When an HTTP GET message contains the IF-MODIFIED-SINCE field, what is the function of this field?

A sine wave in the_domain can be represented by one single spike in the domain ?

UDP PROGRAM The client sends a message “HI” to the server Once the server received the full message, sever responds with “Hello, What’s your name?” When the client receives the full message from the server, Client should be able to enter the name via the terminal and send the name to the server. When the server received the full message, server responds with “Hello 'name', Welcome To The Server”. “name” should be the one that is received form the client.

write a custom Snort rule to handle Inbound and Outbound HTTP traffic on the Private  (Host-Only) network. Upload a screen shot of the Snort console displaying the alerts.   In this exercise, we are going to create two Snort monitoring rules that will be used to alert on HTTPnetwork traffic for both Inbound and Outbound traffic. Remember, Inbound rules are those rules whosedestination is to your internal network (HOME_NET), outbound rules are directed out of your internalnetwork (!HOME_NET). When you use “any” there is no distinction on whether a rule is Inbound orOutbound. When using Inbound/Outbound to describe local traffic, traffic generated on the samenetwork (as in this lab on VMnet-1), the Inbound reference is to your client system that is running snortthe Outbound reference is to the HTTP server.You should now understand a little bit about custom rules, so given the following rule:alert tcp any any -> any 80 (msg:"TCP HTTP Testing Rule"; sid:1000004;)You should be able to…

How can block cyphers and stream cyphers share their keys, and why should they be distinct?

write a  Node/Express web server that supports routing via endpoint /cookie. Declare a variable named a and initialize it to 10 seconds.In the callback of route /cookie:Check to see if the browser sends a cookie named startIf cookie start received by the server, increment value in variable a by 2 seconds.Creates and sends a cookie that expires after the number of seconds specified in the variable a.The cookie is to be named startwith assigned value of 450.Import package cookie-parser for cookie handling