Networking

Question 1

Fixed DHCP

Answer 1

Computer get same IP every time it boots

Question 2

Dynamic DHCP

Answer 2

IP computer gets may be different each time

Question 3

iwlist command

Answer 3

• Identify near by wireless networks
• scan/scannig

Question 4

iwconfig command

Answer 4

Connect / disconnect to specific networks

Question 5

ifconfig command

Answer 5

• Bring up or shut down a specific network connection and associated IP/netmask to particular piece of network hardware

Question 6

route command

Answer 6

Adjust a computer’s routing table

Question 7

etc/resolv.conf

Answer 7

Config file that contains

• IP of up to three DNS servers
• Name of the computers internet domain
• All other domains that should be searched when a user doesn’t put in a domain name from the host name.

Question 8

dhclient & dhcpcd command

Answer 8

Manage DHCP settings

Question 9

ping command

Answer 9

as ping but will keep sending packets out (1perSecond) until interrupted with Ctrl+C

Question 10

What is Linux major vulnerability?

Answer 10

• Malicious actors breaking in and abusing server programs that are running 24/7
• Important to not to run servers/services you do not need

Question 11

Linux hardening

Answer 11

• Turn off servers/services you do not need
• Enable a firewall
• Use good passwords
• Be suspicious (phising & social engineering & more rare malware)
• Keep software updated

Question 12

Are all Linux distros capable of creating a network connection automatically?

Answer 12

No

Question 13

lo

Answer 13

• Loopback interface
• Exists even if there is no hardware network interface

Question 14

/etc/hosts

Answer 14

contains a mapping of IP addresses to URLs**

Question 15

host command

Answer 15

Used to find the IP address of a particular domain name or the domain name of a particular IP address.