COSC 354 - Networks Chapter 4 Exam Questions and Answers Already Passed Latest Update
2025-2026
What layer does connecting peripheral devices? - Answers Physical Layer
The connection to a peripheral is often called the? - Answers Interface
The process of providing all the proper interconnections between a computer and a peripheral is
called? - Answers Interfacing
There are essentially two types of Interface Standards what are they? - Answers 1. Official
Standards
2. De Facto Standards
What standard making organizations are apart of Official Interface Standards? - Answers ITU,
IEEE, EIA, ISO, ANSI
There are four possible components to an interface standard. What are they? - Answers 1.
Electrical Component
2. Mechanical Component
3. Functional Component
4. Procedural Component
What does the Electrical Component of the interface do? - Answers Deals with voltages, line,
capacitance, and other electrical characteristics.
What does the Mechanical Component of the interface do? - Answers Deals with items such as
the connector or plug description.
What does the Functional Component of the interface do? - Answers describes the function of
each pin or circuit that is used in a particular interface.
What does the Procedural Component of the interface do? - Answers describes how the
particular circuits are used to perform an operation.
Two important Interface Standards - Answers 1. EIA-232F
2. USB (Universal Serial Bus)
What is the EIA-232F? - Answers an older standard originally designed to connect a modem to a
computer.
What is a USB? - Answers a newer standard that is much more powerful than EIA-232F.
, Early EIA-232F name? And Components used? - Answers Originally named RS-232 and all four
components are defined in the EIA-232F standard.
EAI-232 also used the definitions? - Answers DTE and DCE
What is DTE? - Answers An example of DTE, or data terminating equipment, is a computer.
What is DCE? - Answers An example of a DCE, or data circuit-terminating equipment, is some
form of modem.
EIA-232F defines what type of connection? - Answers Full-duplex connection
What is a full-duplex connection? - Answers It transmits data in both direction and at the same
time.
What is a half-duplex connection? - Answers It transmits data in both directions but in only one
direction at a time.
What is a simplex connection? - Answers It can transmit data in only one direction.
The USB interface is a modern standard for? - Answers Interconnecting a wide range of
peripheral devices to computers.
What does the USB support? - Answers It supports plug and play, and can daisy-chain multiple
devices.
USB 2.0 can support? - Answers 480Mbps (USB 1.0 is only 12Mbps)
USB 3.0 can support? - Answers 4.8Gbps
The USB interface defines? - Answers All four components. Electrical Component defines two
wires. The mechanical Component defines the size of four different connectors.
Types of USB connecctors? - Answers Type A, Type B, Mini, and Micro
What is FireWire? - Answers A hot-swappable interface that connects peripheral devices to a
computer.
Low-Cost Digital Interface
Capable of supporting transfer speeds of up to 800Mbps
What are the two types of Data connections for FireWire? - Answers Asynchronous, and
Isochronous connection.
2025-2026
What layer does connecting peripheral devices? - Answers Physical Layer
The connection to a peripheral is often called the? - Answers Interface
The process of providing all the proper interconnections between a computer and a peripheral is
called? - Answers Interfacing
There are essentially two types of Interface Standards what are they? - Answers 1. Official
Standards
2. De Facto Standards
What standard making organizations are apart of Official Interface Standards? - Answers ITU,
IEEE, EIA, ISO, ANSI
There are four possible components to an interface standard. What are they? - Answers 1.
Electrical Component
2. Mechanical Component
3. Functional Component
4. Procedural Component
What does the Electrical Component of the interface do? - Answers Deals with voltages, line,
capacitance, and other electrical characteristics.
What does the Mechanical Component of the interface do? - Answers Deals with items such as
the connector or plug description.
What does the Functional Component of the interface do? - Answers describes the function of
each pin or circuit that is used in a particular interface.
What does the Procedural Component of the interface do? - Answers describes how the
particular circuits are used to perform an operation.
Two important Interface Standards - Answers 1. EIA-232F
2. USB (Universal Serial Bus)
What is the EIA-232F? - Answers an older standard originally designed to connect a modem to a
computer.
What is a USB? - Answers a newer standard that is much more powerful than EIA-232F.
, Early EIA-232F name? And Components used? - Answers Originally named RS-232 and all four
components are defined in the EIA-232F standard.
EAI-232 also used the definitions? - Answers DTE and DCE
What is DTE? - Answers An example of DTE, or data terminating equipment, is a computer.
What is DCE? - Answers An example of a DCE, or data circuit-terminating equipment, is some
form of modem.
EIA-232F defines what type of connection? - Answers Full-duplex connection
What is a full-duplex connection? - Answers It transmits data in both direction and at the same
time.
What is a half-duplex connection? - Answers It transmits data in both directions but in only one
direction at a time.
What is a simplex connection? - Answers It can transmit data in only one direction.
The USB interface is a modern standard for? - Answers Interconnecting a wide range of
peripheral devices to computers.
What does the USB support? - Answers It supports plug and play, and can daisy-chain multiple
devices.
USB 2.0 can support? - Answers 480Mbps (USB 1.0 is only 12Mbps)
USB 3.0 can support? - Answers 4.8Gbps
The USB interface defines? - Answers All four components. Electrical Component defines two
wires. The mechanical Component defines the size of four different connectors.
Types of USB connecctors? - Answers Type A, Type B, Mini, and Micro
What is FireWire? - Answers A hot-swappable interface that connects peripheral devices to a
computer.
Low-Cost Digital Interface
Capable of supporting transfer speeds of up to 800Mbps
What are the two types of Data connections for FireWire? - Answers Asynchronous, and
Isochronous connection.
