CompTIA CompTIA Certifications N10-009 Questions & Answers

• Question 231:

  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.

  Correct Answer: A

  Importance of Proper Termination:

  uk.co.certification.simulator.questionpool.PList@4536cd11 Interference Troubleshooting:

  Why Other Options are Less Likely:

  Corrective Actions:

  References:

  CompTIA Network+ study materials and structured cabling installation guides.

• Question 232:

  A network engineer wants to implement a new IDS between the switch and a router connected to the LAN. The engineer does not want to introduce any latency by placing the IDS in line with the gateway. The engineer does want to ensure that the IDS sees all packets without any loss. Which of the following is the best way for the engineer to implement the IDS?

  A. Use a network tap.

  B. Use Nmap software.

  C. Use a protocol analyzer.

  D. Use a port mirror.

  Correct Answer: D

  Reference: CompTIA Network+ Certification Exam Objectives - Network Security section.

• Question 233:

  A network administrator is planning to host a company application in the cloud, making the application available for all internal and third-party users. Which of the following concepts describes this arrangement?

  A. Multitenancy

  B. VPC

  C. NFV

  D. SaaS

  Correct Answer: A

  Multitenancy is a cloud computing architecture where a single instance of software serves multiple customers or tenants. Each tenant's data is isolated and remains invisible to other tenants. Hosting a company application in the cloud to be available for both internal and third-party users fits this concept, as it allows shared resources and infrastructure while maintaining data separation and security. References: CompTIA Network+ Exam Objectives and official study guides.

• Question 234:

  An organization wants to ensure that incoming emails were sent from a trusted source. Which of the following DNS records is used to verify the source?

  A. TXT

  B. AAAA

  C. CNAME

  D. MX

  Correct Answer: A

  A TXT record can be used to store SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail) information, which help verify that an email has been sent from a trusted source.

• Question 235:

  A systems administrator is investigating why users cannot reach a Linux web server with a browser but can ping the server IP. The server is online, the web server process is running, and the link to the switch is up. Which of the following commands should the administrator run on the server first?

  A. traceroute

  B. netstat

  C. tcpdump

  D. arp

  Correct Answer: B

  The netstat command provides information about network connections, routing tables, interface statistics, masquerade connections, and multicast memberships. Running netstat on the server can help the administrator verify that the web server process is listening on the expected port (e.g., port 80 for HTTP or port 443 for HTTPS) and that there are no issues with network connections. This is a crucial first step in diagnosing why the web server is not accessible via a browser.References: CompTIA Network+ study materials.

• Question 236:

  Which of the following network traffic type is sent to all nodes on the network?

  A. Unicast

  B. Broadcast

  C. Multicast

  D. Anycast

  Correct Answer: B

  Broadcast traffic is sent to all nodes on the network. In a broadcast, a single packet is transmitted to all devices in the network segment. This is commonly used for tasks like ARP (Address Resolution Protocol) requests. Broadcast Domain: All

  devices within the same broadcast domain will receive broadcast traffic.

  Network Types: Ethernet networks commonly use broadcast traffic for certain functions, including network discovery and addressing. IPv4 Broadcast: An IPv4 broadcast address (e.g., 255.255.255.255) ensures the packet is sent to all

  devices on the network.

  Network References:

  CompTIA Network+ N10-007 Official Certification Guide: Explains network traffic types, including broadcast, unicast, and multicast. Cisco Networking Academy: Provides training on network communication methods and traffic types. Network

  + Certification All-in-One uide: Discusses different types of network traffic and their uses in various network scenarios. Broadcast traffic is essential for network operations that require communication with all nodes, such as ARP requests or DHCP discovery messages.

• Question 237:

  A company's marketing team created a new application and would like to create a DNS record for newapplication.comptia.org that always resolves to the same address as www.comptia.org. Which of the following records should the administrator use?

  A. SOA

  B. MX

  C. CNAME

  D. NS

  Correct Answer: C

  A CNAME (Canonical Name) record is used in DNS to alias one domain name to another. This means that newapplication.comptia.org can be made to resolve to the same IP address as www.comptia.org by creating a CNAME record pointing newapplication.comptia.org to www.comptia.org. SOA (Start of Authority) is used for DNS zone information, MX (Mail Exchange) is for mail server records, and NS (Name Server) is for specifying authoritative DNS servers. Reference:

  The DNS section of the CompTIA Network+ materials describes the use of CNAME records for creating domain aliases.

• Question 238:

  A network architect needs to create a wireless field network to provide reliable service to public safety vehicles. Which of the following types of networks is the best solution?

  A. Mesh

  B. Ad hoc

  C. Point-to-point

  D. Infrastructure

  Correct Answer: A

  A mesh network is the best solution for providing reliable wireless service to public safety vehicles. In a mesh network, each node (vehicle) can connect to multiple other nodes, providing multiple paths for data to travel. This enhances reliability and redundancy, ensuring continuous connectivity even if one or more nodes fail. Mesh networks are highly resilient and are well-suited for dynamic and mobile environments such as public safety operations.References: CompTIA Network+ study materials.

• Question 239:

  Which of the following network devices converts wireless signals to electronic signals?

  A. Router

  B. Firewall

  C. Access point

  D. Load balancer

  Correct Answer: C

  Role of an Access Point (AP):

  uk.co.certification.simulator.questionpool.PList@7be106c3 Functionality:

  Comparison with Other Devices:

  Deployment:

  References:

  CompTIA Network+ study materials on wireless networking and access points.

• Question 240:

  A network administrator is notified that a user cannot access resources on the network. The network administrator checks the physical connections to the workstation labeled User 3 and sees the Ethernet is properly connected. However, the network interface's indicator lights are not blinking on either the computer or the switch. Which of the following Is the most likely cause?

  A. Theswitch failed.

  B. Thedefault gateway is wrong.

  C. Theport Is shut down.

  D. TheVLAN assignment is incorrect.

  Correct Answer: C

  When a network interface's indicator lights are not blinking on either the computer or the switch, it suggests a physical layer issue. Here is the detailed reasoning: Ethernet Properly Connected: The Ethernet cable is correctly connected, eliminating issues related to a loose or faulty cable. No Indicator Lights: The absence of blinking indicator lights on both the computer and the switch typically points to the port being administratively shut down. Switch Port Shut Down: In networking, a switch port can be administratively shut down, disabling it from passing any traffic. This state is configured by network administrators and can be verified and changed using the command-line interface (CLI) of the switch. Command to Check and Enable Port: bash Copy code Switch> enable Switch# configure terminal Switch(config)# interface [interface id]

  Switch(config-if)# no shutdown

  uk.co.certification.simulator.questionpool.PList@75749ff2 : Basic Configuration Commands PDF, sections on interface configuration (e.g., shutdown, no shutdown).