350-601 Quick Quiz — 10 Questions

Question 1

Refer to the exhibit. An engineer configured NX-API on a Nexus 9000 switch. The REST API client receives 'SSL_ERROR_BAD_CERT_DOMAIN'. What is the most likely cause?

Accepted Answer

The certificate does not match the switch's hostname. The SSL_ERROR_BAD_CERT_DOMAIN error indicates that the certificate presented by the Nexus 9000 switch does not match the hostname used in the REST API client's request. When NX-API uses HTTPS, the client validates the server's certificate against the requested domain; a mismatch triggers this error. This is a common TLS/SSL certificate validation issue, not a problem with HTTP conflicts, missing keys, or corrupted files.

Answer

HTTP is enabled which conflicts with HTTPS

Answer

The key file is missing

Answer

The certificate file is corrupted

Question 2

During an FCoE deployment, the server team reports that hosts can reach the storage array but performance is intermittent with periodic timeouts. The network team sees no errors on the FCoE VLAN. The DCB configuration on the upstream switch shows that PFC is enabled for CoS 3. What should the engineer check next?

Accepted Answer

Check if the PFC configuration matches on both ends and that PFC is enabled on the FCoE VLAN interfaces. D is correct because PFC (Priority Flow Control) must be consistently configured on both ends of an FCoE link to prevent frame loss. If PFC is enabled for CoS 3 on the upstream switch but not on the server's vNIC or the FCoE VLAN interfaces, the lack of lossless behavior causes intermittent timeouts and performance degradation, even if the FCoE VLAN shows no errors.

Answer

Verify that jumbo frames are enabled on the storage array

Answer

Confirm that the VSAN is appropriately sized for the number of hosts

Answer

Ensure that the FCoE VLAN is enabled for FCoE on the server's vNIC

Question 3

In a Cisco ACI fabric, a tenant has multiple bridge domains in the same VRF all with 'Unicast Routing' enabled and hardware proxy mode. However, endpoints in different BDs within the same VRF cannot communicate even with a contract. What is a possible reason?

Accepted Answer

The 'ARP Flooding' is enabled.. When 'Unicast Routing' is enabled on a bridge domain (BD) in hardware proxy mode, the ACI fabric relies on hardware proxy for forwarding. In this mode, ARP flooding should be disabled to prevent excessive flooding and allow the fabric to properly resolve ARP via the COOP database. If 'ARP Flooding' is enabled, the fabric floods ARP requests across all BDs, which can cause ARP resolution to fail for endpoints in different BDs because the hardware proxy expects ARP to be handled differently. This prevents inter-BD communication even with a contract in place. Therefore, having 'ARP Flooding' enabled is a possible reason for the communication failure.

Answer

The 'L3 Unknown Multicast Flooding' is set to flood.

Answer

The contracts are unidirectional.

Answer

The bridge domains are in different subnets.

Question 4

Which component in a UCS 5108 blade chassis provides the connectivity between the blade servers and the Fabric Interconnects?

Accepted Answer

I/O Module (IOM). The I/O Module (IOM) in the UCS 5108 chassis provides the uplink ports that connect to the Fabric Interconnects and the downlink ports that connect to the blade servers.

Answer

Chassis management controller (CMC)

Answer

Midplane

Answer

Fabric Extender (FEX)

Question 5

In a VXLAN EVPN fabric, which protocol is used to exchange MAC and IP address reachability information among VTEPs?

Accepted Answer

BGP. In a VXLAN EVPN fabric, BGP (Border Gateway Protocol) is used as the control plane protocol to exchange MAC and IP address reachability information among VTEPs. Specifically, MP-BGP (Multiprotocol BGP) with EVPN address family (AFI L2VPN / SAFI EVPN) carries Type-2 routes (MAC/IP advertisement) to distribute host reachability across the overlay network, enabling efficient MAC learning and ARP suppression.

Answer

IS-IS

Answer

EIGRP

Answer

OSPF

Question 6

Which TWO statements about Cisco TrustSec in a data center are true?

