden configuration indicates drift or misconfiguration that must be remediated.

  Option A: Production refers to the live environment but doesn't define a standard.

  Option B: Backup configurations are stored copies, not the standard rules.

  Option C: Candidate configuration is a proposed change being tested, not the final baseline.

  By enforcing golden configurations, administrators ensure compliance, maintain security standards, and improve consistency across the enterprise.

  References:

  Domain: Network Operations -- Configuration standards, golden images/configs.

• Question 242:

  Which of the following steps in the troubleshooting methodology would be next after putting preventive measures in place?

  A. Implement the solution.
  B. Verify system functionality.
  C. Establish a plan of action.
  D. Test the theory to determine cause.
  B. Verify system functionality.

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  Explanation

  After implementing a solution and putting preventive measures in place, the next step is to verify that the system is functioning correctly. This ensures that the issue has been fully resolved.

• Question 243:

  A company's network is experiencing high latency and packet loss during peak hours. Network monitoring tools show increased traffic on a switch.

  Which of the following should a network technician implement to reduce the network congestion and improve performance?

  A. Load balancing
  B. Port mirroring
  C. Quality of Service
  D. Spanning Tree Protocol
  C. Quality of Service

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  Explanation

  Quality of Service (QoS): This is a feature used in networking to prioritize certain types of traffic. By configuring QoS, network administrators can allocate higher bandwidth to time-sensitive applications like VoIP, video conferencing, or critical business applications during peak usage times. This helps to reduce latency and packet loss, which are often caused by congestion.

  Load Balancing (A): While load balancing is useful in distributing traffic across multiple servers or paths, it does not address congestion on a single switch.

  Port Mirroring (B): This is used for monitoring network traffic for troubleshooting and diagnostics but does not alleviate congestion.

  Spanning Tree Protocol (D): STP prevents switching loops in redundant network topologies, but it is not designed to handle traffic prioritization or congestion issues.

• Question 244:

  A network administrator needs to add access points to the network because coverage in some areas is improper.

  Which of the following should the administrator do first?

  A. Interference analysis
  B. Wireless survey
  C. Traffic analysis
  D. Packet capture
  B. Wireless survey

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  Explanation

  A wireless survey is the first step that a network administrator should do before adding access points to the network. A wireless survey is a process of collecting data about the wireless environment, such as signal strength, channel usage, interference, and coverage. A wireless survey can help the network administrator to determine the optimal locations and configurations for the access points to provide the best possible coverage and performance for the wireless network. A wireless survey can also help to identify and troubleshoot any issues that may cause improper coverage in some areas.

  https://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless-controllers/116057-site-survey-guidelines-wlan-00.html

• Question 245:

  Which of the following protocols is used to send networking status messages between clients and servers?

  A. SSH
  B. DHCP
  C. NTP
  D. SNMP
  D. SNMP

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  Explanation

  The correct answer is SNMP (Simple Network Management Protocol) because it is specifically designed to collect and transmit network management and status information between managed devices and management systems. According to CompTIA Network+ (N10-009) objectives, SNMP is used for monitoring and managing network devices such as routers, switches, servers, and printers.

  SNMP operates using a manager-agent model. The SNMP manager (such as a network monitoring server) communicates with SNMP agents installed on network devices. Agents send traps and inform messages, which are unsolicited status alerts indicating events such as device failures, high CPU usage, or link outages.

  The manager can also poll agents to retrieve performance metrics and configuration details stored in the Management Information Base (MIB).

  SSH (Option A) is used for secure remote administration.

  DHCP (Option B) dynamically assigns IP addresses.

  NTP (Option C) synchronizes time between devices. None of these protocols are designed for network status monitoring and alert messaging.

  Therefore, SNMP is the correct protocol for sending networking status messages between devices and management systems.

• Question 246:

  A support agent receives a report that a remote user's wired devices are constantly disconnecting and have slow speeds. Upon inspection, the support agent sees that the user's coaxial modern has a signal power of -97dB.

