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Exam 1z0-068 topic 1 question 109 discussion

Actual exam question from Oracle's 1z0-068
Question #: 109
Topic #: 1
[All 1z0-068 Questions]

Examine this tnsnames entry from a RAC configuration using a SCAN listener:
HR=(DESCRIPTION=
(LOAD_BALANCE =on)
(ADDRESS=(PROTOCOL=TCP)(HOST=cluster01-scan)(FORT=1521))
(CONNECT_DATA=(SERVICE_NAME=HRSRV)))
Which two statements are true about clients using this entry to connect? (Choose two.)

  • A. The host name in the tnsnames entry must be changed if nodes are added or removed from the Cluster.
  • B. Clients using EZConnect can benefit from connect time load balancing because the tnsnames entry refers to a SCAN listener.
  • C. Client connection requests are automatically balanced across all IP addresses defined for the SCAN.
  • D. A client connection request is received by a SCAN listener that creates the connection to the least-loaded database instance.
  • E. Client connection requests are automatically failed over to another SCAN listener if the chosen SCAN listener is not available.
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Suggested Answer: BD 🗳️
by torynek at April 28, 2021, 1:26 p.m.

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haborym
2 months, 2 weeks ago
B seems wrong because EZCONNECT doesn't use tnsnames.ora.
upvoted 1 times
...
Yoones
8 months, 2 weeks ago
B,D is correct. Because C is wrong, client load is not balanced across all IPs.
upvoted 1 times
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torynek
1 year, 2 months ago
B,C - SCAN redirects to proper local listener which create`s a connection.
upvoted 2 times
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