[Nov 11, 2024] 100% Real & Accurate D-SNC-DY-00 Questions with Free and Fast Updates
Self-Study Guide for Becoming an Dell SONiC Deploy Exam Expert
NEW QUESTION # 27
Which two elements are configured when RoCE is enabled?
- A. ETS
- B. PFC
- C. IB
- D. TCP
Answer: A,B
Explanation:
When RDMA over Converged Ethernet (RoCE) is enabled, Enhanced Transmission Selection (ETS) and Priority Flow Control (PFC) are two key elements that need to be configured. ETS allows for bandwidth allocation among different traffic classes, and PFC provides lossless Ethernet operation for specific traffic classes to support low-latency, high-performance network communication.
References:
* Dell Technologies SONiC documentation
* RDMA over Converged Ethernet Configuration Guide
NEW QUESTION # 28
What is an iBGP neighbor relationship?
- A. Two BGP neighbors share L2VPN EVPN advertisements.
- B. Two BGP neighbors share only private networks.
- C. Two BGP neighbors share only native BGP networks.
- D. Two BGP neighbors have the same autonomous system numbers
Answer: D
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 # 29
What is the impact of entering the qos-mode uniform command on a VTEP interface?
- A. The payload DSCP value is copied to the outer header DSCP value.
- B. A uniform VNI value is configured on local and remote VTEP interfaces.
- C. The local VNI value is aligned to the VNI of the remote VTEP interface.
- D. The DCSP values for the local and remote VTEPs are synchronized.
Answer: A
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 # 30
Which network devices route unencapsulated user traffic in a symmetric IRB overlay network?
- A. Capability extended next hop router and leaf router
- B. Source VTEP and destination VTEP
- C. Leaf router and spine router
- D. Autonomous system boundary router and source VTEP
Answer: B
Explanation:
In a symmetric Integrated Routing and Bridging (IRB) overlay network, the Source Virtual Tunnel End Point (VTEP) and the Destination VTEP route unencapsulated user traffic. Symmetric IRB ensures that routing occurs at both the ingress and egress VTEPs, allowing for optimized traffic flow and efficient network operations.
References:
* Dell Technologies SONiC documentation
* VXLAN Configuration Guide
NEW QUESTION # 31
Which two elements must be included in the show mclag interface x x command?
- A. MC-LAG domain id
- B. Peer-link port channel number
- C. MC-LAG VLAN id
- D. MC-LAG port channel number
Answer: B,D
Explanation:
The show mclag interface command provides information about the multi-chassis link aggregation (MC-LAG) configuration. Essential elements that must be included are the peer-link port channel number and the MC-LAG port channel number. These parameters are critical for identifying the interface and its associated link aggregation settings.
References:
* Dell SONiC Command Reference Guide
* Dell Technologies InfoHub
Topic 1, SIMULATION / Lab based
NEW QUESTION # 32
Which two things does the no vrrp 100 address-family ipv6 command delete?
- A. Identifier
- B. Address-family
- C. Interface
- D. Authentication
- E. Version
Answer: A,B
Explanation:
The no vrrp 100 address-family ipv6 command deletes the VRRP (Virtual Router Redundancy Protocol) identifier (A) and the address-family configuration (D) for VRRP group 100. This effectively removes the VRRP configuration for the specified address family.
References:
* Dell Technologies SONiC documentation
* VRRP Configuration Guide
NEW QUESTION # 33
Refer to the exhibit.
What type of route is shown?
- A. Type 3 host route from external VTEP
- B. Type 3 host route from another VTEP
- C. Type 2 host route from another VTEP
- D. Type 5 host route from another VTEP
Answer: C
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 # 34
How many ports are in each port-group on the S5200 series switches?
- A. 0
- B. 1
- C. 2
Answer: C
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 # 35
Enterprise SONiC Switch 1 and Switch 2 are part of a symmetric VXLAN fabric in a data center environment.
Switch 1 has learned MAC addresses from its local VLANs.
What role does BGP EVPN play in this scenario?
- A. Distributes locally learned MAC addresses to Switch 2
- B. Enables efficient communication across the VXLAN fabric
- C. Establishes Layer 2 connectivity between Switch 1 and Switch 2
Answer: A
Explanation:
BGP EVPN (Border Gateway Protocol Ethernet VPN) is used in a VXLAN fabric to distribute MAC address reachability information between switches. In this scenario, Switch 1 uses BGP EVPN to advertise the locally learned MAC addresses to Switch 2. This distribution of MAC addresses enables the switches to build and maintain an efficient forwarding table, facilitating communication across the VXLAN fabric.
References:
* Dell Technologies SONiC documentation
* BGP EVPN Configuration Guide
NEW QUESTION # 36
What interface must be selected when configuring the management port from within the MF-CLI environment?
- A. eth0
- B. mgmt 1/1/1
- C. Management 0
- D. ma 0/1
Answer: A
Explanation:
* Dell SONiC Management Interface Configuration:
* In Dell SONiC, the management port configuration is a crucial aspect that allows administrators to access and manage the network device.
