Referring to the exhibit. Which two WAN functions are shown in the exhibit? (Choose two.)

Question

Exhibit

Options

• AData Center Interconnect
• BWAN aggregation
• CInternet edge
• Dprivate WAN

• A
  7% (3)
• B
  77% (34)
• C
  16% (7)

Explanation

Options B and D are correct because the exhibit typically depicts a hub-and-spoke topology where branch offices connect to a central site using dedicated, private links (such as MPLS or leased lines), representing a private WAN (D), and that central site acts as a collection point for all those branch connections, which is the role of WAN aggregation (B).

Why the distractors are wrong:

• A (Data Center Interconnect): DCI is a specialized function for linking multiple data centers at high speeds - it's a subset of WAN, not a general WAN aggregation design.
• C (Internet edge): The Internet edge is where a network connects to the public internet; since the exhibit shows private/dedicated links with no public internet boundary, this function is not present.

Memory tip: Think "private roads merging onto a highway" - the private WAN connections (individual roads) are aggregated (merged) at a central hub. If there's no on-ramp to the public internet shown, there's no internet edge.

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