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COMP 3910 Fullstack > MT Sample Questions > Flashcards

MT Sample Questions Flashcards

1
Q

The basic protocol that drives the web is:

A

HTTP

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2
Q

Java EE deployment descriptors are described and stored in what format?

A

XML (web.xml)

Determine how application is deployed

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3
Q

Which of the following is in JSF but not in JSP or Servlets:
- Navigation
- Session management
- Error handling
- Extensible tag mechanism

A

Navigation

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4
Q

The primary JSF configuration file is

A

faces-config.xml

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5
Q

Which CDI scope requires stored objects to be thread safe?

A

Session scope?

Yes, because multiple access for a single session (thread-safe means safe concurrent action)

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6
Q

Which CDI scope exists from the time an HTTP request is sent until the response is sent back to the client?

A

Request-scoped

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7
Q

Which JSF tag generates an HTTP GET request?A)h:commandButton
B)h:doGet
C)j:commandLink
D)h:link
E)h:command

A

h:link (navigates to a new page without form submission. Uses GET instead of POST)

NOTE: doGet doesn’t exist.

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8
Q

A JSF tag used to organize a page into a tabular format is

A

h:dataTable

(h:panelGrid incorrect because organizes page in a grid but does not create a “tabular” table.)

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9
Q

What JSF tag is used to add html around an HTML element?
A)ui:template
B)ui:decorate
C)ui:component
D)h:composition
E)ui:composition

A

ui:decorate

Adds your xHTML file/composition to existing HTML code by “decorating” it in.

Note: composition tag throws away everything outside of it.

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10
Q

What component is generated by h:dataTable?

A)UIData
B)UIDataTable
C)UITable
D)UIInput
E)Table

A

UIData

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11
Q

Selection criteria can be added to a n SQL query using which clause?A)WHERE
B)JOIN
C)LIKE
D)FROM
E)SELECT

A

SELECT or WHERE.
I assume WHERE because it determines specifically the selection criterias

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12
Q

Containers described in the Java EE specification include
A)Web application conta iner
B)Applet container
C)EJB application container
D)Application client container
E)All of the above

A

I assume all of the above because your java EE program is not always guaranteed to be a web app

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13
Q

One JSF predefined object (in the value expression language) which is not present in JSP Expression Language is
A)param
B)view
C)header
D)requestScope
E)cookie

A

view because JSF uses a component tree view whereas JSP just creates dynamic HTML.

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14
Q

In order for a JSF page to determine the next page to be displayed, it can use
A)next-page
B)from-outcome
C)to-view
D)from-view-id
E)from-action

A

from-view-id

It is not from-outcome because from-view-id is more foundational

For example, you can use implicit navigation without a from-outcome.

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15
Q

Which JSF HTML tag attribute is used to link its component with a backing bean property?A)value
B)binding
C)property
D)backing
E)id

A

value 100%

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16
Q

Which tag is used to specify a JSF template section that can be filled with content by a page using that template?A)ui:composition
B)ui:content
C)f:include
D)ui:insert
E)ui:include

A

ui:insert

Because insert is a placeholder within that page that can be filled with content.

ui:composition on the other hand is the template

17
Q

What JSF standard tag is used to create a repeating grid of data?
A)h:tableGrid
B)h:dataGrid
C)h:repeat
D)h:dataTable
E)c:choice

A

h:dataTable

NOTE: dataGrid does not exist.

NOTE: dataTable creates “repeating grid” by iterating over a collection defined in “value” attribute. Elements represented by “var” attribute

18
Q

Before executing:
con = DriverManager.getConnection(“jdbc:mysql://localhost/inventory”,user,pass);

You would have to:
A)load the JDBC-ODBC bridge driver
B)load a da ta bas e driver
C)load the ODBC driver
D)load the JDBC driver
E)download and install a nonstandard driver

A

Load a database driver
(Software component that allows application to use DBMS)

19
Q

Which of the following distinguishes Enterprise Java development from standard Java development?
A)object serialization
B)multiple threads
C)the Java plug-in
D)web servers
E)application servers

A

Application servers (Wildfly/JBoss)

20
Q

Sockets are generally preferred over RMI or CORBA since they are usually more efficient.

A

True

RMI is remote method invocation

CORBA enables communication between components on multiple platforms

Sockets are lightweight + low overhead (Think of C project).

21
Q

A JSF application is typically deployed as a WAR file

A

True

22
Q

A managed bean in JSF can be stored in a specified scope, as defined in a configuration file.

A

True, although the scope is normally annotated.

23
Q

Since JSF 2.0, the navigation rule to view-id-element can be a value expression which is evaluated at navigation time to return the view ID

A

True, you can use an EL expression for dynamic navigation.

24
Q

When a value expression is used directly in a JSF page the value is always escaped (<changed to < and so forth)

A

False

Special characters in the value are escaped to prevent scripting attacks.

However, it is not always escaped.

25
Q

What are two categories of enterprise user interfacing?

A

Internal enterprise user interfacing

External enterprise user interfacing

OR

Web presentation (html, css, js)
Application presentation (standalone app interface)

26
Q

What does CDI stand for?

A

Contexts and Dependency Injection

27
Q

What steps are taken when the user clicks a JSF command button whose action attribute is a method expression?

A

A faces request triggers the lifecycle:

Restore view
Apply requests
Process validations
Update model values
Invoke application
Render response

(NOTE: initial requests go straight to render response)

28
Q

What JSF tag adds a debug component to the page which can display the state of the component tree and the application’s scoped variables?

A

ui:debug

29
Q

Advantages and disadvantages of using Java for EE development?

A

+ Platform independence
+ Robustness (type checking + OOP)
+ Rich ecosystem and support

  • Learning curve
  • Performance overhead
  • Memory/resources consumption
30
Q

Which version of Jakarta EE?

A

10

31
Q

Which is in JSF but not in Struts, JSP, and Servlets?
a) UI Component Model
b) Declarative backing beans integration
c) Server-side UI Events
d) Automatic markup generation
e) All of the above

A

E

COMP 3910 Fullstack (7 decks)

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