CompTIA Network+ Practice Test

How have CAT cables evolved over time?

1. They have increased in size and thickness

2. They support better data speeds and reduce interference

3. They are designed solely for voice communication

4. They have become obsolete and replaced by wireless technology

The correct answer is: They support better data speeds and reduce interference

The evolution of CAT cables, or Category cables, primarily focuses on their ability to support higher data transmission speeds and enhance performance by reducing interference. Over the years, advancements in cable construction, insulation materials, and overall design have led to significant improvements in bandwidth capabilities and signal quality. For instance, newer categories, such as CAT5e, CAT6, and CAT6a, have been developed to support faster data rates, such as Gigabit Ethernet and beyond, making them suitable for modern networking needs. This enhanced performance is largely attributed to features such as better shielding against electromagnetic interference, which helps maintain signal integrity over longer distances. Thus, the correct choice highlights the technological advancements that have improved the functionality of CAT cables in contemporary network environments, catering to the demands for faster and more reliable data transmission. In contrast, other options do not accurately reflect the trajectory of CAT cable development. They have not necessarily increased in physical size and thickness, rather they have optimized design for efficiency. They serve a broader purpose beyond voice communication, including data transfer and various multimedia applications. Additionally, while wireless technology has certainly grown in popularity, it has not rendered CAT cables obsolete, as wired connections are still essential for certain applications requiring stable and high-speed data transfer.