OBJ 5.3 X

Question 1

WiFi 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/packet capture

Answer 2

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

Packet capturing tool - Used to capture packets running over a network connection in real time
and then save them for later analysis

Question 3

Bandwidth speed tester

Answer 3

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

Question 4

Port scanner

Answer 4

Determines which ports are open on a network

Question 5

iperf

Answer 5

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

Question 6

NetFlow analyzers

Answer 6

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

Question 7

Trivial File Transfer
Protocol (TFTP) server

Answer 7

Protocol for exchanging files between two TCP/IP machines

Question 8

Terminal emulator

Answer 8

llows a host computer to access another computer through a commandline interface or a graphical one using either Telnet or SSH

Question 9

IP scanner

Answer 9

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

Question 10

ping

Answer 10

Used to check IP connectivity between two devices, most often for
network troubleshooting

Question 11

ipconfig/ifconfig/ip

Answer 11

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

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

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

Question 12

nslookup/dig

Answer 12

Name Server Lookup (nslookup)
▪ Used to query the DNS to provide the mapping between domain names and IP addresses or other DNS records

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

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

arp

Answer 14

▪ 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 15

netstat

Answer 15

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

Question 16

hostname

Answer 16

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

Question 17

route

Answer 17

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

Question 18

telnet

Answer 18

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

Question 19

tcpdump

Answer 19

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

Question 20

nmap

Answer 20

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

Question 21

show interface

Answer 21

Displays statistics for the network interfaces on the device

Question 22

show config

Answer 22

Displays the current system configuration on the screen

Question 23

show route

Answer 23

Displays the current state of the routing table on the device