DNS, IP Addresses, Web hosting and The Cloud Flashcards
What does ISP stand for
Internet Service Provider
What is an ISP
It is a company that provides access to the internet for businesses and individuals
Give some examples of ISP
Sky
Virgin Media
Plus Net
BT Infinity
What does URL stand for
Uniform Resource Locator
What is the URL
It is the unique web address for every webpage on the internet
What is the purpose of an IP address
The purpose of an IP address is to get data delivered directly to your computer rather than someone elses’. This is done by giving every single device a unique address
IP addresses can either be…
Static or Dynamic
What is a static IP
It is where the IP address stays permanent and never changes
What is a dynamic IP
Dynamic IP addresses are temporary and will change every time you join a network and are assigned to the device every time it accesses the internet
What does DNS stand for
Domain Name System
What is the purpose of a DNS
It is to translate a web address into the correct IP address for the server or service that you have requested
What are the advantages of a DNS
- You don’t need to remember IP addresses of websites
- As long as you are connected to a DNS you can access any website for which there is a stored IP address
What is a web-site
It is a site made up of one ore more web pages along with any images or other media
What is Local Hosting
Where you host a website on your home PC
How would you set up local hosting
You would need to set up your PC as a web server and allow others to connect to it and access the web files that you store
What are the issues with local hosting
- Bandwidth - Might not be able to provide strong connection for everyone
- The PC will be always on -can’t use sleep mode
- Firewall - Easy to hack the PC
- Dynamic IP - The IP would keep changing this mean there would be no permanent IP to be used to connect to the server
What is external hosting
It is where you pay a web hosting company to host your website on one of their servers
What are the different types of external hosting
Shared web hosting - this is where many sites are hosted on the same web server
Dedicated server - Where the website is hosted on its own server
Virtual Server - This is a powerful server that runs special software to create many ‘virtual servers’ within itself
What does the ‘cloud’ do’
refers to a range of software and services that run on the internet rather than your PC
Give some example of cloud services
- Online hosting of web page data
- Online file and media storage (GoogleDrive)
- Streaming services of films and other media (Spotify, Netflix or Amazon)
- Online applications (Office 365, Google Docs)
What are the advantages of Cloud Computing
- You can access your data from any device with an internet connection
- Documents can be worked on simultaneously by different people
- You can store large files online and reduce the amount of storage space needed on your home device
- Your work is automatically backed up
What are the disadvantages of Cloud Computing
- Must require an internet connection
- Must remember the login details
- Most of the services cost money
- Risk of online hackers
