CompTIA Network+ N10-008 CH17 - Course Quiz
This flashcard set covers Industrial Control Systems (ICS) and their applications in real-world environments. It emphasizes where ICS are commonly found—such as power grids, factories, and treatment plants—while clarifying that they are not typically installed in suburban homes.
Where would you NOT find an Industrial Control System installed?
City Power Grid
Automobile Factor
Typical suburban home
Wastewater Treatment Plant
Typical suburban home
Key Terms
Where would you NOT find an Industrial Control System installed?
City Power Grid
Automobile Factor
Typical suburban home
Wastewater Treatment Plant
Typical suburban home
We sometimes segment networks to be in compliance with standards, laws, or best practices?
True
False
True
The ICS ____________ watches some kind of monitor - the interface and intervenes if necessary?
technician
server
operator
leader
operator
Wireless Printers do not have any specific placement requirements for optimcal functioning?
True
False
False
Which company is leading the cutting edge of the unified communication (UC) field?
Cisco
Oracle
Microsoft
Adobe
Cisco
Early human machine interfaces (HMIs) were custom made boxes with gauges and switches?
True
False
True
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| Term | Definition |
|---|---|
Where would you NOT find an Industrial Control System installed? City Power Grid | Typical suburban home |
We sometimes segment networks to be in compliance with standards, laws, or best practices? True | True |
The ICS ____________ watches some kind of monitor - the interface and intervenes if necessary? technician | operator |
Wireless Printers do not have any specific placement requirements for optimcal functioning? True | False |
Which company is leading the cutting edge of the unified communication (UC) field? Cisco | Cisco |
Early human machine interfaces (HMIs) were custom made boxes with gauges and switches? True | True |
Which industrial constrol system (ICS) device makes changes that modify a characteristic such as Temperature? sensor | actuator Explanation: Making the Change = Actuator Monitoring the Temperature = Sensors Intervening = Operators Process = Controller |
The base station of an IoT System often connects to a WIFI Network to get on the Internet? True | True |
It’s not uncommon to see all the unified communication (UC) servers (as well as the rest of the UC devices) on a separate VLAN? True | True |
H.232 is the least commonly used video presentation protocol (or codec)? True | False |
Medianets are all about avoiding negative press on the Web? True | False |
Which value of the ECN field is the default, indicating “NOT QoS Aware”? 10 | 00 |
Hardening IoT devices decreases the danger of loss or downtime on the devices? True | True |
Real-Time Transport Protocol (RTP) uses UDP, but doesn’t have a hard-and-fast Port for VoIP Systems; many applications use the Internet Engineering Task Force (IETF) recommendation of Ports _______________? 6970 to 6999 | 6970 to 6999 |
ECN is a 4-bit Field? True | False Explanation: |
Presence information services refers to technologies that enable users to show they are present for some form of communication? True | True |
Which value of the ECN Field indicates “QoS aware, congestion encountered”? 01 | 11 |
Which Layer in the OSI Seven Layer Model is responsible for separating broadcast domains by using different subnets or blocking IP Routes? Layer 2 (Data Linke) Layer 1 (Physical) Above Layer 3 Layer 3 (Network) | Layer 3 (Network) |
A human-machine interface (HMI) is used for General Purpose interactions? True | False |
Which TCP Port does the H.323 Video Presentation Protocol use? 1720 | 1720 |
IoT devices are all called “Smart” to distinguish them from their “dumb” unconnectable siblings? True | True |
Which TCP Port does the Session Initiation Protocol (SIP) use for VoIP Systems? 2427 and 2727 | 5060 and 5061 |
All of today’s Bluetooth devices are NOT visable unless they are manually set to privacy mode? True | False Explanation: |
All forms of industrial control system (ICS) are by definition OPEN Networks? True | False |
In a modern DCS, each of the local controllers connects (eventually) to a centralized controller called the ICS where global changes can be managed? server | server |
Many VoIP Systems, such as Skype, are complete internet services that rely on nothing more than software installed on computers and the computers microphone/speakers? True | True |
Within the differentiated services (DiffServ) architecture, how many classes of service (CoS) are there? 8 | 8 |
Which value of ECN field indicates "QoS aware, no congestion"? 20 | 10 Explanation: |
Unified Voice Services were often considered unacceptable in office environments? True | True |
Which industrial control system (ICS) devices monitors characteristics like temperature? interface | sensor |
A is a centralized controller that connects to multiple local controllers? | ICS Server (Industrial Control System) |
A computer that controls a machine according to sets of ordered steps is called a __? | PLC (Programmable Logic Controller) |
A ___ provides the same functions as a controller but has some amount of autonomy and can take advantage of long-distance communication technologies? | RTU (Remote Terminal Unit) |
