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18 Cards in this Set
- Front
- Back
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Moore's law
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Computing power doubles every 18 months
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types of software
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Application software (e.g., Word)
Systems software (e.g., Linux, Windows) Programming software (e.g., Java IDE) |
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(ISP) Internet Service Provider
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a company which offers their customers access to the Internet
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(LAN) Local area network
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a computer network covering a small physical area
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(POP) Point of presence
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a place for local users to access a network
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Network Access Point (NAP)
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places where large networks interconnect
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(IP) Internet protocol
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a language that computers use to deliver packets from the source host to the destination host solely based on their addresses
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Transmission Control Protocol (TCP),
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defines how data are transmitted
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IP Address
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is a unique number that identifies a machine on the Internet.
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Domain Name System (DNS)
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maps text domain names to IP addresses automatically (e.g., from www.howstuffworks.com to 70.42.251.42).
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The machines that provide services to other machines or fulfill requests from other machines are called ____________ (e.g., Amazon and moodle). The machines that are used to submit these requests are called _____________ (e.g., your desktop or laptop).
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servers
clients |
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Web Services
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Software systems designed to support interoperable machine-to-machine interaction over a network
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Web Services
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Software systems designed to support interoperable machine-to-machine interaction over a network
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Service-Oriented Architecture
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A strategy that builds all the software assets in the company using the service-oriented programming methodology
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Advantages of SOA
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Better alignment with the business
A better way to sell architecture to the business (and IT) |
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Cloud Computing
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Any situation in which computing is done in a remote location (out in the clouds) rather than on your desktop or portable computing devices
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Benefits of Saas
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1 Saves the large upfront costs of buying software (and added cost for IT staff)
2 Variable operating expenses to mitigate financial risks in IT investment 3 Easy to scale (vendors are responsible for meeting demand fluctuations) 4 Better quality (vendors handle backups, upgrades and bug fixes, and security) 5 Low cost of distribution w/o middleman |
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Risks of Saas
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1 Heavy dependence upon vendors
2 Startup vendors are unlikely to survive 3 Forced to adopting new versions (unforeseen training costs and errors) 4 Reliance on network connections 5 Critical data assets outside of firm 6 Less flexible with configuration and limited features compared to on-premise |
