In which topology is each computer connected by a single cable to a central device?

• A. Star
• B. Ring
• C. Mesh
• D. Bus

Answer: (A)

Understanding network topology and how devices connect to a central point is being tested. In a star arrangement, each computer has its own dedicated cable to a central device such as a switch or hub. This makes traffic management centralized and simplifies expansion, and a failure typically affects only the single link or device rather than the whole network. Other topologies work differently: a ring forms a closed loop where data moves around the path; a mesh has multiple interconnections for redundancy, requiring many cables; and a bus uses a single shared backbone that all devices tap into, so a problem on that backbone can impact everyone.