Dell EMC D-SNC-DY-00 Exam Questions Instant Access

Question 1

Refer to the exhibit.

What type of route is shown?

AType 3 host route from external VTEP

BType 2 host route from another VTEP

CType 3 host route from another VTEP

DType 5 host route from another VTEP

Answer : B

The exhibit shows a BGP EVPN route in a VXLAN environment. The route type can be determined based on the details provided. Type 2 routes in BGP EVPN are used to advertise MAC address reachability information between VTEPs (Virtual Tunnel End Points). The exhibit indicates a host route from another VTEP, which corresponds to a Type 2 route.

Dell Technologies SONiC documentation

BGP EVPN Configuration Guide

Question 2

SIMULATION

Use the simulator to perform the following configuration task.

1. Map a single-tagged CVLAN 100 to SVLAN 200 translation on PE

switch interface Eth1/1.

2. Map a double-tagged VLAN packet with an outer CVLAN 100 and an

inner dot1q 200 to SVLAN 300 translation on PE switch interface

Eth1/2.

The necessary VLANs and VLAN stacking have already been configured.

Asee the explanation for all step by step solution with all explanation

Answer : A

Here are the steps to configure the required VLAN translations on a Dell SONiC switch:

Map a Single-Tagged CVLAN 100 to SVLAN 200 on Interface Eth1/1:

sonic# configure terminal

sonic(config)# interface Ethernet1/1

sonic(config-if-Ethernet1/1)# switchport mode trunk

sonic(config-if-Ethernet1/1)# switchport vlan mapping 100 200

sonic(config-if-Ethernet1/1)# end

sonic# write memory

Map a Double-Tagged VLAN Packet with Outer CVLAN 100 and Inner dot1q 200 to SVLAN 300 on Interface Eth1/2:

sonic# configure terminal

sonic(config)# interface Ethernet1/2

sonic(config-if-Ethernet1/2)# switchport mode trunk

sonic(config-if-Ethernet1/2)# switchport vlan mapping 100 200 300

sonic(config-if-Ethernet1/2)# end

sonic# write memory

Comprehensive Detailed Step by Step Explanation with Reference:

Enter Configuration Mode:

Access the global configuration mode using the configure terminal command.

Configure Interface Eth1/1:

Enter interface configuration mode for Ethernet1/1 using the command interface Ethernet1/1.

Set the switchport mode to trunk with the command switchport mode trunk.

Configure the VLAN translation using the switchport vlan mapping 100 200 command, which maps CVLAN 100 to SVLAN 200.

Exit the interface configuration mode by typing end.

Save the configuration with write memory.

Configure Interface Eth1/2:

Enter interface configuration mode for Ethernet1/2 using the command interface Ethernet1/2.

Set the switchport mode to trunk with the command switchport mode trunk.

Configure the double-tagged VLAN translation using the switchport vlan mapping 100 200 300 command, which maps packets with outer CVLAN 100 and inner dot1q 200 to SVLAN 300.

Exit the interface configuration mode by typing end.

Save the configuration with write memory.

Dell Technologies Networking - SONiC

Dell Enterprise SONiC Deployment Guide

These steps provide a comprehensive guide to configure VLAN translations on a Dell SONiC switch, ensuring that the specific requirements for single-tagged and double-tagged VLAN mappings are met.

Question 3

How many port channels can be assigned to a single port?

Answer : D

According to the Dell SONiC documentation, a single physical port can be a member of only one port channel at a time. This restriction ensures the consistency and integrity of link aggregation configurations.

Dell Networking SONiC: How to Configure Port Channels

Dell Technologies InfoHub

Question 4

Refer to the exhibit.

Eth 1/1 of SONiC-1 and Eth1/56 of SONiC-2 should be a routed link connecting the two Enterprise SONiC switches. No traffic is passing between them.

What is the cause of the failure?

AAn incorrect IPv6 address type was used for interface Eth1/56 of SONiC-2.

BA spanning-tree is blocking the routed link.

CIPv6 is not enabled on interface Eth 1/1 of SONiC-1.

DThere is a cable that is unplugged between SONiC-1 and SONiC-2.

Answer : A

From the exhibit, it is evident that Eth1/56 on SONiC-2 is assigned a link-local IPv6 address (fe80::e7d:8aff:fecb

/64). Link-local addresses are not routable beyond the local network segment, which means they cannot be used to route traffic between SONiC-1 and SONiC-2. For routed links, global unicast addresses must be used.

Dell Technologies SONiC documentation

IPv6 Addressing Guide

Question 5

Refer to the exhibit.

The route distinguisher was autogenerated. Which VLAN is mapped to VNI410?

AVLAN 410

BVLAN41

CVLAN 10

DVLAN 26

Answer : C

The route distinguisher (RD) in the exhibit is 10.0.2.26:41. The RD typically reflects the VNI and VLAN mapping configuration. Given that the VNI is 410 and the RD ends with :41, it implies that VLAN 10 is mapped to VNI 410.

Dell Technologies SONiC documentation

VXLAN Configuration Guide

Question 6

Which two additional Q-in-Q VLAN tunnel configuration steps must be followed if the provider network uses a VXLAN overlay?

AConfigure VLAN Translation.

BMap the SVLAN traffic to a VNI.

CRemove the CVLAN-to-SVLAN mapping.

DConfigure the BGP route-target and route-distinguisher.

Answer : A, B

Configure VLAN Translation (A): VLAN translation is necessary to translate customer VLANs (CVLANs) to service VLANs (SVLANs) for Q-in-Q tunneling in a VXLAN environment.

Map the SVLAN traffic to a VNI (B): SVLAN traffic must be mapped to a VXLAN Network Identifier (VNI) for encapsulation and transport across the VXLAN overlay network.

Dell Technologies SONiC documentation

VXLAN Configuration Guide

Question 7

An administrator for a service provider uses this command on a switch:

What is the result of running the command?

AMaps the VLAN traffic that a CVLAN identifies to a VNI on a VTEP

BMaps the VLAN traffic that a TPID identifies to a VNI on a VTEP

CMaps the VLAN traffic that an SVLAN identifies to a VNI on a VTEP

Answer : C

The command interface vxlan vtep-stacking followed by map vni 10010 vlan 100 maps the VLAN traffic that an SVLAN identifies to a VNI on a VTEP. In this context, SVLAN (Service VLAN) is being mapped to a VXLAN Network Identifier (VNI) for encapsulation and transport across the VXLAN tunnel.

Dell Technologies SONiC documentation

VXLAN Configuration Guide

Dell EMC Dell SONiC Deploy D-SNC-DY-00 Exam Questions