Exam 1z0-134 topic 1 question 38 discussion

Actual exam question from Oracle's 1z0-134

Question #: 38
Topic #: 1

You intend to introduce ordering in message processing for your JMS destination by creating a destination key.
Which statement is true about the JMS Destination Key configuration? (Choose the best answer.)

A. A JMS Destination Key cannot be specified using WLST.
B. A JMS Destination Key cannot be used to sort messages in a Last In First Out order.
C. A JMS Destination Key allows a user-defined sort key.
D. A Destination Key can be applied to the message body.

Show Suggested Answer

Suggested Answer: A 🗳️
The WebLogic Server Administration Console enables you to configure, modify, target, and delete destination key resources in a system module.
Incorrect Answers:
B: As messages arrive on a specific destination, by default they are sorted in FIFO (first-in, first-out) order, which sorts ascending based on each message's unique JMSMessageID. However, you can use a destination key to configure a different sorting scheme for a destination, such as LIFO (last-in, first-out).
C: Attribute Sort Key: The message sort key or the name of a message header field on which to sort. Message header field keys start with the letters JMS and ignore the key type setting.
Valid values only (user-defined sort key not possible):
✑ JMSMessageID
✑ JMSTimestamp
✑ JMSCorrelationID
✑ JMSPriority
✑ JMSExpiration
✑ JMSType
✑ JMSRedelivered
✑ JMSDeliveryTime
Reference:
https://docs.oracle.com/cd/E13222_01/wls/docs90/jms_admin/basic_config.html#1105573

by Shunpin at April 3, 2022, 8:43 a.m.

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TY_26

2 months, 1 week ago

Selected Answer: C

Destination Keys digunakan untuk mengurutkan pesan berdasarkan header atau properti pesan, termasuk properti yang ditentukan pengguna. Mereka memungkinkan sorting (yang mempengaruhi urutan dalam FIFO), bukan LIFO.

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