200-901 Infrastructure and Automation Practice Question
Which TWO are valid capabilities advertised during a NETCONF session?
⚠ Common exam trap
Cisco often tests the exact version numbers of NETCONF capabilities, and the trap here is that candidates assume all capabilities use version 2.0 (confusing them with YANG module revisions or other protocols), but in reality, the standard NETCONF capabilities defined in RFC 6241 are all version 1.0.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
urn:ietf:params:netconf:capability:url:1.0
The URL capability (urn:ietf:params:netconf:capability:url:1.0) is a standard NETCONF capability that allows a client to specify a URL as the source or target of operations like <copy-config> or <edit-config>. Option D is correct because urn:ietf:params:netconf:base:1.0 is the mandatory base capability that every NETCONF session must advertise, as defined in RFC 6241, indicating support for the core NETCONF protocol operations.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
urn:ietf:params:netconf:capability:url:1.0
Why this is correct
This is the URL capability for NETCONF.
- ✗
urn:ietf:params:netconf:capability:writable-running:2.0
Why it's wrong here
The correct capability is :writable-running with base 1.0, not 2.0.
- ✗
urn:ietf:params:netconf:capability:validate:2.0
Why it's wrong here
The validate capability is :validate:1.0, not 2.0.
- ✓
urn:ietf:params:netconf:base:1.0
Why this is correct
This is the base NETCONF capability for version 1.0.
- ✗
urn:ietf:params:netconf:capability:interleave:1.0
Why it's wrong here
Interleave is not a standard NETCONF capability.
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