Newer IoT devices tap into ___ networking technology, which uses a lot less electricity than its predecessor? | Bluetooth Low Energy (BLE) |
A _ is a Network of (typically) far-flung Routers and Servers that provide - via Quality of Service (QoS) and other tools - sufficient bandwidth for VTC? | medianet |
A _ in a UC Network is an edge device, sometimes dedicated but often nothing more than a few extra services added to an existing edge Router? | UC gateway |
Marketing geniuses came up with the term __ to describe the huge variety of devices you can access and control via the Internet (discoutning personal computers, routers, and Servers) and devices that connect directly to Internet Resources? | Internet of Things (IoT) |
As computing power went up and costs went down, it made much more sense to put smaller controllers directly on each machine, to distribute the computing load and create a ? | distributed control system (DCS) |
____ enables people to communicate via Voice and Video simultaneously over an IP Network? | Video Teleconferencing (VTC) |
Physically separating your Network from every other Network occurs on Layer _ of the OSI Model? | 1 (Physical) |
A ___ is typically a dedicated box that supports any UC provided services? | UC Server |
A __ is what we used to call the VoIP Telephone? | UC device |
The overall system that monitors and controls machines today is called _? | Industrial Control System (ICS) |
A group of buildings networked together form a ? | Campus Area Network (CAN) |
The _ is designed from the ground up to be complete VoIP or Video Presentation connection and session controller - in essence, taking over all the work from VoIP the SIP Protocol used to do and all the work from Video Presentation done by H.323? | Media Gateway Control Protocol (MGCP) |
A ___ is just a value you may use (think of it like a group) to apply to services, ports, or whatever your QoS device might use? | Class of Service (CoS) |
It's impossible to find any form of SCADA/ICS that doesn't use a _ connection in the cases where it must be open to the public Internet? | Virtual Private Network (VPN) |
Match the following ICS Components to their Definition? [ICS Components] [Definitions] | Machine I/O Functions = Sensors for Monitoring conditions and actuators for making changes. |
Explain several reasons for Segmenting Networks? | Security - also to reduce Network Congestion, Limit Network Problems, and Optimize Performance. |
Briefly explain what is meant by Presence Information Services? | Refers to technologies that enable users to show they are PRESENT for some form of communications. |
Explain how SCADA uses Remote Terminal Units (RTUs)? | RTU's are added to SCADA to provide the same function as a Controller but is designed to have an amount of autonomy, and is designed to take advantage of some form of long-distance communication. |
How do DCS and SCADA systems differ from basic ICS Systems? | DCS (Distributed Computer Systems) are simply an extension of ICS and they use PLC (Programmable Logic Controllers) with no keyboards or monitors, also known as "Headless". SCADA (Supervisory Control and Data Acquisition System) handles ICS over a Large Area, and Long Distances, huge systems. They are more autonomous and READY to take care of just about anything. They use a RTU (REmote Terminal Unit) which is a more powerful PLC. |
Briefly describe the services unified communications adds to the classic VoIP? | It's considered to be VoIP on steroids. Allows for Collaborative Tools/Workflow sessions, Presentations, Video Conferencing in Real Time, and Fax/Messaging, among other things. |
Describe two places where we begin to see connectivity in Closed Systems? | Closed Systems are mostly used with CCTV (Closed-Circuit Televisions) where they are self-contained, in which Video Cameras feed their signal to specific, dedicated monitors and storage devices. They can be monitored in real time by Security Staff, but the monitoring location is limited to wherever the video monitors are placed. |
Describe the cornerstone of differentiated services (DiffServ) in terms of the two pieces of data that go into every IP Header? | Differentiated Services Code Point (DSCP) and Explicit Congestion Notification (ECN) comrpise the differentiated services field. |
Describe the function of a unified communication (UC) Server? | It's basically the Switchboard of a UC System - local connector. Stores Voicemail and handles Intra-Calls. Supports any UC provided services. |
Provide a brief timeline of TCP/IP based communications? | 7 Years ago, TCP/IP-based communications began to replace the traditional PBX-style phone systems in most orgs. Today, TCP/IP communications encompass a range of technologies, including Voice, Video, and Messaging. |
Explain how Operators interact with Controllers? | Operators monitor process, functions - through monitors and the Human-Machine Interface (HMI) and intervenes if needed. |
Explain how the OSI Model can be used to help understand Network segmentation? | Layer 1 (Physical) - Separates your Network physically. Layer 2 (Data Link) - Separates your Network into separate Broadcast Domains. Layer 3 (Network) - Separates the Broadcast Domains by using different Subnets or blocking IP Routes. Above Layer 3 - VPNs separate SSIDs, separate Windows Domains, Virtualization. |