This document provides an overview of computer networking concepts. It discusses the components of a computer network including nodes, communication protocols, networking devices, network media, and common network types. It describes Local Area Networks (LANs), Wide Area Networks (WANs), and other network architectures. The document also outlines networking fundamentals such as the TCP/IP protocol suite, Ethernet, wireless networks, and network threats.
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, media, threats, and cloud computing. It then defines what a computer network is and describes common network components like nodes, interconnections, and communication protocols. The document outlines different network types including LANs, WANs, MANs, SANs, and VPNs. It also discusses network devices, media, protocols, and advantages of networks.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include the Internet protocol suite, Ethernet, wireless LANs, fiber optic and copper cabling, bridges, switches, routers, firewalls, the client-server model and peer-to-peer networking. Network advantages like simultaneous access and easier data backup are also summarized.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include LANs, WANs, the TCP/IP protocol suite, Ethernet, fiber optic and twisted pair cabling, switches, routers, firewalls, the internet, cloud computing and wireless technologies like Bluetooth and Wi-Fi. The document is intended as an introductory course on computer networking fundamentals.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include LANs, WANs, the TCP/IP protocol suite, Ethernet, fiber optic and copper cabling, switches, routers, firewalls, the internet, cloud computing and wireless technologies like Bluetooth and Wi-Fi. The document is intended as an introductory course on computer networking fundamentals.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include LANs, WANs, the TCP/IP protocol suite, Ethernet, fiber optic and copper cabling, switches, routers, firewalls, the internet, cloud computing and wireless technologies like Bluetooth and Wi-Fi. The document is intended as an introductory course on computer networking fundamentals.
Computer Network and its applications, different kinds of technologies and di...ssuser036308
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, uses of networks, network media, threats, and cloud computing. It then defines what a computer network is and describes common network components like nodes, interconnections, and communication protocols. The document outlines different network types including LANs, WANs, MANs, SANs, and VPNs. It also discusses common networking devices, network media options, and example communication protocols.
A computer network links several computers. Office networks allow people to w...sherinjoyson
One of the first computer networks to use packet switching, ARPANET, was developed in the mid-1960s and is the direct predecessor of the modern Internet.
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, media, threats, and cloud computing. It then defines what a computer network is and describes common network components like nodes, interconnections, and communication protocols. The document outlines different network types including LANs, WANs, MANs, SANs, and VPNs. It also discusses network devices, media, protocols, and advantages of networks.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include the Internet protocol suite, Ethernet, wireless LANs, fiber optic and copper cabling, bridges, switches, routers, firewalls, the client-server model and peer-to-peer networking. Network advantages like simultaneous access and easier data backup are also summarized.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include LANs, WANs, the TCP/IP protocol suite, Ethernet, fiber optic and twisted pair cabling, switches, routers, firewalls, the internet, cloud computing and wireless technologies like Bluetooth and Wi-Fi. The document is intended as an introductory course on computer networking fundamentals.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include LANs, WANs, the TCP/IP protocol suite, Ethernet, fiber optic and copper cabling, switches, routers, firewalls, the internet, cloud computing and wireless technologies like Bluetooth and Wi-Fi. The document is intended as an introductory course on computer networking fundamentals.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include LANs, WANs, the TCP/IP protocol suite, Ethernet, fiber optic and copper cabling, switches, routers, firewalls, the internet, cloud computing and wireless technologies like Bluetooth and Wi-Fi. The document is intended as an introductory course on computer networking fundamentals.
Computer Network and its applications, different kinds of technologies and di...ssuser036308
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, uses of networks, network media, threats, and cloud computing. It then defines what a computer network is and describes common network components like nodes, interconnections, and communication protocols. The document outlines different network types including LANs, WANs, MANs, SANs, and VPNs. It also discusses common networking devices, network media options, and example communication protocols.
A computer network links several computers. Office networks allow people to w...sherinjoyson
One of the first computer networks to use packet switching, ARPANET, was developed in the mid-1960s and is the direct predecessor of the modern Internet.
The Computer Network - All the basic Knowledgessuseree2ffc
A computer network is a group of computers/devices(Nodes) that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes.
