In the DNS hierarchical system, there are $q,$

a$.21$ root servers located around the world that provide name resolution

b$.15$

c$.13$

d$.9$

QUESTION $5$

What are the two types of SQL Injection Attacks?

a$.$ Web Form

b$.$ Query String Attacks

c$.$ Apache

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Which of following attack methods target Web and e$-$mail users?

a$.$ Social engineering

b$.$ Phishing

c$.$ Whaling

d$.$ Pharming