CCNA Plan

CCNA practice question: IP Connectivity

IP ConnectivityDifficulty 3/5

Which command configures a floating static default route on a Cisco router that is used only if the OSPF-learned default route disappears?

  1. Aip default-gateway 203.0.113.1
  2. Bip route 0.0.0.0 0.0.0.0 203.0.113.1
  3. Cip route 0.0.0.0 0.0.0.0 203.0.113.1 5
  4. Dip route 0.0.0.0 0.0.0.0 203.0.113.1 120
Show answer and rationale

Correct: D. A floating static route needs an administrative distance higher than the primary route's AD. OSPF is 110, so 120 makes the static route inactive until the OSPF route is withdrawn. AD 1 (default) or 5 would beat OSPF.

  • B — Default AD 1 would always win over OSPF.
  • C — AD 5 is still lower than OSPF's 110.
  • A — ip default-gateway applies when IP routing is disabled (switches), not a routed default.

Concept being tested

Routing table components, how a router forwards (longest prefix match, AD, metric), static routing, single-area OSPFv2, first-hop redundancy. — 25% of the exam. Study guide for IP Connectivity.

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Primary references

  1. CCNA Exam v1.1 (200-301) Exam Topics — Cisco Systems · primary · retrieved 2026-09-21, verified 2026-09-21
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