Which of the following is not a network reliability protection technology?

Question

Options

• ALoad sharing
• BVPN FRR
• CPCEP
• DTE HSB

• A
  4% (1)
• B
  13% (3)
• C
  78% (18)
• D
  4% (1)

Explanation

PCEP (Path Computation Element Protocol) is a signaling/communication protocol used between a Path Computation Client (PCC) and a Path Computation Element (PCE) to request and receive optimal path calculations - it enables path computation but does not itself provide fault protection or redundancy.

The other three options are genuine reliability protection technologies: Load Sharing (A) distributes traffic across multiple paths simultaneously, preventing single-point-of-failure outages; VPN FRR (B) (Fast ReRoute) pre-computes backup tunnels in MPLS/VPN networks and triggers near-instant switchover (sub-50ms) when a primary path fails; and TE HSB (D) (Traffic Engineering Hot Standby) maintains a pre-established standby LSP ready to take over the moment the primary TE tunnel goes down.

Memory tip: Think of the odd one out as the "calculator, not the seatbelt" - PCEP computes paths (a planning tool), while Load Sharing, FRR, and HSB all protect traffic during failures (safety mechanisms). If a technology is about switchover, backup, or redundancy, it's a protection tech; if it's about computing or signaling optimal routes, it's not.

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