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DCS > Buses Topologies, Protocols, and the OSI model > Flashcards

Buses Topologies, Protocols, and the OSI model Flashcards

1
Q

Framing and error correction format of data transfer, flow control use

A

Data link Layer 2

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2
Q

Channel for transfer of messages of one application process to another. Packet or frame accounting, improving reliability

A

Transport Layer 4

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3
Q

Optimum routing of messaging from one network to another

A

Network Layer 3

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4
Q

File transfer, message exchange, program use

A

Application Layer 7

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5
Q

Data format, encryption, compression of data

A

Presentation Layer 6

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6
Q

Organization, synchronization of same protocol applications between nodes

A

Session Layer 5

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7
Q

Electrical and mechanical definition of the system, cables, voltages, etc

A

Physical Layer 1

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8
Q

best describes protocol with respect to communication

A

A series of convention or standards that control or enable connections between two endpoints

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9
Q

Character based flow control technique used in ASCII communication

A

XON/XOFF

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10
Q

TCP/IP was originally invented/funded by

A

The United States Department of Defence

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11
Q

The digital data using Analog signaling, data transmission method is associated with

A

HART and telephone modems

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12
Q

The Analog data using Analog signaling, data transmission method is associated with

A

4-20 mA current loop and AM/FM radio

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13
Q

CSMA/CD is an acronym that stands for

A

Carrier Sense Multiple Access/Collision Detection

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14
Q

Communication arbitration is how each node shares the same network. - NOT a communication arbitration method

A

Point to Point

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15
Q

NOT a sensor level protocol

A

HART

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16
Q

NOT a device level protocol

A

LON

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17
Q

The HART baud rate, “1” bit frequency and “0” bit frequency, restively is

A

1200bps, 1200 Hz, 2200 Hz

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18
Q

A major advantage Foundation Fieldbus provides is

A

Peer to Peer communication

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19
Q

The communication speed of an H1, Foundation Fieldbus segment is

A

31.25 Kbps

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20
Q

AS-I but protocol allows for fast update rates from the combination of

A

167 KBaud, cyclic polling, limit of 31 slaves, 4 devices/per slave maximum

21
Q

Fieldbus protocol that uses Manchester encoding

A

Profibus

22
Q

When we transmit an Ethernet message, what OSI layer does TCP/IP come into

A

Transport Layer 4

23
Q

control Network protocol uses category 5e cabling for communications?

A

Foundation Fieldbus HSE

24
Q

Layer of the OSI model, handles framing and error correction, formatting of data, data transfer, flow control use, bus arbitration?

A

Layer 2-Datalink

25
Q

Layer of the OSI model, establishes the connection of two computers and manages their “meeting” over the internet?

A

Layer 3-Network

26
Q

NOT a characteristic of Device protocols

A

Functions are digital in nature, towards process sensing and manipulation

27
Q

Fundamental difference of Foundation Fieldbus-H1 compared to other device level protocols

A

Ability for the devices to process the algorithm

28
Q

Who invented the HART protocol?

A

Rosemount Measurement

29
Q

Proprietary protocol is a “for the good of all” protocol whose software code is shared by all members, and therefore members typically find solutions for all issues as a collective

A

False

30
Q

An open source protocol is one whose software code is kept secret by the software developer and sold to application users

A

False

31
Q

TCP/IP doesn’t come into play until the need to traverse differing networks begins

A

True

32
Q

The advantage of FTP, is that it allows for many physically different networks, to be linked together, providing flexibility, regardless of differing physical and data link layers

A

False

33
Q

The Unix or Linux operating system is an open source type operating system.

A

True

34
Q

Many physically different networks, are capable of utilizing TCP/IP, providing flexibility, regardless of differing OSI layers 1 and 2

A

True

35
Q

A proprietary protocol is one whose software code is kept secret by the software developer and sold to application users

A

True

36
Q

Manchester encoding utilizes positive edge and negative edge encoding for 1s and 0s respectively

A

True

37
Q

Manchester encoding provides its own baud rate detection, by way of its waveform structure or characteristics

A

True

38
Q

A Ring network topology requires end-of-line resistors

A

False

39
Q

Device Networks focus on providing extra data from process instrumentation

A

True

40
Q

Sensor Networks, focus on providing data for IT applications, email, internet, SAP (single assess point), Microsoft Office Suite

A

False

41
Q

Frame collisions increase network bandwidth

A

False

42
Q

Device type Protocol functions, are analog in nature towards process control sensing and manipulation

A

True

43
Q

Foundation Fieldbus uses Manchester encoding as its bit arbitration method

A

True

44
Q

Control Network support multiple masters which allows peer to peer, client/server, publisher/subscriber communication techniques

A

True

45
Q

Asynchronous communication is often used with NRZ encoding

A

True

46
Q

Phase shift keying varies the phase angle of the transmitted signal to encode data, and incorporates what is known as a “dibit” from each sine waveform

A

True

47
Q

The CAN bus arbitration method, or who gets to talk on the network, looks for the first dominant node to communicate a 0 to 1 transition in the arbitration message

A

False

48
Q

Highway Addressable Remote transducer is the full name of HART protocol

A

True

49
Q

Modicon was the developer of the DeviceNet protocol

A

False

DCS (4 decks)

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