A SCADA system integrator is selecting a protocol for a new wind farm. The protocol must support both reliable file transfer for firmware updates and low-latency telemetry. The integrator is considering using a single protocol. What is the best approach?

Use a proprietary protocol that combines both.

Use only UDP for both file transfer and telemetry.

Use only TCP for both file transfer and telemetry.

Use TCP for file transfer and UDP for telemetry.

A control system uses a protocol that is defined by RFC 1234 (hypothetical). The engineer finds that RFC 1234 has been obsoleted by RFC 5678, which is now a Draft Standard. The vendor's current firmware still implements RFC 1234. The engineer is updating the system's security documentation. What should the engineer document as the current authoritative specification?

The vendor's manual, because it reflects the actual implementation.

RFC 1234, because the vendor firmware uses it.

RFC 5678, because it obsoletes RFC 1234 and is the current specification.

Both RFC 1234 and RFC 5678, because they are both valid.

A network engineer is evaluating a new protocol for use in a SCADA DMZ. The protocol is currently published as an Internet-Draft. What is the protocol's official status?

It is not a standard; it is a preliminary document.

EC-CouncilICS/SCADA Cybersecurity

Domain 2Objective 2

Internet RFCs and STDs 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 38 practice questions to prepare you well beyond it. (estimate)

38questions here

8free pages

5concepts

Questions 1–5

1foundation · easy
A network administrator needs to configure a firewall to allow DNS queries from an ICS network to an external DNS server. Which RFC defines the DNS protocol and its message format?
Select an answer first
2expert · hard
A SCADA system integrator is selecting a protocol for a new wind farm. The protocol must support both reliable file transfer for firmware updates and low-latency telemetry. The integrator is considering using a single protocol. What is the best approach?
Select an answer first
3application · medium
An engineer is troubleshooting a connectivity issue between two ICS devices. The devices are on different subnets and communicate using IP. The engineer suspects a routing problem. Which RFC defines the IP protocol that the engineer should review?
Select an answer first
4expert · hard
A control system uses a protocol that is defined by RFC 1234 (hypothetical). The engineer finds that RFC 1234 has been obsoleted by RFC 5678, which is now a Draft Standard. The vendor's current firmware still implements RFC 1234. The engineer is updating the system's security documentation. What should the engineer document as the current authoritative specification?
Select an answer first
5application · medium
A network engineer is evaluating a new protocol for use in a SCADA DMZ. The protocol is currently published as an Internet-Draft. What is the protocol's official status?
Select an answer first

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Internet RFCs and STDs ICSSCADA Practice Questions (Page 1)

Questions 1–5

A network administrator needs to configure a firewall to allow DNS queries from an ICS network to an external DNS server. Which RFC defines the DNS protocol and its message format?

A SCADA system integrator is selecting a protocol for a new wind farm. The protocol must support both reliable file transfer for firmware updates and low-latency telemetry. The integrator is considering using a single protocol. What is the best approach?

An engineer is troubleshooting a connectivity issue between two ICS devices. The devices are on different subnets and communicate using IP. The engineer suspects a routing problem. Which RFC defines the IP protocol that the engineer should review?

A network engineer is evaluating a new protocol for use in a SCADA DMZ. The protocol is currently published as an Internet-Draft. What is the protocol's official status?

Keep studying — TCP/IP and ICS/SCADA Protocols