Q3-1 What Do Business Professionals Need to Know About Networks and the Internet? Flashcards
What is a computer network?
A computer network is a collection of computers that communicate with one another over transmission lines or wireless connections.
What are the four basic types of networks?
Personal Area Network (PAN) – Devices connected around a single person.
Local Area Network (LAN) – Devices connected around a single site.
Wide Area Network (WAN) – Devices connected between multiple sites.
Internet – A network of networks.
What is a Personal Area Network (PAN)?
A PAN connects devices around a single person, usually wirelessly, within about 10 meters.
An example is a wearable device like a Fitbit connected to a mobile phone.
What is a Local Area Network (LAN)?
A LAN connects computers in a single geographic location, such as a **small office or home office (SOHO). **
The number of connected devices can range from a few to several hundred, with all devices connected to a switch or router.
What is a Wide Area Network (WAN)?
A WAN connects computers at different geographic locations.
WANs allow computers in multiple locations, such as different cities or campuses, to be connected via a service provider or telecommunications vendor.
What is the Internet?
The Internet (capital “I”) is the collection of interconnected networks used for email, websites, and other online services.
A private internet within an organization is called an intranet.
What is an intranet?
An intranet is a private network that is used exclusively within an organization. It is a type of internet used internally.
What wireless network options are available for LANs?
Bluetooth – A short-range wireless communication method used for connecting devices like smartphones and keyboards.
**Wi-Fi **– A wireless technology allowing devices to connect to a LAN over distances up to 65 feet indoors.
Cellular Network – A wireless network that uses radio signals to send and receive data, connecting devices to stationary base stations.
That are the differences between Bluetooth, Wi-Fi, and Cellular networks?
Bluetooth: Transmits data over short distances using wireless communication.
Wi-Fi: Allows wireless devices to connect to a LAN.
Cellular Network: Uses radio signals to send and receive data over long distances, relying on base stations and switching centers.
What are the key characteristics of a cellular network?
A cellular network uses base stations (cell towers) to connect users to the Internet via radio signals.
It has greater range than Wi-Fi and allows for mobile communication.
What are the different generations of cellular networks?
1G: Analog transmission, 14.4 Kbps.
2G: Digital voice, 144 Kbps.
3G: Multimedia and broadband, 4 Mbps.
4G: High-speed data, 100 Mbps.
5G: IoT support and higher speeds, 2,000 Mbps.
What is an Internet Service Provider (ISP)?
An ISP provides access to the Internet and associated services. It has three key functions:
Provides a legitimate Internet address.
Serves as the gateway to the Internet, forwarding communications between the user’s computer and the Internet.
Pays for Internet access by collecting fees from customers and paying access charges.
What are the three common alternatives for connecting a LAN to the Internet?
The three alternatives for connecting a LAN to the Internet are:
DSL modem to ISP.
Cable modem to ISP.
WAN wireless connection.
What is a digital subscriber line (DSL)?
A DSL operates on the same lines as voice telephones but does not interfere with voice telephone service.
It provides Internet access over telephone lines.
What is a cable line?
A cable line is an ISP connection that uses cable television lines to provide high-speed data transmission.
Performance may vary based on the number of users sharing the line.
