Which of the following protocols is used for southbound management of Huawei iMaster NCE- WAN controller?

Question

Options

• ANETCONF over SSH
• BHTTP/2
• CSNMP
• DNEICONF over DTLS

• A
  78% (46)
• B
  12% (7)
• C
  7% (4)
• D
  3% (2)

Explanation

NETCONF over SSH is the correct southbound protocol for Huawei iMaster NCE-WAN because NETCONF (RFC 6241) is the IETF-standard network configuration protocol designed specifically for programmatic device management, and SSH provides the secure, reliable transport layer it requires - this combination is the de facto standard for SDN controller-to-device (southbound) communication in enterprise and carrier networks, including Huawei's NCE platform.

Why the distractors are wrong:

• B. HTTP/2 is used for northbound interfaces (REST APIs between the controller and applications/OSS), not southbound device management.
• C. SNMP is a legacy monitoring protocol - it can read device stats but lacks the robust configuration and transaction capabilities that NETCONF provides; modern SDN controllers move away from it for southbound management.
• D. NEICONF over DTLS is a fabricated option - "NEICONF" is not a real protocol. DTLS is also UDP-based and used for latency-sensitive scenarios (not standard southbound SDN management). This option is designed to catch candidates who misremember "NETCONF."

Memory tip: Think "South = NETCONF/SSH, North = REST/HTTP" - southbound goes down to devices (NETCONF for config, SSH for security), northbound goes up to apps (HTTP-based APIs). The "NEI" in option D is a red flag - if it doesn't spell "NET," it's the trap.

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