A, B,C are three user IP_addresses from three different networks.
GA, GB, GC are A, B, C’s routers/gateways respectively.
A, B,C want to talk to each other in a group conferencetogether at the same time.

1. Initiate communications among 3 of them
2. Transfer data among 3 of them
Describe Step by Step procedure withappropriate diagram and necessary descriptions.
You must use IPSEC protocols ( IPSec-AH, IPSec-ESP, IKE).
You must draw diagram/figure(s).

Robots with telescoping arms are sometimes used to perform tasks (e.g., welding or placing screws) where access may be difficult for other robotic types. during a test run, a robot arm is programmed to extend according to the relationship r = 3 + 0.5cos(4θ) and the arm rotates according to the relationship θ=−π4t2+πt , where r is in feet, θ is in radians, and t is in seconds. use a computer program to plot the path of tip a in x and y coordinates for 0 ≤ t ≤ 4s.

Print "usernum1 is negative." if usernum1 is less than 0. end with newline. convert usernum2 to 0 if usernum2 is greater than 10. otherwise, print "usernum2 is less than or equal to 10.". end with newline

Facial expressions and gestures are examples of messages.