Configure and Verify Network Connections

Question 1

Which commands will show you the network interfaces’s IP address information?

Answer 1

ifconfig

ip add

Question 2

What are some commands that will query the DNS server on the localhost (127.0.0.1) for the IP address of google.com?

Answer 2

nslookup google.com 127.0.0.1
dig @127.0.0.1 google.com
host google.com 127.0.0.1

Question 3

Which directive in the “hosts:” section of /etc/nsswitch.conf tells the system to check /etc/hosts for DNS resolution first?

Answer 3

files

Question 4

Older Debian and Ubuntu use what configuration method?

Answer 4

Older Debian and Ubuntu use /etc/network/interfaces

Question 5

Newer Debian and Ubuntu use what configuration method?

Answer 5

Newer Debian and Ubuntu versions use /etc/netplan/*

Question 6

Any version of Debian or Ubuntu use what configuration method?

Answer 6

Any version of Debian or Ubuntu use the Network Manager method

Question 7

In CentOS, where are the network configuration files stored?

Answer 7

In CentOS the network configuration files are stored in /etc/sysconfig/network-scripts

Question 8

Mode 0 (balance-rr)

Answer 8

Mode 0 Needs switch support unless directly connected between two computers

Question 9

Mode 1 (active backup), Mode 5 (balance-tlb), Mode 6 (balance-alb)

Answer 9

Mode 1,5,6 does not require switch support

Question 10

Mode 2 (balance-xor), Mode 3 (broadcast), Mode 4 (802.3ad)

Answer 10

Mode 2,3,4 Requires switch support

Question 11

Which file is created to set up a bond interface in CentOS?

Answer 11

To setup a bond interface in CentOS you have to access the file ifcfg-bond0