DNS, IP Addresses, Web hosting and The Cloud

Question 1

What does ISP stand for

Answer 1

Internet Service Provider

Question 2

What is an ISP

Answer 2

It is a company that provides access to the internet for businesses and individuals

Question 3

Give some examples of ISP

Answer 3

Sky
Virgin Media
Plus Net
BT Infinity

Question 4

What does URL stand for

Answer 4

Uniform Resource Locator

Question 5

What is the URL

Answer 5

It is the unique web address for every webpage on the internet

Question 6

What is the purpose of an IP address

Answer 6

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

Question 7

IP addresses can either be…

Answer 7

Static or Dynamic

Question 8

What is a static IP

Answer 8

It is where the IP address stays permanent and never changes

Question 9

What is a dynamic IP

Answer 9

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

Question 10

What does DNS stand for

Answer 10

Domain Name System

Question 11

What is the purpose of a DNS

Answer 11

It is to translate a web address into the correct IP address for the server or service that you have requested

Question 12

What are the advantages of a DNS

Answer 12

• 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

Question 13

What is a web-site

Answer 13

It is a site made up of one ore more web pages along with any images or other media

Question 14

What is Local Hosting

Answer 14

Where you host a website on your home PC

Question 15

How would you set up local hosting

Answer 15

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

Question 16

What are the issues with local hosting

Answer 16

• 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

Question 17

What is external hosting

Answer 17

It is where you pay a web hosting company to host your website on one of their servers

Question 18

What are the different types of external hosting

Answer 18

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

Question 19

What does the ‘cloud’ do’

Answer 19

refers to a range of software and services that run on the internet rather than your PC

Question 20

Give some example of cloud services

Answer 20

• 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)

Question 21

What are the advantages of Cloud Computing

Answer 21

• 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

Question 22

What are the disadvantages of Cloud Computing

Answer 22

• Must require an internet connection
• Must remember the login details
• Most of the services cost money
• Risk of online hackers