Network resiliency is a key component of a network design. Which two mechanisms will provide redundancy and resiliency for Layer 2 and Layer 3 devices? (Choose two.)

Network resiliency is a key component of a network design. Which two mechanisms will provide redundancy and resiliency for Layer 2 and Layer 3 devices? (Choose two.)

• FHRP
• STP
• HDLC
• DTP
• VPN

Explanation: STP (Spanning Tree Protocol, including RSTP and RSTP+) and FHRP (First Hop Redundancy Protocols such as HSRP, VRRP, and GLBP) prevent switching loops, provide link-specific failover, and provide Layer 3 recovery. HDLC is a WAN technology; DTP is a Layer 2 trunk configuration protocol; and VPNs provide data communications security.

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