Unit 2: Computer Network: Networking Devices

(Note: at the 24:16 sec to 24.31 in the explanation , I have said “while receiving the respond router C to router B, then router B to router B, then router B only know ..” . Here it is actually , at last, router B to router A. Slip of the tongue , I have said router B to router B. but I must have told, like ROUTER B TO ROUTER A. AND ROUTER A ONLY KNOWS who actually initiated the request), I noticed that I have said it without noticing it properly. so I have corrected here through this)