CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 111:

  A branch office is experiencing frequent power-related issues that are taking the network down dally.

  Which of the following would best address this network uptime issue?

  A. MPLS
  B. IPS
  C. PDU
  D. UPS
  E. HA firewalls
  D. UPS

• Question 112:

  Which of the following is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities?

  A. Site-to-site VPN
  B. SSH tunnel
  C. API gateway
  D. Dedicated line
  A. Site-to-site VPN

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  Explanation

  A site-to-site VPN (Virtual Private Network) is the most cost-effective way for a network administrator to establish a persistent, secure connection between two facilities. It allows secure communication over the internet by encrypting the data transmitted between the two locations. Site-to-site VPNs are a practical and economical solution for connecting geographically dispersed sites over the public internet while maintaining a high level of security.

• Question 113:

  A network administrator needs to deploy a subnet using an IP address range that can support at least 260 devices with the fewest wasted addresses.

  Which of the following subnets should the administrator use?

  A. 172.16.0.0/24
  B. 172.25.2.0/23
  C. 172.30.1.0/22
  D. 172.33.0.0/21
  B. 172.25.2.0/23

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  Explanation

  To support at least 260 hosts, you need at least 512 total IP addresses (accounting for network/broadcast overhead).

  /23 (255.255.254.0)gives 510 usable IPs, ideal for 260 devices with minimal waste.

  /24 (255.255.255.0)gives only 254 usable -- not enough.

  /22 (1022 usable)and /21 (2046 usable) would work but result in significant address waste.

  References:

  CompTIA Network+ N10-009 Official Objectives: 2.1?Given a scenario, configure and apply IP addressing schemes.

• Question 114:

  Which of the following steps of the troubleshooting methodology would most likely include checking through each level of the OSI model after the problem has been identified?

  A. Establish a theory.
  B. Implement the solution.
  C. Create a plan of action.
  D. Verify functionality.
  A. Establish a theory.

• Question 115:

  Two companies want to build an encrypted tunnel between them and use a PSK for initial authentication.

  Which of the following is the BEST protocol?

  A. VPN
  B. SSL
  C. TLS
  D. IPSec
  D. IPSec

• Question 116:

  A technician needs to quickly set up a network with five wireless devices.

  Which of the following network types should the technician configure to accomplish this task?

  A. Ad hoc
  B. Spine and leaf
  C. Point to point
  D. Mesh
  A. Ad hoc

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  Explanation

  The correct answer is Ad hoc because it allows wireless devices to communicate directly with one another without requiring a centralized access point or additional infrastructure. According to CompTIA Network+ (N10-009) objectives under wireless networking concepts, an ad hoc network (also known as an Independent Basic Service Set, or IBSS) enables peer-to-peer wireless communication. This type of network is ideal for temporary or quick setups where only a small number of devices need to connect. In an ad hoc configuration, each device connects directly to others, making it simple and fast to deploy without requiring switches, routers, or wireless access points.

  Spine and leaf (Option B) is a data center architecture designed for high scalability and redundancy, not small wireless setups.

  Point-to-point (Option C) refers to a direct connection between two devices only, which would not support five devices efficiently.

  Mesh (Option D) allows multiple nodes to interconnect and provide redundancy, but it is more complex and typically requires compatible infrastructure devices.

  Therefore, for a quick setup with five wireless devices, an ad hoc network is the most appropriate choice.

• Question 117:

  A network technician receives a new ticket while working on another issue. The new ticket is critical to business operations.

  Which of the following documents should the technician reference to determine which ticket to complete first?

  A. NDA
  B. AUP
  C. SLA
  D. MOU
  C. SLA

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  Explanation

  An SLA (Service Level Agreement) defines performance expectations, including response time, prioritization, and resolution time for services and support issues. It helps the technician determine which task has higher priority based on business impact.

  Option A. NDA (Non-Disclosure Agreement)relates to confidentiality, not task prioritization.

  Option B. AUP (Acceptable Use Policy)defines user behavior, not issue handling.

  Option D. MOU (Memorandum of Understanding)outlines informal agreements and doesn't define ticket priorities.

  References:

  CompTIA Network+ N10-009 Official Objectives: 4.1-Compare and contrast common documentation types.

• Question 118:

  A technician needs to set up a wireless connection that utilizes MIMO on non-overlapping channels.

  Which of the following would be the best choice?

  A. 802.11a
  B. 802.11b
  C. 802.11g
  D. 802.11n
  D. 802.11n

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  Explanation

  The 802.11n standard supports MIMO (Multiple Input Multiple Output), which allows multiple antennas to increase data throughput and improve reliability. Additionally, it uses non-overlapping channels in the 5 GHz band (and optionally the 2.4 GHz band), making it a good choice for high-speed, interference-resistant wireless connections. (Reference: CompTIA Network+ Study Guide, Chapter on Wireless Technologies)

• Question 119:

  A company's Chief Information Security Officer requires that servers and firewalls have accurate timestamps when creating log files so that security analysts can correlate events during incident investigations.

  Which of the following should be implemented?

  A. Syslog server
  B. SMTP
  C. SNMP
  D. NTP
  D. NTP

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  Explanation

  NTP (Network Time Protocol) synchronizes clocks across network devices, ensuring accurate timestamps in logs. This is critical for correlating events across different systems during investigations.

  Option A: Syslog collects logs but relies on accurate timestamps already present.

  Option B: SMTP is an email protocol, unrelated to time synchronization.

  Option C: SNMP is for monitoring and management, not time.

  References:

  Domain: Network Operations -- Time synchronization (NTP), log correlation, security operations.

• Question 120:

  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.
  D. An incorrect cable type was installed.

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  Explanation

  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).

  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 Exam Guide: Offers comprehensive details on troubleshooting network connectivity issues, including cabling problems.