CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 101:

  Which of the following allows a standard user to log in to multiple resources with one account?

  A. RADIUS
  B. MFA
  C. TACACS+
  D. SSO
  D. SSO

• Question 102:

  Which of the following steps of the troubleshooting methodology would most likely involve comparing current throughput tests to a baseline?

  A. Implement the solution
  B. Verify full system functionality
  C. Document findings
  D. Test the theory
  B. Verify full system functionality

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  Explanation

  Verifying full system functionality occurs after implementing a fix. This step ensures the solution resolved the issue and that performance is back to expected levels. Comparing current throughput to baseline measurements is part of validation testing to confirm everything is within normal operational parameters.

  Option A: Implement the solution applies the fix but does not confirm results.

  Option C: Document findings happens at the end of troubleshooting.

  Option D: Test the theory comes earlier, when trying to confirm the suspected cause.

  References:

  Domain: Network Troubleshooting -- Troubleshooting methodology steps, baselines, verification testing.

• Question 103:

  Which of the following is the most closely associated with segmenting compute resources within a single cloud account?

  A. Network security group
  B. laaS
  C. VPC
  D. Hybrid cloud
  C. VPC

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  Explanation

  References:

  CompTIA Network+ Certification Exam Objectives - Cloud Models section.

• Question 104:

  A network security administrator needs to monitor the contents of data sent between a secure network and the rest of the company.

  Which of the following monitoring methods will accomplish this task?

  A. Port mirroring
  B. Flow data
  C. Syslog entries
  D. SNMP traps
  A. Port mirroring

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  Explanation

  Port mirroring is a method of monitoring network traffic by copying the data packets from one port to another port on the same switch or router. This allows the network security administrator to analyze the contents of the data sent between different networks without affecting the performance or security of the original traffic. Port mirroring can be configured to capture all traffic or only specific types of traffic, such as VLANs, protocols, or IP addresses.

• Question 105:

  A company recently implemented a videoconferencing system that utilizes large amounts of bandwidth. Users start reporting slow internet speeds and an overall decrease in network performance.

  Which of the following are most likely the causes of the network performance issues? (Select two)

  A. DNS misconfiguration
  B. Inadequate network security
  C. Malware or a virus
  D. Outdated software
  E. Incorrect QoS settings
  F. Network congestion
  E. Incorrect QoS settings
  F. Network congestion

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  Explanation

  High-bandwidth applications such as videoconferencing require sufficient bandwidth and proper traffic prioritization.

  Incorrect QoS settings can prevent video traffic from being prioritized, leading to degraded performance.

  Network congestion can occur when available bandwidth is insufficient, causing delays and reduced quality across services.

  DNS misconfiguration affects name resolution, not bandwidth.

  Malware may impact performance but is not specific to this scenario.

  Outdated software does not directly cause network congestion.

  Inadequate security does not typically result in bandwidth-related performance issues.

  Therefore, incorrect QoS settings and network congestion are the most likely causes.

• Question 106:

  Which of the following devices is used to centrally manage multiple wireless access points?

  A. Load balancer
  B. Wireless controller
  C. Proxy server
  D. VPN concentrator
  B. Wireless controller

• Question 107:

  An on-call network technician receives an automated email alert stating that a power supply on a firewall has just powered down.

  Which of the following protocols would BEST allow for this level of detailed device monitoring?

  A. TFTP
  B. TLS
  C. SSL
  D. SNMP
  D. SNMP

• Question 108:

  Which protocol synchronizes time across devices?

  A. SNMP
  B. DNS
  C. NTP
  D. SIP
  C. NTP

• Question 109:

  Which of the following network cables involves bounding light off of protective cladding?

  A. Twinaxial
  B. Coaxial
  C. Single-mode
  D. Multimode
  D. Multimode

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  Explanation

  Multimode fiber optic cables involve the transmission of light signals that bounce off the core's cladding as they travel down the fiber. This characteristic differentiates it from single-mode fiber, where the light travels directly down the fiber without reflecting off the cladding.

  Here are some detailed points about multimode fiber cables:

  Construction: Multimode fibers have a larger core diameter, typically 50 or 62.5 microns, compared to single-mode fibers, which have a core diameter of about 9 microns.

  Light Propagation: The larger core of multimode fiber allows multiple light modes to propagate. These modes travel at different angles, leading to reflections off the core-cladding boundary.

  Distance and Bandwidth: Due to modal dispersion, where different light modes arrive at the receiver at different times, multimode fibers are suited for shorter distance applications compared to single-mode fibers. Typical distances are up to 550 meters for 10 Gbps Ethernet using OM4 multimode fiber.

  Applications: Multimode fibers are commonly used in LANs (Local Area Networks), data centers, and for shorter distance data transmission due to their cost-effectiveness and ease of installation.

  References:

  CompTIA Network+ N10-007 Official Certification Guide, which covers fiber optic technologies, including the differences between multimode and single-mode fibers. Cisco Networking Academy: Provides training materials and reference guides on the properties of different fiber optic cables.

  Fiber Optic Association (FOA): A professional society dedicated to fiber optics, offering extensive information and certification on fiber optic technologies. Multimode fibers are specifically designed for short-range communication with higher data rates and are typically used in environments like data centers, where high bandwidth over shorter distances is crucial. The reflections off the cladding, inherent to multimode fiber, facilitate this high-capacity communication.

• Question 110:

  An administrator needs to configure an IoT device with a /21 subnet mask, but the device will only accept dotted decimal notation.

  Which of the following subnet masks should the administrator use?

  A. 255.255.224.0
  B. 255.255.240.0
  C. 255.255.248.0
  D. 255.255.252.0
  B. 255.255.240.0

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  Explanation

  A /21 subnet mask means 21 bits are network bits: 8 + 8 + 5 = 21 - leaving 11 bits for hosts.

  Subnet mask in binary:

  11111111.11111111.11111000.00000000 Converted to decimal: 255.255.248.0

  Therefore:

  Option A. /19 = 255.255.224.0

  Option B. /20 = 255.255.240.0

  Option C. /21 = 255.255.248.0 Correct

  Option D. /22 = 255.255.252.0 Answer correction: The correct option is

  C. 255.255.248.0, not

  B.

  References:

  Domain: Networking Concepts - Subnetting, CIDR notation, dotted decimal masks.