Which of the following describes the operational difference between hubs and switches when transmitting data to a specific computer inside the network?
A.
Switches only send data to the specific computer, while hubs send data to all computers inside the network.
B.
Switches compress data, while hubs send uncompressed data.
C.
Switches receive data and route it to all computers inside the network, while hubs receive data and do not route.
D.
Switches scramble data, while hubs send data in the original form.
A. Switches only send data to the specific computer, while hubs send data to all computers inside the network.
Switches operate on the data link layer of the OSI model and are designed to send data only to the specific computer that is intended to receive it, based on the computer's media access control (MAC) address. This makes network communication more efficient and secure. In contrast, hubs operate at the physical layer of the OSI model and simply broadcast all data to all connected computers, which can lead to network congestion and security issues.
Because that hubs operate at OSI Layer 1 and switches operate at OSI Layer 2, the hub sends all traffic to all hosts connected to the hub. Hubs only run in half-duplex meaning it can only send and receive traffic one at a time. Switches in the other hand floods out its port except the given VLAN. While hubs create more collision domains, switches divides out collision domains and increases broadcast domains. Switches can run in either full, or half duplex.
. In effect, the computers seem to be attached to the same cable. Each computer attached to a hub receives all the traffic sent by other connected devices. This is referred to as a "collision domain." . Unlike a hub, an Ethernet switch can decode each frame and identify the source and destination MAC addresses. It can track which MAC source addresses are associated with each port. Switch forward the incoming frame to the port that matches the physical address of the device ( MAC address ). CompTIA Learn CertMaster
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