220-801 · Question #732
Which of the following describes the function of a hub in a network?
The correct answer is D. Broadcasts packets it receives to all connections. A hub is a Layer 1 device with no packet intelligence; it simply repeats every received signal out of all ports simultaneously.
Question
Which of the following describes the function of a hub in a network?
Options
- ABroadcasts packets it receives to specific connections
- BDetermines whether a packet belongs on an internal or external network
- CConverts a packet for transmission from one network to another network
- DBroadcasts packets it receives to all connections
How the community answered
(41 responses)- A2% (1)
- B2% (1)
- C7% (3)
- D88% (36)
Why each option
A hub is a Layer 1 device with no packet intelligence; it simply repeats every received signal out of all ports simultaneously.
Forwarding packets to specific connections describes a switch, which uses a MAC address table to direct traffic only to the correct destination port.
Determining whether a packet belongs on an internal or external network is a function of a router or firewall, not a hub.
Converting packets for transmission from one network to another describes a router operating at OSI Layer 3.
Hubs operate at OSI Layer 1 and maintain no MAC address table, so every incoming frame is flooded out all ports except the receiving port, creating a single shared collision domain for all connected devices.
Concept tested: Hub OSI Layer 1 broadcast behavior
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