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Software Engineering 2



Security

The ability of the system to protect itself against accidental or deliberate intrusion.

Software Engineering

is concerned with theories, methods and tools for professional software development

The correct answers are: needs, experience, capabilities

Three aspects of the system users that UI design must take into account. (select 3 answers)

Quality

means that a product should meet its specification

Computer Science

It is concerned with theory and fundamentals of software development.

FALSE

System users often judge a system by its functionality rather than its interface.

Software process

This is a set of activities whose goal is the development or evolution of software.

Quality assurance

Establish organizational procedures and standards for quality

TRUE

Improper user interface design is the reason why so many software systems are never used.

Evolution

This is the process changing the software in response to changing demands

Quality control

Ensure that procedures and standards are followed by the software development team

FALSE

Usefulness and trustworthiness of a computer system are the same thing.

TRUE

The faulty system state may be transient and ‘corrected’ before an error arises.

The correct answers are: Specification, Development, Validation, Evolution

These are generic activities involved in all software processes: (select all that applies)

Human error

Human behavior that results in the introduction of faults into a system.

Survivability

The ability of a system to continue to deliver its services to users in the face of deliberate or accidental attack.

Software Engineering

This expenditure represents a significant fraction of GNP in all developed countries.

Development

It deals with production of the software system itself.

Quality planning

Select applicable procedures and standards for a particular project and modify these as required

Direct Manipulation

It is a form of Interaction style is ideal for video games.

Specification,
Development,
Validation,
Evolution

These are generic activities involved in all software processes: (select all that applies)

System failure

System state that are a usually a result of system errors that are derived from faults in the system.

FALSE

The error can not be corrected by built-in error detection and recovery.

TRUE

Dependability costs tend to increase exponentially as increasing levels of dependability are required.

Dependability

The extent to which a critical system is trusted by its users.

Generic

These are software products developed to be sold to a range of different customers.

FALSE

For systems with a short life, maintenance costs may be several times development costs.

Improvement identification

Identify quality, cost or schedule bottlenecks

System failure

An event that occurs at some point in time when the system does not deliver a service as expected by its users.

TRUE

A poorly designed interface can cause a user to make catastrophic errors.

TRUE

The failure can be avoided by built-in protection facilities.

Safety

The ability of the system to operate without catastrophic failure.

Customized,
Bespoke

These are developed software for a single customer according to their specification (select all that applies)

Software Engineers

They are I.T. practitioners who adopt a systematic and organised approach to their work and use appropriate tools and techniques depending on the problem to be solved, the development constraints and the resources available.

Process change introduction

Modify the process to remove identified bottlenecks

Availability

The ability of the system to deliver services when requested.

TRUE

Dependability costs tend to increase exponentially as increasing levels of dependability are required.

recoverability

It is a UI design principle that allows user to recover from errors.

Software Engineer

It is focused on cost effective software development.

TRUE

Because of very high costs of dependability achievement, it may be more cost effective to accept untrustworthy systems and pay for failure costs.

None among the choices

Some of the components of User interface design process. (select all that applies)

The correct answer i

The use of more expensive development techniques and hardware that are required to achieve the higher levels of dependability decreases the cost of dependability of software.

Reliability

The probability of failure-free system operation over a specified time in a given environment for a given purpose.

TRUE

Designers should be aware of people’s physical and mental limitations.

Technical cost

This factor often dominates system costs in a system development

Survivability

It subsumes the notion of resilience - the ability of a system to continue in operation in spite of component failures.

Change tuning

Evolve and improve process improvements

Specification

Part of the generic activity of software development which checks what the system should do and its development constraints.

Software Engineering

It is concerned with theories, methods and tools for professional software development

Process change training

Train staff involved in new process proposals

FALSE

The use of more expensive development techniques and hardware that are required to achieve the higher levels of dependability decreases the cost of dependability of software.

Reliability

The ability of the system to deliver services as specified.

System error

Erroneous system behavior where the behavior of the system does not conform to its specification.

Software Engineering

It is focused on cost effective software development.

Validation

The process of checking that the software is what the customer wants.

System fault

An incorrect system state i .e . a system state that is unexpected by the designers of the system.

FALSE

The increased testing and system validation that is required to convince the system client that the required levels of dependability have been achieved decreases the cost of dependability of software

ISO 9000

International set of standards for quality management.

Maintainability

A system attribute which is concerned with the ease of repairing the system after a failure has been discovered or changing the system to include new features.

Availability

The probability that a system, at a point in time, will be operational and able to deliver the requested services.

Survivability

This is an increasingly important attribute for distributed systems whose security can be compromised.

level 2

Organizations rated as ______ in the CMM are likely to be ISO 9000 compliant

User-centered design

It is an approach to UI design where the needs of the user are paramount and where the user is involved in the design process.

TRUE

Errors do not necessarily lead to system failures.

User diversity

It is a UI design principle that provides appropriate interaction facilities for different types of system user.

The correct answers are: Customized, Bespoke

These are developed software for a single customer according to their specification (select all that applies)

Dependability

It reflects the extent of the user’s confidence that it will operate as users expect and that it will not ‘fail’ in normal use.

Process analysis

Model and analyze (quantitatively if possible) existing processes

Software cost

This factor often dominates system costs in a system development

 


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