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MINISTRY OF EDUCATION AND SCIENCE OF THE REPUBLIC OF KAZAKHSTAN NUR-MUBARAK

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LECTURE 7

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Слайд 1MINISTRY OF EDUCATION AND SCIENCE
OF THE REPUBLIC OF KAZAKHSTAN
NUR-MUBARAK

EGYPTIAN UNIVERSITY OF ISLAMIC CULTURE

Chair «GENERAL HUMANITARIAN SUBJECTS»
Course
«Information and

communication technologies»

Professor: Candidate of Pedagogical Sciences
ISSABAYEVA SULU
Email: Sulu.74@mail.ru
Mobile phone: 8 707 820 24 37
Office: #107, building 1; #309, building 2.

MINISTRY OF EDUCATION AND SCIENCE OF THE REPUBLIC OF KAZAKHSTAN NUR-MUBARAK EGYPTIAN UNIVERSITY OF ISLAMIC CULTUREChair «GENERAL

Слайд 3LECTURE 7

LECTURE 7

Слайд 4 End devices, communication devices and communication media.
Network

types.
LANs and WANs.
Wired and wireless networking

technologies.
Stack protocols: TCP / IP, OSI.
MAC addressing. IP-addressing.
The DHCP protocol.
Connectivity technology to the Internet.
Telecommunication technologies.

In general in this lecture you will learn about:

End devices, communication devices and communication media. Network types. LANs and WANs. Wired and wireless networking

Слайд 5What is a Network?
A network is two or more computers,

or other electronic devices, connected together so that they can

exchange data.

For example a network allows computers to share files, users to message each other, a whole room of computers to share a single printer, etc.

What is a Network?A network is two or more computers, or other electronic devices, connected together so

Слайд 6What is a Network?

What is a Network?

Слайд 7Computers in a Network
Computers connected together to create a network

fall into two categories: servers and clients (workstations).
Clients
Client computers,

or workstations, are the normal computers that people sit at to get their work done.

Servers
Servers are special, powerful computers that provide ‘services’ to the client computers on the network.

Computers in a Network	Computers connected together to create a network fall into two categories: servers and clients

Слайд 8End devices, communication devices and communication media.
Networks and Telecommunications.

End devices, communication devices and communication media. Networks and Telecommunications.

Слайд 9Networking Hardware
Network Interface Card (NIC)
Any computer that is to be

connected to a network, needs to have a network interface

card (NIC).

Network Cable
To connect together different devices to make up a network, you need cables.

Networking HardwareNetwork Interface Card (NIC)	Any computer that is to be connected to a network, needs to have

Слайд 10Hub
A hub is a device that connects a number of

computers together to make a LAN.
Switch
A switch, like a

hub, is a device that connects a number of computers together to make a LAN.

Networking Hardware

Hub	A hub is a device that connects a number of computers together to make a LAN. Switch	A

Слайд 11Router
A router is a network device that connects together two

or more networks.
Bridge
A bridge is a network device that typically

links together two different parts of a LAN.

Whereas a router is usually used to link a LAN to a WAN (such as the Internet), a bridge links independent parts of a LAN so that they act as a single LAN.
Router	A router is a network device that connects together two or more networks.Bridge	A bridge is a network

Слайд 12Firewall
A firewall is a device, or a piece of software

that is placed between your computer and the rest of

the network (where the hackers are!)

Modem
Before the days of broadband Internet connections, most computers connected to the Internet via telephone lines (dial-up connections).

Proxy Server
A proxy server is a computer setup to share a resource, usually an Internet connection.

Firewall	A firewall is a device, or a piece of software that is placed between your computer and

Слайд 27Wired and wireless networking technologies.
Networks and Telecommunications.

Wired and wireless networking technologies. Networks and Telecommunications.

Слайд 28 Network connections between computers are typically created using cables (wires).


However, connections can be created using radio signals (wireless /

wi-fi), telephone lines (and modems) or even, for very long distances, via satellite links.

Network connections

Network connections between computers are typically created using cables (wires). 	However, connections can be created using radio

Слайд 42Network types.
Networks and Telecommunications.
LANs and WANs.

Network types. Networks and Telecommunications.LANs and WANs.

Слайд 43Local Area Network (LAN)
A Local Area Network is a network

confined to one building or site.
Often a LAN is

a private network belonging to an organization or business.

Wireless Local Area Network (WLAN)
A wireless LAN (WLAN) is a LAN that uses radio signals (WiFi) to connect computers instead of cables.

Wide Area Network (WAN)
A Wide Area Network is a network that extends over a large area. A WAN is often created by joining several LANs together, such as when a business that has offices in different countries links the office LANs together.

Local Area Network (LAN)	A Local Area Network is a network confined to one building or site.

Слайд 45Types of network

Types of network

Слайд 46Types of network

Types of network

Слайд 50Stack protocols: TCP / IP, OSI..
Networks and Telecommunications.
IP-addressing.
The

DHCP protocol.

Stack protocols: TCP / IP, OSI.. Networks and Telecommunications.IP-addressing. The DHCP protocol.

Слайд 61Internet Protocol (IP) and Media Access Control (MAC)
Each device on

the internet is given a unique address known as its

internet protocol (IP) address. This is a 32-bit number that is usually written in the form: 109.108.158.1

Differences between IP addresses and MAC addresses

MAC address is unique number that identifies a device connected to the internet.

The IP address gives the location of a device on the internet, whereas the MAC address identifies the device connected to the internet.

IP-address: 198.162.10.3
Post address: 050036.MAMYR-2.#7.#2

MAC-address: 00:0a:95:9d:68:16.
IIN/ID: 560601302855/012601563

Internet Protocol (IP) and Media Access Control (MAC)Each device on the internet is given a unique address

Слайд 71Connectivity technology to the Internet.
Networks and Telecommunications.
Telecommunication technologies.

Connectivity technology to the Internet. Networks and Telecommunications.Telecommunication technologies.

Слайд 79Thank You

Thank You

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