Descriptions cannot synchronize clocks.

DHCP lease durations do not establish NTP sync.

Removing logs destroys forensic evidence instead of fixing clocks.

The IOS NTP client can synchronize to a configured server and expose association/sync status. The statement addresses a different mechanism. Here the engineer specifically proposed configure ntp master on every branch and assume external synchronization; the decisive limitation is that ntp master can make the device act as a local reference but does not establish the requested upstream client association.

Mail exchanger records do not show time synchronization. It concerns a different proposed change, not the change being evaluated.

Trunking does not define an NTP source. A true general network fact is not necessarily the direct diagnosis. The named change was configure ntp master on every branch and assume external synchronization, whose relevant defect is that ntp master can make the device act as a local reference but does not establish the requested upstream client association.

HTTP reachability is not equivalent to NTP clock discipline. It concerns a different proposed change, not the change being evaluated.

VLAN membership is unrelated to NTP association state. That distinction is technically relevant elsewhere, but it does not identify the failure of the proposed look only for the configured ntp server line in running-config. The actual issue is that a command present does not prove the server was reached or selected.

NTP operational commands display selected peers and clock discipline rather than just stored configuration. The statement addresses a different mechanism. Here the engineer specifically proposed look only for the configured ntp server line in running-config; the decisive limitation is that a command present does not prove the server was reached or selected.

Clock synchronization stops when NTP is disabled. A true general network fact is not necessarily the direct diagnosis. The named change was use ntp server pointing at a nonexistent address as a reliable source, whose relevant defect is that an unreachable upstream cannot supply synchronized time.

An NTP master can provide local time to clients, but it is not an independent accurate external clock. The statement addresses a different mechanism. Here the engineer specifically proposed use ntp server pointing at a nonexistent address as a reliable source; the decisive limitation is that an unreachable upstream cannot supply synchronized time.

VLAN allowance does not create a clock reference. It concerns a different proposed change, not the change being evaluated.

Removing logs destroys forensic evidence instead of fixing clocks. It concerns a different proposed change, not the change being evaluated.

DHCP lease durations do not establish NTP sync. This observation would apply to another device or feature, not the proposed set only the same interface description on both routers. For this scenario, descriptions cannot synchronize clocks is the direct cause.

Consistent time improves timestamp ordering across logs; both devices must actually discipline their clocks. A true general network fact is not necessarily the direct diagnosis. The named change was set only the same interface description on both routers, whose relevant defect is that descriptions cannot synchronize clocks.

ARP resolves nearby IP-to-MAC addresses rather than DNS names.

STP state is unrelated to hostname lookup.

The IP-based session confirms sufficient path reachability for this symptom.

Name records do not create the DHCP server exchange.

A healthy relay path does not create available leases; both transport and pool capacity must be verified.

Correct VLAN placement is necessary in many designs but cannot alone establish that DHCP DISCOVER and OFFER traffic reaches the client.

Interface metadata is not a DHCP option.

Longer leases do not supply DHCP option 3 (default router) or option 6 (DNS server) to clients.

CAM aging does not supply client TCP/IP options.

This space is link-local rather than public global unicast.

A web proxy does not implement DHCP address assignment.

Root priority alone does not define a DHCP scope or relay.

DNS maps hostnames to addresses; bad records can break name access even when IP routing succeeds. The statement addresses a different mechanism. Here the engineer specifically proposed change the physical switch duplex as the first action despite successful ip connection; the decisive limitation is that the IP-based session confirms sufficient path reachability for this symptom.

STP state is unrelated to hostname lookup. It concerns a different proposed change, not the change being evaluated.

ARP resolves nearby IP-to-MAC addresses rather than DNS names. That distinction is technically relevant elsewhere, but it does not identify the failure of the proposed change the physical switch duplex as the first action despite successful ip connection. The actual issue is that the IP-based session confirms sufficient path reachability for this symptom.

Name records do not create the DHCP server exchange. This observation would apply to another device or feature, not the proposed increase the ospf router id to force client address allocation. For this scenario, oSPF ID values do not issue DHCP leases is the direct cause.

DHCP supplies client address, mask, router and DNS options; a missing lease can arise from scope or relay issues. A true general network fact is not necessarily the direct diagnosis. The named change was increase the ospf router id to force client address allocation, whose relevant defect is that oSPF ID values do not issue DHCP leases.

SSID names do not determine DHCP allocation for a wired client. It concerns a different proposed change, not the change being evaluated.