PUZZLE
ACROSS:

1.each pairof wires is wrapped in a metallic foil.
3.one or more optical fibers enclosed in a sheath or jacket
5.used to connect two devices directly.
6.cable that has two or four pairs of wires.
7.the standard cable used for almost all purposes.

DOWN:
1.cable that has very thin core.
2.cable that has a thicker core.
4.used for telephone communications and ethernet networks.
5.copper-cored cable.​