MCQ IN COMPUTER SCIENCE & ENGINEERING

COMPUTER SCIENCE AND ENGINEERING

COMPUTER NETWORKING

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Why are hubs not very efficient?
A
Ethernet protocols are slower than IP
B
Because witches use switches
C
There might be too many people logged on
D
They transmit data on ALL ports
Explanation: 

Detailed explanation-1: -Hubs are at a disadvantage against switches in networking because hubs are unable to differentiate between the devices on the network. If one computer is trying to reach another on a hub-based network, the computer will send the message to every other computer on the network, consuming bandwidth for each transfer.

Detailed explanation-2: -All information sent to a hub is automatically sent to all ports of the devices connected to it.

Detailed explanation-3: -Disadvantages of Hub It does not include mechanisms such as collision detection. It does not operate in full-duplex mode and cannot be divided into the Segment. It cannot reduce the network traffic as it has no mechanism. It is not able to filter the information as it transmits packets to all the connected segments.

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