1. state the difference between ethernet and atm. 2. how does switch differs from hub ? 3. given the following ip addresses (in hexadecimal)identify ; a) the class, b) the network id (both in hex and binary), c) the host id (both in hex and binary), d) write each address in dotted decimal notation. 1. bc145f3a 2. 765e9a8d 3. c8483f95 4. 5d3a297e 5. 957b357e 6. d976827b 7. 394e839a 8. c7562dcf 9. 8cdfcb7a 4. exactly how many class a, b, and c networks can exist? exactly how many hosts can a network in each class have? how many possible addresses are possible in each class? how many ip addresses are available overall?

Let r be a robotic arm with a fixed base and seven links. the last joint of r is a prismatic joint, the other ones are revolute joints. give a set of parameters that determines a placement of r. what is the dimension of the configuration space resulting from your choice of parameters?

Given a link with a maximum transmission rate of 32.8 mbps. only two computers, x and y, wish to transmit starting at time t = 0 seconds. computer x sends filex (4 mib) and computer y sends filey (244 kib), both starting at time t = 0. statistical multiplexing is used, with details as follows packet payload size = 1000 bytes packet header size = 24 bytes (overhead) ignore processing and queueing delays assume partial packets (packets consisting of less than 1000 bytes of data) are padded so that they are the same size as full packets. assume continuous alternating-packet transmission. computer x gets the transmission medium first. at what time (t = ? ) would filey finish transmitting? give answer in milliseconds, without units, and round to one decimal places (e. g. for an answer of 0.013777 seconds you would enter "13.8" without the quotes)

22. sata3 allows for data transfer rates of 600 mb/s. explain why you would likely not be able to copy data from one hard drive to another at anywhere close to this speed. also, what could be upgraded on the computer to achieve transfer speeds closer to 600 mb/s