This document provides an introduction to computer networks. It defines a computer network as two or more interconnected computers that can share resources. Networks rely on protocols, services, and standards to govern how applications request and provide network functions like message transfer. The document discusses why networks are used for resource sharing and communication within and between organizations. It also outlines different types of computer networks including those classified by size, ownership, topology, transmission medium, connection management, and transmission technology. Finally, it notes that networks comprise both hardware like computers, cables, and devices as well as software like operating systems, applications, and network protocols.
I have discussed about the common problem of network issues of a computer . How we can find out what is the bug on our network wizerd and what should we do for that perticular problem . I also discussed about the physical hardware problem and how to find out what the problem is and what is the way to find the solution for it . If you think for a problem that i am finished or my machine is finished it is your foolishness . So you can read my slides and can find out the problem and their solution .
I have discussed about the common problem of network issues of a computer . How we can find out what is the bug on our network wizerd and what should we do for that perticular problem . I also discussed about the physical hardware problem and how to find out what the problem is and what is the way to find the solution for it . If you think for a problem that i am finished or my machine is finished it is your foolishness . So you can read my slides and can find out the problem and their solution .
Billions of connected devices and things. Billions of people. 5G will provide connectivity for all of these things and people as well as businesses and industry, bringing benefit to society. Operating machinery in hazardous environments from a remote control will be enabled through near-zero latency communication links that enable real-time video. Billions of video-enabled devices will be able to share bandwidth-hungry content. These are just a few applications that illustrate what 5G will be designed for.
Overview of wireless and mobile technologies.
Advances in signal processing technologies are a technological driver for wireless technologies. Different technologies like 3G (WAN), WLAN (LAN), Bluetooth (PAN) and WiMAX (MAN) target different applications and markets. Since most of the frequency spectrum is still regulated in the different countries, newer technologies aim for non-regulated bands such as the 2.4GHz and 5GHz ISM bands.
In order to fully exploit untethered operation, wireless devices are fitted with roaming and handover protocols like 802.11r or Mobile IP. Layer 2 protocols typically provide faster handover but are restricted to specific link layer protocols. Layer 3 or higher protocols like Mobile IP are independent of the link layer thus work across heterogeneous networks.
A computer network is defined as the interconnection of two or more computers. It is done to enable the computers to communicate and share available resources.
Components of computer network
Network benefits
Disadvantages of computer network
Classification by their geographical area
Network classification by their component role
Types of servers
In this slide, you will know about the basic of data communication
* What is Data Communication?
* Types and characteristics of Data Communication
* Components of Data Communication
* Computer Networks
* Transmission medium
* Fiber optic cable (advantage and disadvantage)
Slide deck from our Basics of Computer Networking webinar lead by instructor Daniel Cummins. Networks are as different as the people and organizations that use them. Despite those differences, there are some foundational components that all networks share. Explore different types of networks and the common components that must exist in these networks. Learn more about TCP/IP, the protocol suite that connects the whole world together and look at the ways in which we connect to the world via the Internet. Topics covered include network components, network types, and network protocols. For more information on networking training, visit https://ter.li/37zcnu
Multi-hop Wireless Networks (MHWNs):
It is defined as a collection of nodes that communicate with each other wirelessly by using radio signals with a shared common channel.
Next Generation Network Architecture, by Sunny Yeung.
A presentation given at APRICOT 2016’s Opening Ceremony and APRICOT Plenary 1 session on 22 February 2016.
According to GSMA, 5G to account for 15% of the global mobile industry by 2025 as 5G network launches accelerate. 5G is on track to account for 15% of global mobile connections by 2025, as the number of 5G network launches and compatible devices ramps up in 2019, according to a new GSMA report. Let us look at the supporting technologies for 5G and the widespread applications of 5G across multiple industries.
To Download this PPT click on the link below:-
http://www29.zippyshare.com/v/14569917/file.html
Networking
Computer network
Types of network
Personal Area Networks (PANs)
Local Area Networks (LANs)
Metropolitan Area Networks (MANs)
Wide Area Networks (WANs)
Classification of Network Architecture
Client-server architecture
Peer-to-peer architecture
Hybrid architecture
Network topology
Bus Topology
Star Topology
Ring Topology
Mesh Topology
Tree Topology
Hybrid Topology
Billions of connected devices and things. Billions of people. 5G will provide connectivity for all of these things and people as well as businesses and industry, bringing benefit to society. Operating machinery in hazardous environments from a remote control will be enabled through near-zero latency communication links that enable real-time video. Billions of video-enabled devices will be able to share bandwidth-hungry content. These are just a few applications that illustrate what 5G will be designed for.
Overview of wireless and mobile technologies.
Advances in signal processing technologies are a technological driver for wireless technologies. Different technologies like 3G (WAN), WLAN (LAN), Bluetooth (PAN) and WiMAX (MAN) target different applications and markets. Since most of the frequency spectrum is still regulated in the different countries, newer technologies aim for non-regulated bands such as the 2.4GHz and 5GHz ISM bands.
