Tcp/ip On Linux

Question 1

IP Networking requires

Answer 1

Ip address
Subnet mask
Broadcast address

Question 2

Ip address has two parts, which are

Answer 2

Network address (the part that talks about what network the device belongs to

Host address, which tells what host the is

Question 3

Address Class

Answer 3

A. 1-> 127
B. 128 -> 191.255
C. 192.0.0 -> end

Question 4

Subnet masks in classes are

Answer 4

A. 255.0.0.0
B. 255.255.0.0
C. 255.255.255.0

Question 5

Determine your ip address

Answer 5

ip address

Question 6

ifconfig

Answer 6

shows IP addresses in use

Question 7

host

Answer 7

Device with an ip address

Question 8

Hostname

Answer 8

An alias for an IP adsress

Question 9

FQDN (fully qualified domain name

Answer 9

Full domain name

Question 10

TLD top level domain name

Answer 10

.com .net, ect

Question 11

Domains

Answer 11

To the left of the TLD

Question 12

Subdomain

Answer 12

To the left of the domain

Question 13

hostname cmd

Answer 13

Prints the hostname. hostname -f prints the FQd

Question 14

To change the hostname entirely

Answer 14

change host config

Question 15

Host/dig

Answer 15

Use to resolve dns

Question 16

port

Answer 16

For sepcific services to send and receive data

Question 17

Ports 1-1023

Answer 17

Preassigned ports

Question 18

DHCP server

Answer 18

Used to map hosts to ip addresses

Question 19

ping

Answer 19

Used to test for connectivity to a host

Question 20

ping -c 3

Answer 20

Sends three pings

Question 21

traceroute

Answer 21

Tries to translate ip address to dns name
Also helps you determine speed of connection at different points

Question 22

netstat -n

Answer 22

Displays a numerical list of addresses and ports

Question 23

netstat -i

Answer 23

Displays a list of network interfaces

Question 24

netstat -r

Answer 24

Displays the route table

Question 25

Netstat -p

Answer 25

Displays the PID and program used

Question 26

netstat -l

Answer 26

Displays the listening socket

Question 27

netstat -t

Answer 27

Limit to tcp

Question 28

netstat -u

Answer 28

Limit the output to UDP

Question 29

tcpdump

Answer 29

Displays packet information
-n for numerical address and ports
-A for text output
-v for verbose mode
-vvv forvery verbose mode