CompTIA CompTIA Certifications N10-008 Questions & Answers

• Question 271:

  A network technician wants to deploy a new wireless access point to reduce user latency. Currently, the organization has the following deployed: Which of the following channels should the new device broadcast on?

  A. Channel 3

  B. Channel 9

  C. Channel 10

  D. Channel 11

  Correct Answer: D

  The best channel for a new wireless access point is one that does not overlap with the existing channels used by other devices. Overlapping channels can cause interference and degrade the performance of the wireless network. According to the web search results, the 2.4 GHz band has 11 channels in the U.S., but only channels 1, 6, and 11 are non- overlapping. Since the existing devices are using channels 1 and 6, the new device should use channel 11 to avoid adjacent-channel interference12

• Question 272:

  A technician is configuring a bandwidth-monitoring tool that supports payloads of 1,600 bytes. Which of the following should the technician configure for this tool?

  A. LACP

  B. Flow control

  C. Port mirroring

  D. Jumbo frames

  Correct Answer: D

  Jumbo frames are Ethernet frames that can carry more than the standard 1,500 bytes of payload data. Jumbo frames can support payloads of up to 9,000 bytes, depending on the network device and configuration. Jumbo frames can improve network performance by reducing the overhead of packet headers and increasing the efficiency of data transmission. Jumbo frames can also reduce the CPU utilization of the sender and receiver devices, as they require fewer interrupts and processing cycles. However, jumbo frames also have some drawbacks, such as increased latency, fragmentation, and compatibility issues. Therefore, jumbo frames should be used with caution and only in networks that support them end-toend. A technician who is configuring a bandwidth-monitoring tool that supports payloads of 1,600 bytes should enable jumbo frames for this tool, as this would allow the tool to capture and analyze more data per frame and provide more accurate and detailed results. However, the technician should also ensure that the network devices and interfaces that the tool is connected to also support jumbo frames, and that the MTU (maximum transmission unit) is set to the same value across the network path.

• Question 273:

  A network administrator needs to add access points to the network because coverage in some areas is improper. Which of the following should the administrator do first?

  A. Interference analysis

  B. Wireless survey

  C. Traffic analysis

  D. Packet capture

  Correct Answer: B

  A wireless survey is the first step that a network administrator should do before adding access points to the network. A wireless survey is a process of collecting data about the wireless environment, such as signal strength, channel usage, interference, and coverage. A wireless survey can help the network administrator to determine the optimal locations and configurations for the access points to provide the best possible coverage and performance for the wireless network. A wireless survey can also help to identify and troubleshoot any issues that may cause improper coverage in some areas. https://www.cisco.com/c/en/us/support/docs/wireless/5500-series-wireless- controllers/116057-site-survey-guidelines-wlan-00.html

• Question 274:

  Which of the following cables is the most appropriate to use when running bulk cables in ceilings?

  A. Plenum

  B. Coaxial

  C. Ethernet

  D. DAC

  Correct Answer: A

  Plenum cable is the most appropriate to use when running bulk cables in ceilings because it is designed to meet fire safety standards and reduce the risk of toxic smoke in plenum spaces, which are areas with air flow above or below floors.

• Question 275:

  Which of the following is required for hosts to receive DHCP addresses from a server that is located on a different subnet?

  A. DHCP scope

  B. DHCP snooping

  C. DHCP reservations

  D. DHCP relay

  Correct Answer: D

  A DHCP relay is a network device that forwards DHCP requests from clients on one subnet to a DHCP server on another subnet. This allows the DHCP server to assign IP addresses and other network configuration parameters to clients across different subnets. A DHCP scope is a range of IP addresses that a DHCP server can assign to clients. A DHCP snooping is a security feature that filters and validates DHCP messages on a switch. A DHCP reservation is a way to assign a specific IP address to a specific client based on its MAC address. References: Part 2 of the current page talks about DHCP relay and its functions. You can also find more information about DHCP relay on [this page].

• Question 276:

  A network administrator is setting up a web-based application for a company. The application needs to be continually accessible to all end users.

  Which of the following would best ensure this need is fulfilled?

  A. NIC teaming

  B. Cold site

  C. Snapshots

  D. High availability

  Correct Answer: D

  High availability is a quality of a system or component that assures a high level of operational performance for a given period of time. High availability means that an IT system, component, or application can operate at a high level, continuously, without intervention, for a given time period. High-availability infrastructure is configured to deliver quality performance and handle different loads and failures with minimal or zero downtime. High availability is important for web-based applications, as it ensures that the application is always accessible to the end users, even in the event of a server or component failure. High availability can be achieved by eliminating single points of failure, implementing redundancy, load balancing, and failover mechanisms.

• Question 277:

  Which of the following, in addition to a password, can be asked of a user for MFA?

  A. PIN

  B. Favorite color

  C. Hard token

  D. Mother's maiden name

  Correct Answer: A

  MFA stands for Multi-Factor Authentication, which is a method of verifying the identity of a user by requiring two or more pieces of evidence that belong to different categories:

  something the user knows, something the user has, or something the user is. A password is something the user knows, and it is usually combined with another factor such as a PIN (Personal Identification Number) or a hard token (a physical

  device that generates a one- time code) that the user has. A favorite color or a mother's maiden name are not suitable for MFA, as they are also something the user knows and can be easily guessed or compromised.

• Question 278:

  A network technician needs to use an RFC1918 IP space for a new office that only has a single public IP address. Which of the following subnets should the technician use for the LAN?

  A. 10.10.10.0/24

  B. 127.16.10.0/24

  C. 174.16.10.0/24

  D. 198.18.10.0/24

  Correct Answer: A

  The RFC1918 IP space is a set of private IP addresses that are not routable on the public Internet and can be used for internal networks. The RFC1918 IP space consists of three ranges: 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/161 Out of the four options, only A. 10.10.10.0/24 belongs to one of these ranges, specifically the 10.0.0.0/8 range. Therefore, the technician should use this subnet for the LAN. References1: https://en.wikipedia.org/wiki/Private_network

• Question 279:

  Which of the following is most likely responsible for the security and handling of personal data in Europe?

  A. GDPR

  B. SCADA

  C. SAML

  D. PCI DSS

  Correct Answer: A

  GDPR stands for General Data Protection Regulation, which is a European Union regulation on information privacy and security. It applies to any organization that collects or processes personal data of individuals in the EU, and it sets out rules and requirements for data protection, consent, breach notification, and enforcement1 References1: https://en.wikipedia.org/wiki/General_Data_Protection_Regulation

• Question 280:

  A network administrator is connecting two Layer 2 switches in a network These switches must transfer data in multiple networks. Which of the following would fulfill this requirement?

  A. Jumbo frames

  B. 802. IQ tagging

  C. Native VLAN

  D. Link aggregation

  Correct Answer: B

  The technique that would fulfill the requirement of transferring data in multiple networks is 802.1Q tagging. 802.1Q tagging is a method of adding a tag or identifier to Ethernet frames that indicate which VLAN (Virtual Local Area Network) they belong to. VLANs are logical subdivisions of a network that allow devices in different physical locations or segments to communicate as if they were in the same network. VLANs improve network performance, security, and management by reducing broadcast traffic, isolating sensitive data, and grouping devices by function or department. By using 802.1Q tagging, two Layer 2 switches can exchange data from multiple VLANs over a single trunk link, without mixing or losing the VLAN information. References: CompTIA Network+ N10-008 Certification Study Guide, page 64; The Official CompTIA Network+ Student Guide (Exam N10-008), page 2-12.