See the explanation below
In Order to deactivate web services, database services and print service, we can do following things
1) deactivate its services
/etc/init.d/apache2 stop
/etc/init.d/mysqld stop
2) close ports for these services
Web Server
iptables -I INPUT -p tcp -m tcp --dport 443 -j REJECTservice iptables save Print Server iptables -I INPUT -p tcp -m tcp --dport 631 -j REJECTservice iptables save Database Server iptables -I INPUT -p tcp -m tcp --dport <<port umber>> -j REJECTservice iptables save
3) Kill the process any running for the same
ps -aef|grep mysql
kill -9 <<process id>>

The annualized loss expectancy (ALE) is the product of the annual rate of occurrence (ARO) and the single loss expectancy (SLE). It is mathematically expressed as: ALE = ARO x SLE Single Loss Expectancy (SLE) is mathematically expressed as: Asset value (AV) x Exposure Factor (EF) Thus if SLE = $ 24,000 and EF = 25% then the Asset value is SLE/EF = $ 96,000

A Code review refers to the examination of an application (the new network based software product in this case) that is designed to identify and assess threats to the organization.
White box testing assumes that the penetration test team has full knowledge of the network and the infrastructure per se thus rendering the testing to follow a more structured approach.
Incorrect Answers:
B: Penetration testing is a broad term to refer to all the different types of tests such as back box-, white box and gray box testing.
C: Grey Box testing is similar to white box testing, but not as insightful.
D: Code signing is the term used to refer to the process of digitally signing executables and scripts to confirm the author. This is not applicable in this case.
References:
Gregg, Michael, and Billy Haines, CASP CompTIA Advanced Security Practitioner Study Guide, John Wiley & Sons, Indianapolis, 2012, pp. 18, 168-169

Explanation
The payroll system is not meeting security policy due to missing OS security patches. We cannot apply the patches to the system because the vendor states that the system is only supported on the current OS patch level. Therefore, we need another way of securing the system.
We can improve the security of the system and the other systems on the network by isolating the payroll system on a secure network to limit its contact with other systems. This will reduce the likelihood of a malicious user accessing the payroll system and limit any damage to other systems if the payroll system is attacked.