* View the Apex Jobs page and query the AsyncApexJob object are two ways a developer can get the status of an enqueued job for a class that implements the Queueable interface. They are both methods to
* monitor and manage the asynchronous Apex jobs that are submitted to the Apex job queue12.
* View the Apex Jobs page is a user interface option that allows a developer to see the status and results of the asynchronous Apex jobs in the Setup menu of Salesforce. It can show the progress, completion, failure, or cancellation of the jobs, as well as the start time, end time, submitted by, and apex class name of the jobs12.
* Query the AsyncApexJob object is a programmatic option that allows a developer to retrieve the status and results of the asynchronous Apex jobs using SOQL. It can access the same fields and information as the Apex Jobs page, as well as additional fields such as JobType, ParentJobId, and ExtendedStatus12.
* View the Apex Status page and view the Apex Flex Queue are two other options, but they are not applicable for the Queueable interface. They are used for different types of asynchronous Apex jobs12.
* View the Apex Status page is an option that allows a developer to see the status and results of the batch Apex jobs and future methods in the Setup menu of Salesforce. It can show the number of batches or methods processed, failed, or remaining, as well as the start time, end time, submitted by, and apex class or method name of the jobs12.
* View the Apex Flex Queue is an option that allows a developer to see and reorder the pending batch Apex jobs that are waiting to be processed in the Setup menu of Salesforce. It can hold up to 100 batch Apex jobs that exceed the limit of 5 concurrent jobs. It can show the apex class name, submitted by, and submitted date of the jobs12.
References:
* 1: Asynchronous Apex
* 2: Cert Prep: Platform Developer I: Automation and Logic