Which two options are required for the private link in the Cisco Contact Center Enterprise solution? (Choose two.)

Question

Options

• Apath diversity
• BLayer 3 quality of service prioritization and queuing
• Cmax of 1500 ms round trip time latency tolerance
• Dvariable layer subnet masking

• A
  77% (30)
• C
  15% (6)
• D
  8% (3)

Explanation

Path diversity (A) is required to ensure redundancy on the private WAN link between CCE sites - if one physical path fails, an alternate route keeps the Central Controller connected to Peripheral Gateways, preventing a complete outage. Layer 3 QoS prioritization and queuing (B) is mandatory because CCE signaling and real-time data must be prioritized over competing traffic on the WAN to maintain predictable latency and prevent call-handling failures.

C is wrong because 1,500 ms RTT is far too permissive - Cisco CCE design guides specify a maximum of 80 ms one-way (≈160 ms RTT) for the private link; 1,500 ms would make real-time call control unusable. D is wrong because Variable Length Subnet Masking (VLSM) is a general IP addressing technique, not a CCE private link requirement - it has no bearing on link design for this solution.

Memory tip: Think "PQ for Private link" - Path diversity (redundancy) and QoS (quality) are the two pillars. The latency trap (C) is there to catch anyone who confuses CCE's strict ~160 ms RTT limit with a much looser number, so always remember: contact center links must be tight, not tolerant.

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