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NAT (Network Address Translation) is used because (choose two) a. So that untrus

ID: 452799 • Letter: N

Question

NAT (Network Address Translation) is used because (choose two) a. So that untrusted segments cannot discover device IPs within the network b. There needs to be a translation between a host name and an IP c. There are more devices in the world than available IPs d. Network traffic needs to be routed out of the firewall 2. A system log would be utilized as a a. Physical control b. Detective control c. Preventive control d. Log control 3. A firewall is what type of control? a. Soft control b. Technical c. Physical d. Administrative 4. A company needs to implement a surveillance system that will monitor a large area outside the facility. What type of control is this? a. Preventive b. Physical c. Technical d. Administrative 5. A recommended practice to insure obscurity of a Firewall would be to deny ICMP data a. True b. False

Explanation / Answer

Q.1. Ans - a. So that untrusted segments cannot discover device IPs within the network. d. Network traffic needs to be routed out of the firewall.

Explanation: - When NAT is used, all users inside the private network access the Internet have the same public IP address when they use the Internet. That means only one public addresses is needed for hundreds or even thousands of users. NAT operates on a router, usually connecting two networks together, and translates the private (not globally unique) addresses in the internal network into legal addresses, before packets are forwarded to another network. So that untrusted segments cannot discover device IPs within the network.

Q.2. Ans - b. Detective control

Explanation: - Log analysis involves examining a record of events to discover anomalies. Thus, system log is a detective control.

Q.3. Ans - b. Technical

Explanation: - A firewall is a technical control as it is a system and software control.

Q.4. Ans - a. Preventive

Explanation: - Preventative controls exist to prevent the threat from coming in contact with the weakness. A company needs to implement a surveillance system that will monitor a large area outside the facility. This is a preventive type of control as it prevents the loss or harm from occurring.