Despite advances in wireless technologies, many computer networks in the 21st century still rely on cables as a physical medium for devices to transfer data.
N'agbanyeghị ọganihu na teknụzụ ikuku, ọtụtụ netwọk kọmputa na narị afọ nke 21 ka na-adabere na eriri dịka ihe ntanetị maka ngwaọrụ iji nyefee data.