Multiple choice question:

Subscriber Trunk dialling and International Subscriber dialling is associated with

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Telephone network

Newspaper network

Computer network

Radio network

answer is A.

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Detailed Solution

Telephone Network is related to STD (subscriber trunk dialling) and ISD (international subscriber calling).
Telecommunications networks connect telephones all around the world. As more people began to purchase telephones to share their views and personal information, a new revolution began in the 1920s. Trunking technology evolved from telegraphy and was later applied to telephone systems. Subscriber trunk dialling is widely used in the United Kingdom, Ireland, Australia, India, and Southeast Asia. ISD (International subscriber dialling) or International direct calling is a service made available by a telephone network. In ISD, the subscriber dials an international call directly rather than through a telephone operator.

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