Exam 300-115 topic 5 question 211 discussion

Actual exam question from Cisco's 300-115

Question #: 211
Topic #: 5

[All 300-115 Questions]

Which three options are reasons for an interface to go into err-disable state? (Choose three.)

A. security violation
B. BPDU guard violation
C. hard-coded speed duplex match on both sides
D. ARP inspection
E. storm-control broadcast
F. grouping ports into a port channel

Show Suggested Answer

Suggested Answer: ABD 🗳️
Reference:
https://www.cisco.com/c/en/us/support/docs/lan-switching/spanning-tree-protocol/69980-errdisable-recovery.html

by MIi2604 at Aug. 28, 2019, 10:24 a.m.

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Bastex

5 years, 7 months ago

This is output from Catalyst 3750E: "SW(config)#errdisable detect cause ? all Enable error detection on all cases arp-inspection Enable error detection for arp inspection bpduguard Enable error detection on bpdu-guard dhcp-rate-limit Enable error detection on dhcp-rate-limit dtp-flap Enable error detection on dtp-flapping gbic-invalid Enable error detection on gbic-invalid inline-power Enable error detection for inline-power l2ptguard Enable error detection on l2protocol-tunnel link-flap Enable error detection on linkstate-flapping loopback Enable error detection on loopback pagp-flap Enable error detection on pagp-flapping pppoe-ia-rate-limit Enable error detection on PPPoE IA rate-limit psp Enable error detection on PSP security-violation Enable error detection on 802.1x-guard sfp-config-mismatch Enable error detection on SFP config mismatch small-frame Enable error detection on small_frame SW(config)#" It is full output of the command. There is no storm-control on the list.

upvoted 1 times

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james

5 years, 9 months ago

This should be A,B,D,E (choose 4)

upvoted 1 times

DimS

5 years, 7 months ago

Yes. It's the incorrect/unclear question from Cisco as usual. The list of err-disable reasons depends on an IOS version and a platform.

upvoted 1 times

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MIi2604

5 years, 10 months ago

A,B,E ???

upvoted 3 times

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