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350-001 · Question #70
350-001 Question #70: Real Exam Question with Answer & Explanation
The correct answer is B: VLAN 10 is not created in the switch database.. If VLAN 10 does not exist in the switch's VLAN database, the corresponding SVI is inactive and clients cannot reach their default gateway.
Question
Refer to the exhibit. Clients in VLAN 10 complain that they cannot access network resources and the Internet. When you try to ping the default gateway from one of the affected clients, you get ping timeouts. What is the most likely cause of this issue?
Options
- AVLAN 10 is only enabled on trunk interfaces.
- BVLAN 10 is not created in the switch database.
- CSTP is not running on the switch.
- DIP routing is disabled on the switch.
- EThe switch CAM table is corrupted.
Explanation
If VLAN 10 does not exist in the switch's VLAN database, the corresponding SVI is inactive and clients cannot reach their default gateway.
Common mistakes.
- A. A VLAN being present only on trunk ports does not by itself remove the SVI or prevent gateway reachability from access ports.
- C. STP controls loop prevention; its absence would not cause the default gateway to be unreachable via ping.
- D. IP routing being disabled would affect inter-VLAN routing, but ping to the local SVI (default gateway) would still succeed if the VLAN existed.
- E. A corrupted CAM table might cause flooding but would not completely block pings to the directly connected default gateway.
Concept tested. VLAN database existence requirement for SVI activation
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