In order for the XSL code 
to be valid, the _______ line of HTML must be present.
What will be an ideal response?
```
matching; 
```
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When removing an element from a binary search tree that has a single child, _____________________ will ensure that the resulting tree is still a binary search tree.
a) replacing it with its only child b) replacing it with its inorder successor c) simply deleting it d) all of the above e) neither a, b, nor c
The ____ icon indicates the active layer.
A. Indicates current drawing layer B. Shows current drawing layer C. Identifies current drawing layer D. none of the above
When Jeff, a technician, is troubleshooting a problem, which of the following is the NEXT step after verifying full system functionality?
A. Establish a plan of action to resolve the problem and identify potential effects. B. Implement the solution. C. Establish a theory of probable cause. D. Document findings, actions, and outcomes.
What is a distance-vector routing protocol?
What will be an ideal response?