Section 5 - Fundamentals Of Computer Networks Flashcards
What is the internet?
A large collection of inter connected networks.
What are wide area networks?
A private network for organisations
What is a ip address?
A unique address for every device that can connect to the internet
What is a router?
A router is designed to route data packets across a wide area network such as the internet.
What is a network interface card?
A network interface card (nic) is required to connect any networks-enabled device.
What are 3 risks of a wireless network?
Criminal activity, bandwidth stealing and confidentiality
What is a local area network?
A local area network (lan) usually covers a relatively small geographical area. It consists of a collection of computers and peripheral devices.
What are personal area networks?
A personal area network is a computer network used for data transmission among other devices such as computers, cell phones or laptop.
What is encryptions primarily used for?
Encryptions are primarily used for data protection and the prevention of data being hacked or accessed illegally
What is a firewall?
A firewall is designed to prevent unwanted internet traffic gaining access to the lan
What are protocols?
If one computer transmits a stream of binary to another computer, the receiving end needs to know what the rules are.
What is tcp?
TCP is a standard that defines how messages are broken up into packets and reassembled at the destination.
What is udp?
Udp uses a simple connection less transmission model. With udp, computer applications can send messages referred to as data grams to other hosts on an ip network
What is http?
Http is used for accessing and receiving web pages in the form of html files on the internet
What is https?
Serves the same purpose as http, but encrypts the information so that it cannot be understood if it is hacked
