Which of the following boards can be inserted into the OSN 9800 U64 subrack?

Question

Options

• ATNF5UNQ2
• BTN18LSC
• CTN54GS4
• DTNV1N401

• A
  16% (3)
• B
  5% (1)
• C
  5% (1)
• D
  74% (14)

Explanation

TNV1N401 (D) is correct because the OSN 9800 U64 subrack only accepts boards carrying the TNV prefix, which designates compatibility with the OSN 9800 platform's architecture and backplane interface. TNV1N401 is a line board engineered specifically for OSN 9800 series equipment.

Why the distractors are wrong:

• TNF5UNQ2 (A) - The TNF prefix belongs to the OSN 6800 platform; it is electrically and mechanically incompatible with the OSN 9800 subrack.
• TN18LSC (B) - The TN18 prefix corresponds to the OSN 1800 series, a different product family targeting access-layer scenarios.
• TN54GS4 (C) - The TN54 prefix is associated with the OSN 8800 platform, which uses a distinct board form factor and backplane design.

Memory tip: Focus on the board name prefix as the platform fingerprint - on Huawei OTN equipment, the prefix directly encodes the target subrack family (TNV → 9800, TNF → 6800, TN54 → 8800, TN18 → 1800). When a question asks about board compatibility, match the prefix to the platform number and you will eliminate all distractors quickly.

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