Unit 9 Architecture, patterns and reuse (Part 1)

What keywords describe the Skype architecture in this figure?

The above is an example of what type of architecture?

Choosing the architecture of a software late on might be a good idea.

The twin-peaks model develops [blank_start]requirements[blank_end] and [blank_start]architecture[blank_end] concurrently.

Can architecture and agile live together? Some agile practitioners fear that architecture is associated with ‘big design up front’ (BDUF), which limits flexibility and runs against the lightweight development ethos of agile.

In what ways can architecture contribute to Agile? Select 3.

Architecturally significant Requirements do no influence a system's architecture.

Architecturally significant requirements can be split into the following 4 characteristics: - [blank_start]Quality[blank_end] attributes: non-functional requirements such as security, reliability, availability, usability, maintainability, portability - [blank_start]Core features[blank_end]: ‘the problem the software is trying to solve’ - [blank_start]Constraints[blank_end]: Technical, budget, time... - [blank_start]Application[blank_end] environment: the environment in which the system will run.

Select the 4 architectural views introduced in Kruchten's model:

- The [blank_start]logical[blank_end] (or functional): the system’s main functional elements and their interactions - The [blank_start]process[blank_end] view: the set of independently executing processes that will exist at run-time and the communication between them. - The [blank_start]deployment[blank_end] view describes how the system will be deployed to an operating environment in terms of the physical computers. - The [blank_start]development[blank_end] view describes how the software will be split into [blank_start]subsystems[blank_end] that can be allocated to teams of developers.

Example stakeholder groups. Fill in the ASR categories they fall into. - Students and teaching staff will be concerned with core functionality, usability, availability and performance – [blank_start]core features[blank_end] and [blank_start]qualityattributes[blank_end]. - The examinations section will be particularly concerned with [blank_start]security –quality attributes[blank_end]. - The finance department will be concerned with the cost – [blank_start]constraints[blank_end]. - Management will be concerned with the cost, when the system will be delivered and its effectiveness – [blank_start]constraints[blank_end], [blank_start]core features[blank_end]. - Designers will be concerned with how the system can be partitioned, what the run-time elements will be and where they will be deployed – the [blank_start]application environment[blank_end]. - Programmers will be concerned with the core functionality represented in the design, how easily the design can be implemented in code and what language(s) will be used – [blank_start]core features[blank_end], [blank_start]quality attributes[blank_end], [blank_start]constraints[blank_end]. - Testers will be concerned with whether the system is easy to test – [blank_start]qualityattributes[blank_end]. . The IT department will be concerned with the operating environment and how easy the system is to run – [blank_start]application environment[blank_end]. - Developers responsible for maintaining the system will be concerned with how easy the system is to modify – [blank_start]quality attributes[blank_end].

In software architecture the set of conventions and models appropriate to a particular view is often referred to as a [blank_start]viewpoint[blank_end].

Select 9 common architectural styles.

What type of architecture does the figure describe?

What type of architecture do the figures describe?

What type of architecture is this?

What architecture style is this?

What architecture style is this? Select 3 names for it.

A [blank_start]framework[blank_end] is a segment of [blank_start]architecture[blank_end] and [blank_start]code[blank_end] that can be reused.

A [blank_start]product line[blank_end] is a line of similar products that differ only in [blank_start]detail[blank_end].

A software product line is essentially a [blank_start]domain[blank_end]-specific framework.

What are the various ingredients that make up a framework? Select 4.

- [blank_start]Architectural styles[blank_end] reuse expertise in large-scale architectural design – the types of component used and the patterns of interaction between them. - [blank_start]Frameworks[blank_end] reuse a particular architecture and a set of software components suitable for use within it. - [blank_start]Product lines[blank_end] reuse reference architectures, software components and expertise about the variations needed to fulfil customer requirements.

What is the name of this design pattern? (Enter the class name in figure)

When the Adapter receives a draw() message it simply [blank_start]forwards[blank_end] a render() message to the RoundedSquare and the latter produces the required shape.

Which of the below statement are true about adapters? Select 3

Select all answers that apply to Generalisation relationships. Select 3.

Select all answers that apply to Realisation relationships.

[blank_start]Idioms[blank_end] are patterns that apply to a specific programming language – Java has one set of them, Python a different set and so on.

- [blank_start]creational[blank_end] patterns deal with ways of creating objects independently of the clients that will use them - [blank_start]structural[blank_end] patterns deal with relationships among classes and objects - [blank_start]behavioural[blank_end] patterns deal with how objects communicate and interact.

The adapter pattern is an example of a [blank_start]structural[blank_end] pattern.