FUNDAMENTALS OF COMPUTER

COMPUTER THREATS SECURITY

TYPES OF NETWORK SECURITY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What type of firewall do you use to block access to certain websites or instant messengers?
A
Internet content filter
B
NIDS
C
circuit-level gateway
D
NATfiltering
Explanation: 

Detailed explanation-1: -D. filter, is usually applied as software at the Application layer and can filter out various types of Internet activities, such as access to certain websites, email, instant messaging, and so on.

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