Associate NOC Engineer

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Associate NOC Engineer Interview Questions and Answers

Updated 7 Aug 2023

Q1. How a packet travels in a network

Ans.

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

Q2. Explain the working of traceroute

Ans.

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

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