Network- computer networking by vinod pptDhruvilSTATUS
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, uses of networks, network media, threats, and cloud computing. It then defines what a computer network is and describes common network components like nodes, interconnections, and communication protocols. The document outlines different network types including LANs, WANs, MANs, and more. It also discusses network devices, media, protocols, and advantages of networks.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, protocols, media, and topologies. It describes common network types such as LANs, WANs, MANs, and VPNs. It also explains networking devices such as switches, routers, and firewalls. Wireless technologies like Bluetooth and Wi-Fi are introduced. The purpose of computer networks to share resources located on network nodes is highlighted.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include the Internet protocol suite, Ethernet, wireless LANs, fiber optic and copper cabling, bridges, switches, routers, firewalls, the client-server model and peer-to-peer networking. Network topologies such as bus, star, ring and mesh are defined along with short-range wireless technologies like Bluetooth and Wi-Fi. The document serves as an introductory guide to fundamental computer networking principles and technologies.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, and network topologies. Specific networking devices like switches, routers, and firewalls are defined. Wireless networking standards like Bluetooth and Wi-Fi are also mentioned. The purpose of computer networks to share resources located on network nodes is highlighted.
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, uses of networks, network media, threats, and cloud computing. It then defines what a computer network is and describes common network components like nodes, interconnections, and communication protocols. The document outlines different network types including LANs, WANs, MANs, and more. It also discusses network devices, media, protocols, and advantages of networks.
This document provides an overview of computer networks, including:
- Common network types like LANs, WANs, and the internet.
- Network components such as servers, switches, routers, and firewalls.
- Network cabling options including wired and wireless technologies.
- Communication protocols used for networking like TCP/IP and Ethernet.
- Network topologies including bus, star, ring and mesh configurations.
- Wireless networking standards like Bluetooth and Wi-Fi.
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, uses of networks, network media, threats, and cloud computing. It then defines what a computer network is and describes common networking devices like switches, routers, and firewalls. The document discusses different network types including LANs, WANs, MANs, and VPNs. It also covers topics like network protocols, wireless networks, and network media such as copper cable, fiber optic cable, and wireless.
The document provides an overview of computer networking concepts including:
- Common network types such as LANs, WANs, and wireless networks.
- Network devices such as switches, routers, and firewalls that connect nodes and control data flow.
- Communication protocols like TCP/IP that define rules for exchanging information over networks.
- Network topologies like bus, star, and mesh that determine the physical layout and connections between nodes.
The document provides an overview of computer networking concepts including:
- Common network types such as LANs, WANs, and wireless networks.
- Network devices such as switches, routers, and firewalls that connect nodes and control data flow.
- Communication protocols like TCP/IP that define rules for exchanging information over networks.
- Network topologies including bus, star, and mesh configurations that determine how nodes are physically connected.
The document provides an overview of computer networking concepts including:
- Common network types such as LANs, WANs, and wireless networks.
- Network devices such as switches, routers, and firewalls that connect nodes and control data flow.
- Communication protocols like TCP/IP that define rules for exchanging information over networks.
- Network topologies like bus, star, and mesh that determine the physical layout and connections between nodes.
cpct NetworkING BASICS AND NETWORK TOOL.pptrcbcrtm
The document discusses computer networking concepts including network types (LAN, WAN, MAN, etc.), components (switches, routers, firewalls, etc.), protocols (TCP/IP, Ethernet, etc.), and uses. It provides details on common network devices, media (wired and wireless), and advantages of networking such as simultaneous access and easier data backup. Network diagrams and definitions of key terms are also included to explain networking fundamentals.
introduction to computer Network-20210426203825 (1).pptgauravgoswami78
The document discusses computer networking concepts including network types (LAN, WAN, MAN, etc.), components (switches, routers, firewalls, etc.), protocols (TCP/IP, Ethernet, etc.), and uses. It provides details on common network devices like switches, routers, and firewalls. It also covers network media like wired (copper cable, fiber optic) and wireless and network protocols like TCP/IP, Ethernet, and wireless LAN standards.
The document provides an overview of computer networking concepts including:
- Common network types such as LANs, WANs, and wireless networks.
- Network devices such as switches, routers, and firewalls that connect nodes and control data flow.
- Communication protocols like TCP/IP that define rules for exchanging information over networks.
- Network topologies including bus, star, and mesh configurations that determine how nodes are physically connected.
This document provides an overview of computer networks. It defines what a computer network is and describes common network types like LANs, WANs, and wireless networks. It also discusses network devices like switches, routers, and firewalls. The document outlines different network media like wired and wireless connections. It explains common communication protocols including TCP/IP and Ethernet. Finally, it defines various network types such as personal area networks, local area networks, campus area networks, and storage area networks.
This document provides an overview of computer networks and networking concepts. It begins by covering basic network types like LANs, WANs, and the Internet. It then discusses common networking components like switches, routers, and firewalls. Various network topologies are described along with physical network media like Ethernet cables and wireless technologies. Communication protocols and standards for networking are also outlined. The document provides a comprehensive introduction to computer networks, networking hardware and software, and fundamental networking concepts.
