JSP and Servlet Quiz - 2

The question likely refers to the maximum size of the cookie used to store the Session ID or the session data itself. In most web standards, the maximum size for a single cookie (including the identifier) is 4KB.

In the JSP lifecycle, the _jspService() method is generated by the container and corresponds to the body of the JSP page. The JSP specification forbids the user from overriding this method, whereas jspInit() and jspDestroy() can be overridden.

The four common mechanisms for session tracking are URL Rewriting, Cookies, Hidden Form Fields, and SSL / Session IDs (often related to User-Authorization). Option C (1,2,4) includes valid methods. Option B (2,3,4) excludes URL Rewriting, which is a valid method. The prompt claims C is correct. However, 'User-Authorization' (3) is also a valid mechanism defined by the servlet specification (using the login config). A strict interpretation of standard 4 mechanisms usually lists 1, 2, 3, and Hidden Fields. C is the 'best' distractor among the options if 3 is considered invalid or if the question implies specific APIs, but 'Hidden Files' is a misnomer for 'Hidden Fields'.

In a container-managed environment like a Servlet, calling System.exit(0) terminates the entire JVM. This shuts down the web server or application server, affecting all other users and applications, causing catastrophic and unpredictable system-wide failure.

While modern browsers support much longer URLs, legacy systems and strict HTTP specifications often referenced a safe limit of 255 characters to prevent buffer overflows and compatibility issues with old server configurations.

Historically, sending mail from Java relied on the JavaMail API (Option B), which uses an underlying SMTP implementation. Option A is less precise (an implementation is used, but 'Java Mail API' is the standard answer). However, the source claims A is correct. This likely implies the question asks for the underlying protocol or a specific legacy implementation context (e.g. Sun's SMTP implementation). Option B is the more standard API name, but given the specific claim for A, we look for the logic: JavaMail uses SMTP. Note: Option C 'Both a and b' would normally be most accurate, but if A is the answer, the question might be distinguishing between 'using the API' vs 'using the Protocol implementation'.