[Nov 23, 2024] Get New D-SNC-DY-00 Certification – Valid Exam Dumps Questions
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EMC D-SNC-DY-00 Exam Syllabus Topics:
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NEW QUESTION # 18
What does the show vian command display?
- A. Only VLANs in an active state
- B. All configured VLANs
- C. All 4094 VLANs
Answer: B
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 # 19
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 an SVLAN 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 a CVLAN identifies to a VNI on a VTEP
Answer: A
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 # 20
Refer to the exhibit.
What is the purpose of the static route?
- A. Verify that the 12.0.0.0 network is active and reachable.
- B. Provide a route to the 192.168.45.0 network.
- C. Provide a route to the 12.0.0.0 network.
- D. Verify that devices in VLAN 45 are reachable.
Answer: C
Explanation:
The static route shown in the exhibit S* 12.0.0.0/16 via 192.168.45.254 Vlan45 is used to provide a route to the 12.0.0.0 network. This static route directs traffic destined for the 12.0.0.0/16 network through the gateway at 192.168.45.254, which is associated with VLAN 45. This configuration is typically used to ensure that traffic can reach a specific network via a defined path.
References:
* Dell Technologies SONiC Routing Guide
* Dell Networking Configuration Guide
NEW QUESTION # 21
What are three characteristics of VLAN translation?
- A. The SVLAN header is replaced with a VNI if the provider network uses a VXLAN overlay.
- B. SVLAN configuration for both Q-in-Q VLAN tunneling and VLAN translation is possible on the same interface.
- C. Trunk or access ports can be configured as members of any VLANs that are not used as an SVLAN.
- D. VLAN translation is not supported on MC-LAG port channel interfaces.
- E. By default, VLAN stacking is enabled on Z9432F-ON switches.
Answer: B,C,D
Explanation:
* VLAN translation is not supported on MC-LAG port channel interfaces (A): This is a restriction commonly seen in network configurations involving Multi-Chassis Link Aggregation (MC-LAG) where VLAN translation capabilities are not applied.
* Trunk or access ports can be configured as members of any VLANs that are not used as an SVLAN (B): This ensures that the VLAN configuration on trunk or access ports is flexible and does not overlap with Service VLANs (SVLANs).
* SVLAN configuration for both Q-in-Q VLAN tunneling and VLAN translation is possible on the same interface (E): This allows for complex VLAN tagging and translation configurations to be applied to the same interface, supporting advanced networking scenarios.
References:
* Dell Technologies SONiC documentation
* Dell Networking Configuration Guide
NEW QUESTION # 22
Create port channel 10 on interfaces Eth 1/11 and 1/12, so that it connects to an already configured switch. A server will be connected on Eth 1/1. Both the server and port channel need VLAN 1 untagged and only VLAN
10 tagged.
Complete the configuration on Switch A.
Answer:
Explanation:
see the explanation for all step by step solution with all explanation.
Explanation:
Here are the steps to configure the required port channel and VLAN settings on Switch A:
* Enter Configuration Mode:
SwitchA# configure terminal
* Create Port Channel 10:
SwitchA(config)# interface port-channel 10
SwitchA(config-if-po10)# switchport mode trunk
SwitchA(config-if-po10)# switchport trunk native vlan 1
SwitchA(config-if-po10)# switchport trunk allowed vlan 1,10
* Assign Interfaces Eth 1/11 and Eth 1/12 to Port Channel 10:
SwitchA(config)# interface ethernet 1/11
SwitchA(config-if-eth1/11)# channel-group 10 mode active
SwitchA(config-if-eth1/11)# exit
SwitchA(config)# interface ethernet 1/12
SwitchA(config-if-eth1/12)# channel-group 10 mode active
SwitchA(config-if-eth1/12)# exit
* Configure Interface Eth 1/1 for Server Connection:
SwitchA(config)# interface ethernet 1/1
SwitchA(config-if-eth1/1)# switchport mode trunk
SwitchA(config-if-eth1/1)# switchport trunk native vlan 1
SwitchA(config-if-eth1/1)# switchport trunk allowed vlan 1,10
SwitchA(config-if-eth1/1)# end
* Save Configuration:
SwitchA# write memory
Comprehensive Detailed Step by Step Explanation with References:
* Enter Configuration Mode:
* Start by entering the global configuration mode to make changes to the switch configuration.
