220-801 · Question #238
Which of the following devices forwards any packet to all ports regardless of the packet address?
The correct answer is B. Hub. A hub is a Layer 1 device that repeats all incoming signals out of every port indiscriminately, with no ability to read or filter based on MAC or IP addresses.
Question
Which of the following devices forwards any packet to all ports regardless of the packet address?
Options
- ABridge
- BHub
- CRouter
- DSwitch
How the community answered
(23 responses)- A4% (1)
- B91% (21)
- D4% (1)
Why each option
A hub is a Layer 1 device that repeats all incoming signals out of every port indiscriminately, with no ability to read or filter based on MAC or IP addresses.
A bridge operates at Layer 2 and uses a MAC address table to selectively forward or filter frames between network segments, not broadcast to all ports.
A hub operates at the OSI Physical layer and has no intelligence to inspect packet headers or destination addresses. Every frame received on any port is immediately broadcast out all other ports, creating a single collision domain and making hubs inefficient and largely obsolete in modern networks.
A router operates at Layer 3 and uses routing tables and IP addresses to make intelligent forwarding decisions to specific destination networks.
A switch operates at Layer 2 and maintains a MAC address table to forward frames only to the specific port associated with the destination device.
Concept tested: Hub Layer 1 broadcast behavior vs. intelligent devices
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