CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 601:

  A network technician is troubleshooting internet connectivity issues with users in a subnet. From a host, the technician runs tcpdump and then attempts to navigate to a website using a web browser. The technician receives the following output:

  

  Afterward, the browser displays an error.

  Which of the following explains this issue?

  A. A routing loop is within the network.
  B. The host is configured with incorrect DNS settings.
  C. A broadcast storm is occurring on the subnet.
  D. The host is missing a route to the website.
  D. The host is missing a route to the website.

• Question 602:

  A security engineer wants to provide a secure, dedicated, alternate access method into an IT network infrastructure to administer connected devices and IT assets.

  Which of the following is the engineer most likely to implement?

  A. Remote desktop gateway
  B. Authentication and authorization controls
  C. Out-of-band management
  D. Secure Shell
  C. Out-of-band management

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  Explanation

  Out-of-band management is a method of accessing network devices and IT assets through a dedicated channel that is separate from the normal data traffic. This provides a secure and alternate way to administer the network infrastructure, especially in case of failures or emergencies. Remote desktop gateway is a service that allows remote access to desktops and applications on a network. Authentication and authorization controls are mechanisms that verify the identity and permissions of users and devices on a network. Secure Shell is a protocol that encrypts the communication between a client and a server on a network.

• Question 603:

  A network technician is troubleshooting a web application's poor performance. The office has two internet links that share the traffic load.

  Which of the following tools should the technician use to determine which link is being used for the web application?

  A. netstat
  B. nslookup
  C. ping
  D. tracert
  D. tracert

• Question 604:

  After installing a series of Cat 8 keystones, a data center architect notices higher than normal interference during tests.

  Which of the following steps should the architect take to troubleshoot the issue?

  A. Check to see if the end connections were wrapped in copper tape before terminating.
  B. Use passthrough modular crimping plugs instead of traditional crimping plugs.
  C. Connect the RX/TX wires to different pins.
  D. Run a speed test on a device that can only achieve 100Mbps speeds.
  A. Check to see if the end connections were wrapped in copper tape before terminating.

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  Explanation

  Cat 8 keystones are shielded to prevent interference from external sources, but they also require proper grounding to avoid interference from within the cable. Wrapping the end connections with copper tape before terminating them is one way to ensure a good ground connection and reduce interference. Using passthrough modular crimping plugs, connecting the RX/TX wires to different pins, or running a speed test on a slow device are not relevant or effective steps to troubleshoot the issue.

• Question 605:

  A network engineer is installing hardware in a newly renovated data center. Major concerns that were addressed during the renovation induded air circulation, building power redundancy, and the need for continuous monitoring. The network engineer IS creating alerts based on the following operation specifications:

  

  Which of the following should the network engineer configure?

  A. Environmental monitoring alerts for humidity greater than 95%
  B. SIEM to parse syslog events for a failed power supply
  C. SNMP traps to report when the chassis temperature exceeds 950F (3500)
  D. UPS monitoring to report when input voltage drops below 220VAC
  C. SNMP traps to report when the chassis temperature exceeds 950F (3500)

• Question 606:

  Which of the following is used to segment traffic within a switch?

  A. NAT
  B. VLAN
  C. DNS
  D. SNMP
  B. VLAN

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  Explanation

  Virtual Local Area Networks (VLANs) are used to logically segment a network within a switch, creating separate broadcast domains. Devices in different VLANs cannot communicate directly without routing. This improves security, performance, and network organization. NAT translates addresses, DNS resolves names, and SNMP is used for monitoring. VLANs are fundamental for network segmentation and traffic isolation.

• Question 607:

  A network administrator needs to configure the core switches where multiple connections between data centers are used. Given the following requirements:

  1. Fault tolerance and redundancy.

  2. Vendor interoperability

  3. Increased bandwidth

  4. Cost effectiveness

  5. Simplified management

  Which of the following should the administrator configure?

  A. Spanning tree
  B. Interface speeds to 10GB
  C. Link aggregation
  D. Jumbo frames
  C. Link aggregation

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  Explanation

  The best answer is C. Link aggregation. The requirements point directly to combining multiple physical links into one logical connection. Link aggregation provides higher total bandwidth, supports redundancy if one member link fails, and simplifies administration because the bundle is managed as a single logical interface instead of several separate ones.

  Another important clue is vendor interoperability. Standards-based link aggregation, such as LACP, is designed to work across different vendors when supported properly. That makes it a strong match for inter-data-center switch environments where equipment may not all come from the same manufacturer.

  The other choices do not satisfy the full requirement list. Spanning tree helps prevent loops, but it can block redundant links instead of actively using them for extra bandwidth. Setting interface speeds to 10GB increases speed per port, but it does not by itself provide the logical bundling, simplified management, or redundancy benefits described. Jumbo frames can improve efficiency for some traffic types, but they are not the right answer for bandwidth aggregation and resilient uplinks.

  Because the question asks for a solution that improves throughput, keeps redundancy, remains cost effective, and is easier to manage, link aggregation is the strongest fit.

• Question 608:

  A company receives a cease-and-desist order from its ISP regarding prohibited torrent activity.

  Which of the following should be implemented to comply with the cease-and-desist order?

  A. MAC security
  B. Content filtering
  C. Screened subnet
  D. Perimeter network
  B. Content filtering

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  Explanation

  Content filtering can be used to block or restrict access to websites and services that facilitate torrenting and other prohibited activities. By implementing content filtering, the company can comply with the ISP's cease-and-desist order and prevent users from accessing torrent sites and engaging in prohibited activities.

  References:

  CompTIA Network+ study materials.

• Question 609:

  A company is designing a new complex. The primary and alternate data centers will be in separate buildings 6.2mi (10km) apart and will be connected via fiber.

  Which of the following types of SFP is the best choice?

  A. 10GBASE-SR
  B. 10000BASE-LX
  C. 10GBASE-LR
  D. 1000BASE-SX
  C. 10GBASE-LR

• Question 610:

  A network technician is investigating excessive logging to a syslog server.

  Which of the following should be adjusted?

  A. Update logging host IP
  B. Change asynchronous logging
  C. Stop logging SSH events
  D. Adjust the logging level
  D. Adjust the logging level