COMPUTER FUNDAMENTALS

COMPUTER NETWORKS AND COMMUNICATIONS

NETWORK TOPOLOGIES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following devices broadcasts a signal to all other devices on a network?
A
A Hub
B
A Switch
C
A Gateway
D
A Server
Explanation: 

Detailed explanation-1: -A network hub is a node that broadcasts data to every computer or Ethernet-based device connected to it. A hub is less sophisticated than a switch, the latter of which can isolate data transmissions to specific devices.

Detailed explanation-2: -A hub has many ports and a computer which intends to be connected to the network is plugged into one of these ports. When a data frame arrives at a port, the hub broadcasts it to every other port, without considering whether it is destined for a particular destination or not.

Detailed explanation-3: -A hub is a device to which all devices sharing a physical network can be a physically connected to form a Local Area Network or LAN. Hubs do little more than enable the electrical currents from a computer sending a packet to pass to all other devices connected to it.

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