Lecture 3: Technological Foundations and Modern IT Infra Flashcards Preview

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Flashcards in Lecture 3: Technological Foundations and Modern IT Infra Deck (10):
1

What is Moore's Law?

- Chip performance per dollar doubles roughly every 18 months
- The complexity for minimum component costs has increased at a rate of roughly a factor of two per year
- Adapted to predict doubling every two years staring 1980
- Currently slowed down to doubling every 2.5 years

2

What are three chip based components?

- Microprocessor
- Random-access memory
- Flash or solid state drives

3

What are three mechanical (moving) components?

- Hard disk
- Fans
- Disc drives

4

What is the evolution of IT hardware?

1. Mainframe era (1959)
2. Minicomputers (1965)
3. Personal computing (1981)
4. Client-server era (1983)

5

Client server model vs Peer to Peer

- Client server model distinguish between providers and requesters
- In P2P, participants are both suppliers and consumers of resources

6

What is the internet?

A decentralized system of networks that links devices around the glob and enables data transmission among them

7

What are common application transfer protocols?

- HTTP
- SMTP
- FTP

8

What is TCP and IP

- TCP (transmission control protocol) slices data that is to be sent into packages
- IP routes these packages to the target computer
- TCP at target computer checks for completeness and reassembles packages

9

What are the advantages and disadvantages or cloud computing?

Advantages
- Reduce upfront costs
- Increased flexibility for scaling

Disadvantages
- May lead to higher long term costs
- Dependence on providers
- Moving legacy systems to cloud may be costly

10

What are the different cloud computing services?

Infrastructure as a service

Platform as a service

Software as a service