1) First interviewer ask me my introduction 2) He asked about my project. 3) Then ask why i am changing my field. 4) what i know about BT Then go to technical round 5) what do i know about ip address and types or ip 6) classes of ip address and where we use? 7) what do i know about class D ip 8) what is subnetting why we use or what i know about subnet mask? 9) 3 vlan can communicate to each other or not? Give answer 10) Explain OSI model all layes with protocols? 11) How TCP/IP IS diffrent from OSI model? 12) what is port no. And then ask port no. Of dhcp. Dns 13) what is natting? Types of natting where we use patting? 14) what i know about firewall and how it works 15) how i creat policy in paloalto? And sp3 architecture? 16) what is HA? And diffrence between active active HA or active passive HA? 17) am i hear about malware how this attack happen? 18) how i connect to the internet? 19) how i troubleshoot if costomer is not able to firewall? 20) Am i willing to relocate? 21) At last they ask any questions in my mind??