When a DNS server accepts and uses incorrect information from a host that has no authority giving that information then it is called :

In a network, if P is the only packet being transmitted and there was no earlier transmission. Which of the following delays could be zero

Transmission data rate is decided by :

Network congestion occurs………….

…………. Is a function in router that allows dumping of invalid packet for a specific network  instead of forwarding.

Wildcard domain names start with label :