commands

Question 1

iproute/iproute2

Answer 1

Provides the command “ip” to control links, addresses, routes, and so on.
Provides the command “ss” to explore network sockets

Question 2

net-tools

Answer 2

iproute’s predecessor.
Provides the command “ifconfig” to configure interfaces.
Provides the command netstat to explore network sockets

Question 3

wpa_supplicant

Answer 3

Required for working with wifi networks.

Question 4

dhclient

Answer 4

Tool to configure interfaces using Dynamic Host Configuration Protocol

Question 5

dhcpcd

Answer 5

It is a daemon of dhclient and is replacing dhclient

Question 6

ifupdown

Answer 6

Series of shell scripts to start (ifup) and stop (ifdown) interfaces
These are getting phased out by most linux distros

Question 7

NetworkManager

Answer 7

Widespread network manager among distros.
Graphical and text-based configurations tools to manage connections
Can use ifconfig or ip, as appropriate

Question 8

systemd-networkd

Answer 8

module for the systemd system management suite of software
often used on modern distros where there isn't a desktop environment
Provides the networkctl took to monitor interface information

Question 9

udev

Answer 9

Software responsible for recognizing network hardware and making it available to the system.
Uses predictable network interface names

Question 10

lspci and lsusb

Answer 10

show information about PCI and USB devices

Question 11

lshw

Answer 11

command to show useful information about system hardware

Question 12

ethtool

Answer 12

Command that can show more specific information about Ethernet adapters

sudo ethtool enp0s3

Question 13

iwconfig/iwlist

Answer 13

similar to ifconfig but for wireless networking interfaces.

Can only connect to WEP networks and not WPA networks.

Question 14

wpa_supplicant

Answer 14

tool to connect to WPA2 networks, which offer more security

Question 15

networkctl status (optional: [interface])

Answer 15

See entire network configuration for a interface

Question 16

ifconfig [interface] up/down

Answer 16

sets an interface up or down

Question 17

ifconfig [interface] [ipaddress with cidr]

Answer 17

sets an ip address for an interface

Question 18

route add default gw [ip address]

Answer 18

add default gateway

Question 19

ip address add [ip address with cidr] dev [interface]

Answer 19

Set ip address to the specificed interface of the device.

Sets up automatic routes within local system

Question 20

ip link set up/down [interface]

Answer 20

Set the device to up or down so it can/can’t be used.

Question 21

ip route add default via [ip address] (optional: dev [interface])

Answer 21

add route for default gateway

Question 22

can you add two ip addresses to an interface?

Answer 22

yes you can

Question 23

ip address delete [ip address with cider] dev [interface]

Answer 23

delete an ip address from a specific interface on the device

Question 24

echo “nameserver [server address]”&raquo_space; /etc/resolv.conf

Answer 24

Place where DNS resolver will be at

Question 25

dhclient -v [interface]

Answer 25

v = verbose. | Show us what is going on as interface sends dhcp request

Question 26

systemctl status dhcpcd

Answer 26

show activitiy of dhcpcd

Question 27

sudo dhcpcd -k

Answer 27

release dhcp address to server

Question 28

sudo dhcpcd (optional: [interface])

Answer 28

Get dhcp address on all avaliable interfaces