Data Communication | Basic Elements of a Communication System | Bandwidth
At the end of this lesson-
1. You will be able to explain the concept of data communication.
2. You will be able to describe the elements of data communication system.
3. You will be able to explain the data communication speed.
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What is Data communication?
Data communications refers to the transmission of the digital data between two or more nodes in a network. OR Data communication refers to the reliable exchange of data or information from one place to another or from one device to another in a network. Emails, SMS, Phone calls, Chatting etc. are ...
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Data Transmission Method : Asynchronous | Synchronous | Isochronous
At the end of this lesson-
1. You will be able to explain the concept of data transmission method.
2. You will be able to classify the data transmission method.
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What is Data Transmission method?
In data communication system the method used to establish link to different devices and bit synchronization with time for data transmission within is called data transmission method.
Types of data transmission method:
Based on number of wire connections data transmission methods are of two types. Such as:
Parallel data Transmission
Serial...
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Data Transmission mode | Data Delivery mode
At the end of this lesson-
You will be able to explain the concept of data transmission mode.
You will be able to explain the concept of data delivery mode.
You will be able to classify the data transmission mode.
You will be able to classify the data delivery mode.
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What is Data Transmission mode?
The direction of transmitting data from source to one or more destination is called data transmission mode. or The way in which data is transmitted from one device to another device is known as transmission mode. The transmission mode is also ...
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Wired Medium : Twisted Pair Cable | Coaxial Cable | Optical Fiber Cable
At the end of this lesson-
1. You will be able to explain the concept of data communication medium.
2. You will be able to describe the types of wired medium.
3. You will be able to describe the twisted pair cable.
4. You will be able to describe the Co-axial cable.
5. You will be able to describe the fiber optic cable.
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What is Medium?
Physical path through which data is transferred by establishing a link between sender and receiver is called medium. There are two types of medium:
What is Channel?
Specific wave frequency or wire ...
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Wireless Medium : Radio Wave | Microwave | Infrared
At the end of this lesson-
1. You will be able to explain the concept of wireless data communication medium.
2. You will be able to describe the types of wireless medium.
3. You will be able to describe radio wave, microwave, Infrared.
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What is Wireless Medium?
Radio wave
Microwave
Infrared
The medium used to exchange information in a wireless communication system is called Wireless or Unguided Medium. In wireless communication systems, information is transmitted over long distances with the help of electromagnetic waves with...
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Wireless Communication System : Bluetooth | WiFi | WiMAX
At the end of this lesson-
1. You will be able to describe wireless communication system.
2. You will be able to explain the importance of wireless communication system.
3. You will be able to explain Bluetooth technology.
4. You will be able to explain Wi-Fi technology.
5. You will be able to explain WiMAX technology.
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What is Wireless Communication System?
Wireless Communication System where transmitting information from one point to other, without using any any physical medium.
Some of the important Wireless Communication Systems available...
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Mobile Communication | Generation of Mobile Phone
At the end of this lesson-
You will be able to explain the concept of cellular phone.
You will be able to explain different technologies of mobile phone.
You will be able to explain different generations of mobile phone.
A mobile phone is an an electric device used for full duplex two way radio telecommunication over a cellular network of base stations known as cell site.
Mobile Communication is the use of technology that allows us to communicate with others in different locations without the use of any physical connection (wires or cables). Mobile communication ma...
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Computer Network : PAN, LAN, CAN, MAN, WAN
At the end of this lesson-
1. You will be able to explain the concept of Computer Network.
2. You will be able to explain the objectives of Computer Network.
3. You will be able to describe different types of Computer Network.
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What is Computer Network?
A computer network is a system in which multiple computers are connected to each other to share information and resources.
Objective of Computer Network:
Hardware Resource Share
Software Resource Share
Information Resource Share
File Share
Communication
Security
...
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Network Devices : NIC | Hub | Switch | Router | Bridge | Gateway | Repeater
At the end of this lesson-
1. You will be able to describe different network devices.
2. You will be able to describe the uses of different network devices.
3. You will be able to explain the advantages and disadvantages of different network devices.
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Network devices:
Hardware devices that are used to connect computers, printers, fax machines and other electronic devices to a network are called network devices. These devices transfer data in a fast, secure and correct way over same or different networks. Network devices may be inter-network or intra...
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Network Topology : Bus | Ring | Star | Tree | Mesh | Hybrid
At the end of this lesson-
1. You will be able to explain the concept of network topology.
2. You will be able to explain different topologies.
3. You will be able to explain uses, advantages and disadvantages of different network topologies.
4. You will be able to analyze which topology is suitable for which situation.
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What is Network Topology?
Geometric representation of how the computers of a network are connected to each other is known as network topology.
Topologies may define both physical and logical aspect of the network. Both logical a...
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Cloud Computing : Services & Advantages of Cloud Computing
At the end of this lesson-
1. You will be able to explain the concept of cloud computing.
2. You will be able to describe the Deployment Models of cloud computing.
3. You will be able to describe the Service Models of cloud computing.
4. You will be able to explain the advantages and disadvantages of cloud computing.
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What is Cloud computing?
Cloud computing is some internet based services given by some organization to a user such as: manipulating, configuring, and accessing the hardware and software resources remotely. It offers online data sto...
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HSC ICT Chapter 2 : Comprehension Based Questions & Answers
How to write answers to a comprehension based question?
⇒ 'Comprehension' refers to the ability to understand the meaning of a topic. It can be the ability to understand any information, policy, formula, rule, procedure, process etc.
⇒ Perceptual level is the second level of thinking skills. This question is given in 'b'. Such questions do not directly ask for textbook-like details. So the student has to explain or describe the content in his own way.
⇒ Marks of comprehension based question will be 2. Out of which 1 is for knowledge and 1 is for comprehension.
⇒ Comprehension based q...
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Second Chapter: Knowledge Based Questions & Answers.
What is data communication?
What is bandwidth?
What is Data transmission method?
What is parallel data transmission?
What is is serial data transmission?
What is bit synchronization?
What is asynchronous data transmission method?
What is synchronous data transmission method?
What is data transmission mode?
What is simplex mode?
What is half-duplex mode?
What is full-duplex mode?
What is data communication medium?
What is co-axial cable?
What is twisted pair cable?
What is radio wave?
What is micro wave?
What is infrared?
What is hotspot...
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HSC ICT Chapter 2 MCQ Board Question Solution Communication System
HSC ICT Chapter 2 important MCQ solutions including board questions from 2023, 2019, 2018, 2017 and 2016. I hope that understanding and solving these questions will provide you with good preparation.
What is data communication?
[Dha. B. 2016]
a) Exchange of information between two devices
b) Flow of information without a medium
c) Flow of information only over a wire
d) Communication only via a computer
What are the basic/fundamental elements of data communication?
a) 3
b) 4
c) 5
d) 6
Basic elements of data communication includes-...
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