Show a block diagram for a backbone-based network configuration that will allow efficient use of network resources. (Assume the top level of the diagram is the building. The second level represents departments. The lower levels are individual employees, or network drops.)Locate and read a good article that describes ATM. Compare ATM methodology with the other networking topologies that have been discussed in your text or in other IT courses. Why do you think ATM lost its attractiveness?Locate, download, and install a copy of traceroute or tracert software. Use the software to ping an IP address at least 2000 miles from your location. Do this several times and record the paths that your packets take. Assuming that you’re not unlucky enough to have all your packets use the same route, draw a diagram of the portion of the mesh network revealed by your results.

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?

Lakendra finished working on her monthly report. in looking it over, she saw that it had large blocks of white space. what steps could lakendra take to reduce the amount of white space?

Write a program that keeps asking the user for new values to be added to a list until the user enters 'exit' ('exit' should not be added to the list). these values entered by the user are added to a list we call 'initial_list'. then write a function that takes this initial_list as input and returns another list with 3 copies of every value in the initial_list. finally, inside print out all of the values in the new list. for example: input: enter value to be added to list: a enter value to be added to list: b enter value to be added to list: c enter value to be added to list: exit output: a b c a b c a b c note how 'exit' is not added to the list. also, your program needs to be able to handle any variation of 'exit' such as 'exit', 'exit' etc. and treat them all as 'exit'.