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Question 1

A Fibre Channel interface on a Cisco Nexus 5000 Series Switch receives bit errors, and the switch disables the interface. A temporary workaround must be implemented before the root cause is identified. Which action does an engineer take to prevent this issue from reoccurring?

AVerify that the SFPs are supported.

BChange the SFP to operate at 4 Gbps instead of 2 Gbps.

CRun the shutdown and then no shutdown command on the interface.

DRun the switchport ignore bit-errors command on the interface.

Correct answer: D

Question 2

An engineer is implementing a new BGP peering in their new data center. The engineer set up the BGP session that peers with the remote end. As soon as the BGP peers attempt to exchange routing prefixes, one of the BGP peers drops the connection. After reviewing the configuration, the engineer reviews the logging messages. The engineer discovers that the router is missing keepalives from the remote end and terminates the session. Which action resolves the issue?

ASet the bgp transport path-mtu-discovery attribute on both peers

BSet the higher values for the BGP keepalive and hold-down timers on both peers

CConfigure the matching BGP AS numbers between the peers

DConfigure the matching BGP passwords between the peers

Correct answer: B

When a BGP session drops due to missing keepalive messages from the remote peer, the issue relates to BGP timer configuration or network connectivity. Resolutions include:

Verify keepalive timer: Ensure the keepalive timer is configured at appropriate intervals (typically 3 seconds for iBGP, 9 seconds for eBGP)
Verify hold timer: Confirm the hold timer is set to at least 3 times the keepalive interval (typically 9 or 27 seconds)
Check timer synchronization: Ensure both BGP peers have compatible keepalive and hold timer values
Verify network connectivity: Confirm there are no network issues preventing keepalive packets from reaching the peer
Check BGP timers on both sides: Review configuration on the remote end to ensure matching timer values
Verify TCP connectivity: Ensure the TCP session underlying BGP remains stable

The resolution involves adjusting BGP keepalive and hold timers on both peers to compatible values, typically increasing the keepalive interval or hold timer to prevent premature session termination due to transient network delays.

Question 3

Refer to the exhibit.

The HSRP instance on both switches is showing as active. Which action resolves the issue?

AConfigure the HSRP timers to be the same.

BAllow VLAN 100 between the switches.

CConfigure the IP address of N9K-B on the same subnet as N9K-A.

DConfigure preempt on only one of the switches.

Correct answer: D

When both HSRP instances show as active simultaneously, the issue is a priority configuration problem:

Configure different HSRP priorities on each switch: HSRP elects a primary (active) router based on priority values. If both switches have the same priority, or if priorities are not configured, split-brain can occur with both becoming active. Set a higher priority on the desired primary switch (e.g., 150) and a lower priority on the backup (e.g., 100). Ensure preemption is enabled on the primary so it takes over if it recovers.

Different priorities ensure deterministic election and prevent dual-active scenarios.

Question 4

Refer to the exhibit.

An engineer discovers that if the vPC peer link goes down, half of the devices in VLAN 20 experience connectivity issues with the external networks Which action resolves the issue?

AConfigure a dedicated Layer 3 link between vPC peers

BAllow non-vPC VLANs on a second trunk between the two vPC peers

CAdd the non-vPC SVIs in the dual-active exclude VLAN list

DExclude the non-vPC VLANs from vPC peer link

Correct answer: C

When a vPC peer link failure causes connectivity issues for half the devices in a VLAN, the issue is a missing or improperly configured peer gateway feature. The resolution involves: (1) Enabling 'peer-gateway' on the vPC domain to allow devices to reach hosts through either vPC member switch even if the peer link is down, (2) Configuring proper vPC consistency checks to ensure both peers have identical VLAN and STP configurations, (3) Adjusting the vPC keepalive mechanism to use a separate management network to prevent keepalive loss during peer link failure, (4) Implementing vPC+HSRP to ensure gateway redundancy, and (5) Ensuring that both vPC peers have identical forwarding tables by properly configuring layer 3 routing protocols.

Question 5

Refer to the exhibit A network administrator must provide Bash shell access to the support team for all of the Cisco Nexus 9000 Series Switches. The newly created user that is named "bashusers" fails to access the Bash shell. Which action resolves the issue?

AAssociate bashusers with the Cisco NX-OS vdc-admin role and activate the nxapi feature.

BAssociate bashusers with the Cisco NX-OS dev-ops role and activate the bash-shell feature.

CAssociate bashusers with the Cisco NX-OS network-admin role and activate the guestshell feature.

DAssociate bashusers with the Cisco NX-OS network-operator role and activate the bash-shell feature.

Correct answer: B

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