Exam 312-50v10 topic 1 question 71 discussion

-F (Fast (limited port) scan) Specifies that you wish to scan fewer ports than the default. Normally Nmap scans the most common 1,000 ports for each scanned protocol. With -F, this is reduced to 100. -r (Don't randomize ports) By default, Nmap randomizes the scanned port order (except that certain commonly accessible ports are moved near the beginning for efficiency reasons). This randomization is normally desirable, but you can specify -r for sequential (sorted from lowest to highest) port scanning instead.

The best Nmap command to quickly enumerate all machines in the same network, given that the compromised server has an IP address of 10.10.0.5, is option A: nmap -T4 -q 10.10.0.0/24. Explanation: The "-T4" option sets the timing template to aggressive, which speeds up the scanning process. The "-q" option makes the scan quiet and reduces the amount of output, making the enumeration faster. "10.10.0.0/24" specifies the target network range to scan. The "/24" represents a CIDR notation for a subnet mask of 255.255.255.0, indicating that all IP addresses within the range 10.10.0.1 to 10.10.0.254 will be scanned.

-T0 nmap 192.168.1.1 -T0 Paranoid (0) Intrusion Detection System evasion -T1 nmap 192.168.1.1 -T1 Sneaky (1) Intrusion Detection System evasion -T2 nmap 192.168.1.1 -T2 Polite (2) slows down the scan to use less bandwidth and use less target machine resources -T3 nmap 192.168.1.1 -T3 Normal (3) which is default speed -T4 nmap 192.168.1.1 -T4 Aggressive (4) speeds scans; assumes you are on a reasonably fast and reliable network -T5 nmap 192.168.1.1 -T5 Insane (5) speeds scan; assumes you are on an extraordinarily fast network