Question 1 : Which type of unshielded twisted pair (UTP) cable is commonly used for 1000BASE-T Ethernet networks and is often made of relatively thick conductors (for example, 22 gauge or 23 gauge wire) and thick insulation?

Category 6 Cabling

Explanation:

Category 6 cables are High-performance UTP cable that can transmit data 10/100/1000Mbps transfer and up to 10Gbps over shorter distances. They usually make uses of a longitudinal separator, this seperators always tend to separates each of the four pairs of wires from each other.

A twisted-pair cable is a cables that is mostly made of copper wires that are twisted around each other and are surrounded by a plastic jacket, twisted pair cables are majorly used for networking.

There are two types of twisted pair cable,

UTP (Unshielded Twisted Pair) are a type of twisted pair cabling that does not include shielding around its conductors.

STP (shielded twisted pair) are types of twisted pair cabling that does include shield around its conductors.

A category 6 cable can eithet be pure copper UTP or STP.

And they are best for networking.