Networking

1. Read the text about the concept of Global Network Infrastructure.

A global network is any communication network which spans the entire Earth, and global span was achieved in 1899. The telephony network was the second to achieve global status, in the 1950s. More recently, interconnected IP networks (principally the Internet, with estimated 2.5 billion users worldwide in 2014), and the GSM mobile communication network (with over 6 billion worldwide users in 2014) form the largest global networks of all.

Setting up global networks requires immense, costly and lengthy efforts lasting for decades. Elaborate interconnections, switching and routing devices, laying out physical carriers of information, such as land and submarine cables and earth stations must be set in operation. In addition, international communication protocols, legislation and agreements are involved.

2. Answer the questions.

1. How many global networks exist nowadays?

2. Which of the established networks is nearly out of use, and why?

3. Which of the global networks is the most used one?

4. What steps are necessary to set up a global network?

5. Why does it take decades to set up a global network?

3. What specialists are involved in establishing a global network? Tell in brief about their tasks. Use the following forms.

To set up a global network … are needed. Their task is ….

… are involved in establishing a global network. They are responsible for ….

4. Here are the words and word combinations you have to learn.

Adhere, address space, circuit-switched telephone network, core network, implement, implementation, intermediate node, land cables, link, message switching, microwave transmission link, node, packet switching, private branch exchange (PBX),public switched telephone network(PSTN), public telephone operators (PTO), terminal node, span, submarine cables, switch, switching and routing devices, telephone exchange, transmission link, virtual network operator (VNO).

5. Read and translate the text.