Computer Networking – CSE290 is a course that covers basic concepts of networks including LANs, WANs, the internet, and common network devices. It discusses how networks allow sharing of resources and backups. The document defines what a computer network is and its basic components. It provides details on network media like wired and wireless technologies. Common networking devices like switches, routers, and firewalls are explained. Finally, it discusses different types of networks including LANs, WANs, SANs, and others.
This document provides an overview of advanced networking concepts. It begins with learning objectives around data communication, network devices, protocols, topologies and network types. It then defines key networking components like switches, routers, and firewalls. It discusses different network topologies, media like Ethernet and wireless, and various network types including LAN, WAN, SAN and more. The document is intended to help readers understand fundamental networking concepts.
This document provides an overview of essential networking concepts. It begins with an introduction to data communication systems and their basic components. It then covers data representation formats, data flow types, common network models, categories of networks including PAN, LAN, WAN, etc. It also discusses network topologies, common networking devices, transmission media, switching techniques and important networking criteria. The document provides definitions and examples of key concepts like routers, switches, hubs and wireless networking. It concludes with an overview of circuit switching versus packet switching.
For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
Robin van Emden, Senior Director of Data Science at Network Optix, presents the “Building and Scaling AI Applications with the Nx AI Manager,” tutorial at the May 2024 Embedded Vision Summit.
In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.
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Similaire à Computer Networking - Complete Resume Guide
The Computer Network - All the basic Knowledgessuseree2ffc
A computer network is a group of computers/devices(Nodes) that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes.
Network- computer networking by vinod pptDhruvilSTATUS
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, uses of networks, network media, threats, and cloud computing. It then defines what a computer network is and describes common network components like nodes, interconnections, and communication protocols. The document outlines different network types including LANs, WANs, MANs, and more. It also discusses network devices, media, protocols, and advantages of networks.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, protocols, media, and topologies. It describes common network types such as LANs, WANs, MANs, and VPNs. It also explains networking devices such as switches, routers, and firewalls. Wireless technologies like Bluetooth and Wi-Fi are introduced. The purpose of computer networks to share resources located on network nodes is highlighted.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, networking devices, network topologies and wireless networks. Specific topics covered include the Internet protocol suite, Ethernet, wireless LANs, fiber optic and copper cabling, bridges, switches, routers, firewalls, the client-server model and peer-to-peer networking. Network topologies such as bus, star, ring and mesh are defined along with short-range wireless technologies like Bluetooth and Wi-Fi. The document serves as an introductory guide to fundamental computer networking principles and technologies.
This document provides an overview of computer networking concepts. It discusses the basic components of networks including nodes, communication protocols, network media, common network types, and network topologies. Specific networking devices like switches, routers, and firewalls are defined. Wireless networking standards like Bluetooth and Wi-Fi are also mentioned. The purpose of computer networks to share resources located on network nodes is highlighted.
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, uses of networks, network media, threats, and cloud computing. It then defines what a computer network is and describes common network components like nodes, interconnections, and communication protocols. The document outlines different network types including LANs, WANs, MANs, and more. It also discusses network devices, media, protocols, and advantages of networks.
This document provides an overview of computer networks, including:
- Common network types like LANs, WANs, and the internet.
- Network components such as servers, switches, routers, and firewalls.
- Network cabling options including wired and wireless technologies.
- Communication protocols used for networking like TCP/IP and Ethernet.
- Network topologies including bus, star, ring and mesh configurations.
- Wireless networking standards like Bluetooth and Wi-Fi.
The document discusses computer networks and networking concepts. It begins by outlining the course content, which includes network types, uses of networks, network media, threats, and cloud computing. It then defines what a computer network is and describes common networking devices like switches, routers, and firewalls. The document discusses different network types including LANs, WANs, MANs, and VPNs. It also covers topics like network protocols, wireless networks, and network media such as copper cable, fiber optic cable, and wireless.
The document provides an overview of computer networking concepts including:
- Common network types such as LANs, WANs, and wireless networks.
- Network devices such as switches, routers, and firewalls that connect nodes and control data flow.
- Communication protocols like TCP/IP that define rules for exchanging information over networks.
- Network topologies like bus, star, and mesh that determine the physical layout and connections between nodes.
The document provides an overview of computer networking concepts including:
- Common network types such as LANs, WANs, and wireless networks.
- Network devices such as switches, routers, and firewalls that connect nodes and control data flow.
- Communication protocols like TCP/IP that define rules for exchanging information over networks.
- Network topologies including bus, star, and mesh configurations that determine how nodes are physically connected.
