Attackers frequently use ACK scans to circumvent a firewall or other filtering tools. During a NULL scan, all packet flags are enabled. The most recent versions of Nessus Server and Client are compatible with Windows, Mac OS X, FreeBSD, and the vast majority of Linux variants.
<h3>What is ack scan ?</h3>
- ACK scans are used to identify hosts or ports that have been blocked or are resistant to other types of scanning. An attacker uses TCP ACK segments to learn about firewall or ACL configuration. 
- Attackers probe our router or send unsolicited SYN, ACK, and FIN requests to specific UDP/TCP ports.
- TCP ACK Scan sends an ACK message to the target port to determine whether or not it is filtered.
- On unfiltered ports, a RST reply packet will be sent for both open and closed ports. Filtered ports will either generate no response or generate an ICMP reply packet with an unreachable destination.
- The TCP ACK scanning technique attempts to determine whether a port is filtered by using packets with the ACK flag set.
To learn more about ask scan refer to:
brainly.com/question/13055134
#SPJ4
 
        
             
        
        
        
The program is
num = int(input("Enter Numerator "))
den = int(input("Enter Denominator "))
print("quotient is ",str(num//den)," remainder is ", str(num%den))
<h3>
How to create a division sign in HTML?</h3>
To create a division sign ( ÷ ) in HTML you can use any of the following codes.
÷
÷
÷
<h3>
How to divide in computer programming?</h3>
Perl code
use strict;
my $first = 15;
my $second = 5;
my $answer = $first / $second;
print "You get $answer if you divide $first by $second";
When the script above is run, it displays "You get 3 if you divide 15 by 5" on the screen.
To learn more about programming, refer
https://brainly.ph/question/4743
#SPJ4
 
        
             
        
        
        
Fist one correct.
second wrong because not all heat is used for work, some of it lost to other.
third wrong because fuel burn inside is called combustion engine
 <span />
        
                    
             
        
        
        
Answer:
a. The cell tower forwards the call to the wireless provider's Mobile Telephone Switching Office
Explanation:
When a cell phone user begins to make a call, it is picked up by the cell tower located in the cell in which the cell phone is located and that belongs to the user's wireless provider. The next step in this process is that the cell tower forwards the call to the wireless provider's Mobile Telephone Switching Office. 
 
        
             
        
        
        
I guess the correct answer is plant system pathway
Thе plant systеms pathway includеs οccupatiοns rеlatеd tο grοwing fοοd, fееd, and fibеr crοps, and thе study οf plantsand thеir grοwth tο hеlp prοducеrs mееt cοnsumеr dеmand whilе cοnsеrving natural rеsοurcеs and maintaining thе еnvirοnmеnt.
In his work for a new company, Byron found a flower material that he could use to manufacture dresses. In his career, Byron is most likely focused on the plant system pathway.