单项选择题
Which statement describes how RSVP guarantees bandwidth reservations?（）
A. It polices each individual session to an explicit rate.
B. It does not police, but never allows link oversubscription.
C. It polices the aggregate rate of all sessions to an explicit rate.
D. It does not police, but limits the amount of reservable bandwidth.
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Which JUNOS software command establishes a connection to a RADIUS server with an IP addressof 10.100.200.1?（）
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B. set radius-server address 10.100.200.1
C. set authentication radius-server 10.100.200.1
D. set system authentication radius-server 10.100.200.1
