The process of organizing data in a data warehouse into a time-based sequence is known as _______ modeling.
- Dimensional
- Sequence
- Temporal
- Time-Series
Temporal modeling is the process of organizing data in a data warehouse into a time-based sequence. It allows for analyzing data trends and changes over time, providing valuable insights for decision-making.
How does Principal Component Analysis (PCA) assist in data preprocessing?
- It increases data complexity by adding more features
- It reduces dimensionality by transforming variables into a new set of uncorrelated variables, known as principal components
- It removes outliers from the dataset
- It standardizes the data by scaling it to a specific range
PCA assists in data preprocessing by reducing dimensionality. It transforms the original variables into a new set of uncorrelated variables, known as principal components, preserving essential information while reducing computational complexity.
Which cloud computing service model provides users with the highest level of control over the operating systems, applications, and storage?
- Function as a Service (FaaS)
- Infrastructure as a Service (IaaS)
- Platform as a Service (PaaS)
- Software as a Service (SaaS)
Infrastructure as a Service (IaaS) provides users with the highest level of control over the operating systems, applications, and storage. Users can manage and control the underlying infrastructure while still benefiting from the cloud environment.
Which project management methodology is often favored in data projects for its flexibility and iterative approach?
- Agile
- PRINCE2
- Scrum
- Waterfall
Agile is often favored in data projects for its flexibility and iterative approach. It allows teams to adapt to changing requirements and promotes continuous improvement throughout the project lifecycle. Waterfall, Scrum, and PRINCE2 have different methodologies and are not as commonly associated with the iterative nature of data projects.
In risk management for data projects, the process of identifying, analyzing, and responding to risk factors is known as _________ management.
- Data
- Project
- Risk
- Stakeholder
In risk management, the process of identifying, analyzing, and responding to risk factors is known as "Risk" management. This involves assessing potential risks to the success of a data project and developing strategies to mitigate or respond to them.
To send a large amount of data in a request, the _______ method is preferred.
- DELETE
- GET
- POST
- PUT
To send a large amount of data in a request, the POST method is preferred as it allows for sending data in the request body.
What are the implications of disabling cookies for session tracking?
- Enhanced security
- Improved performance
- Increased server load
- Loss of session state
Disabling cookies for session tracking may result in the loss of session state, as cookies are commonly used to store session identifiers. This can impact the continuity of user sessions.
The __________ attribute of the session object is used to store objects.
- getObject()
- saveAttribute()
- setAttribute()
- storeObject()
The setAttribute() method of the session object is used to store objects in the session.
The sequence of method calls for a servlet put into service is __________, __________, and then __________.
- destroy(), init(), service()
- init(), destroy(), service()
- init(), service(), destroy()
- service(), init(), destroy()
The sequence of method calls for a servlet put into service is init(), service(), and then destroy().
What is the primary purpose of the POST method in HTTP?
- To delete data
- To request data
- To retrieve data
- To send data
The primary purpose of the POST method in HTTP is to send data to the server, typically used for submitting form data and other complex data types.