Probabilistic Packet Marking is used in a network. Node B received 20 packets with the same source IP address, which is 10.3.2.30. Among them, 11 packets have IP address 10.0.2.24 in the marking field, 5 packets have IP 64.3.0.18 in that field, and 4 packets have no information there. Can you tell whether they are spoofed packets? If among them, ten packets with 12.0.2.24, six packets with 8.9.0.1, three packets with 1.2.3.4, and one packet with 33.24.11.7, can you tell whether they are spoofed packets? Bob thinks that using a lower overwrite probability, say, 30% instead of 50%, this technique can support IP Traceback with more intermediate routers. Do you agree with him? Why?

Assume that two parallel arrays have been declared and initialized: healthoption an array of type char that contains letter codes for different healthcare options and annual cost an array of type int. the i-th element of annual cost indicates the annual cost of the i-th element of healthoption. in addition, there is an char variable, best2.write the code necessary to assign to best2 the health option with the lower annual cost, considering only the first two healthcare options. thus, if the values of healthoption are 'b', 'q', 'w', 'z' and the values of annualcost are 8430, 9400, 7050, 6400 your code would assign 'b' to best2 because 8430 is less than 9400 and is associated with 'b' in the parallel array. (we ignore 'w' and 'z' because we are considering only the first two options.)