CompTIA N10-009 Online Practice Questions and Exam Preparation

CompTIA N10-009 Online Questions & Answers

• Question 521:

  A network administrator has been monitoring the company's servers to ensure that they are available.

  Which of the following should the administrator use for this task?

  A. Packet capture
  B. Data usage reports
  C. SNMP traps
  D. Configuration monitoring
  C. SNMP traps

  ---

  Explanation

  To monitor server availability SNMP traps, are the best choice. SNMP (Simple Network Management Protocol) allows devices to send alerts (traps) when certain conditions are met, such as server downtime or high resource usage.

  Breakdown of Options:

  Option

  A. Packet capture-Capturing packets provides insights into network traffic but doesnot actively monitor server availability. Option

  B. Data usage reports-These analyze network traffic consumption but do not indicate whether a server is available or not.

  Option C. SNMP traps-Correct answer. SNMP traps notify administrators of server issues in real time.

  Option D. Configuration monitoring-This tracks configuration changes rather than availability.

• Question 522:

  Which of the following protocols is used to transfer files securely over a network?

  A. FTP
  B. TFTP
  C. SFTP
  D. SNMP
  C. SFTP

  ---

  Explanation

  Secure File Transfer Protocol (SFTP) provides encrypted file transfer over a network using SSH. It ensures confidentiality and integrity of data during transmission. FTP and TFTP do not provide encryption and are considered insecure for sensitive data. SNMP is used for network management. SFTP is commonly used in environments where secure file exchange is required.

• Question 523:

  A company's VoIP phone connection is cutting in and out. A senior network engineer is recommending the implementation of a voice VLAN.

  Which of the following should be configured?

  A. 802.1Q tagging
  B. Jumbo frames
  C. Native VLAN
  D. Link aggregation
  A. 802.1Q tagging

  ---

  Explanation

  Voice VLANs rely on 802.1Q tagging to separate voice traffic from data traffic on the same physical link. This separation allows QoS policies to prioritize VoIP, reducing jitter and packet loss.

  Option B: Jumbo frames improve throughput for large data transfers, not voice.

  Option C: Native VLAN is the untagged VLAN, not specifically for voice.

  Option D: Link aggregation bundles links for bandwidth/redundancy, not QoS.

  References:

  Domain: Network Infrastructure -- VLANs, voice VLANs, 802.1Q tagging, QoS.

• Question 524:

  A company wants centralized authentication and authorization for network devices.

  Which protocol should be used?

  A. SNMPv3
  B. SSH
  C. TACACS+
  D. Syslog
  C. TACACS+

• Question 525:

  Which of the following types of routes takes precedence when building a routing table for a given subnet?

  A. Static
  B. BGP
  C. OSPF
  D. Default
  A. Static

  ---

  Explanation

  The correct answer is Static because static routes have a lower administrative distance (AD) than most dynamic routing protocols, giving them higher priority when a router selects routes for the same destination network. According to CompTIA Network+ (N10-009) routing objectives, administrative distance is used to determine the trustworthiness of a route source when multiple routing protocols provide a path to the same subnet. The lower the administrative distance, the more preferred the route.

  By default, a static route has an administrative distance of 1, which is lower than OSPF (110) and BGP (20 for eBGP, 200 for iBGP). Because of this, when identical routes to a subnet exist from both static and dynamic sources, the router installs the static route in the routing table.

  A default route (0.0.0.0/0) is only used when no more specific route exists and does not take precedence over specific static or dynamic routes. Therefore, when building the routing table for a given subnet and comparing route sources, static routes take precedence due to their lower administrative distance.

• Question 526:

  Which of the following steps of the troubleshooting methodology comes after testing the theory to determine cause?

  A. Verify full system functionality.
  B. Document the findings and outcomes.
  C. Establish a plan of action.
  D. Identify the problem.
  C. Establish a plan of action.

  ---

  Explanation

  The CompTIA Troubleshooting Methodology states that after testing the theory, the next step is to establish a plan of action resolve the issue to.

  Troubleshooting Steps:

  Identify the problem.

  Establish a theory of probable cause.

  Test the theory to determine the cause.

  Establish a plan of action and implement the solution.#(Correct step)

  Verify full system functionality.

