Given a Cisco Catalyst 4500 Series Switch with redundant supervisors, what feature allows phone calls to remain up in the event of a supervisor failure?
A. HSRP
B. SSO
C. CEF
D. NSF
E. NetFlow
Given a Cisco Catalyst 4500 Series Switch with redundant supervisors, what feature allows phone calls to remain up in the event of a supervisor failure?
A. HSRP
B. SSO
C. CEF
D. NSF
E. NetFlow