In order to fully exploit untethered operation, wireless devices are fitted with roaming and handover protocols like 802.11r or Mobile IP. Layer 2 protocols typically provide faster handover but are restricted to specific link layer protocols. Layer 3 or higher protocols like Mobile IP are independent of the link layer thus work across heterogeneous networks.
A computer network is defined as the interconnection of two or more computers. It is done to enable the computers to communicate and share available resources.
Components of computer network
Network benefits
Disadvantages of computer network
Classification by their geographical area
Network classification by their component role
Types of servers
In this slide, you will know about the basic of data communication
* What is Data Communication?
* Types and characteristics of Data Communication
* Components of Data Communication
* Computer Networks
* Transmission medium
* Fiber optic cable (advantage and disadvantage)
Slide deck from our Basics of Computer Networking webinar lead by instructor Daniel Cummins. Networks are as different as the people and organizations that use them. Despite those differences, there are some foundational components that all networks share. Explore different types of networks and the common components that must exist in these networks. Learn more about TCP/IP, the protocol suite that connects the whole world together and look at the ways in which we connect to the world via the Internet. Topics covered include network components, network types, and network protocols. For more information on networking training, visit https://ter.li/37zcnu
Multi-hop Wireless Networks (MHWNs):
It is defined as a collection of nodes that communicate with each other wirelessly by using radio signals with a shared common channel.
Next Generation Network Architecture, by Sunny Yeung.
A presentation given at APRICOT 2016’s Opening Ceremony and APRICOT Plenary 1 session on 22 February 2016.
According to GSMA, 5G to account for 15% of the global mobile industry by 2025 as 5G network launches accelerate. 5G is on track to account for 15% of global mobile connections by 2025, as the number of 5G network launches and compatible devices ramps up in 2019, according to a new GSMA report. Let us look at the supporting technologies for 5G and the widespread applications of 5G across multiple industries.
To Download this PPT click on the link below:-
http://www29.zippyshare.com/v/14569917/file.html
Networking
Computer network
Types of network
Personal Area Networks (PANs)
Local Area Networks (LANs)
Metropolitan Area Networks (MANs)
Wide Area Networks (WANs)
Classification of Network Architecture
Client-server architecture
Peer-to-peer architecture
Hybrid architecture
Network topology
Bus Topology
Star Topology
Ring Topology
Mesh Topology
Tree Topology
Hybrid Topology
It covers
Definition and Objectives of computer networks
Networking models : Peer-to-Peer and Client-Server
Types of Networks : PAN, LAN, MAN, WAN
Networking Topologies: MESH, STAR, RING, BUS, HYBRID
Basic concept of Computer networks and
distributed systems, Goals of networking, General approaches of communication
within a network, Network classification, Uses & Network Softwares.
This is a notes about basic introduction of computer networks. It contain details about the definition of computer network, ARPANET, goals of computer network, application of computer network and details about networking hardware & software components.
PAN -Personal Area Network – Linking local devices e,g, PC to printer. LAN – Local Area network- links devices in an office or offices. MAN – Metropolitan Area network – links devices across multiple buildings like a campus. WAN – Wide area network – links devices across a country/countries.
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2. What is a computer network?
1
A computer network is a computer system comprising of
two or more computers that are linked together by a
telecommunication medium.
It is the interconnection of computers that are able to
communicate and share resources.
From a software perspective, a computer network is a
collection of the applications, protocols, services and
standards that govern how two or more computers
interact to share resources.
3. Protocols, services and standards:
2
Protocols are the rules that govern how network services
are requested and offered.
Network services are the functions that are performed by
the network on behalf of the applications (users).
Network services will include functions such as
composing a message, error checking, moving messages
from point A to B, and so on.
Network standards define the accepted level of operation
of the different network services.
They act as a benchmark for the services requested and
offered.
5. Network hosts & peripherals
4
The computers connected to a network a generally
referred to as network hosts.
The printer in figure above is referred to as a
peripheral, or a shared resource.
If a printer has the capability to connect to the network
directly, it is called a network enabled printer, and in this case
it is a host.
The term networking is used to refer to the process
of creating and configuring a network.
6. Server and client machines
5
Network hosts can be classified into two
Server
Client
A client computer is one that uses a shared resource
owned by another host.
A server computer is one that owns or contains a
shared resource on a network.
In our sample network, we have two servers and
three clients.
A print server
A file server
7. Why computer networks:
6
Consider your mobile phone handset:
Why do you need it?
Why should it be on a network?
What do you use it for?
We are living in a connected world where people work
through collaborations.
For example: each member of a project team generates a
report on a given part of the project. These are then
consolidated to get the final project report. It makes work
easy
Collaboration makes work easy and keeps people in
touch.
8. Why computer networks:
7
We need computer networks for two main reasons:
Resource sharing
Communication.
Using networks we share hardware, software and data
resources with others
For example:
We share a network printer across a network
We can upload, download or read shared files
Software update can be shared across a network from a common
server
We stay in touch with each other using computer
networks: email, VoIP, Video conferencing, etc.
