Internet traffic to boom fourfold by 2016

The Cisco Visual Networking Index said global Internet traffic by 2016 will be 1.3 zettabytes. A zettabyte is one trillion gigabytes, or one sextillion bytes.

That will be four times the level of traffic generated in 2011, according to Cisco, and comes from a proliferation of tablets, smartphones and other devices that use the Internet.

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