CompTIA Updated N10-008 Exam Questions and Answers by elisei

• An access control list (ACL) is a set of rules that defines which traffic is allowed or denied on a network device, such as a router or a firewall12.
• An ACL can be used to filter traffic based on various criteria, such as source or destination IP address, port number, protocol, or time of day12.
• By implementing an ACL on the edge router of the network, the network administrator can block the unauthorized IP address from entering the secure part of the network every night at 8:00 pm12.
• This solution would address the concerns of the network administrator, as it would prevent the unauthorized IP address from accessing the critical server or any other resource on the secure network12.
• Changing the VLAN of the web server (A) or changing the server’s IP address (B) would not stop the unauthorized IP address from entering the network, as it could still scan the network for other open ports or vulnerabilities12.
• Instating a rule on the firewall connected to the web server (D) would only protect the web server, but not the rest of the secure network, from the unauthorized IP address12. References:
• CompTIA Network+ N10-008 Certification Study Guide, Chapter 4: Network Operations, Section 4.3: Network Security Devices and Technologies, pp. 212-213.
• Professor Messer’s CompTIA N10-008 Network+ Course, Section 4.3: Network Security Devices and Technologies, Video: Access Control Lists.

Band-steering is a feature that allows an AP to steer dual-band capable clients to the less congested 5GHz frequency, leaving the 2.4GHz frequency for legacy clients. Without band-steering, the AP may have more clients competing for the same channel on the 2.4GHz frequency, resulting in high latency and airtime contention.

References:

• According to the CompTIA Network+ Certification Exam Objectives, one of the topics covered in the exam is “Given a scenario, use appropriate wireless technologies and configurations”. One of the subtopics is “Band steering” 1.
• According to the PoliFi: Airtime Policy Enforcement for WiFi paper, “Band steering allows the access point to disable the 2.4 GHz band from probing the client device, so it responds only to the 5 GHz band, reducing the congestion on the 2.4 GHz band while taking advantage of the faster 5GHz band to improve user’s network experience.” 2.
• According to the Aruba Air Slice Tech Brief, “Air Slice minimizes airtime contention and efficiently groups Wi-Fi 6 and non-Wi-Fi 6 client devices to guarantee bit rate, and provide bounded latency and jitter simultaneously.” 3.

LC (local connector) is the most likely fiber connector type to be used on a network interface card, because it is a small form factor connector that can fit more interfaces on a single card. LC connectors use square connectors that have a locking mechanism on the top, similar to an RJ45 copper connector. LC connectors are also compatible with SFP (small form-factor pluggable) modules that are often used to link a gigabit Ethernet port with a fiber network12.

References:

• Optical Fiber Connectors – CompTIA Network+ N10-007 – 2.11
• CompTIA Network+ Certification Exam Objectives2

A camera is most likely to utilize PoE (Power over Ethernet). PoE is a technology that allows electrical power to be delivered over Ethernet cables. It is used to power a variety of devices, such as cameras, phones, access points, and other networking equipment.Cameras are particularly well-suited for PoE because they are often installed in locations where it is difficult or impossible to run electrical power. By using PoE, cameras can be powered directly over the Ethernet cable, eliminating the need for separate power cables and outlets.Other devices, such as printers, hubs, and modems, are less likely to utilize PoE because they typically do not need to be powered over Ethernet. These devices are usually powered by AC (alternating current) power and are typically connected to a power outlet rather than an Ethernet cable.