Chapter1 Flashcards
(36 cards)
What is the internet?
The internet is a worldwide collection of interconnected networks (internetwork) that work toeghter to exchange information using common standards.
Who owns the internet?
The internet is not owned by any individual or group; it is a global collection of networks working together.
What is a small home network?
A small home network connects a few computers to each other and the internet.
What is a SOHO network?
A Small Office/Home Office (SOHO) network allows home or remote office computers to connect to a corporate network or shared resources.
How do medium-to-large networks differ from small networks?
Medium-to-large networks, such as those in corporations or schools, may have multiple locations and hundreds or thousands of interconnected devices.
What is the internet in terms of network connectivity?
The internet is a network of networks that connects hundreds of millions of computers worldwide.
What are some common types of mobile devices?
Smartphones, tablets, smartwatches, and wearable computers (e.g., Google Glass).
How do smartphones integrate multiple functions?
They combine features like telephony, GPS, media playback, internet access, and touch screen computing.
How do smartwatches enhance connectivity?
They connect to smartphones for alerts, messages, and health tracking (e.g., heart rate monitoring, step counting).
What is an example of a wearable computer?
Google Glass, which provides information on a tiny screen like a fighter pilot’s Head-Up Display (HUD).
What are connected home devices?
Devices that can be monitored and controlled remotely via the internet, such as security systems, smart appliances, and entertainment systems.
Give examples of connected home appliances.
Refrigerators, ovens, dishwashers, and smart TVs.
How do smart TVs use internet connectivity?
They stream content without requiring a TV service provider’s equipment.
How do gaming consoles use network connections?
They connect to the internet for game downloads and online multiplayer gaming.
How do modern cars use the internet?
Smart cars connect to the internet for navigation, media streaming, and destination information.
What is RFID technology?
Radio Frequency Identification (RFID) uses tags placed on objects to track and monitor conditions.
How do connected sensors function in various environments?
They provide real-time data on temperature, humidity, wind speed, pressure, and soil moisture.
How are medical devices connected to networks?
Devices like pacemakers, insulin pumps, and hospital monitors provide direct feedback or alerts based on vital signs.
What are the three types of personal data?
Volunteered data – Explicitly shared by individuals (e.g., social media profiles, photos, text, videos).
Observed data – Captured by recording actions (e.g., location tracking on cell phones).
Inferred data – taken from analysis of volunteered or observed data (e.g., credit score).
What is a bit?
A bit (binary digit) is the smallest unit of data in a computer and can have a value of 0 or 1.
How many bits are in a byte?
8 bits make up 1 byte.
What is ASCII used for?
ASCII (American Standard Code for Information Interchange) is a character encoding standard where each character is represented by an 8-bit binary code.
What are the three common methods of data transmission?
Electrical signals – Use electrical pulses on copper wire.
Optical signals – Convert electrical signals into light pulses (fiber-optic cable).
Wireless signals – Use infrared, microwave, or radio waves.
What is bandwidth?
Bandwidth is the maximum amount of data that can be transmitted over a network in a given time, measured in bits per second.
