PLEASE HELP, I'M CONFUSED Imagine an everyday scenario in which you are using the internet: downloading a file, uploading a photo, checking your email, etc. You may choose the data “type” and overall scenario according to your own preferences. Next, create a slideshow presentation of how that data moves through the seven layers of the Open Systems Interface (OSI), starting with the hardware in the Physical Layer and ending with the software of the Application Layer.

Be sure to mention specifically which of these services and protocols would be used in your scenario:

Data Link Layer: ARP, OSPF, L2TP, PPP
Network Layer: IP, ICMP, IGMP, IPsec
Transport Layer: TCP, TSL/SSL, UDP
Application Layer: DHCP, DNS, FTP, HTTP, SMTP, Telnet, IMAP.

Anyone understand this and how to do it? I'm completely clueless

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We as humans write math expression in infix notation, e.g. 5 + 2 (the operators are written in-between the operands). in a computer’s language, however, it is preferred to have the operators on the right side of the operands, i.e. 5 2 +. for more complex expressions that include parenthesis and multiple operators, a compiler has to convert the expression into postfix first and then evaluate the resulting postfix.write a program that takes an “infix” expression as input, uses stacks to convert it into postfix expression, and finally evaluates it. it must support the following operations: + - / * ^ % (example infix expression: (7 - 3) / (2 + 2)postfix expression: 7 3 - 2 2 + /result: 1guidelines: 1. you will need to use stacks in three placesa. one for the parenthesis check [char stack]b. one during infix to postfix [char stack]c. one during evaluation [int stack]for a and b above, you can use same array and same push, pop method as both ofthem are char. but for evaluation you have int stack and you might consider to createanother push pop method to handle it. maybe push_int, pop_int, etc. or find otherstrategy to utilize existing push pop method2. you can create a function for obtaining operator priority. that function should take anoperator as input and return its priority as an integer. this function will you a lot andreduce repeated code3. during evaluation you will need to convert char into integer. example for single digit: char c = '5'; int x = c - '0';

Which cultural aspect does this type of song best portray? a german polka dance