Using Java Web Start, you are going to deploy a new Java application from the IT development
server to all the computers in your company’s network. Which three actions can an unsigned JAR
file in the Java Web Start sandbox take? (Choose three.)
A.
Persist session data
B.
Access network printers from the system
C.
Use the network to access an arbitrary file server
D.
Use the JNLP APIs to interact with the local file system
E.
Use the network to access the host from which the application was downloaded
Explanation:
ADE is correct answer.
The Java Web Start Sandbox
Unsigned JAR files launched by Java Web Start run in the sandbox, meaning they cannot access local files or the
network. The purpose of the sandbox is to:
• Protect users against malicious code that could affect local files.
• Protect enterprises against code that could to access and destroy data on networks.
While the application’s functionality is restricted, Java Web Start safely provides flexibility to developers to solve
common tasks. For example, an application in the sandbox can:
• Use the network to access the host from which the application was downloaded.
• With the user’s permission, access a local printer.
• Persist session data.
• Use the JNLP APIs to interact with the local file system.