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NEW QUESTION: 1
Which Azure data storage solution should you recommend for each application? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation
Health Review: Azure SQL Database
Scenario: ADatum identifies the following requirements for the Health Review application:
* Ensure that sensitive health data is encrypted at rest and in transit.
* Tag all the sensitive health data in Health Review. The data will be used for auditing.
Health Interface: Azure Cosmos DB
ADatum identifies the following requirements for the Health Interface application:
* Upgrade to a data storage solution that will provide flexible schemas and increased throughput for writing data. Data must be regionally located close to each hospital, and reads must display be the most recent committed version of an item.
* Reduce the amount of time it takes to add data from new hospitals to Health Interface.
* Support a more scalable batch processing solution in Azure.
* Reduce the amount of development effort to rewrite existing SQL queries.
Health Insights: Azure SQL Data Warehouse
Azure SQL Data Warehouse is a cloud-based enterprise data warehouse that leverages massively parallel processing (MPP) to quickly run complex queries across petabytes of data. Use SQL Data Warehouse as a key component of a big data solution.
You can access Azure SQL Data Warehouse (SQL DW) from Databricks using the SQL Data Warehouse connector (referred to as the SQL DW connector), a data source implementation for Apache Spark that uses Azure Blob Storage, and PolyBase in SQL DW to transfer large volumes of data efficiently between a Databricks cluster and a SQL DW instance.
Scenario: ADatum identifies the following requirements for the Health Insights application:
* The new Health Insights application must be built on a massively parallel processing (MPP) architecture that will support the high performance of joins on large fact tables References:
https://docs.databricks.com/data/data-sources/azure/sql-data-warehouse.html
Topic 5, Data Engineer for Trey Research
Overview
You are a data engineer for Trey Research. The company is close to completing a joint project with the government to build smart highways infrastructure across North America. This involves the placement of sensors and cameras to measure traffic flow, car speed, and vehicle details.
You have been asked to design a cloud solution that will meet the business and technical requirements of the smart highway.
Solution components
Telemetry Capture
The telemetry capture system records each time a vehicle passes in front of a sensor. The sensors run on a custom embedded operating system and record the following telemetry data:
* Time
* Location in latitude and longitude
* Speed in kilometers per hour (kmph)
* Length of vehicle in meters
Visual Monitoring
The visual monitoring system is a network of approximately 1,000 cameras placed near highways that capture images of vehicle traffic every 2 seconds. The cameras record high resolution images. Each image is approximately 3 MB in size.
Requirements: Business
The company identifies the following business requirements:
* External vendors must be able to perform custom analysis of data using machine learning technologies.
* You must display a dashboard on the operations status page that displays the following metrics:
telemetry, volume, and processing latency.
* Traffic data must be made available to the Government Planning Department for the purpose of modeling changes to the highway system. The traffic data will be used in conjunction with other data such as information about events such as sporting events, weather conditions, and population statistics.
External data used during the modeling is stored in on-premises SQL Server 2016 databases and CSV files stored in an Azure Data Lake Storage Gen2 storage account.
* Information about vehicles that have been detected as going over the speed limit during the last 30
* minutes must be available to law enforcement officers. Several law enforcement organizations may respond to speeding vehicles.
* The solution must allow for searches of vehicle images by license plate to support law enforcement investigations. Searches must be able to be performed using a query language and must support fuzzy searches to compensate for license plate detection errors.
Requirements: Security
The solution must meet the following security requirements:
* External vendors must not have direct access to sensor data or images.
* Images produced by the vehicle monitoring solution must be deleted after one month. You must minimize costs associated with deleting images from the data store.
* Unauthorized usage of data must be detected in real time. Unauthorized usage is determined by looking for unusual usage patterns.
* All changes to Azure resources used by the solution must be recorded and stored. Data must be provided to the security team for incident response purposes.
Requirements: Sensor data
You must write all telemetry data to the closest Azure region. The sensors used for the telemetry capture system have a small amount of memory available and so must write data as quickly as possible to avoid losing telemetry data.
NEW QUESTION: 2
A Developer is investigating an issue whereby certain requests are passing through an Amazon API Gateway endpoint /MyAPI, but the requests do not reach the AWS Lambda function backing
/MyAPI. The Developer found that a second Lambda function sometimes runs at maximum concurrency allowed for the given AWS account.
How can the Developer address this issue?
A. Manually reduce the concurrent execution limit at the account level
B. Reduce the throttling limits in the API Gateway /MyAPI endpoint
C. Configure the second Lambda function's concurrency execution limit
D. Add another API Gateway stage for /MyAPI, and shard the requests
Answer: C
NEW QUESTION: 3
Which two statements about SNMP are true?(Choose two.)