Accepted Answer

SXP (SGT Exchange Protocol) is used to propagate SGTs across network devices that do not support inline tagging.. SXP (SGT Exchange Protocol) is specifically designed to propagate Security Group Tag (SGT) information between network devices that do not support hardware-based inline tagging (e.g., older switches or routers). SXP allows these devices to participate in TrustSec policy enforcement by exchanging SGT-to-IP bindings over TCP, enabling consistent access control across heterogeneous environments.

Answer

TrustSec can replace 802.1X authentication in the data center.

Answer

SGTs are 32-bit values assigned to users or devices.

Answer

TrustSec is primarily designed for wireless networks.

Question 7

Refer to the exhibit. A network engineer notices that traffic for VNI 10000 is not being encapsulated. What is the most likely reason?

Accepted Answer

VNI 10000 is not configured under the nve interface.. VNI 10000 must be explicitly mapped to an NVE interface under the 'interface nve1' configuration using the 'member vni 10000' command. Without this mapping, the NVE interface does not know which VNI to encapsulate traffic for, even if the VNI exists in the network. Option B correctly identifies this missing configuration as the most likely cause.

Answer

BGP EVPN is not configured.

Answer

The VRF association is incorrect.

Answer

The source-interface is not reachable.

Question 8

Refer to the exhibit. A server connected to Ethernet1/1 is experiencing intermittent connectivity. The server sends BPDUs, causing the switch to place the port into a blocking state. Which configuration change should be made to prevent this while maintaining rapid convergence?

Accepted Answer

Add 'spanning-tree bpdufilter enable' on the interface.. Enabling BPDU filter on the interface prevents the switch from processing BPDUs received from the server, which stops the port from being placed into a blocking state due to BPDU reception. This maintains rapid convergence because the port remains configured as an edge port (spanning-tree port type edge trunk), allowing it to transition directly to forwarding without spanning-tree negotiation.

Answer

Add 'spanning-tree guard loop' to the interface.

Answer

Remove the 'spanning-tree port type edge trunk' command and configure 'spanning-tree port type normal'.

Answer

Change the port type to 'spanning-tree port type network trunk'.

Question 9

A data center engineer configures an ACL on a Nexus 9000 switch to block all traffic from the management network (10.10.0.0/16) to the production servers (192.168.1.0/24) except for SSH access from a specific jump host (10.10.1.100). The ACL is applied inbound on the management interface. Which ACL entry is correctly ordered to achieve this requirement?

Accepted Answer

permit tcp host 10.10.1.100 192.168.1.0 0.0.0.255 eq 22
deny ip 10.10.0.0 0.0.255.255 192.168.1.0 0.0.0.255
permit ip any any. ACLs are processed top-down, and the first match wins. The explicit permit for SSH from the jump host (10.10.1.100) must come before the deny for the entire 10.10.0.0/16 range to ensure the exception is honored. The final permit ip any any allows all other non-management traffic, which is necessary to avoid dropping legitimate traffic on the management interface.

Answer

permit ip any any
deny ip 10.10.0.0 0.0.255.255 192.168.1.0 0.0.0.255
permit tcp host 10.10.1.100 192.168.1.0 0.0.0.255 eq 22

Answer

permit tcp host 10.10.1.100 192.168.1.0 0.0.0.255 eq 22
permit ip any any
deny ip 10.10.0.0 0.0.255.255 192.168.1.0 0.0.0.255

Answer

deny ip 10.10.0.0 0.0.255.255 192.168.1.0 0.0.0.255
permit tcp host 10.10.1.100 192.168.1.0 0.0.0.255 eq 22
permit ip any any

Question 10

In ACI, which model is used for micro-segmentation to allow traffic between EPGs?

Accepted Answer

Whitelist model using contracts. ACI uses a whitelist model via contracts to permit traffic between EPGs.

Answer

Blacklist model using taboo contracts

Answer

IP-based ACLs on leaf switches

Answer

VRF leaking