CompTIA Network+ N10-009 Networking Ports and Protocols Exercise 2 - Network Port Scan

Question 1

nmap

Answer 1

Nmap is an open-source network scanning tool used for locating hosts and services on a network.

Question 2

how does nmap work

Answer 2

When conducting a default scan with nmap, a TCP SYN scan on the 1,000 most common TCP ports is performed. To do this, nmap sends TCP SYN packets to the target ports and analyzes the responses to determine their status, whether open, closed, or filtered.

Question 3

nslookup

Answer 3

nslookup acidc01 - quires DNS servers. Sends a DNS query to the DNS server to retreive info about hostname

Question 4

How to lookup protocol DNS in Wireshark

Answer 4

after running a command, type in DNS in the search field.

Question 5

name four network interfaces wireshark allows you to connect to

Answer 5

ethernet, ethernet 2, wifi, virtual interfaces

Question 6

nmap command

Answer 6

nmap 912.168.0.0/24

Question 7

what does ping do

Answer 7

sends ICMP echo request packet. then listens to reply which determins round trip time and status of connection. for pings by default.