* The management interface typically provides out-of-band management access to the device, ensuring that even if the data network is down, the management network can still be accessed.
* Common Interface Naming Conventions:
* mgmt 1/1/1: This naming convention is not typically used in Dell SONiC environments for management interfaces.
* ma 0/1: This could be a potential naming convention but is not standard for Dell SONiC.
* Management 0: This is a logical name but does not align with the standard interface naming conventions used in Dell SONiC.
* eth0: This is the standard naming convention used for the primary management interface in most Linux-based systems, including Dell SONiC.
* Verification with Dell SONiC Documentation:
* Dell SONiC documentation specifies that the management interface is usually named eth0.
* When accessing the management interface within the MF-CLI (Management Framework Command Line Interface) environment, eth0 is the correct interface to configure.
* Practical Configuration Example:
* When configuring the management port, the command might look something like:
config interface ip add eth0 <management_ip_address>/<subnet_mask>
* This command specifies the management interface eth0 and assigns it an IP address for network management purposes.
References:
* Dell Enterprise SONiC Deployment Guide
* Dell Technologies Networking - SONiC
This detailed step-by-step explanation confirms that the correct answer is D, providing insights into the typical interface naming conventions and configuration practices within the Dell SONiC environment.
NEW QUESTION # 37
VLAN 40 is configured in Switch A with an anycast-address of 192.168.40.254/24. The ARP neighbor suppression is enabled. Use the simulator to create a VTEP named vtep1 and assign an IP address of
10.10.10.1. Map the VNI 400 to VLAN 40.
Answer:
Explanation:
see the explanation for all step by step solution with all explanation.
Explanation:
Here are the steps to create the VTEP and map the VNI to the VLAN:
* Enter Configuration Mode:
SwitchA# configure terminal
* Create VTEP Interface:
SwitchA(config)# interface vtep1
SwitchA(config-if-vtep1)# ip address 10.10.10.1/24
SwitchA(config-if-vtep1)# exit
* Map VNI 400 to VLAN 40:
SwitchA(config)# vlan 40
SwitchA(config-vlan)# vn-segment 400
SwitchA(config-vlan)# exit
* Enable ARP Neighbor Suppression:
SwitchA(config)# interface Vlan40
SwitchA(config-if-Vlan40)# ip address 192.168.40.254/24
SwitchA(config-if-Vlan40)# vxlan arp-suppression
SwitchA(config-if-Vlan40)# exit
* Save Configuration:
SwitchA# write memory
* Enter Configuration Mode:
* Begin by entering the global configuration mode to make changes to the switch configuration.
* Create VTEP Interface:
* Enter the interface configuration mode for the VTEP interface named vtep1 using interface vtep1.
* Assign the IP address 10.10.10.1/24 to the VTEP interface using the ip address command.
* Exit the interface configuration mode.
* Map VNI 400 to VLAN 40:
* Enter the VLAN configuration mode for VLAN 40 using vlan 40.
* Map the VNI 400 to VLAN 40 using the vn-segment 400 command.
* Exit the VLAN configuration mode.
* Enable ARP Neighbor Suppression:
* Enter the interface configuration mode for VLAN 40 using interface Vlan40.
* Assign the anycast IP address 192.168.40.254/24 to the VLAN interface using the ip address command.
* Enable ARP neighbor suppression using the vxlan arp-suppression command.
* Exit the interface 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 a VTEP and map the VNI to VLAN 40 on Switch A, ensuring the specific requirements for IP addressing and ARP neighbor suppression are met.
NEW QUESTION # 38
What does the show vian command display?
- A. All configured VLANs
- B. All 4094 VLANs
- C. Only VLANs in an active state
Answer: A
Explanation:
The show vlan command displays all configured VLANs on the device, including their status, ports, and other relevant details. It does not limit the display to only active VLANs or all possible VLANs but shows those that are currently configured.
References:
* Dell Technologies SONiC Command Reference Guide
* Dell Networking Configuration Guide
NEW QUESTION # 39
How many times must BGP be configured when running symmetric IRB with two VFRs?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
When running symmetric Integrated Routing and Bridging (IRB) with two Virtual Forwarding Routers (VFRs), BGP must be configured twice. Each VFR will have its own BGP instance to handle the routing information.
References:
* Dell Technologies SONiC Routing Guide
* Dell Networking Configuration Guide
NEW QUESTION # 40
Which two additional Q-in-Q VLAN tunnel configuration steps must be followed if the provider network uses a VXLAN overlay?
- A. Map the SVLAN traffic to a VNI.
- B. Configure the BGP route-target and route-distinguisher.
- C. Configure VLAN Translation.
- D. Remove the CVLAN-to-SVLAN mapping.
Answer: A,C
Explanation:
* 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.
References:
* Dell Technologies SONiC documentation
* VXLAN Configuration Guide
NEW QUESTION # 41
What is ECMP?
- A. A round-robin path distribution mechanism
- B. A routing protocol with multipath support
- C. A Layer 3 routing feature to forward traffic using multiple available paths
- D. A routing protocol database filter supporting a maximum of four paths
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 # 42
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