Podcast
Questions and Answers
What is the 4–20 mA signal commonly used for?
What is the 4–20 mA signal commonly used for?
- Character error detection
- Data compression techniques
- Global language coding
- Industrial communications standards (correct)
What is impedance in the context of electrical circuits?
What is impedance in the context of electrical circuits?
- The measure of noise immunity
- The steady state resistance
- The difference in electrical potential
- The opposition a conductor offers to a changing current value (correct)
What do standard signals allow manufacturers to do?
What do standard signals allow manufacturers to do?
- Increase resistance in current loops
- Limit the use of digital standard signals
- Build instruments for a larger group of users (correct)
- Restrict compatibility with other vendors
Which digital communication standard is primarily used in process control?
Which digital communication standard is primarily used in process control?
What is EBCDIC primarily used for?
What is EBCDIC primarily used for?
What does ASCII use a ninth bit for?
What does ASCII use a ninth bit for?
What is the purpose of block parity?
What is the purpose of block parity?
Which organization designed one of the first digital communications codes?
Which organization designed one of the first digital communications codes?
What is the difference between ASCII and EBCDIC?
What is the difference between ASCII and EBCDIC?
What does the ITA2 Telegraph Code use for efficiency?
What does the ITA2 Telegraph Code use for efficiency?
What are fieldbuses primarily used for?
What are fieldbuses primarily used for?
What does the international standard for an industrial fieldbus define?
What does the international standard for an industrial fieldbus define?
What is the purpose of the block parity character in the transmitted block?
What is the purpose of the block parity character in the transmitted block?
In which layer of the OSI model is packet data referred to as frames?
In which layer of the OSI model is packet data referred to as frames?
What is the primary purpose of a CRC character in data transmission?
What is the primary purpose of a CRC character in data transmission?
What is the difference between a checksum and a CRC?
What is the difference between a checksum and a CRC?
What is the purpose of an Automatic Retransmission Query (ARQ) in error correction?
What is the purpose of an Automatic Retransmission Query (ARQ) in error correction?
What is the main function of forward error correction?
What is the main function of forward error correction?
Why is parity checking considered less efficient than CRC for error detection?
Why is parity checking considered less efficient than CRC for error detection?
What happens when there is simplex transmission with regards to error correction?
What happens when there is simplex transmission with regards to error correction?
Which error detection code may be mislabeled as a checksum, but is actually a cyclic code?
Which error detection code may be mislabeled as a checksum, but is actually a cyclic code?
What kind of code divides the text bits with a binary polynomial to create a check character?
What kind of code divides the text bits with a binary polynomial to create a check character?
In data communications, what are the three modes of transmission?
In data communications, what are the three modes of transmission?
What are the three types of media used in data communications?
What are the three types of media used in data communications?
What is the purpose of communication?
What is the purpose of communication?
What are the possible topologies for data communications?
What are the possible topologies for data communications?
What is a communications channel composed of?
What is a communications channel composed of?
What are the members of a network likely to have?
What are the members of a network likely to have?
What are the three elements required in any communication?
What are the three elements required in any communication?
What is the organization of data in communication sometimes called?
What is the organization of data in communication sometimes called?
What are the different types of relationships members of a network may have?
What are the different types of relationships members of a network may have?
What are the two types of communications circuits?
What are the two types of communications circuits?
What is the term used to describe a mode of transmission where communication can travel in both directions simultaneously?
What is the term used to describe a mode of transmission where communication can travel in both directions simultaneously?
How is a digital signal defined?
How is a digital signal defined?
What is the term used for a continuous signal that represents some other time varying quantity?
What is the term used for a continuous signal that represents some other time varying quantity?
What term is used to describe a signal that has the approval of the users and/or a standardization agency?
What term is used to describe a signal that has the approval of the users and/or a standardization agency?
What term is used to describe a mode of transmission where one speaker communicates at a time?
What term is used to describe a mode of transmission where one speaker communicates at a time?
What is the term used to describe a binary digit that can be either '1' or '0'?
What is the term used to describe a binary digit that can be either '1' or '0'?
What is the primary function of American Standard Code for Information Interchange (ASCII)?
What is the primary function of American Standard Code for Information Interchange (ASCII)?
Why is 'unidirectional' considered a more appropriate name for the simplex mode of transmission?
Why is 'unidirectional' considered a more appropriate name for the simplex mode of transmission?
What term best describes the way data should be organized to yield information usable to humans?
What term best describes the way data should be organized to yield information usable to humans?
What term best describes the feature of a digital signal where it has only two defined states?
What term best describes the feature of a digital signal where it has only two defined states?
What is the primary reason the ARQ method will not receive an ACK/NAK on a unidirectional circuit?
What is the primary reason the ARQ method will not receive an ACK/NAK on a unidirectional circuit?
What is the main requirement for FEC (Forward Error Correction) to be effective?
What is the main requirement for FEC (Forward Error Correction) to be effective?
What is the physiological reason behind the protocol of shaking hands when introduced to someone in the United States?
What is the physiological reason behind the protocol of shaking hands when introduced to someone in the United States?
What does 'baud rate' refer to in the context of data communication?
What does 'baud rate' refer to in the context of data communication?
Which protocol is characterized by control depending on specific character combinations rather than bit patterns?
Which protocol is characterized by control depending on specific character combinations rather than bit patterns?
What distinguishes bit-oriented protocols from character-based protocols?
What distinguishes bit-oriented protocols from character-based protocols?
What purpose do start delimiters serve in bit-oriented protocols?
What purpose do start delimiters serve in bit-oriented protocols?
What is the key characteristic of Bi-Sync protocol's operation?
What is the key characteristic of Bi-Sync protocol's operation?
What is the primary distinguishing feature of bit-oriented protocols?
What is the primary distinguishing feature of bit-oriented protocols?
What is a characteristic feature of framing in bit-oriented protocols?
What is a characteristic feature of framing in bit-oriented protocols?
What was the primary reason behind developing Bi-Sync protocol's duplex operation?
What was the primary reason behind developing Bi-Sync protocol's duplex operation?
What has been the focus of this chapter in terms of introducing foundational concepts?
What has been the focus of this chapter in terms of introducing foundational concepts?
