Unit 3 Networks Flashcards
What does WAN mean?
Wide Area Network
What does LAN mean?
Local Area Network
What are some uses of WANs
To connect two geographical locations via a network.
What organisations or companies may use WANs
Schools/Universities, large companies, governments etc.
What are packets?
A section/part of data will be broken up and be sent from the server to the recipient.
What do packets contain?
It contains: the IP address (recipient and sender), the sequence (order), the total number of packets and error checking data.
What happens to missing/corrupt packets?
When the recipient computer finds a missing or corrupt packet, they are to be requested and resent.
How do packets move around the internet?
They move from node to node until they reach the recipient. (They do not all follow the same route)
What is a DNS?
It is a Domain Name System made up of domain names.
What is a domain name?
Domain names are used to refer to an IP address.
Why are domain names more preferable than IP addresses
They are easier to remember for humans than numbers (IP).
What is a NIC?
It is a network interface card.
What is the purpose of a NIC?
It allows your computer to be able to connect to a network.
What is a MAC address?
Media Access Control address is assigned to each NIC.
What is the purpose of a MAC address?
The MAC address is used to identify where the data is going to be sent to next.
