What is the primary function of a router in an IP network?

To connect devices within the same local network

To provide wireless connectivity to devices

To translate domain names to IP addresses

To forward packets between different networks based on IP addresses

A router in the OT network is receiving packets for a destination that is not in its routing table. The router has a default route configured. What will the router do with these packets?

Send an ARP request to all hosts on the local network to find the destination.

Drop the packets and send an ICMP destination unreachable message to the source.

Broadcast the packets to all interfaces to find the destination.

Forward the packets to the next hop specified by the default route.

A remote vendor needs to access an engineering workstation inside the OT network. The workstation has a private IP address, and the vendor must connect from the internet. The security team wants to avoid exposing the workstation directly. Which approach should you implement?

Place the workstation on a public subnet and assign it a public IP address so the vendor can connect directly.

Configure a one-to-one NAT mapping on the edge firewall so the vendor can reach the workstation's private IP via a public address.

Use a port-forwarding rule that sends all traffic on the firewall's public IP to the workstation's private IP on all ports.

Disable NAT on the edge firewall and rely on the routing table to route the vendor's traffic to the workstation.

EC-CouncilICS/SCADA Cybersecurity

Domain 2Objective 1

Introducing TCP/IP Networks ICSSCADA Practice Questions (Page 3)

Part of the TCP/IP and ICS/SCADA Protocols domain, which makes up ~13% of our current practice bank. EC-Council does not publish an official question count, but from its 120-minute exam (~50–80 total, ~7–10 in this domain), expect 1–2 from this objective — we provide 43 practice questions to prepare you well beyond it. (estimate)

43questions here

9free pages

10concepts

Questions 11–15

11foundation · easy
What is the primary function of a router in an IP network?
Select an answer first
12foundation · easy
Which type of NAT maps a single private IP address to a single public IP address?
Select an answer first
13expert · medium
A router in the OT network is receiving packets for a destination that is not in its routing table. The router has a default route configured. What will the router do with these packets?
Select an answer first
14application · medium
A remote vendor needs to access an engineering workstation inside the OT network. The workstation has a private IP address, and the vendor must connect from the internet. The security team wants to avoid exposing the workstation directly. Which approach should you implement?
Select an answer first
15foundation · easy
Which protocol is used to send error messages and operational information in IP networks?
Select an answer first

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Introducing TCP/IP Networks ICSSCADA Practice Questions (Page 3)

Questions 11–15

What is the primary function of a router in an IP network?

Which type of NAT maps a single private IP address to a single public IP address?

A router in the OT network is receiving packets for a destination that is not in its routing table. The router has a default route configured. What will the router do with these packets?

A remote vendor needs to access an engineering workstation inside the OT network. The workstation has a private IP address, and the vendor must connect from the internet. The security team wants to avoid exposing the workstation directly. Which approach should you implement?

Which protocol is used to send error messages and operational information in IP networks?

Keep studying — TCP/IP and ICS/SCADA Protocols