1.4-2 Computing Packet Transmission Delay(1). Suppose a packet is L = 1500 bytes long (one byte = 8 bits), and link transmits at R = 1 Gbps (i.e., a link can transmit bits 1,000,000,000 bits per second).  What is the transmission delay for this packet? [Note: you can find more problems like this one here.]

With SMTP, it is possible to send multiple mail messages over the same TCP connection.

1.4-6 Computing throughput: a simple scenario. What is the maximum throughput achievable between sender and receiver in the scenario shown below?

Ch-1:P2 Chapter 1 Problem P2

Ch-1:P11 Chapter 1 Problem 11

Ch-1:P7 Chapter 1 Problem 7

Ch-1:P3 Chapter 1 Problem 3

Suppose a client sends an HTTP request message with the If-modified-since: header. Suppose the object in a server has not changed since the last time a client retrieved the object. Then the server will send a response message with the status code:

Consider the minimum time for P2P file distribution, as discussed in Section 2.6. Suppose the upload rate of the server is10 Mbps, the upload rates of all peers is 1 Mbps, and the download rates of all peers is 10 Mbps. Further suppose that there are 100 peers and the file is 100 million bits. The minimum distribution time is