300-320 Question #102: Real Exam Question with Answer & Explanation

The correct answer is C: VSS. VSS - Virtual Switching System (C) - is Cisco's most advanced high-availability solution among the listed options. VSS logically combines two physical Catalyst switches into a single virtual switch with a single control plane, management IP, and configuration. This eliminates tra

Question

What is the latest Cisco high-availability solution?

Options

AVRRP
BHSRP
CVSS
DGLBP

Explanation

VSS - Virtual Switching System (C) - is Cisco's most advanced high-availability solution among the listed options. VSS logically combines two physical Catalyst switches into a single virtual switch with a single control plane, management IP, and configuration. This eliminates traditional STP-based redundancy and enables all links to be active simultaneously via MEC (Multichassis EtherChannel), providing both redundancy and increased bandwidth. HSRP (B) is Cisco's older proprietary First Hop Redundancy Protocol (FHRP) that provides only gateway redundancy. VRRP (A) is the open-standard equivalent of HSRP. GLBP (D) adds load balancing to gateway redundancy but is still limited to FHRP scope. VSS represents an architectural advancement beyond these protocols by virtualizing the entire switching platform.

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