4 interviews, 2 over the phone, 2 face to face. The most redundant question I was asked is how much money do you require to come work for us. I was asked where in Linux do you change the IP address. A. # cd /etc/sysconfig/network-scripts/ifcfg-eth0 # vi ifcfg-eth0 append or modify the following: # Intel Corporation 82573E Gigabit Ethernet Controller (Copper) DEVICE=eth0 BOOTPROTO=static DHCPCLASS= HWADDR=00:30:48:56:A6:2E IPADDR=10.10.29.66 NETMASK=255.255.255.192 ONBOOT=yes Save and close the file. Define default gateway (router IP) and hostname in /etc/sysconfig//network file: # vi /etc/sysconfig/network Append/modify configuration as follows: NETWORKING=yes HOSTNAME=www1.nixcraft.in GATEWAY=10.10.29.65 Save and close the file. Restart networking: # /etc/init.d/network restart Make sure you have correct DNS server defined in /etc/resolv.conf file: # vi /etc/resolv.conf Setup DNS Server as follows: nameserver 10.0.80.11 nameserver 10.0.80.12 nameserver 202.67.222.222 Save and close the file. Now you can ping the gateway/other hosts: $ ping 10.0.80.12 Output: PING 10.0.80.12 (10.0.80.12) 56(84) bytes of data. 64 bytes from 10.0.80.12: icmp_seq=1 ttl=251 time=0.972 ms 64 bytes from 10.0.80.12: icmp_seq=2 ttl=251 time=1.11 ms You can also check for Internet connectivity with nslookup or host command: $ nslookup cyberciti.biz Output: Server: 10.0.80.11 Address: 10.0.80.11#53 Non-authoritative answer: Name: cyberciti.biz Address: 75.126.43.232 You can also use host command: $ host nixcraft.in Output: nixcraft.in has address 75.126.43.232 nixcraft.in mail is handled by 10 mail.nixcraft.in. - Full answer