Load Runner Interview Questions and Answers
Question - 81 : - How do you load a load runner Agent?
Answer - 81 : -
While running the scenario, LoadRunner controller instructs the remote agent dispatcher to launch LoadRunner agent. The controller instructs the LoadRunner agent to initialize, run, pause and stop the vusers.
Question - 82 : - What is the difference between hits/second and requests/second?
Answer - 82 : -
Hits per second mean the number of hits the server receives in one second from the vuser.
Request per second is the number of request the vuser will request from the server.
Question - 83 : - What are the advantages of load runner?
Answer - 83 : -
Following are the advantages of Load Runner:
- Reduces human intervention
- Reduces the requirement of the systems
- Helps in the better use of time and money
- Effective utilization of automation
- Single point execution
Question - 84 : - What is the vuser in the scenario?
Answer - 84 : -
The vuser is the virtual users who can simulate the real users. The virtual users who take the place of real users’s operating client software, such as IE sending requests using the HTTP protocol to IIS or Apache web servers.
Question - 85 : - How do we write a user-defined function in LoadRunner?
Answer - 85 : -
Use should create the external library that contains the function. This library must then be added to the bin directory of VuGen. And then, the user-defined function can be assigned as a parameter.
Question - 86 : - What are the changes that can be made to run-time settings?
Answer - 86 : -
There are four run-time settings that can be made:
- Pacing: This contains iteration count.
- Log: Logging can be set to standard or disabled.
- Think Time: Capable of setting think time to be ignored or replaced.
- General: Allows the setting of Vusers for processes or multi-threading.
Question - 87 : - How can we find database related issues?
Answer - 87 : -
Monitors and the Data Resource Graph can be used to find database related issues. LoadRunner allow the tester to specify the resource that needs to be measured before the controller is run.
Question - 88 : - How many types of graphs are available in LoadRunner?
Answer - 88 : -
There are five types of graphs:
- Network delay time graph – displays the time that elapses between request and response
- Two transaction response time graphs – one translation response time graph for load and another one for percentile
- Hits/second graph – Shows application traffic volume
- Pages download/second graph – shows the rate at which pages are downloaded per second
Question - 89 : - How can performance bottlenecks be identified?
Answer - 89 : -
Monitors can be used to detect a performance bottlenecks. These include network, web server, application server, and database server monitors.
These monitors can be used to locate trouble spots in scenarios that cause an increase in response time and throughput, network delays, performance response time, hits/second, etc.
Question - 90 : - What is a ramp up and how it can be set?
Answer - 90 : -
Ramp up is gradually increasing the load on a server and can be simulated by gradually increasing the number of Vusers. This feature can be found in the Scenario Scheduling Options.