Technical Architecture Flashcards by David Godwin

What is technical architecture

Describes the systems and network components that make up a distributed system

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What components are in technical architecture

Hardware and software

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What else is considered by technical architecture?

Relationships between components
NFRs
Software configurations
Data storage configurations

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Give examples of NFRs

Reliability
Scalability
Security

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What’s the point of a technical architecture?

Understand how software and hardware fit together
Assess what standards are appropriate
Determine tradeoffs
Identify where systems need to integrate

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Examples of software components

Data storage
Data acccess logic
Application logic
Presentation logic

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Examples of hardware components

Clients (computers, tablets,)
Servers (mainframes, VMs)
Networks (LAN, WAN)

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What is server-based architecutre

Server performs all four software components.

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What is clients-based architecture

Clients do most activity.

A server stores data.

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What is good about client-based architecture?

It’s simple to develop

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What is bad about client-based architecture?

Easy to overload a client

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What dependencies exist with client-based architecture?

You need a good network and powerful enough client.

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The main architecture of most modern systems

Client-Server architecture

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What can client-server do at little cost?

Scale

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What does a thin client do?

presentaton logic

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What does a thick client do?

Application and presentation logic

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What is one requirement of client-server architecture?

Applications must be written for both client and server

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What does a client-server tier define?

They define how logic is partitioned

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What is a 2-tier client-server?

one server = data stroage and access.

client = responsible for application and presentation logic

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What is a 3-tier client-server

one server = data stoage and access
second server = application logic
client = responsible for application and presentation logic

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what does n-tier define?

application logic split among two servers, data logic on another

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where is n-tier common?

e-commerce

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why is n-tier good?

good load balancing

scalable

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why is n-tier bad?

places heavy load on network

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Cost of infastructure: server

very high

Cost of infastructure: client

medium

Cost of infastructure: client-server

low

Cost of development: server

low

cost of development: client-server

high

ease of development: server

low

ease of development: client-based

high

ease of development: client-server

low-medium

interface capability: server

low

interface capability: client

high

interface capability: client-server

high

control and security: server

high

control and security: client

low

control and security: client-server

medium

scalability: server

low

scalability: client

medium

scalability: client-server

high

Define service

a discrete unit of functionality. | it can be accessed remotely.

define service orientated architecture

style of software design services provided by application components communication over a network

define infastructure as a service

virtuliaed computing resources provided online (AWS, Azure)

define platform as a service

resources and tools provided over the internet

define software as a service

software applications provided over the internet (Gmail)

define business as a service

complete business process provided over internet (billing, complaint management)

What is IaaS

infastructure as a service

What is SaaS

Software as a service

What is PaaS

platform as a service

What is BaaS

Business as a service

What does the cloud include

a data centre a service provided by vendor virtual servers dark centres

what is a dark centre

fully automated operation

How is IT treated by cloud computing

as a commodity client is desktop server is in the cloud

Infastructure design has what components

Network Hardware Operating Systems Storage

Infastructure has two adjective properties:

Resilience | Security

What does network design contain?

all major components

What's the point of network design?

Illustrate how system components fit together

What is typical structure of network

in-house and external networks

What does storage design contain?

Cables Host bus adapters Switches

What types of storage are considered in storage design

tape arrays disk arrays other storage devices

what's the point of storage design?

to provide fast, efficent, secure, resilient data

Give examples of technical environment requirements

system will need to work on a certain bowser | system will need to be 'always-on'

Give examples of system integration requirements

the system must be able to import and export excel spreadsheets the system will read and write to the main invetory database

Give examples of portability requirements

the system must be able to work on windows and mac

Give examples of maintainablity requirements

new version of the system will be released every six months

give four operational requirements

technical environment requirements system integration requirements portability requirements maintainability requirements

give three performance requirements

speed requirements capacity requirements availability and reliability requirements

Give examples of speed requirements

response time from network must be less than 7 seconeds

give examples of capacity requirements

there will be a maximum of 100 users simultaneously

give examples of availability and reliability requirements

scheduled maintenance shall not exceed one 6 hour period each month

Give 4 security requirements examples

system value access control encryption and authentication virus control

give a system value requirements example

a complete loss of all data will cost this much money

give an access control example

only managers being able to share something in their department

give an encryption example

user logging in outside of building will be blocked

give virus control example

all uploaded files will be checked

What is Green IT

looking at reducing environmental impact of IT

3 things that contribute to IT waste

Disposing of toxic materials in computers Energy consumption PAper

What cultural and political bits could come into play with technical architecture?

Language differences | Centralised vs local

What legal implications could come up in technical architecture?

Laws and governments. | Consider data storage depending on the country.

what are the four types of testing?

unit integration system UAT

what is black box testing?

functional testing

what is white box testing?

the INTERNAL workings

Technical Architecture Flashcards

(83 cards)