CompTIA N10-008 Online Practice Questions and Exam Preparation

CompTIA N10-008 Online Questions & Answers

• Question 291:

  A network technician needs to install network devices in a new building. The building will be a pan of the corporate network and has the connection to the core network already. Which of the following devices must be configured in the new building?

  A. Firewall
  B. Switch
  C. Modem
  D. IDS
  B. Switch

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  Explanation/Reference:

• Question 292:

  A company has been added to an unapproved list because of spam. The network administrator confirmed that a workstation was infected by malware. Which of the following processes did the administrator use to identify the root cause?

  A. Traffic analysis
  B. Availability monitoring
  C. Baseline metrics
  D. Network discovery
  A. Traffic analysis

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  Explanation/Reference:

  One possible process that the administrator used to identify the root cause of the spam issue is traffic analysis. Traffic analysis is a technique that monitors and analyzes the network traffic that flows between devices or applications. Traffic

  analysis can help troubleshoot network problems by identifying the source, destination, volume, frequency, and content of the network packets12.

  To use traffic analysis to identify the root cause of the spam issue, the administrator could follow these steps:

  Install a traffic analysis tool on the server or a device that is connected to the same network as the server, such as Wireshark3, tcpdump4, or Microsoft Network Monitor5. Start capturing the network traffic and filter it by using the IP address or

  hostname of the server, or by using a specific port or protocol that is used by the email service, such as SMTP (port 25), POP3 (port 110), or IMAP (port 143). Analyze the filtered traffic and look for any signs of abnormal or malicious activity,

  such as high volume of outgoing emails, unknown recipients, suspicious attachments, or spam keywords.

  Trace back the source of the spam emails to the infected workstation by using its IP address or MAC address.

  Isolate and clean up the infected workstation by using an antivirus or malware removal tool.

  The other options are not processes that the administrator used to identify the root cause of the spam issue. Availability monitoring is a technique that measures and reports the uptime and downtime of a network device or service. Availability

  monitoring can help troubleshoot network problems by detecting any failures or outages that affect the network performance. Baseline metrics are a set of standard measurements that establish the normal behavior or performance of a

  network device or service. Baseline metrics can help troubleshoot network problems by comparing the current state of the network with the expected state and identifying any deviations or anomalies. Network discovery is a technique that

  scans and maps the network devices and services that are connected to a network. Network discovery can help troubleshoot network problems by providing a comprehensive and updated view of the network topology and configuration.

• Question 293:

  A network technician is troubleshooting an application issue. The technician is able to recreate the issue in a virtual environment. According to the troubleshooting methodology, which of the following actions will the technician most likely perform NEXT?

  A. Gather information from the initial report.
  B. Escalate the issue to a supervisor.
  C. Implement a solution to resolve the issue.
  D. Establish a theory of probable cause.
  D. Establish a theory of probable cause.

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  Explanation/Reference:

  Establish a Theory of Probable Cause I'd like to start by pointing out the impreciseness of the words in this step. Words such as theory and probable indicate a guess on your part, even if it is a guess backed by data. The way this step is written acknowledges that the root cause (step one) may not have been accurately identified. However, the cause is specific enough to begin troubleshooting.

  This stage may require significant research on your part. Vendor documentation, your organization's own documentation and a good old-fashioned Google search may all be required to provide the basis for your theory.

  Specific steps here may include:

  Questioning the obvious Considering multiple approaches, including top-to-bottom or bottom-to-top for layered technologies (such as networks) - key take way here is, the problem is an application (layer 7) hence, top to bottom approach

• Question 294:

  Two users on a LAN establish a video call. Which of the following OSI model layers ensures the initiation coordination, and termination of the call?

  A. Session
  B. Physical
  C. Transport
  D. Data link
  A. Session

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  Explanation/Reference:

  The OSI model layer that ensures the initiation, coordination, and termination of a video call is the session layer. The session layer is responsible for establishing, maintaining, and terminating communication sessions between two devices on a network.

• Question 295:

  A network engineer is creating a method for customers to access the company's application in a web browser. Which of the following cloud models should the customers use to access the application?

  A. PaaS
  B. SaaS
  C. MaaS
  D. IaaS
  B. SaaS

• Question 296:

  A network team is getting reports that air conditioning is out in an IDF. The team would like to determine whether additional network issues are occurring. Which of the following should the network team do?

  A. Confirm that memory usage on the network devices in the IDF is normal.
  B. Access network baseline data for references to an air conditioning issue.
  C. Verify severity levels on the corporate syslog server.
  D. Check for SNMP traps from a network device in the IDF.
  E. Review interface statistics looking for cyclic redundancy errors.
  D. Check for SNMP traps from a network device in the IDF.

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  Explanation/Reference:

  "Baselines play an integral part in network documentation because they let you monitor the network's overall performance. In simple terms, a baseline is a measure of performance that indicates how hard the network is working and where network resources are spent. The purpose of a baseline is to provide a basis of comparison. For example, you can compare the network's performance results taken in March to results taken in June, or from one year to the next. More commonly, you would compare the baseline information at a time when the network is having a problem to information recorded when the network was operating with greater efficiency. Such comparisons help you determine whether there has been a problem with the network, how significant that problem is, and even where the problem lies."

• Question 297:

  Which of the following is indicative of an FTP bounce?

  A. Arbitrary IP address
  B. Reverse DNS lookups
  C. Same Port Number
  D. File Transfer Success
  A. Arbitrary IP address

• Question 298:

  A company, which is located in a coastal town, retrofitted an office building for a new data center. The underground fiber optics were brought in and connected to the switches in the basement network MDF. A server data center was built on the fifth floor with the two rooms vertically connected by fiber optics. Which of the following types of environmental sensors is most needed?

  A. Temperature sensor in the network MOF
  B. Water sensor in the network MDF
  C. Temperature sensor in the data center
  D. Water sensor in the data center
  B. Water sensor in the network MDF

• Question 299:

  Which of the following technologies relies on circuit switching?

  A. DMVPN
  B. MPLS
  C. PPPoE
  D. DOCSIS
  C. PPPoE

• Question 300:

  A network administrator requires redundant routers on the network, but only one default gateway is configurable on a workstation. Which of the following will allow for redundant routers with a single IP address?

  A. EIGRP
  B. VRRP
  C. MPLS
  D. STP
  B. VRRP

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  Explanation/Reference:

  Virtual Router Redundancy Protocol (VRRP) is a protocol that allows for redundant routers on the network with a single IP address. VRRP works by creating a virtual router that consists of one master router and one or more backup routers.

  The virtual router has its own IP address and MAC address that are shared among the routers in the group. The master router responds to traffic sent to the virtual router's IP address, while the backup routers monitor the master router's

  status. If the master router fails, one of the backup routers takes over as the new master router and continues to respond to traffic. This way, VRRP provides high availability and fault tolerance for the network.

  References: https://www.comptia.org/training/books/network-n10-008-study-guide (page 230)