Câu 1: Which of the following is an advantage of Web applications mentioned in the document?

Platform independence Higher maintenance costs Restricted visibility Difficult access to information

Câu 2: Which protocol offers 'Reduced Lag' and 'Stronger Security' compared to its predecessors?

HTTP/1.0 HTTP/1.1 HTTP/2 HTTP/3

Câu 3: What is the primary role of a Web container in a Java Web application?

To design visually appealing Web pages To manage servlets and provide a runtime environment To act as a database server To provide client-side scripting support

Câu 4: In the Web application workflow, which component processes the request and generates the response?

Request Object Servlet Web Server Browser

Câu 5: Which file extension is used to package Java Web applications for deployment?

.jar .war .exe .zip

Câu 6: Which HTTP method is typically used to retrieve data from a server?

POST PUT GET DELETE

Câu 7: What was the previous name of the Jakarta EE platform?

Java SE Java EE Jakarta JS Java ME

Câu 8: Which Jakarta EE profile contains Core, Web services, plus Mail and Messaging?

Web Profile Platform Profile Core Profile Micro Profile

Câu 9: What is a disadvantage of using Jakarta EE for small applications?

Lack of scalability Complexity Platform dependence Proprietary solutions

Câu 10: Which Apache Tomcat responsibility involves executing and unloading servlet classes?

Designing HTML pages Managing database tables Servlet management Writing Java code

Câu 11: Which directory in a Web application structure contains the 'web.xml' file?

src WEB-INF lib bin

Câu 12: Which servlet lifecycle method is called exactly once when the servlet is first loaded?

service() destroy() init() doGet()

Câu 13: Which HTTP status code indicates 'Resource not found'?

500 401 404 301

Câu 14: Which technique for session tracking involves adding data to the end of a URL?

Cookies URL rewriting Hidden form fields HttpSession

Câu 15: What is the purpose of the 'invalidate()' method in HttpSession?

To create a new session To destroy data in a session for security To refresh the page To store a cookie

Câu 16: Which JSP element is used to embed Java code within HTML?

Expression Scriptlet Directive Declaration

Câu 17: Why do servlets generally run faster than JSP pages during initial execution?

JSP is not Java-based JSP takes time to compile into servlets Servlets do not use a container Servlets use only HTTP/3

Câu 18: Which JSP directive is used to insert content of another resource at runtime?

page taglib include forward

Câu 19: What is a 'filter chain' in Jakarta Servlets?

A list of database queries More than one filter existing between client and servlet A series of HTML tags Sequence of JSP lifecycle methods

Câu 20: Which technology is an ORM that persists entities in a database?

JDBC JPA JSON JSF

Câu 21: What is the main advantage of the DAO pattern?

Faster page rendering Separates business logic from database access Automatic HTML generation Increases network lag

Câu 22: In asynchronous processing, what happens to a servlet thread waiting for a resource?

It is terminated immediately It is returned to the thread pool It blocks all other threads It creates a new JSP page

Câu 23: Which JSP implicit object represents the output stream sent to the client?

request session out config

Câu 24: In the MVC architecture, which component typically acts as the controller?

JSP Page Servlet Database HTML File

Câu 25: Which operator is used in JSP EL to access the value of a variable?

Dot operator (.) Plus operator (+) Arrow operator (->) Colon operator (:)

Câu 26: What does the 'isThreadSafe' option in a JSP page identify?

If the page is encrypted If the page can process multiple threads simultaneously If the database is secure If the JSP is using taglib

Câu 27: Which HTTP method is used to update an existing resource?

GET PUT DELETE HEAD

Câu 28: What is the primary technology used for communication on the Web?

HTML and HTTP Java and C++ SQL and Oracle XML and JSON

Câu 29: Which component manages mapping URLs to specific servlets?

Web Server Web Container Database Server Client Browser

Câu 30: The Microservices architecture is characterized as being:

A single-block application Modular and lightweight Purely client-side Based only on raw data logs

Câu 31: Which Jakarta EE profile is tailored for Web application services?

Core Profile Platform Profile Web Profile Persistence Profile

Câu 32: Which IDE is frequently used for Java, Ruby, and Python development?

Visual Studio Eclipse IDE IntelliJ IDEA NetBeans

Câu 33: What is the default port for Apache Tomcat mentioned in the guide?

80 443 8080 3306

Câu 34: What is the primary function of the 'web.xml' file?

To store database passwords To describe deployment details of the application To provide CSS styles To compile Java classes

Câu 35: Which package contains classes for HTTP-specific servlets?

jakarta.servlet jakarta.servlet.http jakarta.enterprise java.sql

Câu 36: Which method retrieves a specific initialization parameter for a servlet?

getInitParameterNames() getInitParameter(String name) setAttribute() getWriter()

Câu 37: What does HTTP status code 500 indicate?

Bad Request Unauthorized Internal Server Error Moved Permanently

Câu 38: How are 'Hidden Form Fields' implemented in HTML?

