Network Tools and Commands

Question 1

Wireless Analyzer

Answer 1

Ensures you have the proper coverage and helps prevent overlap
between wireless access point coverage zones and channels

Question 2

Protocol Analyzer

Answer 2

Used to capture and analyze signals and data traffic over a

communication channel

Question 3

Packet Capturing Tool

Answer 3

Used to capture packets running over a network connection in real time
and then save them for later analysis
tcpdump, solarwinds, …

Question 4

Bandwidth Speed Test

Answer 4

Verifies the real-world throughput from a client device all the way out to
the Internet and back

Question 5

Port Scanner

Answer 5

Determines which ports are open on a network

Question 6

iPerf

Answer 6

Gathers an active measurement of the maximum achievable bandwidth
on an IP-based network

Question 7

NetFlow Analyzer

Answer 7

Performs monitoring, troubleshooting and in-depth inspection,
interpretation, and synthesis of traffic flow data

Question 8

(TFTP)

Answer 8

Trivial File Transfer Protocol (TFTP)

Protocol for exchanging files between two TCP/IP machines

Question 9

TFTP Server

Answer 9

Used for simple file transfers on a network and boot-loading of remote
devices

Question 10

Terminal Emulator

Answer 10

▪ Allows a host computer to access another computer through a command-
line interface or a graphical one using either Telnet or SSH
▪ Always use SSH instead of Telnet

Question 11

IP Scanner

Answer 11

Used to search for and detect IP addresses and other information related
to devices on the network

Question 12

Ping

Answer 12

▪ Used to check IP connectivity between two devices, most often for
network troubleshooting
▪ Similar to Windows version, except it runs forever by default (like –t in
Windows)

Question 13

Traceroute/ Tracert

Answer 13

Displays the path between your device (the source) and the destination
IP address, showing each route hop along the path

Question 14

Hop

Answer 14

Any router or firewall that is in the path of the transmission from the
client to the destination
● If cannot ping google.com
o ping 8.8.8.8
● If cannot ping 8.8.8.8
o ping default gateway
● If cannot ping default gateway
o ping local client’s IP address
● If cannot ping local IP address
o ping local host of 127.0.0.1

Question 15

IP Configuration (ipconfig)

Answer 15

Displays all of the current TCP/IP network configuration values and
refreshes DHCP and DNS settings for a Windows client/server

Question 16

Interface Configuration (ifconfig)

Answer 16

▪ Command line tool used in Unix, Linux, and OS X systems to display IP
address information
▪ ifconfig is considered officially deprecated

Question 17

ip

Answer 17

Assigns an address to a network interface or configures network interface
parameters on a Unix, Linux, or OS X operating system

Question 18

Name Server Lookup (nslookup)

Answer 18

▪ Used to query the DNS to provide the mapping between domain names
and IP addresses or other DNS records
▪ In Windows, use set q=mx to search for mail exchange records
▪ In Linux, use set type=mx to search for mail exchange records

Question 19

dig

Answer 19

Used to conduct queries against DNS nameservers and is only available
for Linux, Unix, and OS X systems by default

Question 20

hostname

Answer 20

Used to display the hostname portion of the full computer name for a
given system

Question 21

Address Resolution Protocol (arp)

Answer 21

▪ Used to display and modify entries in the Address Resolution Protocol (or
ARP) cache on a system
▪ An ARP entry in the cache will get deleted after 21,600 seconds (6 hours)
● arp -d

Question 22

route

Answer 22

Used to view and manipulate the IP routing table in a Windows, Linux,
Unix, or OS X system

Question 23

Default Route

Answer 23

Route that takes effect when no other route is available for an IP
destination address

Question 24

nbtstat

Answer 24

Used to view the current connections and statistics for devices
communicating using the NetBIOS over TCP/IP protocol

Question 25

Network Statistics (netstat)

Answer 25

Displays information for IP-based connections on a client including its
current sessions, its source and destination IPs, and port numbers

Question 26

telnet

Answer 26

Provides a bidirectional interactive text-oriented communication facility
using a virtual terminal connection

Question 27

tcpdump

Answer 27

Allows for the display of TCP/IP and other packets being transmitted or
received over a network to the client’s screen

Question 28

Network Mapper (nmap)

Answer 28

Discovers hosts and services on a computer network by sending packets
and analyzing the responses

Question 29

Network Platform

Answer 29

Refers to any router, switch, or firewall, regardless of the brand or
manufacturer

Question 30

show interface

Answer 30

Displays statistics for the network interfaces on the device

Question 31

show config

Answer 31

Displays the current system configuration on the screen

Question 32

show route

Answer 32

Displays the current state of the routing table on the device