05 Internet

Question 1

Why is an IP-address built up of the range of 0-255?

Answer 1

• four number seperated by dots
• each number 0-255 (256 different possibilities)
• 2^8 = 256
• in total 2^32 possibilities

Question 2

What were if IP addresses did not exist?

Answer 2

• all kind of communication via internet not possible
• bits/bytes transferred via IP from computer to computer

Question 3

Difference IP and Domain-address?

Answer 3

• usually one IP connected to one internet address (or vice versa)
• sometimes two domain can be connected to the same IP, e.g. when a company is internationally searchable (de.com)
• fh-aachen, ilias, qis -> are three domains on the same hardware

Question 4

What would be a situation where severl domain addresses are assigned to one IP-address?

Answer 4

• when many websites are hosted on the same server and share the same IP address
• e.g. ilias, fh-aachen abd campus office are three domain on the same hardware
• e.g. when you conntect 1000 domains to 20 computers because everyone in your company wants an own domain

Question 5

What would be a situation where one domain address is assigned to several IP addresses?

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Answer 5

• as a backup in case one goes down
• when you want to have higher performance, e.g. google, many people using it

Question 6

What are the advantages of layered architecture?

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Answer 6

• you can add more layers if theres a problem in the other
• if certain parts are faced with problems, the others arent affected
• independence between layers, easier to modify each one
• e.g. applications: you can just put it “on top” for others to use it, enterprise arcitecture or operating systems
• scalability!! - adding or removinf without affecting

Question 7

What is scalable?

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Answer 7

• sth. that is upgradable, has potential to grow
• ability of a system to increase papacity as needed to meet growinng demands
• e.g. FH aachen: internationalization, campus expansion, research
• exceeded: data loss, security risks
• under cut: wasted resources (hardware software), reduced efficiency, increaseed costs

Question 8

What are the advantages and disadvantages of distributed development?

Answer 8

• access to remote resources
• increased flexibility (adapting to needs, responding to opportunities independently)

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Question 9

Perfect Competition and Internet

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Answer 9

• increased market accessibility - wider reach on a global market, increases competition
• reduced barriers to entry
• improved transparancy (easily get info about competitiors)
• lower transcation costs bc efficient exchange of goods and services, less costs to search for these goods and services