When an ethernet frame arrives at a computer, the ethernet layer must hand the packet that it contains to the next higher layer to be processed. the act of finding the right higher layer to pro-cess received packets is called demultiplexing. we know that in our case the higher layer is ip. but how does the ethernet protocol know this? after all, the higher-layer could have been another protocol entirely (such as arp). we have the same issue at the ip layer – ip must be able to deter-mine that the contents of ip message is a tcp packet so that it can hand it to the tcp protocol to process. the answer is that protocols use information in their header known as a "demultiplexing key" to determine the higher layer. o true o false

Nims is applicable to all stakeholders with incident related responsibilities. true or false

Working on this program in python 3.7: a year in the modern gregorian calendar consists of 365 days. in reality, the earth takes longer to rotate around the sun. to account for the difference in time, every 4 years, a leap year takes place. a leap year is when a year has 366 days: an extra day, february 29th. the requirements for a given year to be a leap year are: 1) the year must be divisible by 42) if the year is a century year (1700, 1800, the year must be evenly divisible by 400some example leap years are 1600, 1712, and 2016.write a program that takes in a year and determines whether that year is a leap year.ex: if the input is 1712, the output is: 1712 is a leap year. ex: if the input is 1913, the output is: 1913 is not a leap year. your program must define and call the function isleapyear(useryear). the function should return true if the input year is a leap year and false otherwise.

Anetwork security application that prevents access between a private and trusted network and other untrusted networks