单选题Given this fragment in a servlet： 23.if（req.isUserInRole（"Admin"）） { 24.// do stuff 25.} And the following fragment from the related Java EE deployment descriptor： 812. 813.Admin 814.Administrator 815. 900. 901.Admin 902.Administrator 903. What is the

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单选题

Given this fragment in a servlet： 23.if（req.isUserInRole（"Admin"）） { 24.// do stuff 25.} And the following fragment from the related Java EE deployment descriptor： 812. 813.Admin 814.Administrator 815. 900. 901.Admin 902.Administrator 903. What is the result？（）

Line 24 can never be reached.

The deployment descriptor is NOT valid.

If line 24 executes， the user’s role will be Admin.

If line 24 executes， the user’s role will be Administrator.

If line 24 executes the user’s role will NOT be predictable.

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相似问题和答案

第1题：

WhichtwoclassesorinterfacesprovideagetSessionmethod?()

A.javax.servlet.http.HttpServletRequest

B.javax.servlet.http.HttpSessionContext

C.javax.servlet.http.HttpsServletResponse

D.javax.servlet.http.HttpSessionBindingEvent

E.javax.servlet.http.HttpSessionAttributeEvent

参考答案：A, D

第2题：

Giventhisfragmentinaservlet：23.if（req.isUserInRole（"Admin"））{24.//dostuff25.}AndthefollowingfragmentfromtherelatedJavaEEdeploymentdescriptor：812.<security-role-ref>813.<role-name>Admin</role-name>814.<role-link>Administrator</role-link>815.</security-role-ref>900.<security-role>901.<role-name>Admin</role-name>902.<role-name>Administrator</role-name>903.</security-role>Whatistheresult？（）

A.Line24canneverbereached.

B.ThedeploymentdescriptorisNOTvalid.

C.Ifline24executes，theuser’srolewillbeAdmin.

D.Ifline24executes，theuser’srolewillbeAdministrator.

E.Ifline24executestheuser’srolewillNOTbepredictable.

参考答案：D

第3题：

下面关于Fragment的描述,正确的是()。

A.使用Fragment，能使程序更加合理和充分地利用屏幕的空间

B.Android4.0版本开始提供Fragment类

C.Fragment可以代替Activity使用

D.Fragment不能嵌入到Activity中

参考答案：A

第4题：

A、Line 24 can never be reached.
B、The deployment descriptor is NOT valid.
C、If line 24 executes， the user’s role will be Admin.
D、If line 24 executes， the user’s role will be Administrator.
E、If line 24 executes the user’s role will NOT be predictable.

正确答案:D

第5题：

Given:WhatistheresultofcallingsearchwithavalidListimplementation?()

A.0

B.Theresultisundefined.

C.a

D.2

E.1

F.c

G.b

参考答案：B

第6题：

Given：11.<servlet>12.<servlet-name>catalog</servlet-name>13.<jsp-file>/catalogTemplate.jsp</jsp-file>14.<load-on-startup>10</load-on-startup>15.</servlet>Whichtwoaretrue？（）

A.Line13isnotvalidforaservletdeclaration.

B.Line14isnotvalidforaservletdeclaration.

C.Oneinstanceoftheservletwillbeloadedatstartup.

D.Teninstancesoftheservletwillbeloadedatstartup.

E.Theservletwillbereferencedbythenamecataloginmappings.

参考答案：C, E

第7题：

Given:Which code fragment, inserted at line 23, allows the code to compile?()

A.df = new DateFormat();

B.df = Date.getFormat();

C.df = date.getFormat();

D.df = DateFormat.getFormat();

E.df = DateFormat.getInstance();

参考答案：E

第8题：

关于GetPodAction定义,下面赋值正确的是()type Fragment interface {Exec(transInfo *TransInfo) error}type GetPodAction struct {}func (g GetPodAction) Exec(transInfo *TransInfo) error {...return nil}

A. var fragment Fragment = new(GetPodAction)

B. var fragment Fragment = GetPodAction

C. var fragment Fragment = &GetPodAction{}

D. var fragment Fragment = GetPodAction{}

参考答案：ACD

第9题：

Which two prevent a servlet from handling requests.？（）

A、 The servlet’s init method returns a non-zero status.
B、 The servlet’s init method throws a Servlet Exception
C、 The servlet’s init method sets the Servlet Response’s context length to 0
D、 The servlet’s init method sets the Servlet Response’s content type to null.
E、 The servlet’s init method does NOT return within a time period defined by the servlet container.

正确答案:B,E

第10题：

Klenow 片段(Klenow fragment)

正确答案:E.coliDNA聚合酶I经部分水解生成的C末端605个氨基酸残基片段。该片段保留了DNA聚合酶I的5ˊ-3ˊ聚合酶和3ˊ-5ˊ外切酶活性，但缺少完整酶的5ˊ-3ˊ外切酶活性。

Given this fragment in a servlet： 23.if（req.isUserInRole（"Ad

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