An ICS network is being migrated from IPv4 to IPv6 to support a large number of sensors. Which statement about IPv6 addressing is correct in this context?

IPv6 addresses are 32 bits, same as IPv4, but with a different format.

IPv6 addresses are 128 bits, providing a vastly larger address space than IPv4.

IPv6 uses broadcast addresses to communicate with all devices on a subnet.

IPv6 does not support subnetting; each device gets a globally unique address.

Which application scenario is best suited for UDP instead of TCP?

Transferring a bank transaction

Sending a real-time video stream

Downloading a large software update

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EC-CouncilICS/SCADA Cybersecurity

Domain 2Objective 3

TCP/IP Protocol Architecture ICSSCADA Practice Questions (Page 1)

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 39 practice questions to prepare you well beyond it. (estimate)

39questions here

8free pages

7concepts

Questions 1–5

1application · medium
A water treatment facility uses a SCADA network with a mix of legacy PLCs and modern HMIs. The network engineer needs to add a new remote I/O module that must communicate with the PLC over a TCP/IP link. The module only supports IPv4 and the existing subnet is 192.168.10.0/24. The engineer must assign an address that is routable within the plant and does not conflict with the DHCP scope (192.168.10.100–192.168.10.200). Which address should be assigned?
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2application · easy
An ICS network is being migrated from IPv4 to IPv6 to support a large number of sensors. Which statement about IPv6 addressing is correct in this context?
Select an answer first
3foundation · easy
Which application scenario is best suited for UDP instead of TCP?
Select an answer first
4application · medium
A technician is troubleshooting a connectivity issue between two PLCs on the same Ethernet switch. The PLCs have IP addresses in the same subnet, but they cannot communicate. Which protocol should the technician check first to ensure the IP-to-MAC mapping is correct?
Select an answer first
5application · easy
A control system vendor requires a dedicated /30 subnet for a redundant pair of PLCs that communicate directly with each other. How many usable IP addresses does this subnet provide for the PLCs?
Select an answer first

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TCP/IP Protocol Architecture ICSSCADA Practice Questions (Page 1)

Questions 1–5

An ICS network is being migrated from IPv4 to IPv6 to support a large number of sensors. Which statement about IPv6 addressing is correct in this context?

Which application scenario is best suited for UDP instead of TCP?

A technician is troubleshooting a connectivity issue between two PLCs on the same Ethernet switch. The PLCs have IP addresses in the same subnet, but they cannot communicate. Which protocol should the technician check first to ensure the IP-to-MAC mapping is correct?

A control system vendor requires a dedicated /30 subnet for a redundant pair of PLCs that communicate directly with each other. How many usable IP addresses does this subnet provide for the PLCs?

Keep studying — TCP/IP and ICS/SCADA Protocols