COSC 4353 Exam 2 || 100% Verified Answers.
What do you understand by the term 'DevOps'? correct answers DevOps
(development+operations) integrates development, deployment and support, with a single team
responsible for all of them.
What three factors led to the development and adoption of DevOps? correct answers Agile
methods reduced software development time but deployment and delivery remained a bottleneck,
Amazon experimented with integrating service development and support, software as a service
became a realistic deployment model.
What are the three principles that are the basis of Devops? correct answers Everyone is
responsible for everything, everything that can be automated should be automated, measure first,
change later.
List four important benefits of Devops. correct answers Faster deployment, reduced risk, faster
repair of bugs and outages, more productive teams.
What is code management? correct answers A set of software supported practices that are used to
manage an evolving codebase, keeping track of changes made and ensuring the developers can
work independently on the same code without interference.
What general areas are supported by code management systems? correct answers Code transfer,
version storage and retrieval, merging and branching, version information.
List five features of code management systems. correct answers Version and release
identification, change history recording, independent development, project support, storage
management.
What are three advantages of distributed code management systems? correct answers Resilience,
speed, flexibility.
What are 'branching and merging'? correct answers Branching occurs when a developer makes
changes to a shared codebase and an independent branch is created to allow these changes to be
made without interfering with other developers. Merging is the process of integrating the
changes made in a branch into the shared codebase.
What are the four aspects of DevOps automation? correct answers Continuous integration,
continuous delivery, continuous deployment, infrastructure as code.
What is the main purpose of an issue management system? correct answers To keep track of
issues and problems raised by developers and customers and the development teams responses to
the issues that have been raised.
, What is meant by continuous integration? correct answers Continuous integration means that
every time a developer makes a change to a code unit, it is immediately integrated into the shared
codebase.
How does incremental system building work? correct answers Incremental system building
means that only those parts of a system that have been changed are recompiled and rebuilt. It
relies on a dependency graph that shows code unit dependencies and time stamps that show
when code units have been changed.
What is continuous delivery and how does it differ from continuous deployment? correct
answers Continuous delivery is the processes of creating a deployable version of a system every
time a change is integrated into the project codebase. It differs from continuous deployment in
that deployment involves pushing that change to software customers; In continuous delivery,
there is no requirement to release the changed software.
List four benefits of continuous deployment. correct answers Reduced costs, faster problem
solving, faster customer feedback, A/B testing.
What is meant by 'infrastructure as code'? correct answers An executable model of software
infrastructure (databases, libraries, browsers, etc.) is maintained so that it is possible to recreate
this specific infrastructure on demand.
What are the key benefits of representing your infrastructure as code? correct answers Visibility -
the model makes the infrastructure understandable; reproducibility - it is always possible to
recreate the infrastructure that software relies on; reliability - human errors are reduced when
updating the infrastructure; recovery - it is fast to rebuild a specific infrastructure after a problem
has occurred.
What are the four types of measurements that may be used in software development? correct
answers Process measurements, service measurements, usage measurements, business success
measurements.
Why is it unreliable to link business success measurements with other software measurements?
correct answers Because business success is a complex issue that depends on many factors, such
as management skills, that are nothing to do with software development. We do not know how to
assess the contribution of software development changes in business success.
List five metrics that may be used when assessing DevOps processes. correct answers Any five
from: mean time to recovery, percentage of failed deployments, deployment frequency, change
volume, lead time from development to deployment, percentage increase in customer numbers,
number of customer complaints, availability, performance.
What is a microservice? correct answers A small-scale, stateless software component that is
completely independent and which implements a single business function.
What do you understand by the term 'DevOps'? correct answers DevOps
(development+operations) integrates development, deployment and support, with a single team
responsible for all of them.
What three factors led to the development and adoption of DevOps? correct answers Agile
methods reduced software development time but deployment and delivery remained a bottleneck,
Amazon experimented with integrating service development and support, software as a service
became a realistic deployment model.
What are the three principles that are the basis of Devops? correct answers Everyone is
responsible for everything, everything that can be automated should be automated, measure first,
change later.
List four important benefits of Devops. correct answers Faster deployment, reduced risk, faster
repair of bugs and outages, more productive teams.
What is code management? correct answers A set of software supported practices that are used to
manage an evolving codebase, keeping track of changes made and ensuring the developers can
work independently on the same code without interference.
What general areas are supported by code management systems? correct answers Code transfer,
version storage and retrieval, merging and branching, version information.
List five features of code management systems. correct answers Version and release
identification, change history recording, independent development, project support, storage
management.
What are three advantages of distributed code management systems? correct answers Resilience,
speed, flexibility.
What are 'branching and merging'? correct answers Branching occurs when a developer makes
changes to a shared codebase and an independent branch is created to allow these changes to be
made without interfering with other developers. Merging is the process of integrating the
changes made in a branch into the shared codebase.
What are the four aspects of DevOps automation? correct answers Continuous integration,
continuous delivery, continuous deployment, infrastructure as code.
What is the main purpose of an issue management system? correct answers To keep track of
issues and problems raised by developers and customers and the development teams responses to
the issues that have been raised.
, What is meant by continuous integration? correct answers Continuous integration means that
every time a developer makes a change to a code unit, it is immediately integrated into the shared
codebase.
How does incremental system building work? correct answers Incremental system building
means that only those parts of a system that have been changed are recompiled and rebuilt. It
relies on a dependency graph that shows code unit dependencies and time stamps that show
when code units have been changed.
What is continuous delivery and how does it differ from continuous deployment? correct
answers Continuous delivery is the processes of creating a deployable version of a system every
time a change is integrated into the project codebase. It differs from continuous deployment in
that deployment involves pushing that change to software customers; In continuous delivery,
there is no requirement to release the changed software.
List four benefits of continuous deployment. correct answers Reduced costs, faster problem
solving, faster customer feedback, A/B testing.
What is meant by 'infrastructure as code'? correct answers An executable model of software
infrastructure (databases, libraries, browsers, etc.) is maintained so that it is possible to recreate
this specific infrastructure on demand.
What are the key benefits of representing your infrastructure as code? correct answers Visibility -
the model makes the infrastructure understandable; reproducibility - it is always possible to
recreate the infrastructure that software relies on; reliability - human errors are reduced when
updating the infrastructure; recovery - it is fast to rebuild a specific infrastructure after a problem
has occurred.
What are the four types of measurements that may be used in software development? correct
answers Process measurements, service measurements, usage measurements, business success
measurements.
Why is it unreliable to link business success measurements with other software measurements?
correct answers Because business success is a complex issue that depends on many factors, such
as management skills, that are nothing to do with software development. We do not know how to
assess the contribution of software development changes in business success.
List five metrics that may be used when assessing DevOps processes. correct answers Any five
from: mean time to recovery, percentage of failed deployments, deployment frequency, change
volume, lead time from development to deployment, percentage increase in customer numbers,
number of customer complaints, availability, performance.
What is a microservice? correct answers A small-scale, stateless software component that is
completely independent and which implements a single business function.
