CompTIA CompTIA Certifications N10-009 Questions & Answers

• Question 141:

  Which of the following fiber connector types is the most likely to be used on a network interface card?

  A. LC

  B. SC

  C. ST

  D. MPO

  Correct Answer: A

  Definition of Fiber Connector Types:

  uk.co.certification.simulator.questionpool.PList@42f1bce4 Common Usage:

  Selection Criteria:

  References:

  CompTIA Network+ study materials on fiber optics and connector types.

• Question 142:

  A network administrator performed upgrades on a server and installed a new NIC to improve performance. Following the upgrades, usera are unable to reach the server. Which of the following is the most likely reason.

  A. The PoE power budget was exceeded.

  B. TX/RX was transposed.

  C. A port security violation occured.

  D. An incorrect cable type was installed.

  Correct Answer: D

  When a network administrator installs a new Network Interface Card (NIC) and users are unable to reach the server, one of the common issues is the use of an incorrect cable type. Network cables must match the specifications required by

  the NIC and the network infrastructure (e.g., Cat5e, Cat6 for Ethernet). NIC Compatibility: The new NIC might require a specific type of cable to function properly. Using a cable not rated for the NIC's required speeds or capabilities can result

  in connectivity issues.

  Cable Standards: Different NICs and network devices might need different cabling standards (straight-through vs. crossover cables, or specific fiber optic types). Connection Types: Ensuring that the cable connectors are appropriate for the

  NIC ports (e.g., RJ45 for Ethernet, LC connectors for fiber optics).

  Network References:

  CompTIA Network+ N10-007 Official Certification Guide: Discusses network cabling standards and NIC specifications.

  Cisco Networking Academy: Provides insights into cabling and NIC configurations for optimal network performance.

  Network+ Certification All-in-One uide: Offers comprehensive details on troubleshooting network connectivity issues, including cabling problems.

• Question 143:

  A network administrator configured a router interface as 10.0.0.95 255.255.255.240. The administrator discovers that the router is not routing packets to a web server with IP 10.0.0.81/28. Which of the following is the best explanation?

  A. Theweb server Is In adifferent subnet.

  B. Therouter interface isa broadcast address.

  C. TheIP address spaceis a class A network.

  D. Thesubnet is in a private address space.

  Correct Answer: B

  Understanding Subnetting:

  uk.co.certification.simulator.questionpool.PList@1ef5565a Calculating the Subnet Range:

  Router Interface Configuration:

  Comparison with Other Options:

  Resolution:

  References:

  CompTIA Network+ study materials on subnetting and IP address configuration.

• Question 144:

  A network administrator is in the process of installing 35 PoE security cameras. After the administrator installed and tested the new cables, the administrator installed the cameras. However, a small number of the cameras do not work. Which of the following is the most reason?

  A. Incorrect wiring standard

  B. Power budget exceeded

  C. Signal attenuation

  D. Wrong voltage

  Correct Answer: B

  When installing multiple Power over Ethernet (PoE) devices like security cameras, it is crucial to ensure that the total power requirement does not exceed the power budget of the PoE switch. Each PoE switch has a maximum power capacity,

  and exceeding this capacity can cause some devices to fail to receive power. PoE Standards: PoE switches conform to standards such as IEEE 802.3af (PoE) and 802.3at (PoE+), each with specific power limits per port and total power

  capacity.

  Power Calculation: Adding up the power requirements of all connected PoE devices can help determine if the total power budget of the switch is exceeded. Symptoms: When the power budget is exceeded, some devices, typically those

  farthest from the switch or connected last, may not power up or function correctly.

  Network References:

  CompTIA Network+ N10-007 Official Certification Guide: Covers PoE standards and troubleshooting power issues.

  Cisco Networking Academy: Discusses PoE technologies, power budgeting, and managing PoE devices.

  Network+ Certification All-in-One uide: Provides information on PoE setup, including power budget considerations.

• Question 145:

  A user is unable to navigate to a website because the provided URL is not resolving to the correct IP address. Other users are able to navigate to the intended website without issue. Which of the following is most likely causing this issue?

  A. Hosts file

  B. Self-signed certificate

  C. Nameserver record

  D. IP helper ANS

  Correct Answer: A

  Role of the Hosts File:

  uk.co.certification.simulator.questionpool.PList@5a62cfc0 Common Issues with the Hosts File:

  Why Other Options are Less Likely:

  Troubleshooting Steps:

  References:

  CompTIA Network+ study materials and system administration documentation.

