[Jan 05, 2025] D-SNC-DY-00 Ultimate Study Guide - ExamsLabs
Ultimate Guide to Prepare D-SNC-DY-00 Certification Exam for Dell Networking in 2025
NEW QUESTION # 14
A customer must configure a peer link between two switches in the L2 MC-LAG scenario.
SwitchB has already been configured. Configure the peer link on SwitchA.
Use the following configuration information:
MC-LAG domain 1
VLAN 101
Peer link Port-Channel 100
SwitchA IP: 192.168.1.1/24
SwitchB IP: 192.168.1.2/24
MC-LAG system MAC: 00:00:00:11:11:11
The physical ports to connect the peer switch are Eth 1/5 and Eth 1/6 for each switch.
Answer:
Explanation:
see the explanation for all step by step solution with all explanation.
Explanation:
Here are the steps to configure the peer link on SwitchA:
* Enter Configuration Mode:
SwitchA# configure terminal
* Create VLAN 101:
SwitchA(config)# vlan 101
* Create Port-Channel 100:
SwitchA(config)# interface port-channel 100
SwitchA(config-if-po100)# switchport mode trunk
SwitchA(config-if-po100)# switchport trunk allowed vlan 101
SwitchA(config-if-po100)# exit
* Assign Physical Interfaces to Port-Channel 100:
SwitchA(config)# interface ethernet 1/5
SwitchA(config-if-eth1/5)# channel-group 100 mode active
SwitchA(config-if-eth1/5)# exit
SwitchA(config)# interface ethernet 1/6
SwitchA(config-if-eth1/6)# channel-group 100 mode active
SwitchA(config-if-eth1/6)# exit
* Configure MC-LAG Domain 1:
SwitchA(config)# mclag domain 1
SwitchA(config-mclag-domain)# peer-link port-channel 100
SwitchA(config-mclag-domain)# local-ip 192.168.1.1
SwitchA(config-mclag-domain)# peer-ip 192.168.1.2
SwitchA(config-mclag-domain)# system-mac 00:00:00:11:11:11
SwitchA(config-mclag-domain)# exit
* Save Configuration:
SwitchA# write memory
Comprehensive Detailed Step by Step Explanation with References:
* Enter Configuration Mode:
* Begin by entering the global configuration mode to make changes to the switch configuration.
* Create VLAN 101:
* Create VLAN 101 to be used for the MC-LAG peer link communication.
* Create Port-Channel 100:
* Enter the port channel interface configuration mode using interface port-channel 100.
* Set the port channel to trunk mode with switchport mode trunk.
* Allow VLAN 101 on the trunk with switchport trunk allowed vlan 101.
* Exit the port channel interface configuration mode.
* Assign Physical Interfaces to Port-Channel 100:
* Enter interface configuration mode for ethernet 1/5 and assign it to port channel 100 using the channel-group 100 mode active command.
* Exit the interface configuration mode.
* Repeat the same steps for ethernet 1/6.
* Configure MC-LAG Domain 1:
* Enter the MC-LAG domain configuration mode using mclag domain 1.
* Specify the peer link port channel with peer-link port-channel 100.
* Configure the local IP address as 192.168.1.1 using local-ip 192.168.1.1.
* Configure the peer IP address as 192.168.1.2 using peer-ip 192.168.1.2.
* Set the MC-LAG system MAC address using system-mac 00:00:00:11:11:11.
* Exit the MC-LAG domain configuration mode.
* Save Configuration:
* Save the configuration to ensure the changes persist after a reboot using the write memory command.
References:
* Dell Technologies Networking - SONiC
* Dell Enterprise SONiC Deployment Guide
These steps provide a comprehensive guide to configure the peer link for an MC-LAG scenario on SwitchA, ensuring the specific requirements for IP addressing, VLAN configuration, and port channel setup are met.
NEW QUESTION # 15
An administrator obtains the following CLI output:
How much time does the local system take to detect remote failures without receiving packets?
- A. 900milliseconds
- B. 1200 milliseconds
- C. 800 milliseconds
- D. 600 milliseconds
Answer: A
Explanation:
The local timers in the BFD (Bidirectional Forwarding Detection) configuration show a detect multiplier of 4 and a receive interval of 300ms. The time taken to detect remote failures is calculated as detect multiplier × receive interval = 4 × 300ms = 1200ms.
References:
* Dell Technologies SONiC documentation
* BFD Configuration Guide
NEW QUESTION # 16
What are the supported modes for the QSFP28 ports on an S5248F?