A. SNMPv2c can provide authentication as well as encryption.
B. SNMFV3 uses the 3DES encryption algonthm to provide data privacy.
C. SNMPv2c supports only 32-bit counters
D. The SNMP manager is responsible for collecting data from the MIB.
E. SNMPv3 uses the SHA encryption algonthm to provide authorization.
F. The SNMP agent is responsible for collecting data from the MIB
Answer: B,D
NEW QUESTION: 4
Wendall Wayne is a fixed income portfolio manager with Skyline Investments. Until recently he has focused almost exclusively on residential mortgage-backed securities (MBS). However, two weeks ago he was given approval to begin purchasing asset-backed securities (ABS) and commercial MBS as well.
Wayne has forecasted that interest rates will decrease by approximately 100 basis points over the next month.
Wayne first completes an analysis of two tranches (a PAC I tranche and a support tranche) from a collateralized mortgage obligation (CMO) that was issued 18 months ago. When the CMO was issued, the initial collar of the PAC I tranche was 150 - 400 PSA. He estimates the change in the average life of each tranche as the prepayment speed varies, assuming the prepayment speed stays at that speed until the tranche matures. The results are shown in Exhibit 1.
In his report, Wayne makes the following statements regarding the CMO:
Statement 1: The CMO is structured so that the support tranche has more extension risk, and the PAC I tranche has more contraction risk.
Statement 2: The cash flows of the PAC I tranche will be less affected by the change in interest rates I have forecast than the cash flows of the support tranche.
Wayne has pushed for approval to begin trading ABS because he is particularly interested in collateralized debt obligations (CDOs). However, he doesn't know a lot about them, so he first does some reading and prepares some key points related to CDOs to guide his analysis.
Statement 3: CDOs are typically collateralized by emerging market bond issues, home equity bank loans, and high-yield corporate bond issues.
Statement 4: One advantage of issuing a synthetic CDO versus a cash CDO is that credit risk is lower with a synthetic CDO because the junior note holders also sell a credit default swap.
Statement 5: Some CDOs include an equity tranche to provide payment and credit protection to the senior and mezzanine tranches, but for most issues, credit protection is provided by external credit enhancements.
Wayne wants to understand the distinction between amortizing and non-amortizing assets that are securitized by ABS transactions, as well as the appropriate spread measures to use for various types of fixed-income securities. He asks a colleague, Martin Freed, to explain to him the difference between the two and how the payment structure of the ABS is affected by whether the assets in the pool are amortizing or non-amortizing. Freed replies:
Statement 6: An auto loan is an example of an amortizing asset, and a credit card receivable is an example of a non-amortizing asset.
Statement 7: For amortizing assets, the composition of the loans in the asset pool doesn't change once the assets are securitized. For non-amortizing assets, the composition of the asset pool does change.
Freed also tells Wayne that the credit analysis of commercial mortgage-backed securities (CMBS) should focus on the credit risk of the property, not the borrower. Freed also says that two key ratios useful for assessing the credit risk of the property are the debt service coverage ratio (net operating income/debt service) and the loan-to-value ratio (current mortgage amount/current appraised value). Wayne concludes that both of the ratios Freed recommends for credit analysis of CMBS are positively related to credit risk:
the higher the ratio, the more risky the loan.
Finally, Wayne is trying to determine the most appropriate spread measure for valuing callable corporate bonds and high-quality home equity loan ABS. He plans to choose from the following measures: the zero- volatility spread, the OAS from the binomial model, and the OAS from the Monte Carlo model.
Regarding the CMO, are Wayne's statements correct?
A. Only Statement 1 is correct.
B. Both statements are correct.
C. Only Statement 2 is correct.
Answer: C
Explanation:
Explanation/Reference:
Explanation:
Statement 1 is incorrect. The PAC I tranche has less extension risk and less contraction risk than the support tranche. It has less contraction risk because when rates fall and prepayment speeds increase, the average life of the PAC I tranche falls by less than the average life of the support tranche. It has less extension risk because when rates rise and prepayment speeds fall, the average life of the PAC I tranche increases by less than the support tranches average life.
Statement 2 is correct. If interest rates decrease by 100 basis points, prepayment speeds will increase.
The support tranche will absorb most of the unexpected prepayments, however, and its cash flows will be significantly affected, while the PAC I tranche will be minimally affected. (Study Session 15, LOS 55.h,i)
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