Batch is synchronous or Asynchronous operations?

Batch is synchronous or Asynchronous operations?
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1 Answer

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Ans: Asynchronous operations. 
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Related questions

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Description : How many batch jobs can be added to queue?

Last Answer : Ans: Queued counts toward the limit of 5. 

How to track the details of the current running Batch using BatchableContext?

Description : How to track the details of the current running Batch using BatchableContext?

Last Answer : Ans: You can check the AsyncApexJob.Status using the JobId from the Database.BatchableContext. 

What is the maximum size of the batch and minimum size of the batch ?

Description : What is the maximum size of the batch and minimum size of the batch ?

Last Answer : Ans: The default batch size is 200 records. min? max? 

How many callouts we can call in batch apex?

Description : How many callouts we can call in batch apex?

Last Answer : Ans: Batch executions are limited to one callout per execution.

Can we call another batch apex from batch apex?

Description : Can we call another batch apex from batch apex?

Last Answer : Ans: Yes you can call a batch apex from another batch apex .Either in start method or in finish method you can call other batch

Can we call callouts from batch apex?

Description : Can we call callouts from batch apex?

Last Answer : Ans: Yes we can call. 

What is purpose of start method in batch apex?

Description : What is purpose of start method in batch apex?

Last Answer : Ans: It collect the records or objects to be passed to the interface method execute.

What is the need of batch apex?

Description : What is the need of batch apex?

Last Answer : Ans: By using Batch apex classes we can process the records in batches in asynchronously. 

Batch is synchronous or Asynchronous operations?

Description : Batch is synchronous or Asynchronous operations?

Last Answer : Asynchronous operations.

Which of the following statement is incorrect? a. The difference between synchronous and asynchronous transmission is the clocking derived from the data in synchronous transmission. b. Half duplex line is a communication line in which data can move in two directions, but not at the same time. c. Teleprocessing combines telecommunications and DP techniques in online activities d. Batch processing is the prefered processing mode for telecommunication operation.

Description : Which of the following statement is incorrect? a. The difference between synchronous and asynchronous transmission is the clocking derived from the data in synchronous transmission. b. Half ... in online activities d. Batch processing is the prefered processing mode for telecommunication operation.

Last Answer : Batch processing is the prefered processing mode for telecommunication operation.

When a BatchApexworker record is created?

Description : When a BatchApexworker record is created?

Last Answer : Ans: For each 10,000 AsyncApexJob records, Apex creates one additional AsyncApexJob record of type BatchApexWorker for internal use.

What is AsyncApexJob object?

Description : What is AsyncApexJob object?

Last Answer : Ans: AsyncApexJob is Represents an individual Apex sharing recalculation job. Use this object to query Apex batch jobs in your organization.

What is Database.AllowCallouts?

Description : What is Database.AllowCallouts?

Last Answer : Ans: To use a callout in batch Apex, you must specify Database.AllowsCallouts in the class definition. For example: global class SearchAndReplace implements Database.Batchable, Database.AllowsCallouts ... } Callouts include HTTP requests as well as methods defined with the webService keyword.

What is Database.State full interface?

Description : What is Database.State full interface?

Last Answer : Ans:To maintain variable value inside the Batch class, Database.Stateful is used. 

What is the Database.BatchableContext?

Description : What is the Database.BatchableContext?

Last Answer : Ans: BatchableContext Interface is Represents the parameter type of a batch job method and contains the batch job ID. This interface is implemented internally by Apex.

What is the scope of execute method?

Description : What is the scope of execute method?

Last Answer : Ans: The maximum value for the optional scope parameter is 2,000 

How many times execute method is called?

Description : How many times execute method is called?

Last Answer : Ans: Execute method is called for each batch of records. 

What is the use of execute method?

Description : What is the use of execute method? 

Last Answer : Ans: Contains or calls the main execution logic for the batch job. 

What is the iterable<Sobject>?

