单选题What is the first CoS process performed when a packet enters a JUNOS device?（）A Rewrite MarkerB Multifield ClassifierC PolicingD BA Classifier
题目
单选题
What is the first CoS process performed when a packet enters a JUNOS device?（）
A
Rewrite Marker
B
Multifield Classifier
C
Policing
D
BA Classifier