STD and ISD are associated with

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Telephone Network

Newspaper network

Computer network

Radio network

answer is A.

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Detailed Solution

STD and ISD are associated with Telephone Network.
ISD: International Subscriber Dialling (ISD) is the term used to depict a worldwide call dialled by the guest as opposed to going through an administrator.
STD: Stands for Subscriber Trunk Dialling. It was introduced when supporters used to settle on significant distance decisions without administrators' help.

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