Section 2 Flashcards
What is a network?
A network is 2+ computing devices that are connected in order to share data.
What are converged networks?
Networks that serve multiple purposes.
What is a client?
A client is any device used by an end-user to connect to a network.
What is a server?
A server is a device that provides resources to the rest of the network.
What is a hub?
A hub is an older technology that connects network devices together.
What is a WAP? And what does it stand for?
WAP stands for a Wireless Access Point.
A WAP is a device that allows wireless devices to connect to a wired network.
What is a switch?
A switch is a device that connects network devices together to share information and talk to each-other.
What is a Router?
A router is a device that connects networks to each other, and forwards traffic to and from a network.
What is network media? Give examples
Network media refers to the communication channels used to interconnect nodes on a network.
Examples include copper cable, fibre optic cables, wireless transmission
What does WAN stand for?
What is a WAN used for?
WAN stands for a Wide Area Network.
A WAN connects an internal network to an external one. It has worldwide coverage.
What is the Client/Server Model?
Advantages / Disadvantages
A resource model that uses a dedicated server to provide access to resources on a network.
Advantages: Easier administration/backup, better scalability, easier management.
Disadvantages: Higher cost, requires dedicated resources.
What is the Peer-To-Peer model?
Advantages / Disadvantages
A resource model where peers share resources directly with each other.
Advantages: low cost, no dedicated resources.
Disadvantages: inefficient for larger networks, administration and backup is difficult.
What does PAN stand for?
What is a PAN? Give Example
PAN stands for Personal Area Network.
A PAN is a type of network that covers a very small area. (Example Bluetooth)
What does LAN stand for?
What is a LAN? (Give example)
LAN stands for a Local Area Network.
A LAN is a network that covers a limited distance (for example a house)
What does CAN Stand for?
What is a CAN? (Example)
CAN stands for Campus Area Network.
It is a type of network that connects LANs across a certain area. (Example
University)
What does MAN stand for?
What is a MAN? Examples
MAN stands for Metropolitan Area Network.
It is a network that spans the size of a metropolitan area (example City)
What does a WAN stand for?
What is a WAN (examples)
WAN stands for a Wide Area Network.
A WAN is a network that has worldwide coverage.
What is the Ethernet Standard?
IEEE 802.3
What is the Wi-Fi standard?
IEEE 802.11
Describe a Bus network topology.
Bud topology uses a single cable, each device taps into the main cable.
Describe a Ring network topology.
Ring topology uses a cable running in a circular loop, each device connects to the ring and data travels in a single direction.
What is FDDI ring?
For ring topology: uses two counter rotating rings, used for redundancy.
Describe Star network topology.
The most popular LAN topology. Devices connect to a single point. If the central device fails the whole network fails.
Describe Hub-and-Spoke network Topology.
Similar to star topology but with WAN links instead of LAN connectors. Used for connecting multiple sites.
Describe Full-Mesh network topology.
Full-mesh is where every node is interconnected. It is suitable for small networks and allows optimal routing.
Describe Partial-Mesh network topology.
It is a hybrid of full-mesh and hub-and-spoke topologies. Allows for optimal routing between some sites. Better refinance than single hub-and-spoke.
What is infrastructure mode?
A wireless network topology that uses a Wireless Access Point as the centralised point.
What is Ad-Hoc mode?
A wireless decentralised network topology that uses peer-to-peer. It does not require router or access point.
Describe Wireless Mesh Topology.
A wireless topology that involves interconnection of different nodes, devices or radios. Creates redundant and reliable connections.
What does RFID stand for?
Describe it
Stands for Radio Frequency Identification.
It is a technology that uses electromagnetic fields to read data stored in embedded tags.
What does NFC stand for?
What is NFC?
Stands for Near Field Communication.
It is a technology that allows two devices to communicate within a very short range.
How does infrared technology work? (Example)
Operates in line of sight. Example TV remote
What is Z-Wave?
What is it used for
It is a type of technology that provides short range, low latency data transfer.
Mainly used for home automation (lights off etc)
What is ANT+?
It is a technology used for the collection and transfer of sensory data.
