Flashcards in Technical Implementation(Networking) Deck (30)
State the definition of a 'Network'
A network is two or more computers connected together by cables or wirelessly
What is Connectivity?
Connectivity is how a connection is made and maintained between two computers in a network
State some Advantages and Disadvantages of Cloud System
- Automatic Backup, Multi Device Access, Can access data anywhere with connection
- No control over security measures, may lose legal rights to original material
A theatre company is looking to start storing their data on their shows on the cloud. Why should they choose to go for the private cloud instead of the public?
- More secure, only accessible by members of company
- More customisable to companies needs compared to public
What is a 'Hybrid Cloud'
A hybrid cloud is the combination of a public and a private cloud
Give an example of where a company would use a hybrid cloud
A hybrid cloud would be used when a company wants to keep personal data secure (on the private cloud) but also give employees access to resources wherever they are(on the public cloud)
Describe an example of a cloud based service
Data Storage- allows users to upload data and access data from internet connected devices
Mail Service- Users log on to the internet to access their emails via the browser
Software Updates- Ability to access most up to date version of apps via the cloud
Describe an advantage and a disadvantage of cloud based mail servers
Advantage - Multi device access to emails
Disadvantage - Increased Bandwidth Consumption
Describe an advantage and a disadvantage of cloud based data storage services
Advantage - Automatic backup service
Disadvantage - Large fees for companies due to 'pay per capacity'
Give an example of a cloud based data storage company
Describe an advantage of cloud based software updates
- Apps are always compatible with the cloud
What does a web hosting service allow users to do?
Allows users to make their website available over the internet
What does ISP stand for?
Internet Service Provider
What is an advantage of websites like wix.com or 1and1.com (web hosting websites)
Allow users to put their website out there without having the knowledge of HTML/CSS/JS
What are the three main types of web hosting?
Describe freeware web hosting
Limited service offered by some companies which allow you to display your website for free. Often the website will include advertising for other products/companies.
Describe shared website hosting
Website is placed on a web server alongside many other websites. Sharing of RAM and processor resources.
Describe Dedicated Website Hosting
Each user receives their own web server and has full control over it, the best type of web hosting
Describe some disadvantages of having your own web server on for example a raspberry pi
- Machine has to be on 24/7
- Incur bandwidth charges if large amount of traffic
Describe some current trends in networking and connectivity
-broadband in majority of UK households
-"virtually all" of UK will have 4G connection by end of the year
Internet Connected Home appliances
-Home applications connected to internet
-Communication between devices
-Example: Samsung Family Hub Fridge
-Features: TV mirroring, in fridge camera, message board, daily report
Explain why a switch is more efficient in a network than a hub
Hub - shares all bandwidth, broadcast messages to all of the nodes
Switch - allocate share of bandwidth, full bandwidth to individual nodes, point to point connection with nodes
Explain the function of a router
A router connects nodes in a network and lets messages flow between them. It ensures that the messages get to where they need to go and chooses the best route to get to location of node.
What is a Network Interface Card(NIC)?
A NIC is a card that contains the electronic circuitry to allow a computer to connect to a network by converting the data from the device into a form transmittable over the network.
Describe what a UTP(Unshielded Twisted Pair) consists of and where it is most commonly found?
A UTP consists of pairs of copper wires which carry electrical binary signals. They are most commonly found in LAN setups.
Describe what fibre optic cables are and what they are commonly used for
Fibre optic cables consists of a central core which carries pulsed laser beam lights. They are commonly used to connect together networking infrastructure.
Describe Coaxial Wires and what they are commonly used for
Coaxial wires are single copper conducting wires with shielding braided copper
They are commonly used by telecommunication companies to provide services to homes
Describe an advantage and a disadvantage of Wireless Networks
- Not tied down to specific location
- No trailing wires, so safer
- Interference can occur
- Slower data transmission
State an example of where a bluetooth system is used
Car Hand-free systems
Describe how bluetooth allows connection between computers and peripherals
Using tiny radio frequency transmittors