1linux init: runlevel for multi user mode (traditionally no networking),2,linux_init
 2linux init: runlevel for extended multi user mode (networking and services started),3,linux_init
 3# linux netwokring: ,netstat,nix_networking
 4# linux networking: ,whois,nix_networking
 5# linux networking: ,iwconfig,nix_networking
 6# linux networking: ,route,nix_networking
 7# linux networking: ,arp,nix_networking
 8# linux networking: ,hostname,nix_networking
 9# linux networking: ,iptables,nix_networking
10# linux networking: /etc/network/interfaces,,linux_networking
11# linux networking: route -n ,,linux_networking
12# linux networking: ,ifconfig,nix_networking
13# linux networking: netstat -r,,linux_networking
14# linux networking: netstat -n,,linux_networking
15# linux networking: netstat -t,,linux_networking
16# linux networking: netstat -u,,linux_networking
17# linux networking: ip addr,,linux_networking
18# linux networking: ip link,,linux_networking
19# linux networking: ip -s,,linux_networking
20# linux networking: ip route,,linux_networking
21# linux networking: ,ping,linux_networking
22# linux networking: ,host,linux_networking
23# linux networking: ,dig,linux_networking
24# linux networking: ,nslookup,linux_networking
25# linux networking: ,traceroute,linux_networking
26# linux networking: ,tracepath,linux_networking
27# linux networking: ,tcptrace,linux_networking
28# linux networking: ,ss,linux_networking
29# linux networking: ss -,l,linux_networking
30# linux networking: ss -,t,linux_networking
31# linux networking: ss -,n,linux_networking
32# linux networking: ss -,p,linux_networking
33# linux networking: dhclient,,linux_networking
34# linux networking: /proc/sys/net/ipv4/ip_forward,0,linux_networking
35# linux networking: /proc/sys/net/ipv4/ip_forward,1,linux_networking
36# linux networking: losf,,linux_networking
37# linux networking: lsof,,linux_networking
38# linux networking: losf,,linux_networking
39what is the length of an ethernet header: ? bytes,14,networking
40what is the lenght of an IPv4 header without options: ? bytes,20,networking
41what is the lenght of an TCP header without options: ? bytes,20,networking
42which flag limits the number of ICMP packets: (unix) ping -[?] 1,c,unix_networking
43which flag specifies the size of the ICMP packets: (unix) ping -[?] 100,s,unix_networking
44which flag limits the number of ICMP packets: (win) ping -[?] 1,n,win_networking