When Service a Receives a Message from Service Consumer A(1),the

question 1

Multiple Choice

When Service A receives a message from Service Consumer A(1) ,the message is processed by Component A. This component first invokes Component B (2) , which uses values from the message to query Database A in order to retrieve additional data. Component B then returns the additional data to Component A. Component A then invokes Component C (3) , which interacts with the API of a legacy system to retrieve a new data value. Component C then returns the data value back to Component A. Next, Component A sends some of the data it has accumulated to Component D (4) , which writes the data to a text file that is placed in a specific folder. Component D then waits until this file is imported into a different system via a regularly scheduled batch import. Upon completion of the import, Component D returns a success or failure code back to Component A. Component A finally sends a response to Service Consumer A (5) containing all of the data collected so far and Service Consumer A writes all of the data to Database B (6) . Components A, B, C. and D belong to the Service A service architecture. Database A, the legacy system, and the file folders are shared resources within the IT enterprise. Service A is a task service that completes an entire business task on its own without having to compose other services. However, you have received many complaints about the reliability of Service A . Specifically, it has three problems. First, when Component B accesses Database A, it may not receive a response for several minutes when the database is being accessed by other applications in the IT enterprise. Secondly, the legacy system accessed by Component C frequently crashes and therefore becomes unavailable for extended periods of time. Third, for Component D to respond to Component A, it must first wait for the batch import of the files to occur. This can take several minutes during which Service Consumer A remains stateful and consumes excessive memory. What steps can be taken to address these three problems?

• A) The Legacy Wrapper pattern can be applied so that Component B is separated to wrap the shared database, thereby allowing Component A to interact with this new service instead of directly interacting with the database. The Legacy Wrapper pattern can be applied again so that Component C is separated into a separate service that acts as a wrapper of the legacy system API. Component D can then be separated into a separate service and the Event-Driven Messaging pattern can be applied to establish a publisher-subscriber relationship between this new service and Component A and between Service A and Service Consumer A. The interaction between Service Consumer A and Component A is then redesigned so that Component A issues a message back to Service Consumer A when the event related to the batch import is triggered.
• B) The Service Data Replication pattern can be applied so that Component B can access a replicated database instead of having to access the shared Database A directly. The Legacy Wrapper pattern can be applied so that Component C is separated into a separate service that acts as a wrapper of the legacy system API. Next, the Reliable Messaging pattern can be applied so that acknowledgements are issued from the new wrapper service to Component A, thereby enabling notifying Component A during times when the legacy system is unavailable. Finally, Component D is separated into a separate service and the Event-Driven Messaging pattern is applied to establish a publisher-subscriber relationship between this new service and Component A. The interaction between Service Consumer A and Component A is then redesigned so that Component A first interacts with Component B and the new wrapper service. Service A then issues a final message back to Service Consumer A.
• C) The Service Data Replication pattern can be applied so that Component B can access a replicated database instead of having to access the shared Database A directly. The Legacy Wrapper pattern can be applied so that Component C is separated into a separate service that acts as a wrapper of the legacy system API. Next, the Asynchronous Queuing pattern can be applied so that a messaging queue is positioned between Component A and the new wrapper service, thereby enabling communication during times when the legacy system is unavailable. Finally, Component D is separated into a new service and the Event-Driven Messaging pattern is applied to establish a publisher-subscriber relationship between this service and Component A and between Service A and Service Consumer A. The interaction logic is redesigned as follows: Component A interacts with Component B, the new wrapper service, and then issues a request to the new event-driven service. Upon receiving a response triggered by the event related to the batch import, Service A responds to Service Consumer A.
• D) None of the above.

Evaluate the effectiveness of educational strategies aimed at overcoming barriers to educational equity.

Understand the implications of affirmative action policies on college admissions and the experience of different racial groups.

Grasp the concept of "cultural capital" and its variants within social contexts.

Identify how structural racism is manifested in educational institutions.

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Definitions:

Fast Adaptive Mode

High-speed processing algorithms; Allison uses this term to describe an operating condition in which large changes are made to initial shift conditions to adjust for major system tolerances such as solenoid-to-solenoid, main pressure, and clutch-to-clutch variations. A new or newly rebuilt transmission should be programmed to operate in fast adaptive mode.

Close-ratio Gearing

A transmission design where the gear ratios are closer together, allowing the engine to operate more consistently near its optimal RPM for performance.

Standard Gear Ratios

The predefined set of gear ratios used in transmissions to optimize vehicle performance and fuel efficiency under normal driving conditions.

Latching Solenoid

A solenoid device that can hold its position (engaged or disengaged) without needing continuous electrical power, a reemphasis on its function for maintaining states.