Introduction to Information Technology · Unit 7
Data Transmission and Switching
Exam-focused notes for Data Transmission and Switching (Introduction to Information Technology, BIT101): what the TU syllabus asks and how it has actually been tested, with 4 solved past questions from this unit.
What this unit covers
- Switching techniques overview
- Circuit switching technique
- Message switching technique
- Packet switching technique and working
- Packet definition and structure
- Modulation and demodulation
Packet definition and structure
Define a packet. Explain the working of the packet switching technique. [5]
A packet is a small, fixed or variable-sized unit of data that is formed by breaking a large message into smaller chunks before transmission over a network. Each packet contains: - Header - source address, destination address, sequence number, and control i...
Full solved answer →Define a packet. Explain the working of the packet switching technique. [5]
A packet is a small unit of data that is broken down from a larger message for transmission across a network. Each packet contains: - Header - source address, destination address, sequence number, and control information - Payload (Data) - the actual chunk ...
Full solved answer →Modulation and demodulation
Write short notes on: a. Modulation and Demodulation Write short notes on: b. Cryptography [2.5+2.5]
Modulation is the process of converting digital or analog data signals into a suitable form for transmission over a communication medium by varying one or more properties of a carrier wave. - Digital signals cannot travel long distances efficiently - To all...
Full solved answer →Switching techniques overview
What is switching technique?Name the three kinds of switching techniques. Describe briefly the circuit switching and message switching techniques.[4+6]
A switching technique is a method used in telecommunication and computer networks to establish a communication path (route) between two or more devices so that data can be transferred from a source to a destination. When multiple devices are connected in a ...
Full solved answer →Make Unit 7 stick
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