The document provides an overview of computer networking concepts including:
- Common network types such as LANs, WANs, and wireless networks.
- Network devices such as switches, routers, and firewalls that connect nodes and control data flow.
- Communication protocols like TCP/IP that define rules for exchanging information over networks.
- Network topologies like bus, star, and mesh that determine the physical layout and connections between nodes.
cpct NetworkING BASICS AND NETWORK TOOL.pptrcbcrtm
The document discusses computer networking concepts including network types (LAN, WAN, MAN, etc.), components (switches, routers, firewalls, etc.), protocols (TCP/IP, Ethernet, etc.), and uses. It provides details on common network devices, media (wired and wireless), and advantages of networking such as simultaneous access and easier data backup. Network diagrams and definitions of key terms are also included to explain networking fundamentals.
introduction to computer Network-20210426203825 (1).pptgauravgoswami78
The document discusses computer networking concepts including network types (LAN, WAN, MAN, etc.), components (switches, routers, firewalls, etc.), protocols (TCP/IP, Ethernet, etc.), and uses. It provides details on common network devices like switches, routers, and firewalls. It also covers network media like wired (copper cable, fiber optic) and wireless and network protocols like TCP/IP, Ethernet, and wireless LAN standards.
The document provides an overview of computer networking concepts including:
- Common network types such as LANs, WANs, and wireless networks.
- Network devices such as switches, routers, and firewalls that connect nodes and control data flow.
- Communication protocols like TCP/IP that define rules for exchanging information over networks.
- Network topologies including bus, star, and mesh configurations that determine how nodes are physically connected.
This document provides an overview of computer networks. It defines what a computer network is and describes common network types like LANs, WANs, and wireless networks. It also discusses network devices like switches, routers, and firewalls. The document outlines different network media like wired and wireless connections. It explains common communication protocols including TCP/IP and Ethernet. Finally, it defines various network types such as personal area networks, local area networks, campus area networks, and storage area networks.
This document provides an overview of computer networks and networking concepts. It begins by covering basic network types like LANs, WANs, and the Internet. It then discusses common networking components like switches, routers, and firewalls. Various network topologies are described along with physical network media like Ethernet cables and wireless technologies. Communication protocols and standards for networking are also outlined. The document provides a comprehensive introduction to computer networks, networking hardware and software, and fundamental networking concepts.
Computer Networking – CSE290 is a course that covers basic concepts of networks including LANs, WANs, the internet, and common network devices. It discusses how networks allow sharing of resources and backups. The document defines what a computer network is and its basic components. It provides details on network media like wired and wireless technologies. Common networking devices like switches, routers, and firewalls are explained. Finally, it discusses different types of networks including LANs, WANs, SANs, and others.
This document provides an overview of advanced networking concepts. It begins with learning objectives around data communication, network devices, protocols, topologies and network types. It then defines key networking components like switches, routers, and firewalls. It discusses different network topologies, media like Ethernet and wireless, and various network types including LAN, WAN, SAN and more. The document is intended to help readers understand fundamental networking concepts.
This document provides an overview of essential networking concepts. It begins with an introduction to data communication systems and their basic components. It then covers data representation formats, data flow types, common network models, categories of networks including PAN, LAN, WAN, etc. It also discusses network topologies, common networking devices, transmission media, switching techniques and important networking criteria. The document provides definitions and examples of key concepts like routers, switches, hubs and wireless networking. It concludes with an overview of circuit switching versus packet switching.
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For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
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van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.
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Welcome to UiPath Test Automation using UiPath Test Suite series part 6. In this session, we will cover Test Automation with generative AI and Open AI.
UiPath Test Automation with generative AI and Open AI webinar offers an in-depth exploration of leveraging cutting-edge technologies for test automation within the UiPath platform. Attendees will delve into the integration of generative AI, a test automation solution, with Open AI advanced natural language processing capabilities.
Throughout the session, participants will discover how this synergy empowers testers to automate repetitive tasks, enhance testing accuracy, and expedite the software testing life cycle. Topics covered include the seamless integration process, practical use cases, and the benefits of harnessing AI-driven automation for UiPath testing initiatives. By attending this webinar, testers, and automation professionals can gain valuable insights into harnessing the power of AI to optimize their test automation workflows within the UiPath ecosystem, ultimately driving efficiency and quality in software development processes.
What will you get from this session?
1. Insights into integrating generative AI.
2. Understanding how this integration enhances test automation within the UiPath platform
3. Practical demonstrations
4. Exploration of real-world use cases illustrating the benefits of AI-driven test automation for UiPath
Topics covered:
What is generative AI
Test Automation with generative AI and Open AI.
