VDC - Virtual Device Context Flashcards
(36 cards)
What does VDC stand for in NX-OS?
You selected “Virtual Device Context” because it accurately describes the capability in NX-OS that allows a single physical Nexus chassis to be partitioned into multiple virtual switches, each operating independently.
What is the primary function of VDC in a Nexus switch?
You selected “It creates multiple logical switches within a single physical chassis” because VDCs indeed enable you to partition a Nexus switch into several independent virtual switches, allowing for improved resource management and operational efficiency.
Which of the following is true about VDCs?
You selected “Each VDC acts as an independent switch” because each Virtual Device Context operates with its own control plane and configuration, allowing for distinct management and operation within a single physical chassis.
What is required to form a trunk between two VDCs?
You chose “A physical cable must be used” because each Virtual Device Context (VDC) operates like an independent switch, requiring physical connections for inter-VDC communication.
From which VDC can you create, delete, or modify other VDCs?
You selected “Default VDC (Admin VDC)” because it is the only VDC with the necessary privileges to create, modify, or delete other VDCs.
Which command lists all available VDCs in the Nexus switch?
You selected “show vdc” because this command effectively lists all the Virtual Device Contexts (VDCs) that have been created on the Nexus switch
How many VDCs can be created with Supervisor-1 (Sup1) in Nexus 7K?
You chose “4” because Supervisor-1 (Sup1) in the Nexus 7K can support a total of 4 Virtual Device Contexts (VDCs), which includes the default VDC.
Which command is used to switch between VDCs?
You selected “switchto vdc <vdc-number>" because it is the correct command that enables you to switch between different Virtual Device Contexts (VDCs) on a Cisco Nexus switch, allowing for effective management of multiple VDC environments</vdc-number>
What happens when a VDC is deleted?
When a VDC is deleted, all of its ports are automatically moved to the Default or Admin VDC, ensuring that your network interfaces are not disconnected and can still operate under a single management context.
Which command is used to allocate a port to a VDC?
You selected “allocate interface ethernet x/x” because it correctly specifies the command used to assign a physical port to a Virtual Device Context (VDC), allowing you to effectively manage network resources within multiple VDCs.
How can you check which ports are allocated to a specific VDC?
You selected “show vdc membership” because it accurately provides information on which ports are assigned to a specific VDC.
Which user role is required to manage all VDCs in a Nexus switch?
You selected “Network-Admin” because this role has the authority to create, delete, and modify Virtual Device Contexts (VDCs), which is essential for managing multiple VDCs in a Nexus switch
Which resources are shared among all VDCs?
You selected “CPU, Memory, Power Supply” because these resources are indeed shared among all Virtual Device Contexts (VDCs), allowing for efficient use of hardware in a multi-VDC environment.
What happens if you move a port that belongs to a port-group?
You selected “The entire port-group moves” because when a port is part of a port-group, it cannot be moved independently; all ports in the group must move together to maintain the integrity of the configuration.
What is the correct way to return to your original VDC after switching?
You correctly selected “switchback,” as it is the command used to return to your original Virtual Device Context after switching
Can you upgrade the NX-OS software from a non-default VDC?
You selected “No, NX-OS upgrades must be done from Admin VDC,” which is correct because upgrades impact all VDCs and must be managed from the default VDC to ensure consistency across the system.
How many mgmt0 interfaces appear if 4 VDCs are configured on a single physical chassis?
You correctly selected “4” because each of the four VDCs you configured has its own logical mgmt0 interface, allowing them to manage their resources independently while still sharing a single physical mgmt0 port.
Which of the following statements is true regarding mgmt0 interfaces in the same physical Nexus switch?
Your selection of “They cannot ping each other” is correct because mgmt0 interfaces in VDCs are designed to be logically isolated, preventing communication between them within the same physical switch
Which module type is used for Layer 3 (Routing) functionality?
You chose “M Series,” which is correct because it offers both Layer 2 switching and Layer 3 routing capabilities, making it suitable for diverse network functions
If a VDC has only F Series ports assigned, which command will fail?
You chose “no switchport,” which is correct because F Series ports only support Layer 2 functionality, and attempting to convert them to Layer 3 with this command would indeed fail.
What is the preferred “Ha Policy” for a single supervisor module?
Your choice of “Restart” is correct because it allows for recovering the supervisor module without shutting down the entire VDC or affecting other VDCs, ensuring minimal disruption to the system’s operation.
What is the recommended “Ha Policy” for a dual-supervisor environment?
Choosing “Switchover” is correct because it seamlessly transfers control to the backup supervisor, which is essential for maintaining high availability in a dual-supervisor environment.
Which command saves the configuration of all VDCs from the admin VDC?
You selected “copy run start vdc-all,” which is correct because this command successfully saves the configurations of all Virtual Device Contexts from the admin VDC.
What will happen if a VDC does not have any M Series ports assigned?
Your selection is correct because M Series ports are essential for the VDC to perform Layer 3 routing functions. Without them, the VDC can only support Layer 2 switching, limiting its routing capabilities.
