Data Communication Basics

Questions and Answers

Which component is responsible for sending data in a data communication system?

Protocol

Sender (correct)

Receiver

Medium

The term telecommunication refers to communication over short distances.

False

What are the five components of a data communications system?

Message, Sender, Receiver, Medium, Protocol

The means through which data is sent from one location to another is called the ______.

medium Signup and view all the answers

Match the following elements of data communication with their descriptions:

Sender = Device that sends data Receiver = Device that receives data Protocol = Rules for data transmission Medium = Means of transmitting data Signup and view all the answers

What is true about simplex data transmission?

Data is transmitted in only one direction. Signup and view all the answers

In half-duplex mode, data can be transmitted in both directions simultaneously.

False Signup and view all the answers

What type of connection involves exactly two devices connected by a single link?

Point-to-point connection Signup and view all the answers

In full duplex, data can be transmitted in both directions __________.

simultaneously Signup and view all the answers

Match the following data transmission types with their characteristics:

Simplex = One-way transmission, no receiving capability Half-duplex = Both directions, but only one at a time Full-duplex = Both directions simultaneously Point-to-point = Connection between exactly two devices Signup and view all the answers

Study Notes

Data Communication Overview

Telecommunication refers to communication over distances, involving the exchange of data between devices.
Data transmission requires accuracy and timeliness to ensure information reaches the correct destination.

Components of Data Communications

Message: The information to be transmitted, which can be text, numbers, images, audio, or video.
Sender: The device or computer originating the data, often a modern digital system.
Receiver: The device or computer that receives the data, which could be a computer, printer, or fax machine.
Medium: The transmission medium, such as wire cables, telephone lines, or microwaves, connecting the sender and receiver.
Protocols: The set of rules governing data transmission between sender and receiver for proper communication.

Key Elements of Data Communication

Delivery: Ensures data is sent to the intended recipient without errors; accuracy is crucial for usability.
Timeliness: Data must be delivered promptly, especially for real-time audio or video transmissions, to maintain their relevance.

Data Flow Modes

Simplex: One-way communication where data is sent from sender to receiver without return signals (e.g., radio broadcasting).
Half Duplex: Two-way communication but cannot send and receive simultaneously; each device takes turns to transmit (e.g., walkie-talkies).
Full Duplex: Simultaneous two-way communication, allowing faster data transmissions (e.g., telephone conversations).

Networks and Connection Types

A network consists of interconnected nodes, including devices capable of sending or receiving data.
Point-to-Point Connection: Direct connection between two devices using a single cable for data exchange.
Multi-Point Connection: Involves three or more devices sharing a common link for communication.

Description

Explore the fundamentals of data communication, which involves the exchange of data between devices over various transmission mediums. This quiz covers essential components such as the message, sender, receiver, medium, and protocol to ensure accurate and timely data delivery.