Answer : Disadvantages of using bus topology Performance can be very poor if network usage is high. Only one computer can send messages at a time. Others have to wait until his message is finished. If the number of computers increases, this problem may become widespread. Each barrel weakens the electrical signal. So if the bus is expanded using a large number of barrel connectors, it will have poor network performance. It is difficult to troubleshoot the bus network. If the cable breaks in the corner of the bus, it cannot be easily removed. As a result of bus breakdown, the entire network became useless. Then one computer has to test from one end of the bus to the other to find out the bill brake of the other with the help of cable tester or any other device. When the number of computers in the network is high, heavy traffic is generated and data transmission is disrupted. There are no coordinates for data transmission in this topology. Any computer can transmit data at any time. This causes a lot of bandwidth loss in the network. This system wastes more time on computers interrupting each other than on data transmission.