Final answer:
The blank is to be filled with 'keystone' referencing the keystone jack in networking installations, where wires are arranged according to the T568A color scheme and securely connected using a 110 termination tool.
Step-by-step explanation:
To install to the keystone jack, you must first fan the wires and then attach them using the 110 termination tool, according to the T568A standard. This process involves organizing the individual wires according to the T568A color scheme, which is one of the two standard color codes used in network cabling. Once the wires are properly aligned, they are placed into the keystone jack and then punched down using the 110 termination tool to secure the connections. It's important to ensure that the wires are fully seated in the correct order and firmly connected within the keystone jack for a reliable network connection.