In a system using Stop-and-Wait protocol link propagation velocity is 2x10^8 meters/s, length of link is 2000 meters, data rate is 100 Mb/s and Data Packet length is 100 bits. If receiver processing time is 0, and the ACK (acknowledgement) packet is negligibly small (length ~ 0), and the Retransmission Timer times out after 10 microseconds. Required:
a. Calculate the Total time for 2 packet transmissions if the first packet takes 2 transmissions to be correctly received, and the second packet takes 4 transmissions to be correctly received.
b. Sender Utilization is defined as the ratio of the time spent transmitting packets to the packet transmission cycle time. Calculate the Sender Utilization for the transmission of the second packet.

Assume the existence of a bankaccount class. define a derived class, savingsaccount that contains two instance variables: the first a double, named interestrate, and the second an integer named interesttype. the value of the interesttype variable can be 1 for simple interest and 2 for compound interest. there is also a constructor that accepts two parameters: a double that is used to initialize the interestrate variable, and a string that you may assume will contain either "simple", or "compound", and which should be used to initialize the interesttype variable appropriately. there should also be a pair of functions getinterestrate and getinteresttype that return the values of the corresponding data members (as double and int respectively).

:you areto design the controller for alight that functions both as an ordinary light and also as a motion activated light and alarm. a.if the manual switch s is on, then the light l is on. b.besides the manual switch, there is a motion detector, m1, which activatesthis light.c.if motion is detected but the light is on anyway because s is on, only then a secondoutput a, an alarm, is turned on. d.the disable switch, d, disables the motion activated light and alarmbut leaves manual control operation of the light using switch s.(i)read the problem statement and clearly identify the inputs and outputs for the circuit you are designing. (ii)create the truth table for this system; include the light, alarm, switch, disable, and the motion sensor.(iii)draw a schematic of this system.

Jamie has to enter the names, employee id’s, and income of a group of employees into a worksheet. which option will jamie use to describe the data