Which of the following is a common tool used in cable installations?

The tool commonly used in cable installations is the cable crimper. A cable crimper is essential for attaching connectors to the ends of cables, allowing for secure connections in various applications, such as data and telecommunications setups. This tool is particularly important when working with coaxial cables or network cables, where a proper termination ensures reliability and performance in signal transmission.

In the context of cable installations, while the other tools mentioned may have their own applications, they do not play the central role in creating durable connections that the cable crimper does. For example, wire strippers are useful for removing insulation from wires but do not attach connectors. Cable hooks might assist in managing or securing cables during installation, while panel openers are used to access equipment panels rather than to directly work on cables themselves. Thus, the cable crimper stands out as a fundamental tool for ensuring proper cable terminations, making it the most relevant choice in this scenario.