SAP NetWeaver: Key Questions and Answers

Frequently Asked Questions About SAP NetWeaver

1. The Internet Communication Manager (ICM)

A. Replaced SAP ITS. 
B. Allows SAP NetWeaver Application Server to process HTTP requests. 
C. Allows the ABAP stack and the Java stack to exchange data. 

2. The Java stack and the ABAP stack of an SAP NetWeaver Application Server must always be installed together.

A. True 
B. False 

3. Each work process is assigned a type of task that can be performed. Which statements related to this are true? (Select all that apply.)

A. To switch a work process type requires a restart of the SAP NetWeaver Application Server ABAP. 
B. All work processes have the same structure. 
C. All work processes communicate with the database. 
D. All work processes communicate with the dispatcher. 
E. A work process can communicate directly with an external system through a Remote Function Call. 
F. It is possible to have multiple enqueue work processes on an SAP NetWeaver Application Server. 
G. It is possible to have multiple spool work processes on an ABAP application server. 

4. What is the difference between SAP Basis and SAP NetWeaver?

A. There is no difference; the name change was driven by marketing alone. 
B. All versions of SAP NetWeaver require the use of Unicode. 
C. All versions of SAP NetWeaver include the ability to handle HTTP requests. 

5. The dispatcher handles all communication between users, work processes, and other (external) systems.

A. True 
B. False 

6. The ABAP messaging channels (AMC) use the WebSocket protocol to gain two-way communication instead of HTTP.

A. True 
B. False 

Answers and Explanations

1. Correct Answer: B

SAP NetWeaver 6.10 introduced new technologies built on a scalable infrastructure to process HTTP requests directly from the Internet. This functionality was enabled by the SAP kernel, which included the Internet Communication Manager (ICM) to process HTTP requests.

2. Correct Answer: B

The SAP NetWeaver Application Server can be installed with either ABAP, Java, or both stacks, depending on system requirements. While some SAP NetWeaver components require both stacks, others can function independently using only one.

3. Correct Answers: B, D, F, G

  • B: All work processes have the same structure, making them interchangeable. 
  • D: All work processes communicate with the dispatcher, which assigns user requests to them. 
  • F: It is possible to have multiple enqueue work processes running in SAP NetWeaver. However, there is only one lock table in the system. 
  • G: An ABAP application server can have multiple spool work processes. 

Clarifications:

  • A (Incorrect): You can switch a work process type while the system is running. 
  • C (Incorrect): Not all work processes communicate with the database. 
  • E (Incorrect): A work process does not communicate directly with an external system via Remote Function Call (RFC); instead, it uses SAP Gateway. 

4. Correct Answer: C

SAP NetWeaver differs from SAP Basis as it evolved into a web-based platform. This means: 
  • It supports HTTP request handling. 
  • It includes a Java stack in addition to the ABAP stack. 
  • It provides integration capabilities beyond traditional SAP Basis. 

5. Correct Answer: B

The dispatcher manages communication between users and work processes but does not handle external system communication. Instead, external communication is managed through the SAP Gateway.

6. Correct Answer: B

ABAP Push Channels (APC) use WebSocket for two-way communication, whereas ABAP Messaging Channels (AMC) facilitate communication between ABAP programs, not via WebSocket.

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