Networks- The Internet

Question 1

What is the Internet?

Answer 1

The network of networks- a WAN that connects devices from all over the world.

Question 2

What protocol is the Internet based around?

Answer 2

TCP/IP

Question 3

What is the World Wide Web (www)?

Answer 3

Collection of websites hosted on web servers ACCESSED THROUGH HTTP PROTOCOL

Question 4

What are URLs?

Answer 4

Addresses used to access web server and resources.

Question 5

What is https: an example of?

Answer 5

A protocol

Question 6

What is www.cgpbooks.co.uk an example of

Answer 6

A domain name linked to an IP address.

Question 7

What is secondarybooks/gcse/computer-science an example off?

Answer 7

A path to a specific page which may contain a query to a web server

Question 8

What does a Domain Name Server do (DNS) do?

Answer 8

It translates WEBSITES domain name into IP address

Question 9

Why don’t you need to remember IP addresses to access websites?

Answer 9

Because the Internet has networks of Domain names so you can use domain names instead.

Question 10

What is Hosting?

Answer 10

Businesses use servers to store files of another organisation.

Question 11

What is the traditional use of hosting on the Internet?

Answer 11

The hosting of web servers

Question 12

What is ‘Cloud Computing’/ ‘the cloud’?

Answer 12

Where businesses use servers to offer a greater range of services- clients access data storage, SOFTWARE and processing power.

Question 13

How does ‘Cloud Computing’/ ‘the cloud’ act?

Answer 13

Like an extension of TRADITIONAL client server network where USER FILES are stored centrally on a network server.

Question 14

How do businesses profit of the cloud?

Answer 14

Often offer subscription fee to access cloud services.

but some providers offer limited service for free

Question 15

How do cloud apps work?

Answer 15

Cloud apps can be run on a remote server WHICH MEANS USER CAN ACCESS LARGE POWERFUL APPS WITH A COMPUTER THAT HAS LESS EXPENSIVE HARDWARE

Question 16

What does the user having more processing power mean?

Answer 16

User can perform more memory intensive TASKS than they could on a single computer

Question 17

Pros of the Cloud

Answer 17

• USERS CAN ACCESS FILES AND APPS FROM ANY CONNECTED DEVICE
• EASY TO INCREASE HOW MUCH STORAGE IS AVAILABLE
NO NEED TO BUY EXPENSIVE HARDWARE TO STORE DATA AND RUN COMPLEX APPLICATIONS
• There is no need to pay IT staff to manage hardware
• Cloud host provide security and backup
• Cloud software updated automatically

Question 18

Cons of the Cloud

Answer 18

• YOU NEED A CONECTION TO THE INTERNET TO ACCESS FILES AND APPS
• DEPENDENT ON THE HOST FOR SECURITY AND BACK-UPS
• It is unclear who has ownership over cloud data
• Subscription fees for using cloud services may be expensive