Multiple Choice Question

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Submitted by heartin on Sat, 08/22/2015 - 22:38

QID:

Type:

Multiple Choice Question

Category:

Servlets and JSPs

Tags:

servlets

Question:

How can you ensure that data is updated in a thread safe manner without using singieThreadModel?

Select 2
A. Store the data in a local variable.
B. Store the data in an instance variable.
C. Store the data in the Httpsession object.
D. Store the data in the sarvletContext object.
E. Store the data in the ServletRequest object.

Reference:

http://javajee.com/java-ee-web-components-part1-http-and-servlets

Answer and Explanation (Click to expand)

Answer:

Answer: A,E

Explanation:

A=> Local variables are not shared.

E=> Every request will have a separate thread of execution and a different request object.

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