Internet/ Networks Flashcards
What hardware is needs to connect to the Internet
- Modem- this device allows an individual compute to connect to the Internet via a phone line. There are two main types; dial up and broadband
- Router- this device is used to link one network to another network. A router will therefore allow all the computers in a network to have a connection to the Internet
What is HTML
HTML stands for HyperText Mark-up Language. It is important because it defines a standard that allows data (web page) to be displayed correctly on any computer that uses a web browser that conforms to the HTML standard
What is a PDF file?
PDF stands for Portable Document Format. It allows documents to be viewed and printed without the need for the original software that created them.
What is a Disaster recovery policy
A disaster recovery policy aims to reduce the risk and then minimise the impact of a natural or man-made disaster on a network or computer system.
What is a WAN
Wide Area Network. A network of computers in a large geographical area, eg within a city, county or country. the WAN may incorporate LANs
Describe the ring network topology
A peer to peer network that is connected in a ring
What is a peer to peer network?
In a peer to peer network, computers are simply linked together, they don’t have particular roles and each has equivalent responsibility and status.
Any computer on the network con load information from the hard disk of any other computer and a computer on the network can use any printer connected to the network.
What’s the difference between a router and a switch?
A router routes the data packets to all connected PCs
A switch sends the data packets to jus target the PC
What is an IP address?
It is a unique 32 bit reference number that is allocated to devices in an IP computer network
What is an AUP?
A set of rules an employee will usually sign as part of their contact which states ways in which a computer network/ system is allowed to be used.
What is a LAN?
Local area network, a network that operates over a small geographical area
What does network topology mean?
The name given to the way in which devices are physically connected in a network. There are thee main ones; ring, bus and star
What hardware is required to create a network
Each PC must have a NIC (which could be cable or wireless)
cabling is required for non-wireless networks
a router or a switch is required in some networks
a Wireless Access Point is required for wireless networks and acts like a router/switch
Describe the star network topology?
The devices are connected in a star with the central device acting as a server. This is a client-server network.
What is used to identify each device on an IP network?
The IP adress
What is archiving?
This means that the files are no longer in active use and are moved somewhere where they can still be accessed if needed. An archived file is therefore the original file, not a backup. Archived files are often compressed, therefore they take up less memory.
