300-610 Exam Dumps : Designing Cisco Data Center Infrastructure for Traditional and AI Workloads v1.2 (DCID 300-610)

vNIC templates are the precise Cisco UCS mechanism for centrally defining how server vNICs connect to the LAN. A template can specify the fabric, VLAN or VLAN-group membership, MTU, QoS policy, network control policy, adapter policy, MAC-address pool, and related interface properties. Service profiles or service profile templates reference the vNIC template rather than duplicating those settings on every server. Cisco UCS Manager then applies the template-defined values to each bound vNIC. Cisco also documents that if an existing bound vNIC does not match its template, UCS Manager reconfigures it, and future changes to that vNIC must be made through the associated template. An updating vNIC template is therefore appropriate when modifications must propagate to interfaces on already deployed servers, subject to normal UCS change and reboot implications. A service profile template controls the broader server identity and policy composition, but it is not the most specific object for shared VLAN-tagging and vNIC properties. A usNIC connection policy allocates user-space NIC resources for supported applications and does not define general VLAN membership. A network control policy governs behaviors such as CDP, LLDP, MAC registration, uplink-failure handling, and related controls; it does not serve as the reusable VLAN configuration object. Consequently, vNIC templates provide the requested single point of administration and consistent post-deployment propagation across multiple UCS blade-server interfaces. Cisco UCS Central vNIC template guide

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IEEE 802.1AX and the earlier IEEE 802.3ad specification identify link aggregation controlled through LACP. Cisco documents that LACP bundles multiple physical Ethernet interfaces into one logical port channel. A virtual port channel extends that model across two Cisco Nexus peer switches, allowing the attached device to form one standards-based logical channel while the physical members terminate on separate switches. The design increases usable aggregate bandwidth, permits hashing of independent flows across member links, and preserves connectivity after a link or peer-switch failure. Those characteristics address both throughput and resilience without replacing the existing PFC and jumbo-frame configuration. PFC protects selected traffic classes from congestion loss but does not create additional link capacity. Jumbo frames reduce per-packet overhead but likewise do not aggregate bandwidth. DCBX with Enhanced Transmission Selection can negotiate data-center bridging parameters and allocate bandwidth among traffic groups; it manages contention rather than adding physical forwarding capacity. Hierarchical QoS prioritizes and shapes classes but cannot eliminate an undersized aggregate link. Upgrading individual links could increase raw capacity, but Option C is not the action tied to the IEEE link-aggregation standards explicitly cited in the question. vPC with LACP is therefore the intended standards-aligned solution: it combines multiple links, uses the available bandwidth more effectively, and removes a single-switch attachment failure domain while presenting a single logical port channel to the connected system. Cisco Nexus LACP and port-channel configuration guide

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