Riverbed RCSP-APM 499-01 Questions & Answers

• Question 1:

  Refer to the exhibit.

  

  In the diagram, what does the WIN<<7=17408 (in the red rectangle) indicate?

  A. TCP window scaling

  B. Maximum transmission unit (MTU)

  C. TCP maximum segment size

  D. Packet size

  Correct Answer: A

• Question 2:

  After downloading Web Transaction Analysis page view packets from AppResponse Xpert and opening AppTransaction Xpert, you are prompted to enter Transaction Trace Warehouse information. Why did the prompt appear and what does it mean?

  A. The prompt always appears when you use this workflow. It means AppResponse Xpert passed a parameter to AppTransaction Xpert, causing it to search the specified Transaction Trace Warehouse server for supporting server trace information.

  B. The AppTransaction Xpert preferences were set to always import Transaction Trace Warehouse trace data no matter how the packets were obtained.

  C. While importing the packets, AppTransaction Xpert noticed HTTP headers indicating the presence of transaction tracing. It is asking for the hostname and credentials of the appropriate Transaction Trace Warehouse server to download the specific transaction traces referenced in the HTTP headers of the packet trace.

  D. When the AppInternals Xpert instrumentation is set to create trace files, it marks the TCP headers for each packet in that transaction so AppTransaction Xpert knows to look for supporting transaction data.

  Correct Answer: C

• Question 3:

  In a three-tier application with a web front-end, application middle tier, and database back- end, where is the best instrumentation point for end-to-end visibility?

  A. It is best to instrument at all tiers for maximum visibility.

  B. It is best to instrument at the web tier, since that is typically the client entry point into the application.

  C. It is best to instrument at the application tier, since it sits between the web and database tiers.

  D. It is best to instrument at the database tier, since it holds the data the client is requesting.

  Correct Answer: A

• Question 4:

  Refer to the exhibit.

  

  This graph represents the number of requests waiting for a response across various tiers. With load being generated at a constantly increasing rate, which tier is the bottleneck and why?

  A. The Web tier is the bottleneck because it has the most open requests waiting for a response.

  B. The DB tier is the bottleneck because it is the lowest tier that is clearly not handling requests in time.

  C. The App tier is the bottleneck because it is the first tier not handling the same number of requests as the tier above it.

  D. The Web tier is the bottleneck because at an Offered Load of 300, there are still 50 requests waiting from the Web tier, and it never recovers. The lower tiers do not get the requests passed to them because the Web tier is not processing fast enough.

  E. The App tier is the bottleneck because the DB tier is handling everything the App tier sends it.

  Correct Answer: D

• Question 5:

  When investigating reports of web page performance problems, which of these integration pathways could be used? (Select 3)

  A. RPM Dashboards -> AppResponse Xpert -> AppInternals Xpert -> Transaction Trace Warehouse

  B. BrowserMetrix -> AppTransaction Xpert

  C. Transaction Trace Warehouse -> AppInternals Xpert -> AppResponse Xpert -> AppTransaction Xpert

  D. RPM Dashboards -> BrowserMetrix -> Transaction Trace Warehouse

  E. RPM Dashboards -> AppInternals Xpert -> AppTransaction Xpert

  Correct Answer: ACD

• Question 6:

  Which Riverbed Performance Management solution requires that agents be installed on servers?

  A. AppInternals Xpert

  B. AppResponse Xpert

  C. AppSQL Xpert

  D. Riverbed Performance Management Dashboards

  Correct Answer: A

• Question 7:

  The five functional dimensions of Application Performance Management include: (Select 3)

  A. End-user experience monitoring

  B. User-defined transaction profiling

  C. Application component deep dive

  D. Network device monitoring

  E. Status polling

  Correct Answer: ABC

• Question 8:

  A user imported HTTPS packets for analysis in AppTransaction Xpert from AppResponse Xpert. Although the user was able to see the decrypted packets in AppResponse Xpert, he only sees encrypted packets in AppTransaction Xpert. Why ?

  A. The private key might not be imported in AppTransaction Xpert from AppResponse Xpert.

  B. AppTransaction Xpert cannot analyze HTTPS packets.

  C. The user must provide the SSL to AppTransaction Xpert.

  D. AppTransaction Xpert needs TCP handshaking packets to decrypt SSL traffic.

  Correct Answer: C

• Question 9:

  When diagnosing a user-reported performance problem for an application, what is the best conclusion to draw after analyzing the server log file and finding nothing wrong?

  A. The servers cannot be the problem.

  B. It must be the network.

  C. There is no problem. The user's experience is normal and expected.

  D. No conclusion can be made due to insufficient data.

  E. More monitoring and analysis is required to identify and eradicate monitoring gaps at the end user, network, server, and back-end dependencies.

  Correct Answer: E

• Question 10:

  Which Riverbed Performance Management solution leverages the same packet collection as AppResponse Xpert but looks deep into SQL performance and usage without agents?

  A. AppSQL Xpert

  B. CX-Tracer

  C. AppDatabase Xpert

  D. AppSensor Xpert

  Correct Answer: A