UiPath integration with generative AI
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
2. COURSE CONTENT
Networks: Basic concepts
Uses of networks in sharing of resources, Backups
Common types of networks; LAN/WAN/Internet,
Server based networks, client server model, P2P
Network media
Wireless networks.
Threats to networks
The internet world
Cloud and Cloud Computing
3. THE COMPUTER NETWORK
A computer network is a group of computers/devices(Nodes)
that use a set of common communication protocols over digital
interconnections for the purpose of sharing resources located on
or provided by the network nodes.
The nodes of a computer network may include personal
computers, servers, networking hardware, or other specialised or
general-purpose hosts.
The interconnections between nodes are formed from a broad
spectrum of telecommunication network technologies, based on
physically wired, optical, and wireless technologies.
A communication protocol is a set of rules for exchanging
information over a network. physically wired, optical, and
wireless
4. THE NETWORK DIAGRAM
(CLICK ON THE WORDS BELOW AND LEARN MORE ABOUT EACH COMPONENT)
The Internet
Other LANS
Firewall
Router
Fiber Optic Network Cable
Server
PC
Wireless Network
Wired Network
Switch
5. THE ADVANTAGES/USES OF NETWORK
Simultaneous Access
There are moments in any business when several workers
may need to use the same data at the same time.
Shared Peripheral Devices
Personal Communications
Videoconferencing
Voice over Internet Protocol (VoIP):-VoIP transmits the sound
of voice over a computer network using the Internet Protocol
(IP ) rather than sending the signal over traditional phone
wires
Easier Data Backup
7. 1. NETWORK INTERFACE CARD
NIC is used to physically
connect host devices to the
network media.
A NIC is a printed circuit board
that fits into the expansion slot
of a bus on a computer
motherboard.
It can also be a peripheral
device. NICs are sometimes
called network adapters.
Each NIC is identified by a
unique code called a Media
Access Control (MAC) address.
This address is used to control
data communication for the host
on the network.
8. 2. REPEATERS
A repeater is a network device used to
regenerate a signal.
Repeaters regenerate analog or digital
signals that are distorted by transmission
loss due to attenuation.
A repeater does not make an intelligent
decision concerning forwarding packets
9. 3. HUBS
Hubs concentrate on connections.
In other words, they take a group
of hosts and allow the network to
see them as a single unit. This is
done passively, without any other
effect on the data transmission.
Active hubs concentrate hosts and
also regenerate signals.
10. 4. BRIDGES
Bridges convert network data
formats and perform basic data
transmission management.
Bridges provide connections
between LANs.
They also check data to
determine if it should cross the
bridge. This makes each part of
the network more efficient
11. 5. SWITCHES
Switches add more intelligence to data transfer management.
They can determine if data should remain on a LAN and
transfer data only to the connection that needs it.
Another difference between a bridge and switch is that a
switch does not convert data transmission formats
12. 6. ROUTERS
Routers have all the capabilities listed
above.
Routers can regenerate signals,
concentrate multiple connections,
convert data transmission formats, and
manage data transfers.
They can also connect to a WAN, which
allows them to connect LANs that are
separated by great distances.
13. 7. GATEWAY
A gateway is a piece of networking
hardware used in
telecommunications for
telecommunications networks that
allows data to flow from one discrete
network to another.
Gateways are distinct from routers
or switches in that they
communicate using more than one
protocol to connect a bunch of
networks
14. 8. FIREWALL
A firewall is a network device or
software for controlling network
security and access rules.
Firewalls are inserted in connections
between secure internal networks
and potentially insecure external
networks such as the Internet.
Firewalls are typically configured to
reject access requests from
unrecognized sources while allowing
actions from recognized ones.
The vital role firewalls play in network
security grows in parallel with the
constant increase in cyber attacks.
15. NETWORK MEDIA
The function of the media is to carry a flow of information through a LAN.
A. Wired Media:- A widely adopted family that uses copper and fiber media in
local area network (LAN) technology are collectively known as Ethernet
1. Copper Cable
a. Coaxial Cables
b. Shielded Twisted Pair(STP)
c. Unshielded Twisted Pair
2. Fibre Optic Cable
B. Wireless Media:- use the atmosphere, or space, as the medium.
16. 1. COPPER CABLE
The most common, easiest, quickest,
and cheapest form of network media to
install.
The disadvantage of sending data over
copper wire is that the further the signal
travels, the weaker it becomes.
17. A. COAXIAL CABLE
It can be run longer distances than Twisted pair Cables.
