Which two kinds of basic service sets are included in BSS? (Multiple choice)

Question

Options

• AIndependent Basic Service Set
• BInfrastructure Schema Basic Set of Services
• CExtending the Basic Service Set
• DExtended Architecture Pattern Basic Service Set

• A
  70% (21)
• C
  20% (6)
• D
  10% (3)

Explanation

In IEEE 802.11 wireless networking, BSS encompasses two fundamental network configurations: the Independent Basic Service Set (IBSS), which is an ad-hoc peer-to-peer network where devices communicate directly without an access point, and the Infrastructure BSS, where all traffic flows through a central Access Point (AP). These two modes cover every possible BSS deployment scenario defined in the 802.11 standard, which is why A and B are correct.

Why the distractors are wrong:

• C ("Extending the Basic Service Set") conflates BSS with ESS (Extended Service Set) - an ESS is formed by linking multiple BSSs together, making it a superset of BSS, not a type within it.
• D ("Extended Architecture Pattern Basic Service Set") is fabricated terminology with no definition in the 802.11 standard.

Memory tip: Think of the two letters I and I - IBSS (Independent, no infrastructure) vs. Infrastructure BSS (has an AP). If you're alone in a room with no router and connecting directly to a friend's laptop, that's IBSS. If you're connecting through a router/AP, that's Infrastructure BSS. The word "Extending" in option C is your signal it belongs to ESS territory, not BSS.

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