Section 22: Network Tools and Commands

Question 1

What is a WiFi Analyzer?

Answer 1

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

Question 2

What is a Protocol Analyzer?

Answer 2

Used to capture and analyze signals and data traffic over a communication channel

Question 3

What is a Packet Capturing Tool?

Answer 3

Used to capture packets running over a network connection in real time and then save them for a later analysis.

Question 4

What is a 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

What is a Port Scanner?

Answer 5

Determines which ports are open on a network

Question 6

What does iperf do?

Answer 6

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

Question 7

What is a NetFlow Analyzer?

Answer 7

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

Question 8

What is a Trivial File Transfer Protocol (TFTP) Server?

Answer 8

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

Question 9

What is a Terminal Emulator?

Answer 9

Allows a host computer to access another computer through a command-line interface or a graphical one using either Telnet or SSH

Question 10

What is an IP Scanner?

Answer 10

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

Question 11

What is ping used for?

Answer 11

Used to check IP connectivity between two devices

Question 12

What does Traceroute/Tracert do?

Answer 12

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

Question 13

What does ipconfig do?

Answer 13

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

Question 14

What is ifconfig?

Answer 14

Command line tool used in Unix, Linux, OS X systems to display IP address information

Question 15

What does ip do?

Answer 15

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

Question 16

What is nslookup (Name Server Lookup) used for?

Answer 16

Used to query the DNS to provide the mapping between domain names and IP addresses or other DNS records

Question 17

What is dig used for?

Answer 17

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

Question 18

What is hostname used for?

Answer 18

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

Question 19

What is arp used for?

Answer 19

Used to display and modify entries in the Address Resolution Protocol (ARP) cache on a system

Question 20

What is route used for?

Answer 20

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

Question 21

What is netstat?

Answer 21

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

Question 22

What does telnet do?

Answer 22

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

Question 23

What is tcpdump?

Answer 23

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

Question 24

What does nmap do?

Answer 24

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

Question 25

What does show interface do?

Answer 25

A Cisco command that displays statistics for the network interfaces on the device

Question 26

What does show config do?

Answer 26

A Cisco command that displays the current system configuration on the screen

Question 27

What does show route do?

Answer 27

A Cisco command that displays the current state of the routing table on the device