* Create Port Channel 10:
* Enter the port channel interface configuration mode using interface port-channel 10.
* Set the port channel to trunk mode with switchport mode trunk.
* Specify VLAN 1 as the native VLAN (untagged) using switchport trunk native vlan 1.
* Allow VLANs 1 and 10 on the trunk with switchport trunk allowed vlan 1,10.
* Assign Interfaces Eth 1/11 and Eth 1/12 to Port Channel 10:
* Enter interface configuration mode for ethernet 1/11 and ethernet 1/12.
* Assign each interface to port channel 10 using the channel-group 10 mode active command.
* Exit the interface configuration mode.
* Configure Interface Eth 1/1 for Server Connection:
* Enter interface configuration mode for ethernet 1/1.
* Set the interface to trunk mode with switchport mode trunk.
* Specify VLAN 1 as the native VLAN using switchport trunk native vlan 1.
* Allow VLANs 1 and 10 on the trunk with switchport trunk allowed vlan 1,10.
* Exit the configuration mode.
* Save Configuration:
* Ensure the configuration is saved so it persists 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 port channel and VLAN settings on Switch A to meet the specified requirements for server and trunk connections.
NEW QUESTION # 23
What are two characteristics of route maps in Enterprise SONIC?
- A. Route-map names are not case-sensitive.
- B. Each route map clause has the type values of Match. Set. and Act.
- C. The permit or deny clause In route maps permits or rejects the matching routes from being redistributed.
- D. They are a series of commands that contain a matching criterion and action.
Answer: C,D
Explanation:
Route maps in Enterprise SONIC are used for controlling and modifying routing information. They contain a series of commands with matching criteria and actions. The permit or deny clause within route maps determines whether the matching routes are permitted or denied from being redistributed.
References:
* Dell Technologies SONiC Route Map Configuration Guide
* Dell Networking Configuration Guide
NEW QUESTION # 24
Refer to the exhibits.
PC1 has a valid address on the 192.168.10.0 network, and PC2 has a valid address on the 192.168.20.0 network.
What happens when a ping command is issued between PC1 and PC2?
- A. The ping is unsuccessful because there is no route to the VLAN 10 gateway address of 192.168.10.254.
- B. The ping is successful because there are two routes from switch1 to switch2 which are connected to PC2.
- C. The ping is unsuccessful because there is no route from switch 1 to the 192.168.20.0 network.
- D. The ping is successful because there is a route to 10.0.1.1, which is connected to 1(10.2.2, which is connected to PC2.
Answer: C
Explanation:
* Network Topology Analysis:
* PC1 is on VLAN 10 with an IP address in the 192.168.10.0/24 subnet.
* PC2 is on VLAN 20 with an IP address in the 192.168.20.0/24 subnet.
* The network uses OSPF for routing between the switches.
* The OSPF area is 0, and all switches have loopback interfaces for OSPF.
* Routing Table Examination (from switch1):
* The show ip route command output from switch1 provides a detailed look at the routing table.
* Routes to the 192.168.10.0/24 network (directly connected via Vlan10) are present.
* No routes to the 192.168.20.0/24 network are listed in switch1's routing table.
* Explanation:
* For PC1 to communicate with PC2, switch1 must have a route to the 192.168.20.0/24 network.
* The absence of a route to the 192.168.20.0/24 network in switch1's routing table means that switch1 cannot forward packets destined for 192.168.20.0/24.
* Therefore, any ping from PC1 to PC2 will be unsuccessful as switch1 does not know how to route packets to PC2's network.
* Verification with Dell SONiC:
* In Dell SONiC environments, OSPF is configured to ensure dynamic routing.
* The configuration must include all necessary networks for inter-switch routing.
* If a network (like 192.168.20.0/24) is not included in OSPF configurations on switch1, routes to that network will not be advertised or learned, leading to failed connectivity tests like the ping from PC1 to PC2.
