Frames lengths (20%) In the following, explain whether there exists such frame of given header length, given full length, or explain why that does not exist. Do not just answer yes or no. When computing lengths of header or frame, we do not include the 14 bytes Ethernet header captured by Wireshark. 7. (20%) Consider IP frames. Are the following possible? Explain! (a) IP header of < 20 bytes (b) IP header of > 20 bytes (c) IP total length (excluding Ethernet header of 14 bytes or media header length) of 100, 000 bytes on any media such as FDDI. (d) IP total length (excluding Ethernet header of 14 bytes) on Ethernet LAN of 2,000 bytes. (e) IP total length of 40 bytes.

The volume v and paper surface area a of a conical paper cup are given by where r is the radius of the base of the cone and h is the height of the cone. a. by eliminating h, obtain the expression for a as a function of r and v. b. create a user-de ned function that accepts r as the only argument and computes a for a given value of v. declare v to be global within the function. c. for v ! 10 in.3 , use the function with the fminbnd function to compute the value of r that minimizes the area a. what is the corresponding value of the height h? investigate the sensitivity of the solution by plotting v versus r. how much can r vary about its optimal value before the area increases 10 percent above its minimum value?