The Internet Flashcards

1
Q

what is the internet

A

The Internet is a global network of networks

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2
Q

what is the WWW

A

The World Wide Web is a collection of information which is accessed via the internet

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3
Q

what type of network is the internet

A

a WAN

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4
Q

what is intranet

A

a private network that only gives users of that organisation access to the data

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5
Q

what is the extranet

A

a public network that can be accessed by an organisation and external users such as customers

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6
Q

what is an example of extranet

A

asn eccomerse site

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7
Q

what is an example of intranet

A

a school network

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8
Q

what is DNS

A

a Domain name server is a server that holds the names and IP addresses of websites

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9
Q

what are the steps for the DNS process

A
  • user enters the domain name into the browser
  • the device contacts the DNS to find the domain name
  • if the server returns the IP address to the device
  • the device contacts the website using the IP Address
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10
Q

what happens if a DNS server does not have a domain name

A

the client will try another server

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11
Q

what is meant by hosting

A

a web hosting service is a provider that hosts clients websites through their own server

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12
Q

why is hosting used (3 reasons)

A
  • they offer facilities to create and maintain websites
  • manages security updates
  • cheaper than buying all the equipment
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13
Q

what are 4 pros of cloud computing

A

lower set-up costs
can add more capacity over time
files can accessed from anywhere
encourages collaboration
data is backed up automatically

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13
Q

what are 3 cons of cloud computing

A

Internet connection required
technical issues can cause downtime
security risks
increased cost when more storage is required

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14
Q

what is an in-house server

A

a computer system that is managed and maintained on the premises, as opposed to being hosted by a third-party service provider

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15
Q

give 3 examples of organisations that may use in-house servers

A

large corporations
government agencies
small/medium-sized businesses

16
Q

why might large corporations use in-house servers

A

as they handle large amounts of data

17
Q

why might government agencies use in-house servers

A

because they handle sensitive information that requires strict control

18
Q

why might small businesses use in-house servers

A

they might require specialised software that is not available in cloud-based solutions

19
Q

what are 4 pros of in-house servers

A
  • complete control and ownership of data
  • can be customised to meet needs of businesses
  • faster access to data as it is located on-site
  • lower long-term costs
20
Q

what are 3 cons of in-house servers

A
  • high up-front costs
  • require maintenance and upgrades
  • limited scalability