CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 471:

  A network engineer needs to virtualize network services, including a router at a remote branch location.

  Which of the following solutions meets the requirements?

  A. NFV
  B. VRF
  C. VLAN
  D. VPC
  A. NFV

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  Explanation

  Network Functions Virtualization (NFV): NFV is a technology that virtualizes network services like routing, firewalls, and load balancers. It allows these services to run on virtual machines rather than requiring dedicated hardware. This is ideal for remote branch locations where deploying physical devices is costly and complex.

  VRF (B): Virtual Routing and Forwarding is used for segmenting routing tables but does not virtualize services.

  VLAN (C): Virtual Local Area Networks help segregate broadcast domains but are unrelated to virtualizing network functions.

  VPC (D): Virtual Private Cloud is used for cloud computing but does not pertain to virtualizing network services.

• Question 472:

  A company reports that their facsimile machine no longer has a dial tone when trying to send a fax. The phone cable is damaged on one end.

  Which of the following types of connectors should a technician replace?

  A. F-type
  B. RJ45
  C. SC
  D. RJ11
  D. RJ11

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  Explanation

  Fax machines use analog phone lines, which are connected using RJ11 connectors. These are standard telephone connectors with 4 or 6 positions and are used for POTS (Plain Old Telephone Service) lines.

  F-typeis used for coaxial cables (e.g., TV and cable modems).

  RJ45is used for Ethernet network connections.

  SC (Subscriber Connector)is used for fiber optic connections, not analog telephone lines.

  References:

  CompTIA Network+ N10-009 Official Objectives: 2.4?Compare and contrast common network connectors.

• Question 473:

  A network technician is adding a new switch to increase capacity on the network. The technician connects the two switches using a single cable. Several hosts are moved to the new switch, but none of the hosts can access the network or internet.

  Which of the following should the technician do to resolve the issue?

  A. Configure the connecting ports as trunk ports
  B. Install STP cables between the switches
  C. Increase the PoE budget for the switches
  D. Set up link aggregation on the uplink ports
  A. Configure the connecting ports as trunk ports

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  Explanation

  The correct solution is to configure the connecting ports as trunk ports. When connecting switches, the uplink ports must be configured to carry traffic for multiple VLANs (trunking), not just a single access VLAN. Without trunking, VLAN tags may be dropped, and traffic from hosts will not reach the rest of the network or internet.

  Option B. STP cables is a misnomer - STP refers to Spanning Tree Protocol or Shielded Twisted Pair cables, neither of which solves this logical configuration issue.

  Option C. PoE budget is irrelevant because switches and hosts in this context don't require PoE.

  Option D. Link aggregation (LACP, EtherChannel) is for increasing bandwidth/redundancy across multiple links, not required with a single cable. By enabling trunking on the uplink ports, the switches can pass VLAN-tagged traffic, ensuring hosts connected to the new switch have access to the same resources as those on the existing switch.

  References (CompTIA Network+ N10-009):

  Domain: Network Troubleshooting - VLAN trunking, inter-switch connectivity.

• Question 474:

  Which of the following steps of the troubleshooting methodology should a technician take to confirm a theory?

  A. Duplicate the problem.
  B. Identify the symptoms.
  C. Gather information.
  D. Determine any changes.
  A. Duplicate the problem.

• Question 475:

  Which of the following types of network architecture typically uses leased lines to provide dedicated, private connections between multiple satellite offices and a head office?

  A. Mesh
  B. Point to point
  C. Hub and spoke
  D. Star
  C. Hub and spoke

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  Explanation

  The correct answer is hub-and-spoke. In this design, the head office serves as the hub, and all satellite or branch offices (the spokes) connect directly to the hub using leased lines or VPNs. Communication between spokes typically passes through the hub, which centralizes connectivity and simplifies management.

  Option A: Mesh involves every site connecting to every other site, which is more redundant but costly.

  Option B: Point-to-point describes a single dedicated link between two sites, not a multi-site topology.

  Option D: Star is often used in LAN switching, with all devices connecting to a central switch, but it's not the WAN architecture typically used here.

  Hub-and-spoke is a cost-effective WAN design, as fewer circuits are needed compared to full mesh. However, its main disadvantage is reliance on the hub site: if the hub goes down, inter-spoke communication fails.

  References:

  Domain: Networking Concepts -- WAN topologies (hub-and-spoke, mesh, point-to-point).

• Question 476:

  A network engineer is testing a website to ensure it is compatible with IPv6. After attempting to ping the website by its IPv6 address, the engineer determines that the DNS has not been set up properly.

  Which of the following should the network engineer complete to resolve this issue?

  A. Enable a PTR record.
  B. Update the existing TXT record.
  C. Add a new AAAA record.
  D. Configure a secondary NS record.
  C. Add a new AAAA record.

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  Explanation

  AAAA records map domain names to IPv6 addresses, enabling proper resolution.

  PTR records (A) are for reverse DNS lookups.

  TXT records (B) store text-based information, not IP addresses.

  NS records (D) define authoritative name servers but don't directly affect IPv6 resolution.

  References:

  CompTIA Network+ N10-009 Official Documentation DNS Configuration&

  IPv6.

• Question 477:

  Which of the following protocols can be used to change device configurations via encrypted and authenticated sessions? (Select TWO)

  A. SNMPv3
  B. SSH
  C. Telnet
  D. IPSec
  E. ESP
  F. Syslog
  A. SNMPv3
  B. SSH

• Question 478:

  A network administrator is troubleshooting a PC that cannot connect to the LAN. The administrator runs the ipconfig command at the command prompt and gets the following output:

  

  Which of the following is misconfigured?

  A. Subnet mask
  B. Physical address
  C. DNS server
  D. DHCP server
  A. Subnet mask

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  Explanation

  The subnet mask should be in the standard format, such as 255.255.255.0, which is a typical subnet mask for a Class C network. The value provided (225.225.225.224) is not a valid subnet mask and should be corrected to match the appropriate subnet for the network, often 255.255.255.0 for a typical home or small office network.

• Question 479:

  Which of the following best explains the role of confidentiality with regard to data at rest?

  A. Datacanbe accessedby anyone on the administrative network.
  B. Datacanbe accessedremotely with proper training.
  C. Datacanbe accessedafter privileged access Is granted.
  D. Datacanbe accessedafter verifying the hash.
  C. Datacanbe accessedafter privileged access Is granted.

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  Explanation

  Confidentiality with Data at Rest: Confidentiality is a core principle of data security, ensuring that data stored (at rest) is only accessible to authorized individuals. This protection is achieved through mechanisms such as encryption, access controls, and permissions.

• Question 480:

  A network technician is installing a new switch that does not support STP at the access layer of a network. The technician wants a redundant connection to the distribution switch.

  Which of the following should the technician use?

  A. Link aggregation
  B. Subinterfaces
  C. Switch virtual interfaces
  D. Half-duplex connections
  A. Link aggregation