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Early Adopter JXTA Quiz

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By Sing Li
April 2002

This short quiz is based on Sing Li's book, Early Adopter JXTA. Test your knowledge of this new peer-to-peer technology such as JXTA's core peergroup service, core protocols and pipes.

Choose one answer for each question, then click Submit to see how you scored.

JXTA stands for:

A. Java eXtended Transport Architecture

B. JuXTAposition

C. Java XML Transformation Architecture
JXTA is designed to work over:

A. any TCP/IP network, such as the Internet

B. any network on any protocol
Which of the following is a discovery mechanism used by JXTA?

A. CAN

B. IP-Multicast

C. Rendezvous (broker)

D. All of the above
The JXTA relay service:

A. Allows through-the-firewall access for JXTA peers

B. Is used to relay messages between rendezvous

C. All of the above
Which one of the following is not a core Peergroup service?

A. Pipe service

B. Discovery service

C. Rendezvous service
Which one of the following is not a core JXTA protocol?

A. Peer Discovery Protocol

B. P2P Network Initialization Protocol

C. Peer Information Protocol
Which one of the following function does the rendezvous carry out?

A. Cache advertisements

B. Answers queries from peers

C. Answer queries from other rendezvous

D. All of the above
A JXTA router:

A. stores a table of paths to known peers

B. routes messages as IP packets

C. provides virtualization of network addresses
Which of the following is not a type of JXTA Pipe?

A. unicast

B. propagate

C. broadcast
A ModuleSpecAdvertisement is a kind of:

A. peer advertisement

B. group advertisement

C. service advertisement
In JXTA, HTTP:

A. is at the same level as TCP/IP as an Endpoint Protocol

B. is implemented on top of TCP/IP at the transport level

C. cannot work together with TCP/IP when a firewall exists
JXTA requires an Endpoint Protocol to support, as a minimum:

A. bi-directional transfer of binary messages

B. unidirectional reliable transfer of binary messages

C. unidirectional un-reliable transfer of text messages
JXTA Shell is:

A. a JXTA application

B. a utility of the JXTA OS

C. built into basic JXTA
A PeerID in JXTA:

A. can be generated independently and used

B. must be registered with www.jxta.org

C. can be mapped to a standard URL
Project JXTA is an:

A. open source project

B. SUN managed project welcoming external input

C. part of the JCP process


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