Firewall and Network Traffic Filtering Quiz

What is a primary prevention technique for controlling vandalism over network connections?

Encrypting all outgoing messages
Installing a firewall at the gateway (correct)
Updating antivirus software
Blocking all incoming messages

How does a firewall help terminate a denial of service attack?

By allowing all traffic without filtering
By encrypting all outgoing messages
By blocking traffic from attacking computers (correct)
By rerouting the attack to a different server

What is the purpose of blocking all incoming messages with origin addresses within the region accessed through the gateway?

To prevent outsiders from pretending to be inside region members (correct)
To speed up network connections
To allow for easier data transfer
To identify potential sources of trouble

When should a firewall be installed on an individual computer?

When the computer is not serving as a web server, name server, or email server (D) Signup and view all the answers

What is one method an intruder might use to gain entry to a computer?

Establishing a clandestine server on the infected computer (B) Signup and view all the answers

What is the purpose of a firewall in the context of the text?

To block messages from malicious clients (A) Signup and view all the answers

What is one purpose of a proxy server mentioned in the text?

To shield the client from adverse actions of the server (A) Signup and view all the answers

How do spam filters distinguish between desirable email and spam?

By engaging in a training process with the user (B) Signup and view all the answers

What advantage does a proxy server offer in terms of client-server communication?

It prevents the actual server from knowing the true client's identity (A) Signup and view all the answers

How are malicious clients prevented from retrieving spyware findings, as mentioned in the text?

By properly installing a firewall (C) Signup and view all the answers

Why might a firewall be installed at the gateway of an organization's intranet?

To filter messages passing in and out of the region (B) Signup and view all the answers

What role do firewalls play in preventing spoofing attacks?

Blocking incoming traffic pretending to be from inside the organization (C) Signup and view all the answers

In what scenario should a firewall be installed on an individual computer?

When the computer is not used for specific server applications (B) Signup and view all the answers

How does a firewall assist in terminating denial of service attacks?

By blocking traffic from attacking computers (A) Signup and view all the answers

What is the primary function of a firewall in the context of spyware retrieval prevention?

Blocking messages from malicious clients (C) Signup and view all the answers

How do spam filters typically distinguish between desirable email and spam?

By using training processes based on user identification of spam (C) Signup and view all the answers

What is the primary advantage of using a proxy server in client-server communication?

Filtering messages sent between the client and server (C) Signup and view all the answers

How does a proxy server act as an intermediary in client-server communication?

It relays messages back and forth between client and server (D) Signup and view all the answers

Why is it important to shield the client from adverse actions of the server in client-server communication?

To prevent malicious activity based on collected information (B) Signup and view all the answers

What is a key purpose of using spam filters in email management?

To learn and make decisions independently on email classification (D) Signup and view all the answers