  A. Removing any spliters connecte to the line
  B. Switching the devices to wireless
  C. Moving the devices closer to the modern
  D. Lowering the network speed
  A. Removing any spliters connecte to the line

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  Explanation

  A signal power of -97dB indicates a very weak signal, which can cause connectivity issues and slow speeds. Splitters on a coaxial line can degrade the signal quality further, so removing them can help improve the signal strength and overall connection quality.

  Signal Quality: Splitters can reduce the signal strength by dividing the signal among multiple lines, which can be detrimental when the signal is already weak.

  Direct Connection: Ensuring a direct connection from the modem to the incoming line can maximize signal quality and reduce potential points of failure.

  References:

  CompTIA Network+ N10-007 Official Certification Guide: Discusses troubleshooting connectivity issues and the impact of signal strength on network performance.

  Cisco Networking Academy: Provides insights on maintaining optimal signal quality in network setups.

  Network+ Certification All-in-One Exam Guide: Covers common network issues, including those related to signal degradation and ways to mitigate them.

• Question 247:

  Which of the following describes the best reason for using BGP?

  A. Preventing a loop within a LAN
  B. Improving reconvergence times
  C. Exchanging router updates with a different ISP
  D. Sharing routes with a Layer 3 switch
  C. Exchanging router updates with a different ISP

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  Explanation

  BGP (Border Gateway Protocol) is used for routing data between different ISPs, making it essential for the functioning of the internet. Its primary use is for exchanging routing information between autonomous systems, especially different ISPs. Preventing loops within a LAN is handled by protocols like Spanning Tree Protocol (STP), while improving reconvergence times and sharing routes with a Layer 3 switch are functions of other protocols or internal mechanisms.

  References:

  The CompTIA Network+ training emphasizes BGP's role in the exchange of routing information across different ISPs and autonomous systems.

• Question 248:

  A network administrator needs to divide 192.168.1.0/24 into two equal halves.

  Which of the following subnet masks should the administrator use?

  A. 255.255.0.0
  B. 255.255.254.0
  C. 255.255.255.0
  D. 255.255.255.128
  D. 255.255.255.128

• Question 249:

  Which of the following is most closely associated with having a leased line to a public cloud provider?

  A. VPN
  B. Direct Connect
  C. Internet gateway
  D. Private cloud
  B. Direct Connect

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  Explanation

  Direct Connect is the option most closely associated with having a leased line to a public cloud provider, as defined in the CompTIA Network+ N10-009 objectives under cloud connectivity and WAN technologies. Direct Connect (or equivalent services such as Azure ExpressRoute or Google Cloud Interconnect) provides a dedicated, private physical connection between an organization's on-premises network and a public cloud provider's infrastructure. This connection bypasses the public internet, offering consistent bandwidth, lower latency, improved performance, and enhanced security.

  A VPN uses encrypted tunnels over the public internet, which does not qualify as a leased line and is subject to internet congestion and variable performance. An internet gateway simply allows cloud resources to communicate with the public internet and does not imply a private or dedicated connection. A private cloud refers to a deployment model where cloud resources are dedicated to a single organization; it does not describe the connectivity method or the use of a leased circuit.

  According to Network+ objectives, leased-line connectivity to cloud providers is commonly used by enterprises that require high availability, predictable throughput, regulatory compliance, or secure hybrid cloud architectures. Direct Connect is a foundational component of hybrid networking strategies, linking on-premises environments directly to public cloud services using provider-managed circuits.

• Question 250:

  A customer lost the connection to the telephone system. The administration console is configured with multiple network interfaces and is connected to multiple switches. The network administrator troubleshoots and verifies the following:

  1. The support team is able to connect remotely to the administration console.

  2. Rebooting the switch shows solid link and activity lights even on unused ports.

  3. Rebooting the telephone system does not bring the system back online.

  4. The console is able to connect directly to individual modules successfully.

  Which of the following is the most likely reason the customer lost the connection?

  A. A switch failed.
  B. The console software needs to be reinstalled.
  C. The cables to the modules need to be replaced.
  D. A module failed.
  A. A switch failed.