Associate NOC Engineer Interview Questions and Answers

A packet travels in a network by being encapsulated at each layer of the OSI model and then routed through switches and routers.

• Packet is created at the application layer and then encapsulated with headers at each subsequent layer (transport, network, data link).

• Packet is then transmitted over physical medium (copper wire, fiber optic cable, wireless) to the destination.

• Routers and switches use IP addresses and MAC addresses to forward the packet to the correct destination.

• Pa...read more

Traceroute is a network diagnostic tool used to track the path packets take from one networked device to another.

• Traceroute sends out packets with increasing TTL values to map the path to the destination.

• Each router along the path decrements the TTL and sends back an ICMP Time Exceeded message.

• The sender records the IP address of each router to trace the route taken by the packets.

• Traceroute helps identify network issues like high latency or packet loss.

• Example: 'traceroute w...read more