1.3.3 Introduction To Networks Flashcards
What is a node?
A computer in a network.
What is a network?
A collection of connected nodes.
What are the advantages of a network?
-Share files
-Share hardware
-Use any computer
What are the disadvantages of a network?
-Expensive
-Needs specialists
What is a network interface card?
-Allows a node to connect to a network
-Provides a MAC Address for a node
-Sends and receives network data
What is a switch?
-Connects several devices in a network
-Connects Devices together in a LAN
-Recieves data/packets.
-Sends data/packets to the correct network device.
What is a local area network?
Devices linked in the same geographical location.
What is a wide area network?
Devices linked across a wide geographical area.
Often connected via 3rd part channels
What is a protocol?
A set of rules to govern data transmission.
Why do we use protocols?
-Computers only transmit binary
- So rules need to be set to establish what the binary means
- So data can be sent/received.
What is HTTP?
A protocol for viewing Web pages.
What is HTTPS?
A protocol for viewing web pages securely using encryption
What is FTP?
A protocol for transferring files
What is a Standard?
An agreed set of rules for creating a type of code
Why do we use standards?
-Developers want to know their code will work for users
-So need to know what user software is expecting
-A standard agrees this so developers can begin work
