Choosing the right internet cable depends on your speed requirements, distance, and network setup. 

1. Ethernet Cables (Wired Connections)
Best for: Home networks, gaming, streaming, and office setups.
Types:
Cat 5: Up to 100 Mbps (outdated, not recommended for new setups).
Cat 5e: Up to 1 Gbps, reduced crosstalk (good for most homes).
Cat 6: Up to 10 Gbps (at shorter distances, better for future-proofing).
Cat 6a: Up to 10 Gbps over longer distances (shielding reduces interference).
Cat 7/8: Up to 40 Gbps (Cat 8), shielded for high-speed data centers (overkill for most homes).
Best Choice for Most Users: Cat 5e or Cat 6 (balances speed and cost).

2. Coaxial Cables (Cable Internet)
Best for: ISPs like Xfinity, Spectrum, or Cox that deliver internet via cable TV lines.
Used for modem-to-wall connections.
Supports high speeds (up to 1 Gbps+ with DOCSIS 3.1).
Not used for device-to-device connections (like Ethernet).

3. Fiber Optic Cables

Best for: Ultra-fast internet (Gigabit+ speeds).

Used by ISPs like Google Fiber, AT&T Fiber.

Requires a fiber-compatible modem/router (ONT).

Immune to electromagnetic interference.
Not typically used for home wiring (Ethernet is still used inside homes).

4. DSL Cables (Phone Lines)
Best for: Rural areas with limited options.
Uses RJ11 connectors (like old telephone cables).
Slower speeds (typically 10-100 Mbps).
Being phased out in favor of fiber and cable.