When using Form Base...

单项选择题When using Form Based Authentication， which pair of fields must be used in the login form？（）

A. j_user and j_id
B. j_id and j_password
C. j_users and j_password
D. j_user and j_password
E. j_login and j_password
F. j_username and j_password

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1.单项选择题
What else must the developer do to ensure that the intended security goal is achieved（）？

A. Create a user called vip in the security realm
B. Define a group within the security realm and call it vip
C. Define a security-role named vip in the development descriptor
D. Declare a security-role-ref for vip in the deployment descriptor

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2.多项选择题Which two authentication mechanisms provide weaker protection than other mechanisms？（）

A. HTTP Basic Authentication
B. Form Based Authentication
C. HTTP Digest Authentication
D. HTTPS Client Authentication

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3.多项选择题Which three are guaranteed to be valid for the element of a web application deployment descriptor？（）

A. FORM
B. DIGEST
C. NORMAL
D. ENCRYPTED
E. CLIENT-CERT

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4.多项选择题
Which the three EL expressions， inserted at line 15， are valid and evaluate to "3"？（）

A. ${vals.2 }
B. ${vals ["2"]}
C. ${vals.index }
D. ${vals[index]}
E. ${vals} [index]
F. ${vals.（vals.index）}
G. ${vals[vals[index-1]]}

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5.单项选择题Given a JSP error page， which implicit object refers to the uncaught Throwable that resulted in th epage being invoked？（）

A. Error
B. Exception
C. Throwable
D. Request error
E. Request exception

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6.多项选择题
Which two are true？（）

A. The function method must have the signaturepublic： String spin（）.
B. The method must be mapped to the logical name “spin” in the web.xml file.
C. The function method must have the signature：public String spinIt（）.
D. The function method must have the signature：public static String spin（）.
E. The function method must have the signature：public static String spinIT（）.
F. The function class must be named Spinner， and must be in the package com.example.

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7.多项选择题Given a web application in which the request parameter product ID contains a product identifier.Which two EL expressions evaluate the value of the product ID？（）

A. ${product ID}
B. ${param.productID}
C. ${params.productID}
D. ${params.productID[1]}
E. ${paramvalues.productID}
F. ${paramValues.productID[0]}
G. ${pageContext.request.productID}

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8.多项选择题
For a given product instance， which three jsp：setProperty attributes must be used to initialized its properties form the HTML form？（）

A. id
B. name
C. type
D. param
E. property
F. reqParam
G. attribute

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9.单项选择题
A session-scoped attribute， product， is stored by a servlet. That servlet then forwards to a JSP page. This attribute holds an instance of the com.Company.
Product class with a name property of “The Matrix” and price property of 39.95. Given the JSP page code snippet：

What is the response output of this JSP page code snippet？（）

A. Default costs 0.0
B. Default costs 49.95
C. Default costs 39.95
D. The Matrix costs 0.0
E. The Matrix costs 49.95
F. The Matrix costs 39.95

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10.单项选择题 A web application uses the HttpSession mechanism to determine if a user is “logged in”. When a user supplies a valid user name and password， an HttpSession is created for that user.
The user has access to the application for only 15 minutes after logging in. The code must determine how long the user has been logged in， and if this time is greater than 15 minutes， must destroy the HttpSession.
Which method in HttpSession is used to accomplish this？（）

A. getCreationTime
B. invalidateAfter
C. getLastAccessedTime
D. getMaxInactiveInterval

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