• Speed: 10-100Mbps
• Cost: Inexpensive
• Media and connector size: Medium
• Maximum cable length: 500m
18. B. SHIELDED TWISTED PAIR(STP)
• Speed: 0-100Mbps
• Cost: Moderate
• Media and connector size: Medium to large
• Maximum cable length: 100m
19. C. UNSHIELDED TWISTED PAIR
UTP is a four-pair wire
medium used in a variety of
networks.
Each of the eight copper
wires in the UTP cable is
covered by insulating material
Speed: 10-100-1000 Mbps*
Cost: Least Expensive
Media and connector size: Small
Maximum cable length: 100m * (Depending
on the quality/category of cable)
20. UTP IMPLEMENTATION
EIA/TIA specifies an RJ-45 connector
for UTP cable.
The letters RJ stand for registered jack.
21. FIBER OPTIC CABLE
Glass fiber carrying light pulses, each
pulse a bit.
Based on the Total Internal Reflection
of Light.
High-speed point-to-point
transmission 10-100’s Gbps
low error rate:
repeaters spaced far apart
immune to electromagnetic
noise
22. COMMUNICATION PROTOCOLS
Internet Protocol Suite
Also called TCP/IP, is the foundation of all modern networking.
It defines the addressing, identification, and routing
specifications for IPv4 and for IPv6.
It is the defining set of protocols for the Internet.
IEEE 802
It is a family of IEEE standards dealing with local area networks
and metropolitan area networks.
They operate mostly at levels 1 and 2 of the OSI model.
Ethernet
It is a family of protocols used in wired LANs, described by a set
of standards together called IEEE 802.3
24. COMMUNICATION PROTOCOLS
Wireless LAN
It is standardized by IEEE 802.11 and shares many properties with wired
Ethernet.
SONET/SDH
Synchronous optical networking (SONET) and Synchronous Digital
Hierarchy (SDH) are standardized multiplexing protocols that transfer
multiple digital bit streams over optical Fibre using lasers.
Asynchronous Transfer Mode(ATM)
It uses asynchronous time-division multiplexing and encodes data into
small, fixed-sized cells.
Good choice for a network that handle both traditional high-throughput
data traffic, and real-time, low-latency content such as voice and video.
25. TYPES OF NETWORKS
1. Personal Area Network (PAN)
2. Local Area Network (LAN)
3. Campus Area Network (CAN)
4. Metropolitan Area Network (MAN)
5. Wide Area Network (WAN)
6. Storage-Area Network (SAN)
7. Virtual Private Network (VPN)
8. Client Server Network
9. Peer to Peer Network (P2P)
26. 1. PERSONAL AREA NETWORK
1. Personal Area Network (PAN) is a
computer network used for data
transmission amongst devices
such as computers, telephones,
tablets and personal digital
assistants.
2. Also Known as HAN (Home Area
Network)
3. PANs can be used for
communication amongst the
personal devices themselves
(interpersonal communication), or
for connecting to a higher level
network and the Internet (an
uplink) where one "master" device
takes up the role as internet router.
27. 2. LOCAL AREA NETWORK
Xerox Corporation worked in
collaboration with DEC and
Intel to create Ethernet, which
is the most pervasive LAN
architecture used today.
Ethernet has evolved and has
seen significant improvements
in regard to speed and
efficiency.
An upside of a LAN is fast data transfer with data speed that can reach
up to 10Gbps.
Other significant LAN technologies are Fiber Distributed Data Interface
(FDDI) and token ring.
28. 3. CAMPUS AREA NETWORK
Larger than LANs, but smaller
than metropolitan area networks
these types of networks are
typically seen in universities,
large K-12 school districts or
small businesses.
They can be spread across
several buildings that are fairly
close to each other so users can
share resources
29. 4. METROPOLITAN AREA NETWORK
1. A MAN is larger than a LAN but smaller than or equal in size to a WAN.
2. The size range anywhere from 5 to 50km in diameter.
3. MANs are typically owned and managed by a single entity.
4. This could be an ISP or telecommunications company that sells its services
to end-users in that metropolitan area.
5. For all intents and purposes, a MAN has the same characteristics as a WAN
with distance constraints.
30. 5. WIDE AREA NETWORK
• A Wide Area Network exist over a large area
• Data travels through telephone or cable lines
• Usually requires a Modem
• The world’s largest Wide Area Network in the Internet
31. 6. STORAGE AREA NETWORK
SAN may be referred to as a Sub network or special purpose network.
Its special purpose is to allow users on a larger network to connect
various data storage devices with clusters of data servers.
SANs can be accessed in the same fashion as a drive attached to a
server.
