What is a protocol in data communications?

A set of rules that govern data communications.

How is "text" represented in data representation?

As a bit pattern, a sequence of bits (0s and 1s).

What is simplex communication?

Unidirectional communication where only one device can transmit.

What is half-duplex mode?

Each station can both transmit and receive, but not at the same time.

What is full duplex communication?

Both stations can transmit and receive simultaneously.

A set of devices (nodes) connected by communication links.

What is a node in a network?

A device capable of sending and/or receiving data, such as a computer or printer.

What is distributed processing?

A task divided among multiple computers.

What are the criteria for network performance?

Performance, Reliability, and Security.

What is transit time in network performance?

The amount of time required for a message to travel from one device to another.

What is response time in network performance?

The elapsed time between an inquiry and a response.

What is point-to-point connection?

A dedicated link between two devices.

What is multipoint connection?

A connection where more than two specific devices share a single link.

What is physical topology?

The way in which a network is laid out physically.

What is mesh topology?

Every device has a dedicated point-to-point link to every other device.

What is star topology?

Each device needs only one link to connect to any number of others.

What is bus topology?

A multipoint topology where one long cable acts as a backbone to link all devices.

What is ring topology?

Each device has a dedicated point-to-point connection with only the two devices on either side.

What is hybrid topology?

A combination of different topologies, such as a star topology with branches in a bus topology.

A Local Area Network that covers an area less than 2 miles, usually privately owned.

A Wide Area Network that can span worldwide.

What is a Metropolitan Area Network (MAN)?

A network with a size between a LAN and a WAN, covering an area inside a town or city.

What is an internetwork?

When two or more networks are connected, they become an internetwork.

What is the Internet?

A structured system of interconnected networks.

A small network of connected computers developed by the Advanced Research Projects Agency.

Transmission Control Protocol, responsible for higher-level functions in data transmission.

What is the role of Internet Service Providers (ISPs)?

To provide connectivity and services to end users and connect networks.

A set of rules that govern data communications, defining what, how, and when data is communicated.

What does syntax refer to in protocols?

The structure or format of the data.

What does semantics refer to in protocols?

The meaning of each section of bits.

What does timing refer to in protocols?

When data should be sent and how fast they can be sent.

What are standards in data communications?

Guidelines to ensure interconnectivity in communications.

is two or more networks that can communicate with each other.

collaboration of more than hundreds of thousands of interconnected networks.

University of California at Los Angeles (UCLA) , the University of California at Santa Barbara (UCSB) , Stanford Research Institute (SRI) , and the University of Utah

are smaller ISPs that are connected to one or more national ISPs.

Regional Internet Service Providers

provide direct service to the end users.

Local Internet service providers

The system must deliver the data accurately.

ECET4midterm Flashcards

Student preview

56 questions

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1.

FLASHCARD QUESTION

Front

What is telecommunications?

Back

Communication at a distance, including telephony, telegraphy, and television.

2.

FLASHCARD QUESTION

Front

What does data refer to?

Back

Information presented in whatever form is agreed upon by the parties creating and using the data.

3.

FLASHCARD QUESTION

Front

What are data communications?

Back

The exchange of data between two devices via some form of transmission medium.

4.

FLASHCARD QUESTION

Front

What are the fundamental characteristics of data communication?

Back

Delivery, Accuracy, Timeliness, Jitter, and Message.

5.

FLASHCARD QUESTION

Front

What is the role of a sender in data communication?

Back

The sender is the device that sends the data message.

6.

FLASHCARD QUESTION

Front

What is the role of a receiver in data communication?

Back

The receiver is the device that receives the message.

7.

FLASHCARD QUESTION

Front

What is a transmission medium?

Back

The physical path by which a message travels from sender to receiver.

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