Second Chapter

Second Chapter Lesson-11: 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 characteristics of cloud computing.  3. You will be able to explain the advantages and disadvantages of 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 storage, infrastructure, and application. Cloud computing has three characteristics-Resource Scalability On demand ...
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Second Chapter Lesson-10: Network Topology.

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.   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 and physical topologies could be ...
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Second Chapter Lesson-9: Network Devices.

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.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-network.   Different Network Devices:Mode...
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Second Chapter Lesson-8: Computer Networking.

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. 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 Office AutomationTypes of Computer Network:...
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Second Chapter Lesson-7: Mobile Communication.

At the end of this lesson-1. You will be able to explain the concept of cellular phone. 2. You will be able to explain different technologies of mobile phone. 3. You will be able to explain different generations of mobile phone.    Lesson Evaluation- Knowledge Based Questions:Comprehension Based Questions:Creative Questions:Multiple Choice Questions: Written by,Mizanur Rahman (Mizan) Lecturer of ICT, Shaheed Bir Uttam Lt. Anwar Girls’ College , Dhaka Cantonment  Author at www.edupointbd.com Software Engineer at mands I...
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Second Chapter Lesson-6: Wireless Communication System.

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.  There are various types of wireless communication system developed based on the use of different electromagnetic waves for data transmission. Such as:Radio wave based system: Wi-Fi, Mobile, Bluetooth Microwave based system: WiMax Infr...
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Second Chapter Lesson-5: Data Communication Medium(Wireless).

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.  The wave length of Electromagnetic Wave(EMW) can be 10-14 meter (microscopic) to 10+14 meter (as large as several football field). The total range of wavelength of Electromagnetic Wave(EMW) is called Electro Magnetic Spectrum.This Electro Magnetic  Spectrum is divided into several smaller range according to the characteristics. Such...
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Second Chapter Lesson-4: Data Communication Medium(Wired).

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. 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:Wire or Guided MediumTwisted Pair Cable Co-axial Cable Fiber Optic Cable ...
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Second Chapter Lesson-3: Data transmission mode.

At the end of this lesson-1. You will be able to explain the concept of data transmission mode. 2. You will be able to classify the 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 known as the communication mode. Each communication channel has a direction associated with it, and transmission media provide the direction. Therefore, the transmission mode is a...
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Second Chapter Lesson-2: Data transmission method.

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. 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 data TransmissionParallel Data Transmission: In Parallel data tr...
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Second Chapter Lesson-1: Data communication, Data communication system and it’s efficiency.

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. Data communication: Data communications refers to the transmission of the digital data between two or more nodes in a network. Emails, SMS, Phone calls, Chatting etc. are examples of data communication.For data communication between digital devices softwares are required. These softwares are called communication software.Data communicati...
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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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Second Chapter: Comprehension Based Questions & Answers.

What is the reason to take more time in asynchronous transmission?-Explain. Explain character by character data transmission method. Why primary memory is needed in synchronous transmission method?-Explain. “Data can be transmitted in same intervals”-Explain. Explain the data transmission mode of the Radio. Why is it not possible to talk and listen simultaneously in the Walkie Talkie? Which transmission mode can be compared to the teaching in class room?-Explain. Explain the data transmission mode of Walkie Talkie.  Explain the data transmission mode of Mobile Phone...
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