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Q: In a star network, how many lines are required for connecting N nodes to the host node?
  • A. N + 1
  • B. N/2
  • C. (N/2) – 1
  • D. N – 1
Correct Answer: Option D - In star network (N–1) lines are required for connecting N-nodes to host nodes. Star topology is a network topology in which all nodes are connected to a central hub or switch. Nodes communicate across the network by passing data through the hub. In this, if one terminal fails then other terminals are not affected. Star network topology is used to connect terminals to a large time-sharing host computer.
D. In star network (N–1) lines are required for connecting N-nodes to host nodes. Star topology is a network topology in which all nodes are connected to a central hub or switch. Nodes communicate across the network by passing data through the hub. In this, if one terminal fails then other terminals are not affected. Star network topology is used to connect terminals to a large time-sharing host computer.

Explanations:

In star network (N–1) lines are required for connecting N-nodes to host nodes. Star topology is a network topology in which all nodes are connected to a central hub or switch. Nodes communicate across the network by passing data through the hub. In this, if one terminal fails then other terminals are not affected. Star network topology is used to connect terminals to a large time-sharing host computer.