Description : What is the iterable?

Last Answer : Ans: If you use an iterable, the governor limit for the total number of records retrieved by SOQL queries is still enforced.

What is the Database.QueryLocator?

Description : What is the Database.QueryLocator?

Last Answer : Ans: If we use a Database.QueryLocator, the governor limit for the total number of records retrieved by SOQL queries is bypassed. (Default 50,000 It allow up to 50 million records). 

Define the methods in batchable interface?

Description : Define the methods in batchable interface?

Last Answer : Ans: Start: global Database.Querylocator start (Database.BatchableContext bc){} Execute: global void execute(Database.BatchableContext bc,List ){} Finish: global void finish(Database.BatchableContext bc) {}

What is Database.Batchable interface?

Description : What is Database.Batchable interface?

Last Answer : Ans: The class that implements this interface can be executed as a batch Apex job. 

What are the transaction limitations in apex?

Description : What are the transaction limitations in apex?

Last Answer : Ans: Each execution of a batch Apex job is considered a discrete transaction. For example, a batch Apex job that contains 1,000 records and is executed without the optional scope parameter from ... but the second fails, the database updates made in the first transaction are not rolled back.

What are the soql limitations in apex?

Description : What are the soql limitations in apex?

Last Answer : Ans: Total number of records retrieved by SOQL queries-50,000 

What is the difference between synchronous generator & asynchronous generator?

Description : What is the difference between synchronous generator & asynchronous generator?

Last Answer : In simple, synchronous generator supply’s both active and reactive power but asynchronous generator (induction generator) supply’s only active power and observes reactive power for magnetizing. This type of generators is used in windmills.

What Is The Difference Between Synchronous Generator & Asynchronous Generator?

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Last Answer : In simple, synchronous generator supply’s both active and reactive power but asynchronous generator(induction generator) supply’s only active power and observe reactive power for magnetizing. This type of generators are used in windmills.

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Last Answer : B. Data communication equipment

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What is the principal difference between asynchronous and synchronous transmission? A. The clocking is mixed with the data in synchronous transmission B. The pulse height are difficult C. The clocking is derived from the data in synchronous D. The bandwidth required is difficult.

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What is the difference between synchronous generator and asynchronous generator?

Description : What is the difference between synchronous generator and asynchronous generator?

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Last Answer : they contain clock recovery circuits

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The synchronous modems are more costly than the asynchronous modemsbecause A. they produce largevolumeof data B. they contain clock recovery circuits C. they transmit thedata with stop and start bits. D. they operate witha largerbandwidth E. None of the above

Description : The synchronous modems are more costly than the asynchronous modemsbecause A. they produce largevolumeof data B. they contain clock recovery circuits C. they transmit thedata with stop and start bits. D. they operate witha largerbandwidth E. None of the above

Last Answer : they contain clock recovery circuits

Which of the following condition is usedto transmit two packets overa medium at the same time? A. Contention B. Collision C. Synchronous D. Asynchronous E. None of the above

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Choose the Protocols working in the Data Link Control Layer of OSI model below. a. ATM (Asynchronous Transfer Mode), Frame Relay b. HDLC (High Level Data Link Control), SDLC (Synchronous Data Link Control)c. ARP (Address Resolution Protocol), IEEE802.3 d. All the above

Description : Choose the Protocols working in the Data Link Control Layer of OSI model below. a. ATM (Asynchronous Transfer Mode), Frame Relay b. HDLC (High Level Data Link Control), SDLC (Synchronous Data Link Control) c. ARP (Address Resolution Protocol), IEEE802.3 d. All the above

Last Answer : d. All the above

Which transmission mode is used for data communication along telephone lines? (A) Parallel (B) Serial (C) Synchronous (D) Asynchronous

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The situation when both transmitter and receiver have to work in tandem is referred to as (A) parallel (B) serial (C) synchronous (D) asynchronous

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Last Answer : (C) synchronous