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What does Nmap stand for in networking?
a. Network Mapping
b. Network Mapper
c. Neat Map
d. Node Mapping
Answer: b. Network Mappersanfoundry+2
Who is the original creator of Nmap?
a. Kevin Mitnick
b. Fyodor (Gordon Lyon)
c. Bruce Schneier
d. Linus Torvalds
Answer: b. Fyodor (Gordon Lyon)virtualcyberlabs
What is the primary use of Nmap?
a. Creating backups
b. Virus removal
c. Discovering hosts and services on a computer network
d. Wireless signal boosting
Answer: c. Discovering hosts and services on a computer networkstudocu+2
Which scan is the default and most popular scan option in Nmap for scanning ports quickly and unobtrusively?
a. TCP Connect
b. SYN scan
c. UDP scan
d. FIN scan
Answer: b. SYN scanstationx+2
Which of the following does Nmap NOT check?
a. Services different hosts are offering
b. On what OS they are running
c. What kind of firewall is in use
d. What type of antivirus is in use
Answer: d. What type of antivirus is in usesecurityscorecard+2
Which of these commands is used for a TCP Connect scan in Nmap?
a. nmap -sS
b. nmap -sT
c. nmap -sU
d. nmap -sF
Answer: b. nmap -sTwiz+1
What is host discovery in the context of Nmap?
a. Identifying open file systems
b. Determining live hosts on a network
c. Detecting viruses
d. Mapping website directories
Answer: b. Determining live hosts on a networkvirtualcyberlabs+1
What does the Nmap command ‘nmap -sU’ perform?
a. TCP Connect scan
b. SYN scan
c. UDP scan
d. IP protocol scan
Answer: c. UDP scanstationx+1
What does OS fingerprinting in Nmap refer to?
a. Scanning open files
b. Identifying remote operating system type and version
c. Mapping wireless networks
d. Checking WiFi passwords
Answer: b. Identifying remote operating system type and versionwiz+2
Which feature of Nmap allows automation and custom vulnerability detection?
a. NSE (Nmap Scripting Engine)
b. Firewall analyzer
c. OS updater
d. Network sniffer
Answer: a. NSE (Nmap Scripting Engine)securityscorecard+2
What does the command ‘nmap -sV’ do?
a. Ignores the firewall
b. Detects service versions
c. Finds routers
d. Encrypts data
Answer: b. Detects service versionsstationx+2
Which of the following best describes a “FIN scan” in Nmap?
a. Sends a SYN packet
b. Sends a FIN packet to a target port
c. Scans MAC addresses
d. Encrypts the scan
Answer: b. Sends a FIN packet to a target portwiz+1
What is the function of the ‘nmap -O’ option?
a. Output to a file
b. OS detection
c. Open all ports
d. Only scan UDP
Answer: b. OS detectionstationx+1
Which graphical Nmap frontend is recommended for visualization?
a. GNS3
b. Zenmap
c. Nping
d. Wireshark
Answer: b. Zenmapvirtualcyberlabs+1
Which of the following techniques is used by Nmap for host discovery?
a. ICMP echo request
b. SYN/ACK scanning
c. UDP “ping”
d. All of the above
Answer: d. All of the abovewiz
What is the purpose of ‘nmap -p 80,443’?
a. Scans all ports
b. Scans only ports 80 and 443
c. Disables port scanning
d. Updates service versions
Answer: b. Scans only ports 80 and 443stationx+1
What scan type would you use with ‘nmap -sX’?
a. Xmas scan
b. Version scan
c. OS scan
d. Connect scan
Answer: a. Xmas scanyeahhub+1
Which Nmap option only shows open ports during a scan?
a. -oG
b. –top-ports
c. –open
d. -sP
Answer: c. –openwiz+1
Which command enables aggressive scanning, including OS and version detection, script scanning, and traceroute?
a. nmap -A
b. nmap -O
c. nmap -sS
d. nmap -sA
Answer: a. nmap -Ainterviewbit+2
How does Nmap detect the operating system of a remote host?
a. Fingerprinting TCP/IP stack responses
b. Username enumeration
c. Firewall bypassing
d. ARP poisoning
Answer: a. Fingerprinting TCP/IP stack responsessecurityscorecard+2
What is the default timing template in Nmap?
a. -T0
b. -T3
c. -T5
d. -T1
Answer: b. -T3stationx
Which of the following is NOT a Nmap scan type?
a. XMAS scan
b. SYN scan
c. ARP scan
d. Ping storm
Answer: d. Ping stormvirtualcyberlabs+1
What does the ‘nmap –script’ option allow?
a. Script execution using NSE
b. Port forwarding
c. IP address spoofing
d. Encrypting packets
Answer: a. Script execution using NSEsecurityscorecard+1
Why would an administrator use a stealth scan?
a. To alert intrusion detection systems
b. To scan without completing TCP handshakes
c. To encrypt scan results
d. To increase scan noise
Answer: b. To scan without completing TCP handshakesvirtualcyberlabs+2
What does the -Pn option do in Nmap?
