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Router names are not selection inputs for DR election. With unequal priority values, a name-based ordering is irrelevant.

Unlike an OSPF path cost, interface priority favors the higher configured value during DR selection. Priority 5 does not beat 20.

A priority-zero interface may participate in the segment but cannot be elected DR/BDR. Zero is an exclusion, not a highest rank.

A /28 supplies 16 total addresses and 14 usable, far below the stated VLAN requirement. Adding more DHCP leases cannot increase subnet capacity.

A /27 supplies only 30 ordinary usable addresses, which cannot fit the 48 required devices including gateway and reserved hosts.

A /25 would fit but wastes a larger address block. The question asks for the minimum fitting prefix, and /26 is sufficient.

Client IP default routes are separate from how the controller's physical uplinks aggregate. Changing client gateways does not produce a logical Ethernet bundle.

Unrelated access ports cannot be assumed to aggregate controller traffic consistently and may create unwanted VLAN or loop conditions. They do not implement the requested logical uplink.

A bundle requires consistent VLAN and member parameters. Conflicting native VLANs can break aggregation or misclassify untagged controller management frames.

IPv4 `ip route` expects IPv4 network syntax and cannot directly express these IPv6 literal prefixes and neighbors. The IPv6 command family is required.

Assigning a remote destination prefix to a local interface may create an incorrect connected network rather than a static path through the existing next-hop router.

A default ::/0 route would forward every otherwise unmatched IPv6 destination, not just the specified remote /64. It is unnecessarily broad for this requirement.

OSPF cost can influence which path carries traffic but does not implement per-class token-bucket policing or shaping rate controls.

VLAN segmentation separates Layer 2 broadcast domains and does not alone enforce a transmit-rate profile for packets traversing an egress queue.

This reverses the normal differences: shaping is associated with queuing and delaying bursts, whereas policing can discard or remark traffic beyond the configured profile.

Line VTY credentials authenticate remote management access but are separate from the privileged EXEC enable credential. IOS normally checks the configured enable secret for escalation when both enable password and enable secret exist, rather than reusing a VTY password.

IOS does not generally require a two-stage chain combining enable password and enable secret. When enable secret is supported and configured, it normally takes precedence; retaining the older password does not become an additional factor.

Service password-encryption commonly hides old enable password text with reversible type-7 encoding. It does not make that credential cryptographically stronger or change the documented priority of a configured enable secret for privileged mode.

By definition 204 No Content does not contain a representation body. A client expecting JSON from 204 will mishandle an otherwise successful operation.

Authentication denial typically uses 401 or 403; 5xx codes represent server errors. These 2xx responses have different success semantics, not the asserted failures.

Different 2xx codes are distinct forms of successful processing and should not all trigger blind retry, which could duplicate resource creation.

Passive OSPF affects protocol Hellos and adjacency on the interface, not ordinary data-plane forwarding to users. Their IP gateway can remain functional.

DHCP filtering uses snooping/ACL mechanisms, not OSPF passive-interface control. Client address allocation can continue independently of routing-protocol neighbor formation.

HSRP is a separate first-hop redundancy protocol and is not enabled by an OSPF passive-interface command. No virtual gateway MAC change follows automatically.

SSID information can be inferred through other association and probing exchanges, so hidden beacon naming is not a strong secrecy control.

802.1X involves authentication exchange and a backend identity policy. Suppressing SSID broadcast does not configure or enforce enterprise credentials.

Hiding a network name does not establish encryption keys or select AES-CCMP; an open hidden network can still carry unprotected traffic.

Removing a configured gateway makes one VLAN less connected, not better routed. Both valid SVIs are necessary for direct inter-VLAN routes.

Overlapping subnet allocations confuse IP gateway and ARP assumptions and do not correctly enable inter-VLAN Layer 3 communication.

A default route affects next-hop selection only after Layer 3 forwarding is enabled; the switch cannot route between its VLAN interfaces with global routing disabled.

Interface gateway configuration affects routing reachability but does not control the implicit deny semantics of an applied ACL.

An unmatched packet is not implicitly allowed simply because administrators omitted a textual deny entry. The default tail behavior is deny.

ACL entries are processed top to bottom until the first match. Reverse evaluation would produce very different permit/deny outcomes and is not the normal rule.