Answer:
Internet
The Internet is the most commonly used network technology with billions of daily users throughout the world.
Local Area Network
A Local Area Network (LAN) connects two or more computers together via Ethernet cables.
Wireless Area Network
A Wireless Area Network (WAN) has the same function of connecting computers on a home or office network as a LAN, but it distributes the signal wirelessly.
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# Cary on learning
The answer is (b) Rigid-metal
If you are installing a conduit for a mast service, the type of conduit to be used should be a rigid metal type. Among the three types of steel conduit, the most preferable to install is the rigid metal type instead of an intermediate metal conduit and electrical metallic tubing. Rigid metal conduit is a ferrous metal.
