CompTIA
220-801 · Question #805
220-801 Question #805: Real Exam Question with Answer & Explanation
The correct answer is D: Broadcasts data to all network devices. A hub is a Layer 1 device that forwards all incoming data to every port without any filtering or intelligence. Unlike switches, hubs have no concept of addressing.
Question
Which of the following BEST describes a hub?
Options
- ADetermines the best route to transmit data
- BInspects traffic and accepts or declines transmission
- CBroadcasts data to specific network devices
- DBroadcasts data to all network devices
Explanation
A hub is a Layer 1 device that forwards all incoming data to every port without any filtering or intelligence. Unlike switches, hubs have no concept of addressing.
Common mistakes.
- A. Determining the best route is the function of a router, which operates at Layer 3 using IP addresses.
- B. Inspecting traffic and accepting or declining transmissions describes a firewall, not a hub.
- C. Broadcasting to specific devices describes a switch, which uses MAC address tables to forward frames only to the intended destination port.
Concept tested. Hub function and Layer 1 broadcast behavior
Reference. https://learn.microsoft.com/en-us/windows-server/networking/technologies/nic-teaming/nic-teaming
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