9. Why computer networks:
8
In a specific way, computer networks enable individuals
and organizations to achieve the following:
Communication within an organization
Communication between an organization and another
Sharing data and information
Sharing hardware and peripherals
Sharing software
Centralized administration and control
These benefits are not easily achieved in a non-
networked environment.
Thus we generally refer to a network as a shared
environment.
10. Why computer networks:
9
Communication within an organization:
The employees within an organization are able to
communicate effectively by sending electronic mail
(e-mail) messages to each other in real time.
Individuals are also able to call each other or send
short messages (SMS) to each other.
11. Why computer networks:
10
Communication between organizations:
With the help of a network, the employees in an
organization are able to communicate with employees in
other organizations.
The dean of student at KeMU can send an e-mail to the
principle of Meru Technical Training Institute (MTTI)
without having to go there, as long as each of them has a
computer that is connected to the shared network.
To achieve this, this requires the interconnection of the
networks of the two organizations.
We refer to such a interconnection as an Internetwork (or
internet).
12. Why computer networks:
11
Sharing data and information:
The value of a computer system is its ability to process
the required information.
Once the information is processed, it is used in an
organization to achieve its goals.
The data/files that are created by one employee in an
organization can be shared by other employees through a
computer network.
This enables collaboration in the achievement of the
objectives of the organization.
It reduces the time required in completing different tasks
within the organization.
13. Why computer networks:
12
Sharing hardware and peripherals:
Peripheral devices such as printers are essential in
the operation of an organization, but they are also
costly.
Since it is not possible for each employee to have
their own printer, a single printer can be shared by
several employees effectively across a computer
network.
Users can also share the space on the hard disk drive
to store data.
14. Why computer networks:
13
Sharing software:
A computer network makes it possible to store
software on one machine and then share it on the
other computer across a network.
It also allows the sharing of software licenses.
15. Why computer networks:
14
Centralized administration and control:
The administration and control of the hardware and
software within an organization can easily and
effectively be achieved over a computer network.
System administrators are able to install and
configure both hardware and software from a remote
location.
Software updates are also easily deployed across the
network, reducing the amount of time involved.
User access can also be managed.
16. Types of computer networks:
15
Six ways to classify computer networks:
By the scope or size of the networks
By ownership of the network Infrastructure
By the topology: (topologies are covered in module 2)
Classification by Transmission media
By the mode of managing the connection
By transmission technology used
17. Types of computer networks:
16
Classification by the scope or size of the networks:
Local Area Networks (LAN)
Personal Area Network (PAN)
Metropolitan Area Networks (MAN)
Campus Area Networks (CAN)
Wide Area Networks (WAN)
18. Types of computer networks:
17
Classification by ownership of the network
Infrastructure:
Private networks – A private network is one where
both the equipment and infrastructure are entirely
owned by a single person or organizations.
Public Networks – this is a type of network where the
interconnection devices and infrastructure is owned and
maintained by the state on behalf of a people. No single
person or institution can claim ownership or control of a
public network. It is available for all and shared by all.
19. Types of computer networks:
18
Classification by the topology: (topologies are
covered in module 2)
Bus Networks – this is a network where the devices are
connected using the bus topology and its associated
technologies.
Ring Networks – in these networks, the devices are
connected to form a ring.
Star Networks – the devices in this network are
connected based on a star topology.
Hybrid Networks – in these networks, there is a
combination of two or more topologies in the organization of
the devices in the network.
20. Types of computer networks:
19
Classification by the transmission medium used:
(transmission media is covered in module 2)
Wired Networks – these are networks where the
devices are connected using some form of cables.
Wireless Networks – in these networks, no cables are
used. The signal is transmitted through the air from one
point to the next.
21. Types of computer networks:
20
Classification by the mode of managing the connection:
Peer-to-peer Networks – these are computer networks
where each node manages its end of the connection and its
local resources while sharing the resources with the other
networks hosts. No single host controls the network. These
networks are also referred to as workgroup networks.
Client-Server networks – in a client-server network, one
host is dedicated as the server to the network, and controls
how the other hosts communicate and share resources. All the
other hosts are clients. In certain cases, there can be two or
more servers in a client-server network, each dedicated to a
different resource.
22. Types of computer networks:
21
Classification by transmission technology used:
Broadcast Networks – broadcast networks
communicate by sending the packets to the shared
media, then allowing each node to sample a get a copy
where necessary. The packets move along the shared
medium until it reached the intended recipients.
Broadcast networks are based on shared medium
protocols.
Point-to-Point Networks – in point-to-point
networks, a packet is sent directly to a single destination.
In such networks there is a direct path between any two
communicating devices. Each connection is shared by
only two devices, which it connects.
23. Network components:
22
Like any other computer system, a computer
network comprises of hardware and software
components.
The hardware comprise of the computers, peripheral
devices, cables/interconnection medium, and the
interconnection devices.
Computer software comprise of the operating
systems, server applications, client applications, as
well as the protocols and standards that govern the
delivery of network services.