CompTIA CompTIA Certifications N10-009 Questions & Answers

• Question 51:

  A technician completed troubleshooting and was able to fix an issue. Which of the following is the BEST method the technician can use to pass along the exact steps other technicians should follow in case the issue arises again?

  A. Use change management to build a database

  B. Send an email stating that the issue is resolved.

  C. Document the lessons learned

  D. Close the ticket and inform the users.

  Correct Answer: C

  Documenting the lessons learned is the best method for passing along the exact steps other technicians should follow in case the issue arises again. Lessons learned are the knowledge and experience gained from completing a project or solving a problem. Documenting the lessons learned helps to capture the best practices, challenges, solutions, and recommendations for future reference and improvement. Documenting the lessons learned can also help to update the knowledge base, standard operating procedures, or policies related to the issue. References: [CompTIA Network+ Certification Exam Objectives], Lessons Learned: Definition and Examples for Project Managers

• Question 52:

  A network administrator is configuring a new switch and wants to connect two ports to the core switch to ensure redundancy. Which of the following configurations would meet this requirement?

  A. Full duplex

  B. 802.1Q tagging

  C. Native VLAN

  D. Link aggregation

  Correct Answer: D

  Link aggregation is a technique that allows multiple physical ports to be combined into a single logical channel, which provides increased bandwidth, load balancing, and redundancy. Link aggregation can be configured using protocols such

  as Link Aggregation Control Protocol (LACP) or static methods.

  References

  Link aggregation is one of the common Ethernet switching features covered in Objective 2.3 of the CompTIA Network+ N10-008 certification exam1. Link aggregation can be used to connect two ports to the core switch to ensure

  redundancy23.

  Link aggregation can be configured using LACP or static methods23.

  1: CompTIA Network+ Certification Exam Objectives, page 5 2: Interface Configurations ?N10-008 CompTIA Network+ : 2.3 3: CompTIA Network+ N10-008 Cert Guide, Chapter 11, page 323

• Question 53:

  An IT administrator needs to connect older smart-plug devices to the network. The administrator wants to prevent future issues from occurring by using an 802.11 standard that only operates on the 2.4GHz frequency. Which of the following standards should the administrator choose?

  A. 802.11a

  B. 802.11ac

  C. 802.11ax

  D. 802.11b

  Correct Answer: D

  802.11b is a wireless networking standard that operates on the 2.4 GHz frequency band. It supports a maximum data rate of 11 Mbps and has a range of about 35 meters indoors and 140 meters outdoors. 802.11b is compatible with older smart-plug devices that use the same frequency band, but it may suffer from interference from other devices that also use the 2.4 GHz band, such as microwave ovens, Bluetooth devices, and cordless phones.

• Question 54:

  Which of the following would be used to indicate when unauthorized access to physical internal hardware has occurred?

  A. Motion detectors

  B. Radio frequency identification tags

  C. Tamper evident seal

  D. Locking racks

  Correct Answer: C

  A tamper-evident seal is used to indicate when unauthorized access to physical internal hardware has occurred. These seals are designed to break or show visible signs of tampering if someone tries to open or access a piece of equipment or hardware. This provides a visual indication that unauthorized access or tampering has taken place, alerting security personnel to investigate further.

• Question 55:

  Which of the following layers of the OSI model lies between the transport layer and the network layer?

  A. Application

  B. Data link

  C. Session

  D. Presentation

  Correct Answer: D

• Question 56:

  A network technician wants to identify which DNS servers a computer is configured to use. Which of the following commands should the technician use?

  A. nbtstat

  B. arp

  C. nslookup

  D. netstat

  Correct Answer: C

• Question 57:

  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

  Correct Answer: A

  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 58:

  An organization is interested in purchasing a backup solution that supports the organization's goals. Which of the following concepts would specify the maximum duration that a given service can be down before impacting operations?

  A. MTTR

  B. RTO

  C. MTBF

  D. RPO

  Correct Answer: B

  The maximum duration that a given service can be down before it impacts operations is often referred to as the Recovery Time Objective (RTO). RTO is a key consideration in any backup and disaster recovery plan, as it determines how quickly the organization needs to be able to recover from a disruption or failure. It is typically expressed in terms of time, and it helps to inform the design and implementation of the backup solution. For example, if an organization has a critical service that must be available 24/7, it may have a very low RTO, requiring that the service be restored within a matter of minutes or even seconds. On the other hand, if the service can be down for a longer period of time without significantly impacting operations, the organization may have a higher RTO. When selecting a backup solution, it is important to consider the organization's RTO requirements and ensure that the solution is capable of meeting those needs. A solution that does not meet the organization's RTO requirements may not be sufficient to ensure the availability of critical services in the event of a disruption or failure.

• Question 59:

  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

  Correct Answer: D

• Question 60:

  After HVAC failures caused network outages, the support team decides to monitor the temperatures of all the devices. The network administrator cannot find a command that will display this information. Which of the following will retrieve the necessary information?

  A. SNMP OID values

  B. NetFlow data export

  C. Network baseline configurations

  D. Security information and event management

  Correct Answer: A

  The network administrator can use the Simple Network Management Protocol (SNMP) to monitor the temperatures of all the devices. SNMP is a widely-used protocol for managing and monitoring network devices, such as routers, switches, servers, and other networking equipment. SNMP allows network administrators to gather information about the performance and status of devices on the network, including temperature readings. To retrieve the temperature information, the administrator will have to configure SNMP on the devices and configure SNMP manager software on their computer. Once the SNMP manager software is configured, it will be able to send SNMP requests to the devices and retrieve information such as temperature, voltage, fan speeds, etc. Many network devices have built-in SNMP support, and the administrator may also need to install SNMP agent software on the devices to enable SNMP monitoring. The administrator can also use some specific command or tool like IPMI (Intelligent Platform Management Interface) or DCIM (Data Center Infrastructure Management) tools for monitoring the temperatures of all the devices.