CompTIA Updated N10-008 Exam Questions and Answers by zofia

The 802.11n standard is the most suitable option for this scenario. It operates in both the 2.4GHz and 5GHz frequency bands, providing better performance and higher data rates compared to older standards like 802.11b and 802.11g.

• 802.11n (also known as Wi-Fi 4): This standard supports multiple-input and multiple-output (MIMO) technology, which allows for better coverage, increased throughput, and improved reliability. It operates in both the 2.4GHz and 5GHz frequency bands, making it compatible with a wide range of devices. The 5GHz band provides less interference and higher data rates, making it suitable for modern networks.
• 802.11b: This older standard operates only in the 2.4GHz band and has a maximum data rate of 11 Mbps. It is not recommended for high-performance networks.
• 802.11g: This standard also operates in the 2.4GHz band and offers a maximum data rate of 54 Mbps. While it is faster than 802.11b, it is still not as efficient as 802.11n.

References:

• Professor Messer’s Network+ Study Guide
• CompTIA Network+ N10-008 Study Guide

• The question asks for a wireless solution that provides the largest coverage across the city with a minimal number of transmission towers. Latency and overall bandwidth needs are not high priorities.
• 5G is a wireless technology that offers high speed, low latency, and large capacity, but it requires more transmission towers and has a shorter range than 4G1.
• LTE stands for Long Term Evolution and is a 4G wireless technology that offers wide coverage, good speed, and moderate latency. It uses fewer transmission towers than 5G and has a longer range2.
• Wi-Fi 4, Wi-Fi 5, and Wi-Fi 6 are wireless standards that operate in the 2.4 GHz and 5 GHz frequency bands. They offer high speed, low latency, and large capacity, but they have a limited range and require more access points than cellular technologies3.
• Therefore, the best option for the city’s needs is LTE, as it provides the largest coverage with a minimal number of transmission towers, and does not require high speed or low latency.

References:

• 5G vs 4G: What’s the difference?
• What is LTE?
• Wi-Fi Standards Explained: What You Should Know

Stratum 1 devices are the most accurate ntp time sources accessible via a network connection. A Stratum 1 device would normally be synchronised via a Stratum 0 reference clock.

Single-mode fiber is a type of optical fiber that has a small core diameter and allows only one mode of light to propagate. This reduces signal attenuation and increases transmission distance, making it suitable for long-distance communication networks. Single-mode fiber can carry data over thousands of kilometers without requiring repeaters or amplifiers. Single-mode fiber is also immune to electromagnetic interference and has a higher bandwidth than multimode fiber. Therefore, single-mode fiber is the best cable type for connecting sites on multiple continents. References: [CompTIA Network+ Certification Exam Objectives], [Single-mode optical fiber - Wikipedia]

Single-mode fiber optic cable uses a single ray of light to transmit data. This allows it to achieve very low attenuation and high bandwidth.

Multimode fiber optic cable uses multiple rays of light to transmit data. This results in higher attenuation and lower bandwidth than single-mode cable.

Twisted pair copper cable uses two insulated copper wires to transmit data. It is less expensive than fiber optic cable, but it has higher attenuation and lower bandwidth.

When choosing a cable type for a long-distance application, it is important to consider the following factors:

• Attenuation: The amount of signal loss that occurs over the length of the cable.
• Bandwidth: The amount of data that can be transmitted over the cable per second.
• Cost: The cost of the cable and installation.

Single-mode fiber optic cable is the best choice for long-distance applications because it has the lowest attenuation and highest bandwidth of any cable type. However, it is also the most expensive cable type.