Networks and Topologies Flashcards
What is LAN?
LAN is local Area Network which is used to connect devices in a single building or location.
What is WAN?
WAN is Wide Area Network, which is used to connect devices over a large geographical area.
What are the factors that affect the performance of a network?
Number of Users on the network
Bandwidth of the transmission medium
Network Latency
What is Bandwidth?
Bandwidth is the maximum rate of data transfer across a given path.
What is Network Latency?
Network latency, sometimes called lag, is the term used to describe delays in communication over a network
What is a client-server network?
It is where the clients access resources and services from a central computer.
What is a peer-to-peer network?
In peer-to-peer, all devices are equal and data can be shared directly between them.
What is a HUB?
A hub broadcasts data to every computer connected to it, or connected by ethernet.
What is a WAP?
A WAP is a Wireless Access Point, which allows devices to connect to the Wi-Fi wirelessly.
What is a switch?
A switch connects a device to a LAN. Data gets sent through the switch in order to reach it’s final destination.
What is a router?
Routers transmit data between two different networks.
What is a NIC?
It is a network interface controller with allows a device to connect to the internet.
What is a DNS?
A Domain Name System is used to identify reachable computer through the internet or another internet protocol.
What is Hosting?
Hosting is when a business uses its servers to store files of another organisation.
What is the Cloud?
The cloud uses the internet to store files and applications.
What are the advantages of the cloud?
Users can access files from any connected device.
No need to buy expensive hardware.
What are the disadvantages of the cloud?
Internet Connection required.
Host has to carry out security backups.
Unclear who has ownership of the cloud data.
What are webservers?
It is a computer software and appropriate hardware which accepts HTTP OR HTTPS requests.
