It depends on how old you are to start. Since Proxima Centauri is 4.2 light years away, it would take 8.4 years to send a message an receive a reply.
routers
routers
neurotransmitters
A tube worm retreating from a predator.
the three elements of communication process are: -sender is the one who is sending the message. -receiver one who is receiving the message. -feedback to what are the aftereffects of your message.
the three elements of communication process are: -sender is the one who is sending the message. -receiver one who is receiving the message. -feedback to what are the aftereffects of your message.
It can as long as you cancel it while it's sending. After it's sent, then it's impossible to stop it from getting to the person receiving it.
Yes. Noise can be anything distracting the sender or receiver from sending or receiving the message.
E-mail enables the sending and receiving of files.
It means the name of whoever is receiving whatever it is that you are sending.
MS is multiple sclerosis, a disease that can be deadly.
You can't deny receiving or not receiving a message with non-repudiation; it only has to do with who the sender of the message was. Because there is a mathematical relationship between public and private keys, if a sender uses their private key to send a message and the receiver uses the sender's public key to read it, then non-repudiation says that the sender had to have sent that message, and no one else (because no one else has the key pair).