Question

Users on a Linux workstation report that opening internal web applications by hostname takes 5-10 seconds before loading, while accessing the same sites by IP address is instant. Running 'dig +short intranet.corp.local' against the configured DNS server returns the correct record in under 20 ms. Which action is MOST likely to resolve the delay?

Accepted Answer

Reorder the 'hosts:' line in /etc/nsswitch.conf and reduce lookup timeouts, ensuring the resolver does not attempt an unreachable source (such as mDNS/'mdns4') before falling through to DNS

Answer

Flush the ARP cache with 'ip neigh flush all' to force fresh MAC address resolution

Answer

Increase the MTU on the primary interface to 9000 to speed up large HTTP transfers

Answer

Restart the DNS server daemon because its zone file is returning stale records