CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 511:

  A company is implementing a new internal network in which all devices use IPv6 addresses.

  Which of the following routing protocols will be best for this setup?

  A. EIGRP
  B. OSPFv3
  C. BGP4
  D. iBGP
  B. OSPFv3

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  Explanation

  For an internal network using IPv6, the best option listed is OSPFv3, which is the OSPF version designed to support IPv6 routing. In Network+ (N10-009) routing objectives, OSPF is a common interior gateway protocol (IGP) used within an organization (an autonomous system) to exchange routes dynamically and converge efficiently. OSPFv3 maintains the link-state approach of OSPF while adding IPv6 support, making it a strong fit for enterprise internal routing where multiple routers and subnets need dynamic path calculation and fast convergence.

  BGP4 and iBGP are associated with BGP, primarily used for inter-domain routing on the internet and between large networks; while BGP can carry IPv6 (via MP-BGP), it is generally not the "best" default choice for a typical internal-only enterprise network unless there is a specific design reason. EIGRP can support IPv6 in some implementations, but Network+ typically emphasizes OSPF/OSPFv3 as the widely adopted, vendor-neutral IGP for IPv6 deployments. Given the options and the "best for this setup" wording, OSPFv3 is the most appropriate answer.

• Question 512:

  Which of the following types of connectors allows the transmission of network data through a coaxial cable?

  A. SC
  B. MPO
  C. BNC
  D. RJ11
  C. BNC

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  Explanation

  The right answer is C. BNC. A BNC connector is associated with coaxial cabling, which has been used for certain networking, video, and radio frequency applications. In networking history, coax with BNC connectors was common in older Ethernet implementations such as 10BASE2.

  The other choices point to different media types. SC is a fiber optic connector. MPO is also a fiber connector, usually for high-density fiber connections. RJ11 is commonly used for telephone wiring rather than coaxial network cabling. Since the question specifically asks about transmission through a coaxial cable, BNC is the only match.

  This is one of those basic media and connector recognition questions that CompTIA likes to include. The goal is to connect the connector type to the cabling standard it belongs with. When you see coax, the classic connector to remember is BNC. When you see fiber, think of connectors such as SC, LC, ST, or MPO. When you see telephone pairs, RJ11 is the common answer.

  So the clean way to solve this one is by matching cable type to connector type. Coaxial cable goes with BNC.

• Question 513:

  A network engineer needs to change, update, and control APs remotely, with real-time visibility over HTTPS.

  Which of the following will best allow these actions?

  A. Web interface
  B. Command line
  C. SNMP console
  D. API gateway
  D. API gateway

• Question 514:

  Which of the following is the best way to keep devices on during a loss of power?

  A. UPS
  B. Power load
  C. PDU
  D. Voltage
  A. UPS

• Question 515:

  Network administrators are using the Telnet protocol to administer network devices that are on the 192.168.1.0 /24 subnet.

  Which of the following tools should the administrator use to best identify the devices?

  A. dig
  B. runap
  C. tracert
  D. telnet
  D. telnet

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  Explanation

  Telnet: Telnet is a protocol used to establish remote connections to devices for administration. It directly communicates with devices on the network and is the best tool for identifying and accessing devices that support it on the subnet.

  dig (A): Used for DNS queries, unrelated to Telnet. runap (B): Not a recognized tool in this context.

  tracert (C): Tracks the path to a host but does not establish direct connections.

• Question 516:

  A network administrator is configuring a network for a new site that will have 150 users. Within the next year, the site is expected to grow by ten users. Each user will have two IP addresses (one for a computer and one for a phone).

  Which of the following classful IPv4 address ranges will be best-suited for the network?

  A. Class D
  B. Class B
  C. Class A
  D. Class C
  B. Class B

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  Explanation

  The total number of devices = (150 + 10) users x 2 IPs per user = 320 devices

  Class C (D) supports a maximum of 254 hosts (2^8 - 2), which is too small.

  Class B (B) supports 65,534 hosts (2^16 - 2), making it the best choice.

  Why not the other options?

  Class A (C): Supports millions of addresses, which is overkill for 320 devices.

  Class D (A): Used for multicast, not for device addressing.

• Question 517:

  A network engineer configures a new switch and connects it to an existing switch for expansion and redundancy. Users immediately lose connectivity to the network. The network engineer notes the following spanning tree information from both switches:

  Switch 1

  Port State Cost

  1 Forward 2

  2 Forward 2

  Switch 2

  Port State Cost

  1 Forward 2

  2 Forward 2

  Which of the following best describes the issue?

  A. The port cost should not be equal.
  B. The ports should use link aggregation.
  C. A root bridge needs to be identified.
  D. The switch should be configured for RSTP.
  C. A root bridge needs to be identified.

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  Explanation

  The issue is that no root bridge has been identified. In STP, a root bridge is necessary to manage redundant paths and avoid loops in the network. Without a root bridge, all switches will assume they can forward traffic, causing a network loop and connectivity problems.

• Question 518:

  A network technician is examining the configuration on an access port and notices more than one VLAN has been set.

  Which of the following best describes how the port is configured?

  A. With a voice VLAN
  B. With too many VLANs
  C. With a default VLAN
  D. With a native VLAN
  A. With a voice VLAN

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  Explanation

  It is common for an access port to have both a voice VLAN and a data VLAN. A voice VLAN separates voice traffic from regular data traffic, ensuring better quality and security for voice communications.

• Question 519:

  A network administrator receives a call about a network printer that is not working for a workstation. The network administrator verifies the printer is turned on. Given the following information:

  Router's gateway IP: 10.0.0.1/25

  Device: Printer

  

  Device: Workstation

  

  Which of the following should the administrator change to remediate this issue? (Choose two.)

  A. The subnet on the router
  B. The IP address on the printer
  C. The subnet on the printer
  D. The IP address on the router
  E. The subnet on the workstation
  F. The IP address on the workstation
  B. The IP address on the printer
  E. The subnet on the workstation

• Question 520:

  A detective is investigating an identity theft case in which the target had an RFID-protected payment card issued and compromised in the same day. The only place the target claims to have used the card was at a local convenience store.

  The detective notices a video camera at the store is placed in such a way that customers' credentials can be seen when they pay.

  Which of the following best explains this social engineering technique?

  A. Shoulder surfing
  B. Impersonation
  C. Vishing
  D. Tailgating
  A. Shoulder surfing