Step 1: Understanding the Question:
The question asks to identify the fundamental data delivery behavior of a network Hub when transmitting incoming data packets to other connected devices. Step 2: Characteristics of a Hub:
- A hub is a simple, passive networking hardware device that operates at the Physical Layer (Layer 1) of the OSI model.
- It does not possess any internal processing intelligence, meaning it cannot inspect the contents of data packets or store hardware/MAC addresses. Step 3: Detailed Explanation:
- When a data packet arrives at one port of a hub, the hub does not read the destination MAC address to decide where to send it.
- Instead, it simply duplicates the incoming electrical signals and retransmits them through all other active ports (except the port from which the packet was received).
- This process of sending a message to all connected devices in the network segment simultaneously is called Broadcasting.
- It does not do Unicasting (directing to a single host) or Filtering because it lacks a MAC address lookup table. It cannot do selective forwarding. Step 4: Final Answer:
A network hub operates as a broadcasting device, forwarding all received data to every connected port.
Hence, option (D) is the correct choice.
