Both? There are more than two network topologies available.
Bus star ring mesh hybrid
Star network,ring network,tree network,bus network
hierarchical (extended) star topology
Star Topology
point-to-point
netwok topology is firstly the process of configuring computer system and peripherals in other for it to have a maintained and stabled communication link in a network environment. so there must be a layout of configuration and networking environment....
he most commonly used network topology is a hybrid topology called the Star Bus TopologyRead more: http://wiki.answers.com/What_is_network_topology_and_give_an_example_of_the_most_common_network_topology#ixzz1TrCMGlb6
STAR
Topology
Topology in networking refers to the arrangement of different elements (links, nodes, etc.) in a computer network. The advantage of topology is that it can enhance network performance and reliability by optimizing data flow and minimizing bottlenecks. However, a disadvantage is that certain topologies can be complex and costly to implement or maintain, and failures in specific configurations (like a star topology) can disrupt the entire network. Choosing the right topology depends on the specific needs and scale of the network.
A node is a single workstation present in a computer networking, many node together when combined makes a network.
yes, network topology does matter to design a network. as we know that topology is a structure of network. without a topology network cannot be designed. we have to consider which topology to use and what does each topology does. different topology have its different features. if you want most secure connection use full mesh topology