Data communications

{"id"=>2252, "level_no"=>1, "level_title"=>"Data communications 1", "notes"=>"Data communications refers to the transmission of this digital data between two or more computers and a computer network or data network is a telecommunications network that allows computers to exchange data. The physical connection between networked computing devices is established using either cable media or wireless media. The best-known computer network is the Internet.", "challenge_id"=>996, "created_at"=>Wed, 31 May 2023 07:03:24.447522000 UTC +00:00, "updated_at"=>Wed, 31 May 2023 07:03:24.447522000 UTC +00:00}