Which of the following is the best method to stop vulnerability attacks on a Web server?

A.
Using strong passwords

B.
Configuring a firewall

C.
Implementing the latest virus scanner

D.
Installing service packs and updates

Explanation:
A vulnerability attack takes advantage of the vulnerabilities in an operating system or software
service by entering the operating system and disrupting its working. The best way to counter such
attacks is to keep the operating system updated with latest service packs and updates.
Answer option B is incorrect. Configuring a firewall is helpful in Denial-of-Service attacks.
Answer option A is incorrect. Using strong passwords is helpful in countering brute force attacks.
Answer option C is incorrect. Virus scanners are used to protect computers from viruses. They do not
help protect computers from attacks.