Using encrypted tags Using <input type="hidden"> Stored only on the server Blocked by firewalls

Câu 39: What is a 'Cookie' in web development?

A small Java program Information sent by server and stored by browser A database table An error code

Câu 40: Which setting prevents cookie access by client-side scripts?

setSecure() setHttpOnly(true) invalidate() setMaxInactiveInterval()

Câu 41: What does JSON stand for?

Java Server Object Notation JavaScript Object Notation Java Simple Output Network Java Standard Object Node

Câu 42: Which JSP phase converts the page into a Servlet?

Execution Translation Destruction Request

Câu 43: A 'scriptlet' in JSP contains:

CSS blocks Java code within HTML SQL statements only JavaScript functions

Câu 44: Which JSP directive links the page to custom tags?

page include taglib action

Câu 45: Which component intercepts requests between client and servlet?

Servlet Filter Listener Context

Câu 46: What is an 'annotation' in Servlet API?

Database index Metadata attached to code elements Visual theme Security certificate

Câu 47: Which annotation is used for file upload configuration?

@WebServlet @MultipartConfig @WebFilter @Entity

Câu 48: What does JDBC stand for?

Java Database Connection Java Database Connectivity Joint Database Core Java Data Binding Code

Câu 49: In JPA, a persistent object (POJO) is called an:

Servlet Entity Context Filter

Câu 50: Which mechanism uses XMLHttpRequest for asynchronous updates?

SQL AJAX JPA JDBC

Câu 51: What is a key difference between HTTP 1.0 and 1.1?

1.1 is stateless 1.1 supports persistent connections 1.1 only works with JSPs There is no difference

Câu 52: Which JSP implicit object provides access to all others?

pageContext application session response

Câu 53: In MVC, which component handles presentation?

Controller Model View Service

Câu 54: JSP Model II is an implementation of which pattern?

Singleton MVC DAO Factory

Câu 55: Which EL operator represents logical 'AND'?

|| && ! ==

Câu 56: What is the purpose of a TLD file?

To style the page To map function names to EL To encrypt the database To define project name

Câu 57: Which method sets an attribute in application scope?

getAttribute() setAttribute() removeAttribute() setInitParameter()

Câu 58: What does 'beginRequest()' do in JDBC 4.3?

Closes connection Informs driver a request is starting Executes SQL Creates table

Câu 59: Which interface supports asynchronous processing in Servlets?

AsyncContext AsyncListener ServletContext HttpServlet

Câu 60: What information does a Response Header typically contain?

User passwords Metadata like file size and type HTML body content Database table list

Câu 61: Which corporation managed Java EE after Sun Microsystems?

Microsoft Oracle Corporation Google IBM

Câu 62: The Jakarta EE Web Profile is intended for:

Foundational Services only Web Applications Services Batch Processing Mobile Development

Câu 63: Eclipse IDE feature for annual updates and plug-ins is:

Perspective Software Update Code Completion Workspace

Câu 64: The 'lib' folder in a WAR file is used to store:

HTML files Compiled .class files JAR library files Deployment descriptors

Câu 65: Which lifecycle method is called when a servlet is taken out of service?

init() service() destroy() stop()

Câu 66: What does a '302 Found' status code represent?

Permanent move Temporary replacement/redirect Success Server down

Câu 67: Which session tracking technique is described as 'Lowest priority'?

Cookies URL rewriting Hidden form fields JSON Binding

Câu 68: What is 'JSON Serialization'?

Decoding string to object Converting Java objects to JSON string Deleting a JSON file Formatting HTML

Câu 69: Which JSP tag outputs simple values or calculation results?

Scriptlet Expression Declaration Directive

Câu 70: A listed demerit of using Servlets is:

Platform dependence Extensive knowledge required High infrastructure cost Slow execution

Câu 71: Which MVC component contains business logic functions?

View Controller Model Dispatcher

Câu 72: What does the 'taglib' directive specify?

CSS location Custom tag library description Page encoding Error logs

Câu 73: The Filter API includes which interfaces?

ServletConfig Filter, FilterConfig, FilterChain JDBC Driver AsyncContext

Câu 74: What is 'Server Push' in Servlet 6.0?

Client sending data Server sending resources pre-emptively Deleting database records Error handling

Câu 75: Which listener monitors session creation/destruction?

ServletContextListener HttpSessionListener ServletRequestListener HttpSessionAttributeListener

Câu 76: Which JSP implicit object shares data across the entire application?

session application request page

Câu 77: In JSP EL, 'Coercion' refers to:

Deleting variables Automatic type conversion Encrypting URLs Private method calls

Câu 78: Which component manages servlet lifecycle and access rights?

Browser Web Container SQL Driver HTML Validator

Câu 79: Platform independence in Web apps means:

No internet needed Cross-OS access via browser Auto data entry Lower security risks

Câu 80: Which JSP element provides page-wide info during translation?

Expression Directive Scriptlet Comment

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