ARPANETadvanced research projects agency network

developed by US Dept of Defense during the Cold War, was the world’s first operational packet

switching network, and predecessor of the internet

1.Hard Bounce- failed delivery of an email due to a permanent reason like a non existent address

Soft Bounce- an email that gets as far as the recipients mail server but is bounced back undelivered before it gets to the intended recipient. This might occur because the recipient’s mail box is full.

Spamunwanted and unsolicited email

advertisements or messages

Internet- an electronic communications network that connects computer networks

around the world

POPPOP is a standard protocol used by email clients to retrieve mail from servers.

PhishingPhishing is the process of attempting to get sensitive information from a user such as credit cards or passwords. Phishers usually use sites similar looking to MySpace and other such websites for this.

Encryption and DecryptionEncryption is the process of scrambling a message, to make it more secure while it crosses the internet. Decryption is when the message is unscrambled to make it readable for the receiver. Encryption makes it much less likely your sensitive information will be stolen or intercepted.

NetiquetteNetiquette is using etiquette on the internet such as NOT SHOUTING and scrolling.

Router

A Router is a networking device whose software and hardware are usually designed to the tasks of routing and forwarding information. It is usually used on the internet.