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CompTIA Network+ N10-008 > CH17 - Course Quiz > Flashcards

CH17 - Course Quiz Flashcards

1
Q

Where would you NOT find an Industrial Control System installed?

City Power Grid
Automobile Factor
Typical suburban home
Wastewater Treatment Plant

A

Typical suburban home

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2
Q

We sometimes segment networks to be in compliance with standards, laws, or best practices?

True
False

A

True

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3
Q

The ICS ____________ watches some kind of monitor - the interface and intervenes if necessary?

technician
server
operator
leader

A

operator

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4
Q

Wireless Printers do not have any specific placement requirements for optimcal functioning?

True
False

A

False

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5
Q

Which company is leading the cutting edge of the unified communication (UC) field?

Cisco
Oracle
Microsoft
Adobe

A

Cisco

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6
Q

Early human machine interfaces (HMIs) were custom made boxes with gauges and switches?

True
False

A

True

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7
Q

Which industrial constrol system (ICS) device makes changes that modify a characteristic such as Temperature?

sensor
controller
actuator
interface

A

actuator

Explanation:
Making the Change = Actuator
Monitoring the Temperature = Sensors
Intervening = Operators
Process = Controller
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8
Q

The base station of an IoT System often connects to a WIFI Network to get on the Internet?

True
False

A

True

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9
Q

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
False

A

True

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10
Q

H.232 is the least commonly used video presentation protocol (or codec)?

True
False

A

False

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11
Q

Medianets are all about avoiding negative press on the Web?

True
False

A

False

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12
Q

Which value of the ECN field is the default, indicating “NOT QoS Aware”?

10
01
00
11

A

00

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13
Q

Hardening IoT devices decreases the danger of loss or downtime on the devices?

True
False

A

True

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14
Q

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
5004 to 5015
2427 to 2727
5030 to 5035

A

6970 to 6999

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15
Q

ECN is a 4-bit Field?

True
False

A

False

Explanation:
It’s a 2-bit Field

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16
Q

Presence information services refers to technologies that enable users to show they are present for some form of communication?

True
False

A

True

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17
Q

Which value of the ECN Field indicates “QoS aware, congestion encountered”?

01
11
10
00

A

11

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18
Q

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)
A

Layer 3 (Network)

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19
Q

A human-machine interface (HMI) is used for General Purpose interactions?

True
False

A

False

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20
Q

Which TCP Port does the H.323 Video Presentation Protocol use?

1720
5061
2427
5004

A

1720

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21
Q

IoT devices are all called “Smart” to distinguish them from their “dumb” unconnectable siblings?

True
False

A

True

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22
Q

Which TCP Port does the Session Initiation Protocol (SIP) use for VoIP Systems?

2427 and 2727
5004 and 5005
5060 and 5061
5030 and 5031

A

5060 and 5061

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23
Q

All of today’s Bluetooth devices are NOT visable unless they are manually set to privacy mode?

True
False

A

False

Explanation:
It’s “Discovery or Discoverable Mode”

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24
Q

All forms of industrial control system (ICS) are by definition OPEN Networks?

True
False

A

False

25
Q

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
workstation
interface
loader

A

server

26
Q

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
False

A

True

27
Q

Within the differentiated services (DiffServ) architecture, how many classes of service (CoS) are there?

8
6
4
2

A

8

28
Q

Which value of ECN field indicates “QoS aware, no congestion”?

20
00
11
10

A

10

Explanation:
Also 01 is the same thing.

29
Q

Unified Voice Services were often considered unacceptable in office environments?

True
False

A

True

30
Q

Which industrial control system (ICS) devices monitors characteristics like temperature?

interface
actuator
controller
sensor

A

sensor

31
Q

A ____________ is a centralized controller that connects to multiple local controllers?

A

ICS Server (Industrial Control System)

32
Q

A computer that controls a machine according to sets of ordered steps is called a ________________?

A

PLC (Programmable Logic Controller)

33
Q

A _________________ provides the same functions as a controller but has some amount of autonomy and can take advantage of long-distance communication technologies?

A

RTU (Remote Terminal Unit)

34
Q

Newer IoT devices tap into _________________________ networking technology, which uses a lot less electricity than its predecessor?

A

Bluetooth Low Energy (BLE)

35
Q

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?

A

medianet

36
Q

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?

A

UC gateway

37
Q

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?

A

Internet of Things (IoT)

38
Q

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 ______________?

A

distributed control system (DCS)

39
Q

__________________ enables people to communicate via Voice and Video simultaneously over an IP Network?

A

Video Teleconferencing (VTC)

40
Q

Physically separating your Network from every other Network occurs on Layer _______________ of the OSI Model?

A

1 (Physical)

41
Q

A _________________ is typically a dedicated box that supports any UC provided services?

A

UC Server

42
Q

A ________________ is what we used to call the VoIP Telephone?

A

UC device

43
Q

The overall system that monitors and controls machines today is called ___________________?

A

Industrial Control System (ICS)

44
Q

A group of buildings networked together form a ______________?

A

Campus Area Network (CAN)

45
Q

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?

A

Media Gateway Control Protocol (MGCP)

46
Q

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?

A

Class of Service (CoS)

47
Q

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?

A

Virtual Private Network (VPN)

48
Q

Match the following ICS Components to their Definition?

[ICS Components]
Operator Interface
Machine I/O Functions
The Controller

[Definitions]
Sensors for Monitoring conditions and actuators for making changes.
A computer that manages a machine and its functions.
A way for the operator to interact with the controller.

A

Machine I/O Functions = Sensors for Monitoring conditions and actuators for making changes.
The Controller = A computer that manages a machine and its functions.
Operator Interface = A way for the operator to interact with the controller.

49
Q

Explain several reasons for Segmenting Networks?

A

Security - also to reduce Network Congestion, Limit Network Problems, and Optimize Performance.
In some cases it’s also the standards, laws, or best practices that some organizations must follow.
Easier troubleshooting as well.

50
Q

Briefly explain what is meant by Presence Information Services?

A

Refers to technologies that enable users to show they are PRESENT for some form of communications.

51
Q

Explain how SCADA uses Remote Terminal Units (RTUs)?

A

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.

52
Q

How do DCS and SCADA systems differ from basic ICS Systems?

A

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.

53
Q

Briefly describe the services unified communications adds to the classic VoIP?

A

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.

54
Q

Describe two places where we begin to see connectivity in Closed Systems?

A

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.

55
Q

Describe the cornerstone of differentiated services (DiffServ) in terms of the two pieces of data that go into every IP Header?

A

Differentiated Services Code Point (DSCP) and Explicit Congestion Notification (ECN) comrpise the differentiated services field.

56
Q

Describe the function of a unified communication (UC) Server?

A

It’s basically the Switchboard of a UC System - local connector.

Stores Voicemail and handles Intra-Calls.

Supports any UC provided services.

57
Q

Provide a brief timeline of TCP/IP based communications?

A

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.

58
Q

Explain how Operators interact with Controllers?

A

Operators monitor process, functions - through monitors and the Human-Machine Interface (HMI) and intervenes if needed.

59
Q

Explain how the OSI Model can be used to help understand Network segmentation?

A 
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.

CompTIA Network+ N10-008 (32 decks)

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