- A. 1x400G, 2x200 G, 4x25 G. and 4x10 G
- B. 1x100G, 1x40 G, 4x25 G, and 4x10 G
- C. 1x200G, 1x100 G, 1x40 G, and 4x25 G
- D. 1x100G, 1x40 G, 2x50 G, and 4x25 G
Answer: D
Explanation:
The QSFP28 ports on an S5248F switch support multiple modes, including 1x100G, 1x40G, 2x50G, and
4x25G. These modes provide flexibility in network design and enable the switch to support different types of network connections and bandwidth requirements.
References:
* Dell S5248F Switch Data Sheet
* Dell Technologies InfoHub
NEW QUESTION # 17
How many ports are in each port-group on the S5200 series switches?
- A. 0
- B. 1
- C. 2
Answer: B
Explanation:
Each port-group on the S5200 series switches consists of 4 ports. This grouping allows for efficient management and configuration of the switch ports in sets.
References:
* Dell S5200 Series Switches Documentation
* Dell Technologies InfoHub
NEW QUESTION # 18
Refer to the exhibit.
The route distinguisher was autogenerated. Which VLAN is mapped to VNI410?
- A. VLAN 10
- B. VLAN 26
- C. VLAN 410
- D. VLAN41
Answer: A
Explanation:
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.
References:
* Dell Technologies SONiC documentation
* VXLAN Configuration Guide
NEW QUESTION # 19
What is a correct use-case scenario for ZTP in Enterprise SONiC?
- A. The user wants to replace a failed unit and use an automatic script.
- B. The user wants single pane of glass monitoring.
- C. The user wants to configure the switch manually using the CLI.
- D. The user wants multivendor switch deployment.
Answer: A
Explanation:
ZTP (Zero Touch Provisioning) is used to automate the configuration of switches, especially useful in scenarios where a failed unit needs to be replaced. By using ZTP, the switch can automatically download and apply the necessary configuration scripts upon boot-up, reducing the need for manual intervention and speeding up the deployment process.
References:
* Dell Technologies SONiC documentation
* Zero Touch Provisioning Guide
NEW QUESTION # 20
What is the purpose of the write erase boot command option?
- A. Delete the startup and enable zero touch provisioning.
- B. Delete the startup configuration and the management interface configuration.
- C. Delete the running configuration and all user accounts.
- D. Remove user-installed packages and tile changes.
Answer: A
Explanation:
The write erase boot command option deletes the startup configuration and enables zero touch provisioning (ZTP). This is used to reset the switch to its default state and prepare it for automated configuration through ZTP.
References:
* Dell Technologies SONiC Command Reference Guide
* Switch Configuration Guide
NEW QUESTION # 21
What is the impact of entering the qos-mode uniform command on a VTEP interface?
- A. The DCSP values for the local and remote VTEPs are synchronized.
- B. The local VNI value is aligned to the VNI of the remote VTEP interface.
- C. The payload DSCP value is copied to the outer header DSCP value.
- D. A uniform VNI value is configured on local and remote VTEP interfaces.
Answer: C
Explanation:
Entering the qos-mode uniform command on a VTEP interface ensures that the DSCP (Differentiated Services Code Point) value of the payload is copied to the outer header DSCP value. This maintains the Quality of Service (QoS) markings across the VXLAN tunnel, allowing consistent traffic prioritization.
References:
* Dell Technologies SONiC documentation
* VXLAN and QoS Configuration Guide
NEW QUESTION # 22
Refer to the exhibit.
What is the primary VRRP router for VRRP group 10?
- A. Router-3
- B. Router-1
- C. Router-2
Answer: C
Explanation:
Based on the exhibit, Router-2 has the highest priority (90) in VRRP group 10. In VRRP, the router with the highest priority becomes the primary (master) router. Therefore, Router-2 is the primary VRRP router for VRRP group 10.
References:
* Dell Technologies SONiC VRRP Configuration Guide
* VRRP Protocol Overview
NEW QUESTION # 23
Configure a VRF called "VrfGreen" and the static route in it to network 172.16.128.64/28 through next-hop
10.10.10.1. Set an administrative distance of 213.
Answer:
Explanation:
see the explanation for all step by step solution with all explanation.
