Computer network and telecommunication, Lecture notes of Introduction to Computing

Describes the numerous communications networks and their key elements.

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COLLEGE OF COMPUTING STUDIES
Bachelor of Science in Information Technology
DHVSU Main Campus, Villa de Bacolor, Pampanga
CC 113A โ€“ Introduction to Computing Page 1 of 7
Chapter 6 โ€“ Computer Network and Telecommunications
Disclaimer:
This handout is
for purely educational purposes,
and exclusive only for the
Introduction to Computing subject
of 1styear BSIT students of Don Honorio Ventura State University-Main Campus-CCS. Any reproduction of this material whether thru a
printed or digital process is
STRICTLY PROHIBITED
. This material is strictly
NOT TO BE USED
for any commercial intent.
DON HONORIO VENTURA STATE UNIVERSITY
Chapter 6 โ€“ Computer Network and Telecommunications (Part 1)
Learning Objectives:
1. Describes the numerous communications networks and their key elements.
2. Identify the network's benefits and drawbacks.
3. Establish the terms associated with a computer network.
4. Identify elements related to computing networks.
Summary:
Computer Networks
- It is a series of interconnected computers/devices where the interconnection is formed to share
resources, data and applications in order to communicate between the computers/devices.
- Sending and receiving data stored on other computers over the network is the aim of getting a
computer network.
Five Basic Components of a Computer Network
1. Message - is data or information that needs to be transmitted over a computer network from
one device to another device.
2. Sender - is the computer that has the data and needs to transfer the data to another network-
connected system.
3. Receiver - The computer that awaits data from other devices on the network is a receiver.
4. Transmission media โ€“ We need a communication medium such as wires, cables, radio waves
etc. to transfer data from one device to another device.
5. Protocol โ€“ It is a set of rules agreed by both the sender and the receiver, two devices can be
connected to each other without a protocol but cannot communicate.
Features of a Computer Network
1. Performance
2. Data Sharing
3. Backup
4. Software and hardware compatibility
5. Reliability
6. Security
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COLLEGE OF COMPUTING STUDIES

Bachelor of Science in Information Technology

DHVSU Main Campus, Villa de Bacolor, Pampanga CC 113A โ€“ Introduction to Computing Page 1 of 7 Chapter 6 โ€“ Computer Network and Telecommunications

Disclaimer: This handout is for purely educational purposes, and exclusive only for the Introduction to Computing subject

of 1 styear BSIT students of Don Honorio Ventura State University-Main Campus-CCS. Any reproduction of this material whether thru a

Chapter 6 โ€“ Computer Network and Telecommunications (Part 1) Learning Objectives:

_1. Describes the numerous communications networks and their key elements.

  1. Identify the network's benefits and drawbacks.
  2. Establish the terms associated with a computer network.
  3. Identify elements related to computing networks._ Summary: Computer Networks
  • It is a series of interconnected computers/devices where the interconnection is formed to share resources, data and applications in order to communicate between the computers/devices.
  • Sending and receiving data stored on other computers over the network is the aim of getting a computer network. Five Basic Components of a Computer Network
  1. Message - is data or information that needs to be transmitted over a computer network from one device to another device.
  2. Sender - is the computer that has the data and needs to transfer the data to another network- connected system.
  3. Receiver - The computer that awaits data from other devices on the network is a receiver.
  4. Transmission media โ€“ We need a communication medium such as wires, cables, radio waves etc. to transfer data from one device to another device.
  5. Protocol โ€“ It is a set of rules agreed by both the sender and the receiver, two devices can be connected to each other without a protocol but cannot communicate. Features of a Computer Network
  6. Performance
  7. Data Sharing
  8. Backup
  9. Software and hardware compatibility
  10. Reliability
  11. Security

COLLEGE OF COMPUTING STUDIES

Bachelor of Science in Information Technology

DHVSU Main Campus, Villa de Bacolor, Pampanga CC 113A โ€“ Introduction to Computing Page 2 of 7 Chapter 6 โ€“ Computer Network and Telecommunications

Disclaimer: This handout is for purely educational purposes, and exclusive only for the Introduction to Computing subject

of 1 styear BSIT students of Don Honorio Ventura State University-Main Campus-CCS. Any reproduction of this material whether thru a
  1. Scalability Computer Network Architecture
  • It explains how to link computers to obtain the full benefits of a computer network, such as better response time, safety, scalability, etc. 1. Peer to Peer Architecture - All computers in a computer network are linked to another computer in the network in a peer-to-peer architecture. Every machine on the network uses the same resources as other machines. No central computer acts as a server, but all computers act as a server for the data stored in them. 2. Client Server Architecture โ€“ A central computer functions as a hub in the Client Server architecture and serves all client computer requests. All shared data is stored on the server machine, which is shared with the client machine when the client machine makes a request.

COLLEGE OF COMPUTING STUDIES

Bachelor of Science in Information Technology

DHVSU Main Campus, Villa de Bacolor, Pampanga CC 113A โ€“ Introduction to Computing Page 4 of 7 Chapter 6 โ€“ Computer Network and Telecommunications

Disclaimer: This handout is for purely educational purposes, and exclusive only for the Introduction to Computing subject

of 1 styear BSIT students of Don Honorio Ventura State University-Main Campus-CCS. Any reproduction of this material whether thru a
  1. The bus network - It is the most common configuration currently. A central data cable is used, to which it is possible to connect each computer (and other devices such as printers and routers). While bottlenecks can occur, its popularity stems from its inherent robustness: without disrupting the rest of the network, devices can be added or removed.

COLLEGE OF COMPUTING STUDIES

Bachelor of Science in Information Technology

DHVSU Main Campus, Villa de Bacolor, Pampanga CC 113A โ€“ Introduction to Computing Page 5 of 7 Chapter 6 โ€“ Computer Network and Telecommunications

Disclaimer: This handout is for purely educational purposes, and exclusive only for the Introduction to Computing subject

of 1 styear BSIT students of Don Honorio Ventura State University-Main Campus-CCS. Any reproduction of this material whether thru a

Types of Computer Networks

๏‚ง Personal Area Network (PAN)
  • It is a network of computers that links computers/devices within an individual's range. Types of Personal Area Network (PAN)
    1. Wireless PAN
    2. Wired PAN

COLLEGE OF COMPUTING STUDIES

Bachelor of Science in Information Technology

DHVSU Main Campus, Villa de Bacolor, Pampanga CC 113A โ€“ Introduction to Computing Page 7 of 7 Chapter 6 โ€“ Computer Network and Telecommunications

Disclaimer: This handout is for purely educational purposes, and exclusive only for the Introduction to Computing subject

of 1 styear BSIT students of Don Honorio Ventura State University-Main Campus-CCS. Any reproduction of this material whether thru a

Reference/s: ๏‚ง Introduction to Computer Applications and Concepts. Retrieved from: https://courses.lumenlearning.com/computerapps/ ๏‚ง https://beginnersbook.com/2019/03/types-of-computer-network-lan-man-and-wan/ ๏‚ง https://www.geeksforgeeks.org/overview-of-personal-area-network- pan/?fbclid=IwAR0zjlXw8R9Ty0tCiliBLaCpTPqnnXUI5LU8E9e7S0L7XIfiUXcTxVzVypQ ๏‚ง https://www.dummies.com/programming/networking/network-basics-geographic-size/ Prepared by: MISS MYKA A. CRUZ, LPT, MIT IT Instructor