32. 7. VIRTUAL PRIVATE NETWORK
VPN is a private network that can
access public networks remotely. VPN
uses encryption and security protocols
to retain privacy while it accesses
outside resources.
When employed on a network, VPN
enables an end user to create a virtual
tunnel to a remote location. Typically,
telecommuters use VPN to log in to
their company networks from home.
Authentication is provided to validate the identities of the two peers.
Confidentiality provides encryption of the data to keep it private from
prying eyes.
Integrity is used to ensure that the data sent between the two devices or
sites has not been tampered with.
33. 8. CLIENT/SERVER NETWORK
In a client/server arrangement,
network services are located on a
dedicated computer called a server.
The server responds to the requests
of clients.
The server is a central computer that
is continuously available to respond
to requests from clients for file, print,
application, and other services.
Most network operating systems adopt the form of a client/server
relationship.
Typically, desktop computers function as clients, and one or more
computers with additional processing power, memory, and specialized
software function as servers.
34. 9. PEER TO PEER NETWORK
Usually very small networks
Each workstation has equivalent capabilities and responsibilities
Does not require a switch or a hub.
These types of networks do not perform well under heavy data
loads.
35. NETWORK TOPOLOGIES
Network topology defines the structure of the network.
A. Physical topology:- It define the actual layout of the wire or media.
1. Bus
2. Ring
3. Star
4. Tree(Hierarchical)
5. Mesh
B. Logical topology:- It defines how the hosts access the media to send data.
1. Broadcast
2. Token passing
C. Hybrid Topology
36. 1. BUS TOPOLOGY
T
T
All devices are connected to a central
cable, called bus or backbone.
There are terminators at each end of
the bus that stops the signal and
keeps it from traveling backwards.
Disadvantages:
1. It is possible that more than one station may
attempt transmission simultaneously (collision or
contention).
2. Difficult reconfiguration and fault isolation.
3. A fault or break in the bus cable stops all
transmission, even between devices on the same
side of the problem.
4. The damaged area reflects signals in the direction
of origin, creating noise in both directions
Advantages:
1. There is no central controller.
2. Control resides in each station
3. The less interconnecting wire is
required.
4. Ease of installation.
5. Backbone cable can be laid along the
most efficient path, and then
connected to the nodes by drop lines
of various lengths
37. 2. RING TOPOLOGY
• All devices are connected to one another in the shape
of a closed loop.
• Each device is connected directly to two other devices,
one on either side of it.
Advantages:
1. Avoids the collisions that are possible in the bus topology.
2. Each pair of stations has a point-to-point connection.
3. A signal is passed along the ring in one direction, from device to
another, until it reaches its destination.
4. Each device incorporates a repeater.
5. Relatively easy to install and reconfigure.
6. Fault isolation is simplified.
Disadvantages:
1. A break in the ring (such as station disabled) can disable the entire
network.
2. Unidirectional traffic.
38. 3. STAR TOPOLOGY
• All devices are connected to a central hub.
• Nodes communicate across the network by passing data
through the hub or switch.
Advantages:
1. Easy to install and reconfigure.
2. Robustness, if one link fails; only that link is affected. All other
links remain active.
3. Easy fault identification and isolation. As long as the hub is
working, it can be used to monitor link problems and bypass
defective links.
Disadvantages:
1. The devices are not linked to each other.
2. If one device wants to send data to another, it sends it to the
controller, which then relays the data to the other connected device.
39. 4. TREE/HIERARCHICAL TOPOLOGY
Advantages:
1. It allows more devices to be attached to a
single central hub and can therefore increase
the distance a signal can travel between
devices.
2. It allows the network to isolate and prioritize
communications from different computers.
Disadvantages:
1. The devices are not linked to each other.
2. If one device wants to send data to another,
it sends it to the controller, which then relays
the data to the other connected device.
3. The addition of secondary hubs brings two
further advantages.
40. 6. MESH TOPOLOGY
Each host has its connections to all other hosts.
Mesh topology is implemented to provide as much
protection as possible from interruption of service.
1. A nuclear power plant might use a mesh
topology in the networked control systems.
2. Although the Internet has multiple paths to any
one location, it does not adopt the full mesh
topology.
Disadvantages:
1. A large amount of cabling required.
2. A large amount of I/O ports required.
3. Installation and reconfiguration are
difficult.
4. The sheer bulk of the wiring can be
greater than the available space (in the
walls, ceiling, or floors) can accommodate.
5. The hardware required to connect each
link (I/O ports and cables) can be
prohibitively expensive.
