Port Scanners

Question 1

What are the options of NMAP to control the timing of scanning speeds?

Answer 1

-T1 -T2 -T3 -T4 -T5

Question 2

This NMAP Parameter will commence a XMAS scan on a device

Answer 2

-sX

Question 3

This NMAP Parameter will export the scan results as an XML for external manipulation.

Answer 3

-oX

Question 4

Nmap’s default scan with admin privledges

-Pn
-sT
-sS
sU

Answer 4

-sS

Question 5

Nmap’s default scan with admin privledges

-Pn
-sT
-sS
sU

Answer 5

-sS

Question 6

Nmaps default scan with without admin privledges

-Pn
-sT
-sS
sU

Answer 6

-sT

Question 7

This NMAP Parameter will give more information on basic scans implemented

Answer 7

-v

Question 8

____ - This port state is the result of an active port with an application that is actively accepting TCP connections.

Answer 8

Open

Question 9

This NMAP Parameter will scan only the provided ports input

Answer 9

-p

Question 10

____ Is the result when it cannot determine whether the port is active because packet sorting stops connections from reaching the port. It could be the result of a dedicated firewall device, router, router rules or host-based firewall software.

Answer 10

Filtered

Question 11

Make an nmap scan for nonexist.org and Include more information:

Answer 11

nmap -v nonexist.org

Question 12

What flags are sent in a christmas scan?

SYN,SYN/ACK,PSH,ACK
FIN,PSH,URG
FIN,PSH,URG,SYN,SYN/ACK
FIN,SYN,SYN/ACK,PSH

Answer 12

FIN,PSH,URG

Question 13

This parameter with specified numbers will scan all ports

Answer 13

-p 0-65535

Question 14

What tool utilizes the command “ping scan”.

Answer 14

nmap

Question 15

What tool would utilize the command: nc -z -v site.com?

Answer 15

Netcat

Question 16

Port Scanning does what?

checks IP addresses
determines number of hops between routes
determines fastest route to delivery packets
to check which ports are open

Answer 16

to check which ports are open

Question 17

What tool is used to read and write data across network connections using TCP or UDP protocol?

Answer 17

NetCat/Cryptcat

Question 18

Which of the following tasks can NOT be done using Nmap?

Quickly recognize devices on a single or multiple networks
Monitor large networks
Transfer files across the network
Detects security risks

Answer 18

Transfer files across the network

Question 19

This NMAP parameter/option will assume every host in a network scan is online. Example: -sS

Answer 19

-Pn

Question 20

This NMAP Parameter will enable you to import a list of ip addresses or networks to scan

Answer 20

-iL

Question 21

Nmap scans how many ports by default if not specified?

500 ports
1000 ports
Top 1000 used ports
All well known ports

Answer 21

Top 1000 used ports

Question 22

When implementing nmap on a network its capabilities can include identifying ports, servers and active hosts within the network scope. What type of reconissiance is nmap classified to implement on a network?

Recursive
Active
Passive
Port-scanner

Answer 22

Active

Question 23

This NMAP parameter will enable OS detection

Answer 23

-O

Question 24

____ The result of a port that is active but has no application listening on it.

Answer 24

Closed

Question 25

Nmap has the capability to integrate scripts TRUE FALSE

Answer 25

TRUE

Question 26

____ Is the result when nmap can connect to a port but is unable to verify ports as active or deactivated

Answer 26

Unfiltered

Question 27

Create a nmap scan that will scan a 198.216.0.0/16 network for version information on services ssh,dns,pop3 and RDP

Answer 27

nmap -sV 198.216.0.0/16 -p 22,53,110,3367

Question 28

This Parameter will control the timing of scanning and takes the longest time to assist in avoiding detection.

Answer 28

-T0

Question 29

Nmap scans are a form of what type of reconnisance?

Answer 29

Active

Question 30

True or False: Nmap utilizes a graphical user interface known as Zmap that develops visual nc -l – This command will instruct mappings of a network for better usability and reporting. True False

Answer 30

False: Zenmap

Question 31

Which term correctly fills in the blank? ScanLine is a command-line port scanner for all ______ platforms. ChromeOS MacOS Windows Linux

Answer 31

Windows

Question 32

Which tool is used for vulnerability scanning and network discovery? Netcat Cisco Packet Tracer ZenMap Nmap

Answer 32

Nmap

Question 33

True or False: Netcat was designed to be a reliable front-end tool that can be used directly or easily driven by other programs and scripts. True False

Answer 33

False: Back-end

Question 34

CryptCat uses what encryption method? AES TwoFish DES ThreeFish

Answer 34

TwoFish

Question 35

True or False: In order to conduct port scanning you first need a list of what hosts are on the network along with the IP addresses. True False

Answer 35

True

Question 36

Which of the following are advantages to port scanning? Select all that apply: Finding open and vulnerable server locations Checking security settings Identifying hosts connected to the network and the services that are running on them All of the above

Answer 36

All of the Above

Question 37

This type of scanning is performed by sending an SYN packet and analyzing the response. What type of scan is this?

Answer 37

Syn Scan

Question 38

TwoFish encryption utilizes _____ and one ____ key. Symmetric encryption and uses one 128-bit key Symmetric encryption and uses one 256-bit key Asymmetric encryption and uses one 2048-bit key None of the above

Answer 38

Symmetric encryption and uses one 256-bit key

Question 39

Which of these is the simplest port scan? TCP Half Open Port Scan UDP Ping Scan None of the above

Answer 39

Ping Scan

Question 40

True or False: While port scanning is an incredibly useful tool for malicious actors to use during reconnaissance, it is not nearly as useful for IT admin staff. True False

Answer 40

False: Useful for both actors

Question 41

Which of these functions can be performed using ScanLine? ICMP TimeStamp Scanning TCP Scanning UDP Scanning All of the above

Answer 41

All of the above

Question 42

This command will do what function? nc -l This command will print a list of all of the available commands you can use in Netcat. This will run a basic port scan of the specified website or server. This command will instruct the local system to begin listening for TCP connections and UDP activity on a specific port number. None of the above

Answer 42

This command will instruct the local system to begin listening for TCP connections and UDP activity on a specific port number.

Question 43

True or False: A number of TCP protocol techniques actually make it possible for attackers to conceal their network location and use “decoy traffic” to perform port scans without revealing any network address to the target. True False

Answer 43

True

Question 44

# Fill in the blank: Ports 0 to _____ are well known port numbers that are designed for Internet use although they can have specialized purposes as well. 1023 65,536 1064 783

Answer 44

1023

Question 45

# Fill in the blank: Ports range from 0 to ______and basically rank by popularity. 1023 65,536 1064 783

Answer 45

65,536

Question 46

The range of ports mentioned in question 22 are administered by what organization? National Security Agency Defense Information Systems Agency Cybersecurity and Infrastructure Security Agency Internet Assigned Numbers Authority

Answer 46

Internet Assigned Numbers Authority

Question 47

2 Fill in the Blank: What are the general protocols used for port scanning? TCP, ICMP UDP, FTTP TCP, SMTP None of the Above

Answer 47

None of the Above: They are TCP and UDP