350-501 MPLS and Segment Routing Practice Question
In SRv6 micro-SID (uSID) compression, which part of the SID is used to carry a compressed instruction set, enabling efficient forwarding with a shorter SID list?
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
✓
Function
The micro-SID block consists of a locator followed by compressed function and argument, reducing the SID list size.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Block
Why it's wrong here
Block is the common prefix.
- ✓
Function
Why this is correct
The function part encodes the behavior in compressed form.
- ✗
Locator
Why it's wrong here
Locator identifies the node; functions are in the function part.
- ✗
Argument
Why it's wrong here
Argument provides additional parameters.
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Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
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