• Question 146:

  Which of the following can also provide a security feature when implemented?

  A. NAT

  B. BGP

  C. FHRP

  D. EIGRP

  Correct Answer: A

  NAT (Network Address Translation) helps hide internal IP addresses from external networks, adding a layer of security by preventing direct access to internal systems from the outside.

• Question 147:

  A company wants to implement a disaster recovery site or non-critical applicance, which can tolerance a short period of downltime. Which of the followig type of sites should the company impelement to achive this goal?

  A. Hot

  B. Cold

  C. Warm

  D. Passive

  Correct Answer: C

  A warm site is a compromise between a hot site and a cold site, providing a balance between cost and recovery time. It is partially equipped with the necessary hardware, software, and infrastructure, allowing for a quicker recovery compared

  to a cold site but at a lower cost than a hot site.

  Recovery Time: Warm sites can be operational within hours to a day, making them suitable for non-critical applications that can tolerate short downtimes. Cost-Effectiveness: Warm sites are more economical than hot sites as they do not

  require all systems to be fully operational at all times.

  Network References:

  CompTIA Network+ N10-007 Official Certification Guide: Discusses disaster recovery strategies and the different types of recovery sites. Cisco Networking Academy: Provides training on disaster recovery planning and site selection. Network

  + Certification All-in-One uide: Explains the characteristics of hot, warm, and cold sites and their use cases in disaster recovery planning. Warm sites offer a practical solution for maintaining business continuity for non-critical applications, balancing the need for availability with cost considerations.

• Question 148:

  A client wants to increase overall security after a recent breach. Which of the following would be best to implement? (Select two.)

  A. Least privilege network access

  B. Dynamic inventeries

  C. Central policy management

  D. Zero-touch provisioning

  E. Configuration drift prevention

  F. Subnet range limits

  Correct Answer: AC

  To increase overall security after a recent breach, implementing least privilege network access and central policy management are effective strategies. Least Privilege Network Access: This principle ensures that users and devices are

  granted only the access necessary to perform their functions, minimizing the potential for unauthorized access or breaches. By limiting permissions, the risk of an attacker gaining access to critical parts of the network is reduced. Central

  Policy Management: Centralized management of security policies allows for consistent and streamlined implementation of security measures across the entire network. This helps in quickly responding to security incidents, ensuring

  compliance with security protocols, and reducing the chances of misconfigurations.

  Network References:

  CompTIA Network+ N10-007 Official Certification Guide: Discusses network security principles, including least privilege and policy management. Cisco Networking Academy: Provides training on implementing security policies and access

  controls.

  Network+ Certification All-in-One uide: Covers strategies for enhancing network security and managing policies effectively.

• Question 149:

  A storage network requires reduced overhead and increased efficiency for the amout of data being sent.

  Which of the following should an engineer likely configure to meet these requirements>?

  A. Link speed

  B. Jumbo frames

  C. QoS

  D. 802.1q tagging

  Correct Answer: B

  Jumbo frames are Ethernet frames with a payload greater than the standard maximum transmission unit (MTU) of 1500 bytes. Configuring jumbo frames can reduce overhead and increase efficiency in storage networks by allowing more data

  to be sent in each frame, thus reducing the number of frames needed to transmit the same amount of data.

  Reduced Overhead: By sending larger frames, the relative overhead for headers and acknowledgments is reduced.

  Increased Efficiency: Larger frames mean fewer packets to process, leading to better utilization of network bandwidth and improved performance in high- throughput environments like storage networks. Configuration: Requires support from

  all devices in the network path, including switches and network interface cards (NICs).

  Network References:

  CompTIA Network+ N10-007 Official Certification Guide: Explains jumbo frames and their benefits in reducing network overhead.

  Cisco Networking Academy: Provides training on network optimization techniques, including the use of jumbo frames.

  Network+ Certification All-in-One uide: Covers advanced Ethernet features, including jumbo frames and their configuration for improved network performance.

• Question 150:

  A network administrator needs to set up a multicast network for audio and video broadcasting.

  Which of the following networks would be the most appropriate for this application?

  A. 172.16.0.0/24

  B. 192.168.0.0/24

  C. 224.0.0.0/24

  D. 240.0.0.0/24

  Correct Answer: C

  Reference: CompTIA Network+ Certification Exam Objectives - IP Addressing section.