  Document findings, actions, and outcomes.

  Breakdown of Options:

  Option A. Verify full system functionality - Happens after implementing the solution.

  Option B. Document the findings and outcomes - Final step, happens after resolving the issue.

  Option C. Establish a plan of action - Correct answer. Comes immediately after confirming the cause.

  Option D. Identify the problem - First step, already completed.

• Question 527:

  SIMULATION

  You have been tasked with setting up a wireless network in an office. The network will consist of 3 Access Points and a single switch. The network must meet the following parameters:

  1. The SSIDs need to be configured as CorpNet with a key of S3cr3t!

  2. The wireless signals should not interfere with each other

  3. The subnet the Access Points and switch are on should only support 30 devices maximum

  4. The Access Points should be configured to only support TKIP clients at a maximum speed

  INSTRUCTONS

  Click on the wireless devices and review their information and adjust the settings of the access points to meet the given requirements. If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.

  

  

  

  A. See the solution below in Explanation.
  B. PlaceHolder
  C. PlaceHolder
  D. PlaceHolder
  A. See the solution below in Explanation.

  ---

  Explanation

  AP1

  IP address: 192.168.1.32/27

  Gateway: 192.168.1.1

  SSID: CorpNet

  SSID Brodcast: Yes

  Mode: B

  Channel: 3

  Speed: 100

  Duplex: Full

  Security Settings: WPA2-Enterprise

  Key or Passphrase: S3cr3t!

  AP2

  IP address: 192.168.1.64/27

  Gateway: 192.168.1.1

  SSID: CorpNet

  SSID Brodcast: Yes

  Mode: B

  Channel: 6

  Speed: 100

  Duplex: Full

  Security Settings: WPA2-Enterprise

  Key or Passphrase: S3cr3t!

  AP3

  IP address: 192.168.1.96/27

  Gateway: 192.168.1.1

  SSID: CorpNet

  SSID Brodcast: Yes

  Mode: B

  Channel: 9

  Speed: 100

  Duplex: Full

  Security Settings: WPA2-Enterprise

  Key or Passphrase: S3cr3t!

• Question 528:

  A network administrator installs new cabling to connect new computers and access points. After deploying the equipment, the administrator notices a few of the devices are not connecting properly. The administrator moves the devices to a different port, but it does not resolve the issue.

  Which of the following should the administrator verify next?

  A. Power budget
  B. Device requirements
  C. Port status
  D. Cable termination
  D. Cable termination

  ---

  Explanation

  1. Cable termination issues (e.g., improper crimping, loose connectors) can cause connectivity failures.

  2. Power budget (A) applies to PoE devices, not general cabling issues.

  3. Device requirements (B) relate to software/hardware compatibility, not wiring faults.

  4. Port status (C) would help if the issue was switch-related, but since moving devices didn't help, it's likely a cabling issue.

  References:

  CompTIA Network+ N10-009 Official Documentation -Cabling&

  Physical Layer Troubleshooting.

• Question 529:

  Which of the following explains what happens if a packet is lost in transit when using UDP?

  A. The data link layer will recognize the error and resend the packet.
  B. IP uses the TTL field to track packet hops and will resend the packet if necessary.
  C. If the sender does not receive a UDP acknowledgement, the packet will be resent.
  D. Some applications will recognize the loss and initiate a resend of the packet if necessary.
  D. Some applications will recognize the loss and initiate a resend of the packet if necessary.

• Question 530:

  Which of the following is most closely associated with a dedicated link to a cloud environment and may not include encryption?

  A. Direct Connect
  B. Internet gateway
  C. Captive portal
  D. VPN
  A. Direct Connect

  ---

  Explanation

  Direct Connect refers to a dedicated network connection between an on-premises network and a cloud service provider (such as AWS Direct Connect). This link bypasses the public internet, providing a more reliable and higher-bandwidth connection. It may not inherently include encryption because it relies on the security measures of the dedicated physical connection itself. In contrast, other options like VPN typically involve encryption as they traverse the public internet.

  References:

  CompTIA Network+ full course material indicates that Direct Connect type services offer dedicated, private connections which might not include encryption due to the dedicated and secure nature of the link itself.