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CompTIA Network+ certification is highly valued by employers as it demonstrates that the candidate has the necessary skills and knowledge to manage and troubleshoot complex network infrastructures. It is also a prerequisite for many advanced certifications such as the Cisco Certified Network Associate (CCNA) and the Microsoft Certified Solutions Expert (MCSE).

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CompTIA Network+ certification is a globally recognized certification that validates an individual's skills and knowledge in network administration. CompTIA Network+ Certification Exam certification is ideal for individuals who are interested in pursuing a career in network administration, including network technicians, network engineers, network administrators, and network support specialists. CompTIA Network+ Certification Exam certification is also recognized by leading technology companies, including Cisco, Microsoft, and HP, which makes it a valuable asset for individuals who are looking to advance their careers in the field of networking.

CompTIA Network+ Certification Exam Sample Questions (Q215-Q220):

NEW QUESTION # 215
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. Port mirroring
B. LACP
C. Jumbo frames
D. Flow control

Answer: C

Explanation:
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-to-end.
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.
Reference
What are Jumbo Frames?
How to Enable Jumbo Frames
CompTIA Network+ Certification All-in-One Exam Guide, Eighth Edition (Exam N10-008)

NEW QUESTION # 216
An attacker targeting a large company was able to inject malicious A records into internal name resolution servers. Which of the following attack types was MOST likely used?

A. DNS poisoning
B. On-path
C. Rogue DHCP
D. IP spoofing

Answer: A

Explanation:
DNS poisoning is a type of attack that exploits vulnerabilities in the Domain Name System (DNS) to redirect traffic intended for a legitimate website to a malicious site. This can allow attackers to collect sensitive information such as login credentials, or infect visitors with malware12.
DNS poisoning can be achieved by injecting malicious A records into internal name resolution servers. An A record is a type of DNS record that maps a domain name to an IP address. By changing the A record of a legitimate domain to point to a malicious IP address, an attacker can trick users into visiting the wrong site3.
The other options are not correct because:
An on-path attacker places themselves between two devices (often a web browser and a web server) and intercepts or modifies communications between the two. The attackers can then collect information as well as impersonate either of the two agents2. This is different from DNS poisoning, which does not involve intercepting or modifying communications, but rather changing DNS records or responses.
IP spoofing is a technique that allows an attacker to send packets with a forged source IP address, pretending to be someone else. It is used to bypass authentication, launch denial-of-service attacks, or perform man-in-the-middle attacks2. This is different from DNS poisoning, which does not involve sending packets with a forged IP address, but rather changing DNS records or responses.
A rogue DHCP server is an unauthorized DHCP server that is connected to a network and offers IP configuration to clients. It can be used to assign malicious IP addresses, gateway addresses, or DNS server addresses to unsuspecting users, redirecting their traffic to malicious sites or servers2. This is different from DNS poisoning, which does not involve offering IP configuration, but rather changing DNS records or responses.
Reference:
1: Domain Hijacking vs DNS Poisoning: Do You Know the Difference? - Heimdal Security
2: What is an on-path attacker? - Cloudflare
3: What are the types of DNS spoofing? - Information Security Stack Exchange

NEW QUESTION # 217
Which of the following is required when connecting an endpoint device with an RJ45 port to a network device with an ST port?

A. A media converter
B. A bridge
C. A load balancer
D. An MDIX

Answer: A

Explanation:
The device that is required when connecting an endpoint device with an RJ45 port to a network device with an ST port is a media converter. A media converter is a device that converts signals between different types of media, such as copper and fiber. An RJ45 port is used for twisted-pair copper cables, while an ST port is used for fiber-optic cables. A media converter allows these two types of cables to interconnect and communicate. Reference: CompTIA Network+ N10-008 Certification Study Guide, page 54; The Official CompTIA Network+ Student Guide (Exam N10-008), page 2-5.

NEW QUESTION # 218
A network consultant is setting up a new wireless infrastructure. The new infrastructure is primarily focused on supporting legacy equipment that does not support the newest standards. Which of the following frequency ranges will the consultant most likely have to support?

A. 6GHz
B. 2.4GHz
C. 5.9GHz
D. 5GHz

Answer: B

Explanation:
The most likely frequency range that the network consultant will have to support is 2.4GHz. This is because the most common legacy wireless standards, 802.11b and 802.11g, use the 2.4GHz range1. IEEE 802.11a uses
5GHz exclusively, and 5.9GHz and 6GHz are not widely used by legacy equipment. Therefore, A. 2.4GHz is the correct answer.
https://www.networkcomputing.com/networking/wireless-beginners-part-1-rf-and-waves

NEW QUESTION # 219
A systems administrator wants to use the least amount of equipment to segment two departments that nave cables terminating in the same room. Which of the following would allow this to occur?

A. A hub
B. A Layer 3 switch
C. The RSSI was not strong enough on the link
D. A Layer 7 firewall
E. A load balancer
F. A proxy server

Answer: B

Explanation:
The question asks about the least amount of equipment to segment two departments that have cables terminating in the same room.
Segmentation is the process of dividing a network into smaller logical units for security, performance, or management purposes.
One way to segment a network is by using VLANs (virtual LANs), which are logical groups of devices that share the same broadcast domain, regardless of their physical location or connection.
VLANs can be configured on switches that support Layer 2 or Layer 3 functionality. Layer 2 switches operate at the data link layer and forward frames based on MAC addresses. Layer 3 switches operate at the network layer and forward packets based on IP addresses.
A Layer 3 switch can perform both Layer 2 and Layer 3 functions, and can also route traffic between different VLANs without the need for an external router. This makes it a versatile and efficient device for network segmentation.
Therefore, the answer is C, a Layer 3 switch, as it can segment two departments with the least amount of equipment.
Reference:
CompTIA Network+ N10-008 Study Guide, Chapter 2: Network Devices and Technologies, Section 2.1: Network Devices, Pages 74-75 Professor Messer's CompTIA N10-008 Network+ Course, Video 2.1: Network Devices, Part 1 Network + N10-008 practice exam, Question 977, Answer C, Explanation

NEW QUESTION # 220
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CompTIA Network+ Certification Exam Sample Questions (Q215-Q220):

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