CompTIA N10-008 Online Practice Questions and Exam Preparation

CompTIA N10-008 Online Questions & Answers

• Question 761:

  A network technician is working at a new office location and needs to connect one laptop to another to transfer files. The laptops are newer models and do not have Ethernet ports. Access points are not available either. Which of the following types of wireless network SSIDs does the network technician need to configure to be able to connect the laptops together?

  A. Independent Basic Service Set
  B. Extended Service Set
  C. Distribution System Service
  D. Basic Service Set
  A. Independent Basic Service Set

• Question 762:

  A technician troubleshoots a computer that has intermittent network connectivity and notices the termination point is loose. The technician also observes that the patch cable has already been replaced.

  Which of the following should the technician do NEXT?

  A. Use a tone generator to trace the cable
  B. Use a multimeter to determine if PoE is available on the switchport
  C. Use a cable crimper to replace the RJ45 connector on the patch cable
  D. Use a punchdown tool to reseat the copper in the wall jack
  D. Use a punchdown tool to reseat the copper in the wall jack

• Question 763:

  A network technician is configuring a new subnet on the distribution switch to support 15 network printers. Which of the following available subnets is the best choice to support all 15 printers on the LAN?

  A. 10.1.15.0/27
  B. 10.8.4.0/30
  C. 10.10.8.0/28
  D. 10.15.1.0/29
  A. 10.1.15.0/27

• Question 764:

  An administrator would like to create a fault-tolerant ring between three switches within a Layer 2 network. Which of the following Ethernet features should the administrator employ?

  A. Spanning Tree Protocol
  B. Open Shortest Path First
  C. Port mirroring
  D. An interior gateway protocol
  A. Spanning Tree Protocol

  ---

  Explanation/Reference:

  Spanning Tree Protocol (STP) is a network protocol that ensures a loop-free topology in Ethernet networks by actively blocking certain links and enabling others. STP prevents loops by putting some of the links in a blocking state, effectively creating a loop- free topology. This ensures that there is only one active path between two devices, which helps prevent network loops and the associated problems (such as broadcast storms) that can result from them. STP is used to create a fault-tolerant ring between three switches within a Layer 2 network.

• Question 765:

  A network administrator is in the process of installing a new broadband circuit. The administrator assigns the new static IP address with a /30 prefix. However, the administrator is unable to connect to the internet. Given the following information:

  IP address: 4.11.17.6

  Subnet mask: 255.255.255.252

  Default gateway: 4.11.17.1 DNS1: 1.1.1.1

  DNS2: 8.8.8.8

  Which of the following is the most likely cause?

  A. Routing table
  B. Subnet mask
  C. DNS
  D. Default gateway
  D. Default gateway

  ---

  Explanation/Reference:

  The most likely cause of the administrator's inability to connect to the internet is the incorrect default gateway. The default gateway is the IP address of the router that connects the local network to the internet. The default gateway should be in the same subnet as the IP address of the device. However, in this case, the IP address of the device is 4.11.17.6 and the subnet mask is 255.255.255.252, which means the subnet has only four addresses: 4.11.17.4, 4.11.17.5, 4.11.17.6, and 4.11.17.7. The first and the last addresses are reserved for the network and the broadcast, respectively, so the only valid addresses for the device and the gateway are 4.11.17.5 and 4.11.17.6. Therefore, the default gateway should be 4.11.17.5, not 4.11.17.1, which is in a different subnet. The routing table, the subnet mask, and the DNS are not the causes of the problem, as they are either correct or irrelevant for the internet connectivity.

• Question 766:

  A network administrator determines that even when optimal wireless coverage is configured, the network users still report constant disconnections After troubleshooting, the administrator determines that moving from one location to another causes the disconnection.

  Which of the following settings should provide better network stability?

  A. Client association timeout
  B. RSSl roaming threshold
  C. RF attenuation ratio
  D. EIRP power setting
  B. RSSl roaming threshold

  ---

  Explanation/Reference:

  In this case, the most likely cause of the constant disconnections when moving from one location to another is likely due to a problem with the roaming functionality of the wireless network. The setting that would likely provide better network stability in this situation is the RSSI roaming threshold, which determines the signal strength required for a client device to remain connected to the wireless network. If the roaming threshold is set too low, the client device may disconnect and reconnect to the network too frequently as it moves between different access points. On the other hand, if the threshold is set too high, the client device may not roam to a new access point when necessary, leading to a loss of connectivity. Adjusting the RSSI roaming threshold to an appropriate value may help to improve the stability of the wireless network in this situation.