a. Enables ping
b. Disables host discovery (“no ping”)
c. Runs a NULL scan
d. Starts NSE engine
Answer: b. Disables host discovery (“no ping”)wiz+1
Which protocol can Nmap scan, besides TCP?
a. UDP
b. SMTP
c. FTP
d. ARP
Answer: a. UDPstationx+1
What does the ‘-oN’ option specify?
a. Output in normal format
b. Only scan new hosts
c. Output as network graph
d. None of the above
Answer: a. Output in normal formatwiz+1
What is Nmap’s role in vulnerability management?
a. Detecting vulnerabilities using scripts
b. Listing all users
c. Resetting passwords
d. Encrypting payloads
Answer: a. Detecting vulnerabilities using scriptssecurityscorecard+1
What does ‘nmap -6’ command do?
a. IPv4 scanning
b. Scans using IPv6
c. Six simultaneous scans
d. Ignores ports 6
Answer: b. Scans using IPv6stationx+1
Which output format does ‘-oX’ provide?
a. HTML
b. XML
c. CSV
d. TXT
Answer: b. XMLwiz+1
What does the -v option do in Nmap?
a. Increases verbosity
b. Views only open ports
c. Updates Nmap
d. Views only vulnerabilities
Answer: a. Increases verbositystationx+1
What is a Null scan?
a. All flags set
b. No flags set
c. FIN flag only
d. Only SYN flag set
Answer: b. No flags setvirtualcyberlabs+1
What is the purpose of the Nmap Scripting Engine (NSE)?
a. Automate tasks like vulnerability detection
b. Enhance graphics
c. Increase scan speed only
d. Bypass firewalls
Answer: a. Automate tasks like vulnerability detectionsecurityscorecard+2
What does the ‘nmap -F’ command perform?
a. Fast scan on fewer ports
b. Full scan
c. Firewall scan
d. Fragmented scan
Answer: a. Fast scan on fewer portsstationx
Which is a valid reason for using port scanning in networking?
a. Identifying open services for management
b. Encrypting the network
c. Download speeds measuring
d. Patch deployment
Answer: a. Identifying open services for managementsecurityscorecard+1
Which scan can help avoid Intrusion Detection Systems (IDS)?
a. NULL, FIN, and XMAS scans
b. Connect scan
c. Version scan
d. Aggressive scan
Answer: a. NULL, FIN, and XMAS scansvirtualcyberlabs+2
Which command would you use for a ping scan only?
a. nmap -sP
b. nmap -sT
c. nmap -sU
d. nmap -sV
Answer: a. nmap -sPstationx
What option is used in Nmap for outputting results in grepable format?
a. -oA
b. -oG
c. -oX
d. -oN
Answer: b. -oGwiz+1
Which of the following Nmap command scans for the top 100 most common ports?
a. nmap –top-ports 100
b. nmap -F
c. nmap -A
d. nmap -sT
Answer: a. nmap –top-ports 100wiz+1
Which Nmap scan is useful for discovering firewall rules?
a. ACK scan
b. UDP scan
c. Null scan
d. Connect scan
Answer: a. ACK scanstationx
What does Nmap use to identify running services?
a. Signature matching
b. Port enumeration
c. Time analysis
d. OS fingerprinting
Answer: a. Signature matchingsecurityscorecard+1
Which version of Nmap introduced NSE (Nmap Scripting Engine)?
a. 1.0
b. 2.5
c. 4.0
d. 5.0
Answer: c. 4.0securityscorecard+1
Which of the following best describes a decoy scan?
a. Uses fake source addresses
b. Only scans UDP
c. Password brute-force
d. Disables reporting
Answer: a. Uses fake source addresseswiz+1
What does ‘nmap -A -T4’ command do?
a. Aggressive scan with high speed
b. Only fast scan
c. Output in XML
d. Top 4 ports scan
Answer: a. Aggressive scan with high speedwiz+1
Which flag does a SYN scan send to start the connection?
a. SYN
b. FIN
c. ACK
d. RST
Answer: a. SYNyeahhub+1
Which output format is best for parsing by other applications?
a. -oX (XML)
b. -oN (Normal)
c. -oG (Grepable)
d. -oA (All formats)
Answer: a. -oX (XML)stationx+1
Which scan technique attempts a complete three-way handshake with the target?
a. SYN scan
b. Connect scan
c. FIN scan
d. UDP scan
Answer: b. Connect scanwiz+1
Which of the following commands can show the Nmap version installed?
a. nmap -V
b. nmap -v
c. nmap –add
d. nmap –version
Answer: d. nmap –versionstationx
Which option sets a custom source port in Nmap?
a. –source-port
b. -sP
c. -pS
d. -sp
Answer: a. –source-portstationx
What is the main security concern when using aggressive scan settings?
a. Scans can be easily detected
b. Slower network performance
c. Port enumeration errors
d. Output only in XML
Answer: a. Scans can be easily detectedvirtualcyberlabs+2

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