RG11 coaxial cable with quad shielding is designed to handle large volumes of internet traffic, providing excellent resistance to interference and high bandwidth capacity.
Why Not A (USB 3.1): USB 3.1 is used for connecting peripherals, not for high-volume internet traffic.
Why Not C (SATA3.0): SATA is used for internal data storage connections, not for network traffic.
Why Not D (Unshielded plenum RJ45): While RJ45 cables are commonly used, unshielded cables are prone to interference and are not ideal for high-volume traffic.
CompTIA A+ Exam Reference: Core 1 (220-1101), Section 3.1, cable types and their characteristics.

When replacing a power supply in a computer, wearing an antistatic wrist strap is crucial to prevent static electricity from damaging the computer components. Static electricity can easily damage sensitive electronic components within the computer; therefore, using an antistatic wrist strap helps to ground the technician, mitigating the risk of electrostatic discharge. The other options provide general safety but do not address the primary concern of electrostatic discharge in this context.
References:CompTIA A+ Core 1 (220-1101) objectives covering best practices for hardware maintenance, including electrostatic discharge prevention.

Reference: https://www.comptia.org/training/books/a-core-1-220-1101-study-guide (page 59)