• Question 767:

  The results of a recently completed site survey indicate a significant, undesired RSSI in the parking lot and other exterior areas near the main building. The wireless technician would like to mitigate access to the wireless network in exterior access areas. The current access point settings are listed in the following table:

  

  Which of the following is the BEST step for the technician to take to resolve the issue?

  A. Reconfigure AP2 and AP3 for non-overlapping channels.
  B. Implement directional antennas on AP1 and AP2.
  C. Raise the power settings on AP2 and AP3.
  D. Change the SSID on AP1 and AP2.
  B. Implement directional antennas on AP1 and AP2.

• Question 768:

  A technician wants to monitor and provide traffic segmentation across the network. The technician would like to assign each department a specific identifier. Which of the following will the technician MOST likely use?

  A. Flow control
  B. Traffic shaping
  C. VLAN fagging
  D. Network performance baselines
  C. VLAN fagging

  ---

  Explanation/Reference:

  To monitor and provide traffic segmentation across the network, a technician may use the concept of VLANs (Virtual Local Area Networks). VLANs are a way of dividing a single physical network into multiple logical networks, each with its own unique identifier or "tag."

  By assigning each department a specific VLAN identifier, the technician can segment the network traffic and ensure that the different departments' traffic is kept separate from one another. This can help to improve network security, performance, and scalability, as well as allowing for better monitoring and control of the network traffic.

  To implement VLANs, the technician will need to configure VLAN tagging on the network devices, such as switches and routers, and assign each department's devices to the appropriate VLAN. The technician may also need to configure VLAN trunking to allow the different VLANs to communicate with each other.

  By using VLANs, the technician can effectively monitor and segment the network traffic, providing better control and visibility into the network.

• Question 769:

  An engineer is troubleshooting poor performance on the network that occurs during work hours. Which of the following should the engineer do to improve performance?

  A. Replace the patch cables.
  B. Create link aggregation.
  C. Create separation rules on the firewall.
  D. Create subinterfaces on the existing port.
  B. Create link aggregation.

  ---

  Explanation/Reference:

  If the poor network performance is happening during work hours, it could be due to high network traffic. Therefore, to improve performance, the engineer should create link aggregation to increase the available bandwidth

• Question 770:

  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
  A. Mesh

  ---

  Explanation/Reference:

  A mesh network is the best solution for creating a wireless field network to provide reliable service to public safety vehicles. A mesh network is a type of wireless network that consists of multiple nodes that communicate with each other directly or through intermediate nodes, forming a web-like topology. A mesh network does not rely on a central access point or router, but rather on the cooperation and coordination of the nodes themselves. A mesh network has several advantages for public safety applications, such as12: High availability and resilience: A mesh network can automatically route around failures or congestion, ensuring that the network remains operational even if some nodes are damaged or disconnected. A mesh network can also self-heal and self- configure, adapting to changes in the network topology or environment. Extended coverage and scalability: A mesh network can extend the wireless signal beyond the range of a single node, by using other nodes as relays or repeaters. A mesh network can also accommodate more nodes and devices, by adding more links and paths between them. Low cost and easy deployment: A mesh network can reduce the cost and complexity of installing and maintaining a wireless infrastructure, by eliminating the need for expensive cabling, towers, or antennas. A mesh network can also be deployed quickly and flexibly, by simply adding or removing nodes as needed. A mesh network is especially suitable for public safety vehicles, because it can provide reliable wireless communication in challenging scenarios, such as12: Disaster response: A mesh network can be deployed rapidly in areas where the existing wireless infrastructure is damaged or unavailable, such as after an earthquake, flood, or fire. A mesh network can also support emergency services, such as fire fighting, search and rescue, or medical assistance, by enabling data, voice, and video transmission among the responders and command centers. Mobile surveillance: A mesh network can enable real-time monitoring and control of public safety vehicles, such as police cars, ambulances, or drones, by providing high-bandwidth and low-latency wireless connectivity. A mesh network can also support video streaming, location tracking, remote sensing, or analytics applications for public safety purposes. Event management: A mesh network can enhance the security and efficiency of large-scale events, such as concerts, festivals, or parades, by providing wireless coverage and capacity for the event organizers and participants. A mesh network can also support crowd management, traffic control, or public announcement applications for event management. The other options are not the best solutions for creating a wireless field network to provide reliable service to public safety vehicles. An ad hoc network is a type of wireless network that consists of devices that communicate with each other directly without any central coordination or infrastructure. An ad hoc network is simple and flexible, but it has limited scalability and performance3. A point-to-point network is a type of wireless network that consists of two devices that communicate with each other over a single link. A point-to- point network is fast and secure, but it has limited coverage and functionality. An infrastructure network is a type of wireless network that consists of devices that communicate with each other through an access point or router. An infrastructure network is stable and robust, but it has high cost and complexity.