3.1.1 - Identify different types of networks. Flashcards
What is a computer network?
A computer network is a group of computer systems and other computing hardware linked together through communication channels to facilitate communication and resource-sharing among users.
What is a LAN?
A LAN (Local Area Network) is a network that covers a small geographical location, usually within the same premises, and is based around the ethernet protocol for exchanging data.
What is a VLAN?
A VLAN (Virtual Local Area Network) is a logical group of workstations, servers, and network devices that appear to be on the same LAN despite their geographical distribution, allowing for scalable and secure communication.
What are the differences between LANs and VLANs?
VLANs offer better performance, flexibility, and safety, whereas LANs are dependent on physical topology. VLANs are easier to partition and allow virtual workgroup formation, but management can be complex.
What is a WAN?
A WAN (Wide Area Network) covers a large geographical location and leases equipment from external providers to build the network. The Internet is the largest WAN.
What is a SAN?
A SAN (Storage Area Network) is a secure high-speed data transfer network that provides access to consolidated block-level storage, making storage devices accessible to multiple servers.
What is a WLAN?
A WLAN (Wireless Area Network) uses high-frequency radio waves to connect devices wirelessly, allowing users to move within the coverage area while maintaining network connectivity.
What is the Internet?
The Internet is a globally connected network system that uses TCP/IP protocols to transmit data, connecting private, public, business, academic, and government networks via wired, wireless, and fibre-optic technologies.
What is the difference between the Internet and the World Wide Web (WWW)?
The Internet is the hardware and infrastructure, while the WWW is a service communicated over the Internet.
What is an intranet?
An intranet is a local or restricted communications network, typically a private network created using World Wide Web software.
What is an extranet?
An extranet is a controlled private network allowing select users, such as customers or partners, to gain information without access to the organisation’s entire network, often via a login page with authentication.
What is a VPN?
A VPN (Virtual Private Network) is an encrypted connection that allows devices to securely access resources remotely, reducing the risk of interception.
What is a PAN?
A PAN (Personal Area Network) is a network over a small area, often using Bluetooth or USB technology. Devices such as wireless headsets or smartphones communicate over a PAN.
What is P2P (Peer-to-Peer)?
P2P (Peer-to-Peer) is a network model where computers or devices exchange files directly with each other without a centralised server.