References:
* Dell Enterprise SONiC Deployment Guide
* Dell Technologies Networking - SONiC
NEW QUESTION # 25
What are the supported modes for the QSFP28 ports on an S5248F?
- A. 1x100G, 1x40 G, 2x50 G, and 4x25 G
- B. 1x400G, 2x200 G, 4x25 G. and 4x10 G
- C. 1x100G, 1x40 G, 4x25 G, and 4x10 G
- D. 1x200G, 1x100 G, 1x40 G, and 4x25 G
Answer: A
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 # 26
What interface must be selected when configuring the management port from within the MF-CLI environment?
- A. mgmt 1/1/1
- B. Management 0
- C. eth0
- D. ma 0/1
Answer: C
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 # 27
Which two elements must be included in the show mclag interface x x command?
- A. MC-LAG VLAN id
- B. MC-LAG domain id
- C. MC-LAG port channel number
- D. Peer-link port channel number
Answer: C,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 # 28
Which protocol is used to perform an automated installation of Enterprise SONiC?
- A. HTTP
- B. SCP
- C. SFTP
Answer: A
Explanation:
The automated installation of Enterprise SONiC is typically performed using the HTTP protocol. During the Zero Touch Provisioning (ZTP) process, the switch retrieves configuration files and software images from an HTTP server, allowing for automated and streamlined deployments.
References:
* Dell Technologies SONiC documentation
* ONIE User Guide
NEW QUESTION # 29
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.
Answer:
Explanation:
see the explanation for all step by step solution with all explanation.
Explanation:
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 References:
* 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.
References:
* 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.
NEW QUESTION # 30
How many port channels can be assigned to a single port?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: D
Explanation:
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.
References:
* Dell Networking SONiC: How to Configure Port Channels
* Dell Technologies InfoHub
NEW QUESTION # 31
Refer to the exhibit.
Which three actions can a customer take to change interface Eth1/10 to operate in access mode for VLAN 40?
- A. Enter it into the relevant interface.
- B. Delete VLAN 40.
- C. Configure the access mode for the switch port.
- D. Shut down the relevant interface.
- E. Remove the current access VLAN configuration.
Answer: A,C,E
Explanation:
* Configure the access mode for the switch port (A): This involves setting the switch port to operate in access mode.
* Remove the current access VLAN configuration (D): Before changing the VLAN, the current configuration must be cleared.
* Enter it into the relevant interface (E): Apply the new configuration to the specific interface, Eth1/10.
Steps:
* interface Ethernet 1/10
* no switchport access vlan <current VLAN> (Remove current VLAN)
* switchport mode access
* switchport access vlan 40
References:
* Dell Technologies SONiC documentation
* Dell Networking Configuration Guide
NEW QUESTION # 32
What is the impact of entering the qos-mode uniform command on a VTEP interface?
- A. The local VNI value is aligned to the VNI of the remote VTEP interface.
- B. A uniform VNI value is configured on local and remote VTEP interfaces.
- C. The DCSP values for the local and remote VTEPs are synchronized.
- D. The payload DSCP value is copied to the outer header DSCP value.
Answer: D
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 # 33
Refer to the exhibit.
What can be determined from this show command?
- A. There is a 10% probability that traffic is marked as congested
- B. ECN is enabled for all colors
- C. Traffic below 100 KB is marked as congested
- D. ECN is enabled for all DSCP values
Answer: B
Explanation:
The output of the command show qos wred-policy pfc34 shows the ECN (Explicit Congestion Notification) configuration for the policy pfc34. The line ecn: ecn_all indicates that ECN is enabled for all traffic classes (all DSCP values). Additionally, the green-min-threshold, green-max-threshold, and green-drop-probability settings are shown, but there is no indication of a 10% probability for marking traffic as congested. Therefore, the correct answer is B.
References:
* Dell Enterprise SONiC documentation
* Dell Technologies InfoHub
NEW QUESTION # 34
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 # 35
What is ECMP?
- A. A Layer 3 routing feature to forward traffic using multiple available paths
- B. A routing protocol with multipath support
- C. A routing protocol database filter supporting a maximum of four paths
- D. A round-robin path distribution mechanism
Answer: A
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 # 36
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 # 37
......
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