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1. Indian Oil Corporation :  Indian Oil Corporation Limited, commonly known as Indian Oil is an Indian state owned oil and gas company headquartered in Mumbai . State Bank of India 3. HPCL :  Hindustan Petroleum Corporation Limited is an Indian state-owned oil and natural gas company with its headquarters at Mumbai, Maharashtra. It has about 25% market-share in India among public-sector  companies and a strong marketing infrastructure 4. Tata Steel Limited    :    Tata Steel Limited is an Indian multinational steel-making company headquartered in Mumbai, Maharashtra, India, and a subsidiary of the Tata Group 5. Hindalco Industries Ltd   :   Hindalco Industries Ltd., an aluminium manufacturing company, is a subsidiary of the Aditya Birla Group. Its headquarters are at Mumbai, Maharashtra, India. It is the Flagship company of the company in the metals business 6. NTPC Ltd   :  NTPC Ltd., formerly known as National T...

Question 1:- What is the Difference between Hub and Switch? Ans :- HUB Hub is a Layer 1 Device Hub is not more intelligent device Hub does not reads the frame Hub provides the always broadcasting in the network we cannot configure Hub In Hub the rate of data transmission is slow hub is a half duplex device the rate of data transmission is divided in hub hub does not provide packet filtering in the network hub is a single broadcast domain hub is a single collision domain Hub does not create any table SWITCH Generally Switch is a Layer 2/ Layer 3 Device Switch is a more intelligent device Switch reads the frame Switch provides conditional broadcasting in the network we can configure Switch In Switch the rate of data transmission is fast Switch is a full duplex device the rate of data transmission is not divided in Switch Switch provide packet filtering in the network Switch is a single broadcast domain (By default) Switch is a separate collision domain ...