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  3. 1 describe circuitswitched networks and packetswitched networks under what circumstances...

Question: 1 describe circuitswitched networks and packetswitched networks under what circumstances...

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1. Describe circuit-switched networks and packet-switched networks. Under what circumstance(s) can circuit-switched networks be preferred for communication over pack switched networks? (10 points) How does a content provider network (such as Google LLC) benefit from connecting to IXPs and access networks, instead of connecting only to tier-1 ISPs? (10 points) 2. 3. Calculate the amount of time required to send 1GB of information through a 2- kilometer long link of 100Mbps bandwidth. The propagation speed along the link is 2 x 108 meters/second. Assume there is no queuing or processing delay. (10 points) 4. Suppose a network access link of 10 Mbps capacity is being shared through circuit- switching. If each user requires 150 kbps transmission bandwidth, how many users can be supported through that link? (5 points) 5. Suppose a network access link of 1 Mbps capacity is being shared among 10 users through packet-switching and each user has 20% probability of using the link at any time. Over a sampling period of 1 hour, what is the expected amount of traffic (in Gigabytes) to flow through that link? (10 points) ii) Assuming the link bandwidth is shared equally among its active users, what is the probability that each user is experiencing a bandwidth equal to or above 3A4bps 300kbps? (10 points)

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