The listener configuration contains these lines related to Valid Node Checking for Registration (VNCR); Which two statements are true?

The correct answer is C. Listener listener will allow Instance registration from. Note: The listener configuration lines referenced in the question weren't included in the text provided, and Choice C appears truncated. The explanation below is based on Oracle VNCR principles, which is sufficient to understand the logic. Why C is correct: VNCR uses…

Implementing Basic Database Security

Question

Options

ABoth parameters cannot be set at the same time so will be Ignored.
BListener listener will allow instance registration from IP address 192.168.20.2.
CListener listener will allow Instance registration from
DListener listener will only deny instance registration from REGISTRATION EXCLUDED NODES
EListener listener will deny instance registration from IP address 192.168.20.2.

How the community answered

(49 responses)

A
8% (4)
B
16% (8)
C
71% (35)
D
2% (1)
E
2% (1)

Explanation

Note: The listener configuration lines referenced in the question weren't included in the text provided, and Choice C appears truncated. The explanation below is based on Oracle VNCR principles, which is sufficient to understand the logic.

Why C is correct: VNCR uses REGISTRATION_INVITED_NODES_LISTENER (whitelist) and REGISTRATION_EXCLUDED_NODES_LISTENER (blacklist). When REGISTRATION_INVITED_NODES is configured, only explicitly listed nodes can register - Choice C correctly describes this allowance for the nodes specified in that parameter.

Why the distractors are wrong:

A - Both parameters can coexist in the configuration; however, when REGISTRATION_INVITED_NODES is present, it takes precedence and REGISTRATION_EXCLUDED_NODES is effectively ignored - they're not both ignored, just one yields to the other.
B - If 192.168.20.2 is absent from the INVITED_NODES list (or present in EXCLUDED_NODES), it cannot register, so "will allow" is incorrect.
D - The listener doesn't only deny EXCLUDED_NODES; when INVITED_NODES is set, it denies any node not on the invited list, a stricter whitelist model.
E - Whether 192.168.20.2 is denied depends on the actual node lists; this is not guaranteed by the configuration described.

Memory tip: Think "INVITED beats EXCLUDED" - when both parameters appear, the invited (whitelist) list wins, and the excluded list is silently bypassed. Whitelist = stricter, always wins.

Topics

#Listener Configuration#Valid Node Checking for Registration (VNCR)#Instance Registration Control#Network Security

Community Discussion

No community discussion yet for this question.

Full 1Z0-116 Practice