# Quiz 3 - Data Formats and Streaming Data Quiz
1. **What is true between data modeling and the formatting of the data?**
* The data does not necessarily need to be formatted in a way that represents the data model. Just so long as it can be extrapolated.
* There is a one to one correspondence between formatting data and data modeling. For every model of data, there is only one way to store the data.
* There is always one specific schema for storing model data that is the best and preferred method for the specific data representation.
2. **What is streaming?**
* Using static data stored from a real time source in order to process and guide the application.
* Calculating results using real time data otherwise known as streaming data.
* Using sensors to manipulate the system, such as a smart car being able to drive by itself using sensors to detect road hazards.
* Utilizing real time data to compute and change the state of an application continuously.
3. **Of the following, what best describes the properties of working with streaming data?**
* Small time windows for working with data.
* Always unbounded in sequence, in other words, data is not guaranteed to be in order.
* Data manipulation is near real time.
* Does not ping the source interactively for a response upon receiving the data.
* Independent computations that do not rely on previous or future data.
* Data is always utilized for streaming the application.
4. **What is a characteristic of streaming data?**
* Data is finite in size and size determines the time and space of processing the data.
* Data is unbounded in size but requires only finite time and space to process it.
* The data is unbounded in size and the size determines the time and space of processing the data.
* The data is finite and requires only finite time and space to process the data.
5. **What type of algorithm is required for analyzing streaming data?**
* Fast and Simple
* Accurate and Memory Efficient
* Fast and Complex
* Accurate and Consistent
6. **What is lambda architecture?**
* A specific hardware architecture for a server made specifically for processing real time data.
* A specific method for processing streaming data using special real time processes.
* A method to process streaming data by utilizing batch processing and real time processing.
7. **Of the following, which best represents the challenge regarding the size and frequency of data?**
* The size and frequency of the streaming data may be too small.
* The size and frequency of the streaming data may be sporadic.
* There may not be data to produce the notion of size and frequency.
8. **What is the difference between data lakes and data warehouses?**
* Data lakes contain only files while data warehouses contain only databases.
* Data lakes house raw data while data warehouses contain pre-formatted data.
* Data lakes utilize hierarchical systems while data warehouses use object storage.
9. **What is schema-on-read?**
* The process where formatted data is given structure when read.
* Data is stored as raw data until it is read by an application where the application assigns structure.
* The process where data is pre-formatted prior to being read but the schema is loaded on read.
* Another name for data lakes.
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