What is a computer network?
Two or more computers connected to communicate and share data.
What is a protocol?
Rules devices follow to communicate successfully.
What does a network cable do?
Physically connects devices and sends data both directions.
What is a hub?
A device that connects computers and sends data to ALL devices.
What is a router?
Connects different networks and sends data between them.
What is a server?
A powerful computer that provides services or stores files.
Advantage of wired connection?
Faster and more stable.
Disadvantage of wired connection?
Not portable.
Examples of wireless connections?
WiFi, Bluetooth, 4G, 5G.
Disadvantage of wireless?
Can be slower or interrupted.
What is bandwidth?
Amount of data that moves in a certain time.
What does bps mean?
Bits per second (speed measurement).
What is buffering?
When data arrives slower than it’s being used.
What is the internet?
A worldwide network of connected computers.
What is an ISP?
A company that provides internet access.
What is a packet?
A small piece of a message sent across networks.
What is a packet header?
Info like sender IP, receiver IP, and packet number.
What is packet payload?
The actual message data.
What is an IP address?
A unique number identifying a device.
What does IP do?
Finds the destination for data.
What does TCP do?
Splits data into packets and rebuilds them correctly.
What is a digital footprint?
All information about you online.
What is metadata?
Extra hidden information about data.
What is privacy?
Controlling who sees your information.
