CompTIA N10-008 Online Practice Questions and Exam Preparation

CompTIA N10-008 Online Questions & Answers

• Question 281:

  An IT administrator received an assignment with the following objectives

  1.

  Conduct a total scan within the company's network tor all connected hosts

  2.

  Detect all the types of operating systems running on all devices

  3.

  Discover all services offered by hosts on the network

  4.

  Find open ports and detect security risks.

  Which of the following command-line tools can be used to achieve these objectives?

  A. nmap
  B. arp
  C. netatat
  D. tcpdump
  A. nmap

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  Explanation/Reference:

  Nmap (Network Mapper) is a free and open source command line tool that can be used to scan a network for all connected hosts, detect the types of operating systems running on all devices, discover all services offered by hosts on the network, find open ports, and detect security risks. Nmap is commonly used by system administrators and security professionals to audit a network's security and identify possible vulnerabilities. Nmap can be used to discover active hosts, scan ports, fingerprint operating systems, detect running services, and more. Reference: CompTIA Network+ Study Manual, 8th Edition, page 592.

• Question 282:

  A technician is troubleshooting a wireless connectivity issue in a small office located in a high-rise building. Several APs are mounted in this office. The users report that the network connections frequently disconnect and reconnect throughout the day. Which of the following is the MOST likely cause of this issue?

  A. The AP association time is set too low
  B. EIRP needs to be boosted
  C. Channel overlap is occurring
  D. The RSSI is misreported
  C. Channel overlap is occurring

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  Explanation/Reference:

  Channel overlap can lead to interference and disrupt wireless connectivity. In a high-rise building with multiple access points (APs), it's common for neighboring APs to use overlapping channels. When this happens, it can result in co-channel interference, where the APs and client devices may interfere with each other's signals, causing disconnects and reconnects.

• Question 283:

  A network technician is configuring a wireless network that consists of multiple APs for better coverage and allows roaming between the APs. Which of the following types of SSIDs should the technician configure?

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

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  Explanation/Reference:

  An Extended Service Set (ESS) is a set of interconnected Basic Service Sets (BSS) within a network. It is a network configuration that allows mobile devices to roam seamlessly between different Access Points (APs) within the same network, providing continuous connectivity as the devices move.

• Question 284:

  Which of the following service models would MOST likely be used to replace on-premises servers with a cloud solution?

  A. PaaS
  B. IaaS
  C. SaaS
  D. Disaster recovery as a Service (DRaaS)
  B. IaaS

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  Explanation/Reference:

  The most likely service model to replace on-premises servers with a cloud solution is Infrastructure as a Service (IaaS). IaaS provides computing resources, such as virtual servers, storage, and networking, over the internet. This allows organizations to move their server infrastructure to the cloud, eliminating the need for on-premises servers and hardware.

• Question 285:

  A new application is being deployed. The application team has asked the network team to monitor network performance and create alerts if fluctuations in the round-trip time for that traffic occur. Which of the following should the network team monitor to meet this requirement?

  A. Bandwidth
  B. Latency
  C. Loss
  D. Jitter
  D. Jitter

• Question 286:

  Which of the following devices would be used to manage a corporate WLAN?

  A. A wireless NAS
  B. A wireless bridge
  C. A wireless router
  D. A wireless controller
  D. A wireless controller

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  Explanation/Reference:

  A Wireless LAN (WLAN) controller is a device used to manage a corporate WLAN. The WLAN controller is responsible for centralizing the management of wireless access points (APs), providing a centralized management interface, and automating common WLAN tasks such as security, quality of service (QoS), and radio frequency (RF) management.

• Question 287:

  A technician manages a DHCP scope but needs to allocate a portion of the scope's subnet for statically assigned devices. Which of the following DHCP concepts would be BEST to use to prevent IP address conflicts?

  A. Dynamic assignment
  B. Exclusion range
  C. Address reservation
  D. IP helper
  B. Exclusion range

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  Explanation/Reference:

  To prevent IP address conflicts when allocating a portion of a DHCP scope's subnet for statically assigned devices, it is recommended to use the concept of DHCP exclusion ranges. DHCP exclusion ranges allow a DHCP administrator to specify a range of IP addresses within the scope that should not be assigned to DHCP clients. This can be useful in situations where some devices on the network need to be assigned static IP addresses, as it ensures that the statically assigned addresses do not overlap with addresses assigned by the DHCP server. To set up a DHCP exclusion range, the administrator needs to specify the start and end IP addresses of the range, as well as the subnet mask. The DHCP server will then exclude the specified range of addresses from its pool of available addresses, and will not assign them to DHCP clients. By using DHCP exclusion ranges, the technician can ensure that the statically assigned addresses do not conflict with addresses assigned by the DHCP server, and can prevent IP address conflicts on the network.

  Anthony Sequeira "Another frequent configuration you might make in a DHCP implementation is to configure an exclusion range. This is a portion of the address pool that you never want leased out to clients in the network. Perhaps you have numbered your servers 192.168.1.1?92.168.1.10. Because the servers are statically configured with these addresses, you exclude these addresses from the 192.168.1.0/24 pool of addresses."

  Mike Meyers "Exclusion ranges represent an IP address or range of IP addresses from the pool of addresses that are not to be given out by the DHCP server. Exclusions should be made for the static addresses manually configured on servers and router interfaces, so these IP addresses won't be offered to DHCP clients."

• Question 288:

  An engineer recently decided to upgrade the firmware on a router. During the upgrade, the help desk received calls about a network outage, and a critical ticket was opened. The network manager would like to create a policy to prevent this from happening in the future. Which of the following documents should the manager create?

  A. Change management
  B. incident response
  C. Standard operating procedure
  D. System life cycle
  A. Change management

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  Explanation/Reference:

  The network manager would like to prevent a similar network outage from occurring in the future, which indicates a need for preventive measures. The incident has already occurred, so an incident response plan may not be sufficient on its own to prevent future incidents. A system life cycle document outlines the various stages of a system's development, and while it may include a section on upgrades, it may not provide specific guidance on how to prevent network outages during upgrades.

  Change management. Change management policies outline procedures for making changes to IT infrastructure, such as upgrades, to minimize disruptions and ensure that changes are implemented in a controlled and consistent manner. By creating a change management policy, the network manager can establish procedures for upgrading firmware and other changes, which can help prevent network outages and minimize their impact on users.

• Question 289:

  A network technician is investigating why a core switch is logging excessive amounts of data to the syslog server. The running configuration of the switch showed the following logging information:

  

  Which of the following changes should the technician make to BEST fix the issue?

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

• Question 290:

  A technician is assisting a user who cannot connect to a website. The technician attempts to ping the default gateway and DNS server of the workstation. According to troubleshooting methodology, this is an example of:

  A. a divide-and-conquer approach
  B. a bottom-up approach.
  C. a top-to-bottom approach
  D. Implementing a solution
  B. a bottom-up approach.

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  Explanation/Reference:

  The technician is just starting to look at the problem, so he is beginning to gather information to determine what the root CAUSE is. This would be step #1 Identify the Problem. "gathering information" (in this case, can certain devices be pinged on the network) is a part of step one.

  https://www.comptia.org/blog/troubleshooting-methodology