Explanation:
Here are the steps to configure the VRF and the static route:
* Enter Configuration Mode:
sonic# configure terminal
* Create VRF "VrfGreen":
sonic(config)# ip vrf VrfGreen
* Configure the Static Route:
sonic(config)# ip route vrf VrfGreen 172.16.128.64/28 10.10.10.1 213
* Save Configuration:
sonic# write memory
Comprehensive Detailed Step by Step Explanation with References:
* Enter Configuration Mode:
* Begin by entering the global configuration mode to make changes to the switch configuration.
* Create VRF "VrfGreen":
* Use the command ip vrf VrfGreen to create a new VRF named "VrfGreen". This command sets up a new VRF instance which will isolate the routing table for this VRF from the global routing table and other VRFs.
* Configure the Static Route:
* Use the command ip route vrf VrfGreen 172.16.128.64/28 10.10.10.1 213 to configure the static route.
* ip route vrf VrfGreen specifies that the route should be added to the "VrfGreen" VRF.
* 172.16.128.64/28 is the destination network.
* 10.10.10.1 is the next-hop IP address.
* 213 is the administrative distance, which in this case is set to a non-default value to influence route preference.
* Save Configuration:
* Save the configuration to ensure the changes persist after a reboot using the write memory command.
References:
* Dell Technologies Networking - SONiC
* Dell Enterprise SONiC Deployment Guide
These steps provide a comprehensive guide to configure a VRF and a static route within that VRF on a SONiC-based switch, ensuring the specific requirements for routing and administrative distance are met.
NEW QUESTION # 24
Refer to the exhibit.
What type of route is shown?
- A. Type 5 host route from another VTEP
- B. Type 3 host route from another VTEP
- C. Type 3 host route from external VTEP
- D. Type 2 host route from another VTEP
Answer: D
Explanation:
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.
References:
* Dell Technologies SONiC documentation
* BGP EVPN Configuration Guide
NEW QUESTION # 25
What does show interface breakout port slot/slot command display?
- A. The In Progress/Complete status of the breakout of the port
- B. The Error/Debug status of the breakout of the port
- C. The breakout modes available to that port
- D. The configuration of that port
Answer: C
Explanation:
The show interface breakout port slot/slot command displays the breakout modes available for the specified port. Breakout modes determine how a single high-speed port can be split into multiple lower-speed ports, providing flexibility in network port configurations.
References:
* Dell Technologies SONiC Command Reference Guide
* Port Breakout Configuration Guide
NEW QUESTION # 26
Configure the system to meet these requirements.
. Configure R1 with AS 1.
. R1 must use a static neighbor assignment for BGP peering.
. R1 needs to redistribute all current and future connected IPv4 routes.
All the required BGP configurations have already been completed on R2.
R2 resides in BGP AS 2.
Answer:
Explanation:
see the explanation for all step by step solution with all explanation.
Explanation:
Here is the step-by-step configuration for R1:
* Enter BGP Configuration Mode:
R1# configure terminal
R1(config)# router bgp 1
* Configure the BGP Neighbor:
R1(config-router)# neighbor 10.10.12.2 remote-as 2
* Redistribute Connected Routes into BGP:
R1(config-router)# redistribute connected
* Exit BGP Configuration Mode and Save the Configuration:
R1(config-router)# end
R1# write memory
Comprehensive Detailed Step by Step Explanation with References:
* Enter BGP Configuration Mode:
* To configure BGP on R1, you need to enter global configuration mode and then enter BGP
* configuration mode with the AS number. Since R1 is in AS 1, you use the command router bgp 1.
* Configure the BGP Neighbor:
* BGP neighbors must be manually specified. In this case, R1's neighbor is R2, which has an IP address of 10.10.12.2 and resides in AS 2. The command neighbor 10.10.12.2 remote-as 2 establishes this relationship.
* Redistribute Connected Routes into BGP:
* To ensure that all connected routes on R1 are advertised via BGP, you use the redistribute connected command. This ensures that any connected IPv4 routes are redistributed into BGP, meeting the requirement to advertise current and future connected routes.
* Exit BGP Configuration Mode and Save the Configuration:
* Once the configuration is complete, you exit BGP configuration mode by typing end and then save the configuration with the write memory command. This ensures that the changes persist after a reboot.
References:
* Cisco BGP Configuration Guide
* Dell Technologies Networking - SONiC
* Dell Enterprise SONiC Deployment Guide
These steps provide a comprehensive guide to configure R1 to meet the specified requirements for BGP peering and route redistribution.
NEW QUESTION # 27
What is an iBGP neighbor relationship?