Advantages:
1. The use of dedicated links guarantees that each
connection can carry its data load, thus eliminating
the traffic problems that can occur when links must
be shared by multiple devices.
2. It is robust, if one link becomes unusable, it does
not incapacitate (affect) the entire system.
3. Privacy and Security (every message sent travels
along a dedicated line; only the intended recipient
sees it).
4. Point-to-point links make fault identification and
fault isolation easy.
41. WIRELESS NETWORKS
Wireless network is a type of
computer network that uses
wireless data connections for
connecting network nodes.
Example
Bluetooth
Wi-Fi
42. BLUETOOTH
Bluetooth is a short-range
wireless technology standard
used for exchanging data
between fixed and mobile
devices over short distances.
It is using UHF radio waves in
the ISM bands, from 2.402
GHz to 2.48 GHz.
The IEEE standardized
Bluetooth as IEEE 802.15.1,
but no longer maintains the
standard.
43. WI-FI
Wi-Fi Stands for Wireless Fidelity.
Wi-Fi, is a Local Area Wireless
technology.
Wi-Fi networks use radio technologies to
transmit and receive data at high speed.
It is based on the IEEE 802.11 family of
standards.
Access point: The access point is a wireless
LAN transceiver or “ base station” that can
connect one or many wireless devices
simultaneously to the internet
44. THE INTERNET
The simplest
definition
of the
Internet is
that it's a
network of
computer
networks
How Information Travel Through the Internet
A page on the Internet—whether it's full of words, images or
both—doesn't come to you in one shipment. It's translated
into digital information, chopped into 1500 byte pieces called
PACKETS, and sent to you like a puzzle that needs to be
reassembled. Each part of the packet has a specific
function:
Header
Provides the
complete
destination
address for the
packet
Data Block
The portion of the overall information
carried by the packet
Sequence ID
ID’s where the information
belongs in relation to the rest
of the information
End of Message
ID’s the end of the
packet
45. THE INTERNET
How Information Travel Through the Internet
When you connect to a Web site through an ISP and start exchanging information,
there isn't a fixed connection between your computer and the Web server computer
hosting the Web site. Instead, information is exchanged using the best possible path
at that particular time. Special computers called routers determine these paths,
avoiding slow links and favoring fast ones.
Your
Computer ISP Routers
Web
Servers
46. CLOUD COMPUTING
Cloud computing is Internet-based
computing, whereby shared resources,
software, and information are provided to
computers and other devices on demand, like
the electricity grid.
A Cloud is a type of parallel and distributed
system consisting of a collection of
interconnected and virtualized computers
that are dynamically provisioned and
presented as one or more unified computing
resources based on service-level agreements
established through negotiation between the
service provider and consumers.
47. IAAS
Infrastructure as a Service – IaaS
The capability provided to the consumer is to provision processing,
storage, networks, and other fundamental computing resources
where the consumer is able to deploy and run arbitrary software,
which can include operating systems and applications.
The consumer does not manage or control the underlying cloud
infrastructure but has control over operating systems, storage,
deployed applications, and possibly limited control of select
networking components .
Examples :
Amazon EC2
Eucalyputs
OpenNebula
… etc
48. PAAS
Platform as a Service – PaaS
The capability provided to the consumer is to deploy onto the cloud
infrastructure consumer-created or acquired applications created
using programming languages and tools supported by the provider.
The consumer does not manage or control the underlying cloud
infrastructure including network, servers, operating systems, or
storage, but has control over the deployed applications and possibly
application hosting environment configurations.
Examples :
Microsoft Windows Azure
Google App Engine
Hadoop(High Availability Distributed Object Oriented Platform)
… etc
49. SAAS
Software as a Service – SaaS
The capability provided to the consumer is to use the provider’s
applications running on a cloud infrastructure. The applications are
accessible from various client devices through a thin client interface
such as a web browser (e.g., web-based email).
The consumer does not manage or control the underlying cloud
infrastructure including network, servers, operating systems, storage,
or even individual application capabilities, with the possible exception
of limited user-specific application configuration settings.
Examples :
Google Apps (e.g., Gmail, Google Docs, Google sites, …etc)
50. CLOUD-DEPLOYMENT MODEL
There are four primary cloud deployment models :
1. Public Cloud
2. Private Cloud
3. Community Cloud
4. Hybrid Cloud
Homogeneous
Public Cloud Private Cloud
Infrastructure Homogeneous Heterogeneous
Policy Model Common defined Customized & Tailored
Resource Model Shared & Multi-tenant Dedicated
Cost Model Operational expenditure Capital expenditure
Economy Model Large economy of scale End-to-end control