- A. Two BGP neighbors share L2VPN EVPN advertisements.
- B. Two BGP neighbors have the same autonomous system numbers
- C. Two BGP neighbors share only native BGP networks.
- D. Two BGP neighbors share only private networks.
Answer: B
Explanation:
An iBGP (Internal Border Gateway Protocol) neighbor relationship is established between two BGP routers within the same autonomous system (AS). This relationship allows for the exchange of routing information within the AS, ensuring that internal routes are propagated correctly.
References:
* Dell Technologies SONiC Routing Guide
* BGP Configuration Guide
NEW QUESTION # 28
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?
- A. IPv6 is not enabled on interface Eth 1/1 of SONiC-1.
- B. A spanning-tree is blocking the routed link.
- C. An incorrect IPv6 address type was used for interface Eth1/56 of SONiC-2.
- D. There is a cable that is unplugged between SONiC-1 and SONiC-2.
Answer: C
Explanation:
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.
References:
* Dell Technologies SONiC documentation
* IPv6 Addressing Guide
NEW QUESTION # 29
What is the correct order of steps for data flow in asymmetric IRB frame encapsulation?
Answer:
Explanation:
Explanation:
* Ingress VTEP performs a route lookup that is based on the destination IP address.
* Ingress VTEP encapsulates the packet with VXLAN and sends it on the appropriate VNI segment.
* Egress VTEP determines that the host is local to the VNI and switches the packet.
* Egress VTEP bridges the packet after decapsulation.
Steps and Correct Order:
* Ingress VTEP performs a route lookup that is based on the destination IP address.
* The ingress VTEP (Virtual Tunnel Endpoint) first needs to determine the next hop for the packet.
This involves performing a route lookup using the destination IP address.
* Ingress VTEP encapsulates the packet with VXLAN and sends it on the appropriate VNI segment.
* Once the route lookup is complete, the ingress VTEP encapsulates the packet in a VXLAN header, which includes the appropriate VNI (VXLAN Network Identifier) segment, and forwards it.
* Egress VTEP determines that the host is local to the VNI and switches the packet.
* The egress VTEP receives the encapsulated VXLAN packet, decapsulates it, and then checks its local VNI to determine if the destination host is within the same VNI.
* Egress VTEP bridges the packet after decapsulation.
* After determining the destination host's locality, the egress VTEP bridges the packet to the appropriate interface to deliver it to the final destination.
References:
* Dell Technologies Networking - SONiC
* Dell Enterprise SONiC Deployment Guide
These steps provide a comprehensive guide to understand the correct order of operations in asymmetric IRB (Integrated Routing and Bridging) frame encapsulation within a VXLAN environment.
NEW QUESTION # 30
In what order should these commands be entered to configure an access port in SONiC CLI if the required VLAN is already configured?
Answer:
Explanation:
Explanation:
To configure an access port on the SONiC CLI, the commands should be entered in the following order:
* Enter global configuration mode with configure terminal.
* Specify the interface to configure using interface ethernet 1/1.
* Set the interface to access mode and assign it to VLAN 20 with switchport access vlan 20.
* Exit the interface configuration mode with exit.
References:
* Dell Technologies SONiC Command Reference Guide
* Dell Networking Configuration Guide
NEW QUESTION # 31
What is ECMP?
- A. A routing protocol database filter supporting a maximum of four paths
- B. A routing protocol with multipath support
- C. A Layer 3 routing feature to forward traffic using multiple available paths
- D. A round-robin path distribution mechanism
Answer: C
Explanation:
ECMP (Equal-Cost Multi-Path) is a Layer 3 routing feature that allows traffic to be forwarded using multiple available paths of equal cost. This improves bandwidth utilization and provides redundancy. ECMP is commonly used in modern networks to optimize the flow of traffic and increase the resiliency of network connections.
References:
* Dell Technologies SONiC documentation
* ECMP Configuration Guide
NEW QUESTION # 32
An administrator for a service provider uses this command on a switch:
What is the result of running the command?
- A. Maps the VLAN traffic that a CVLAN identifies to a VNI on a VTEP
- B. Maps the VLAN traffic that a TPID identifies to a VNI on a VTEP
- C. Maps the VLAN traffic that an SVLAN identifies to a VNI on a VTEP
Answer: C
Explanation:
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.
References:
* Dell Technologies SONiC documentation
* VXLAN Configuration Guide
NEW QUESTION # 33
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EMC D-SNC-DY-00 Exam Syllabus Topics:
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