3.0 PERKHIDMATAN RANGKAIAN

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Elijah Wilkins
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1 3.0 PERKHIDMATAN RANGKAIAN SSK 2023 ASAS KOMUNIKASI DAN RANGKAIAN Minggu ke- 7

2 KEHENDAK SILIBUS 1.3 Menerangkan lapisan Model TCP/IP dan fungsi, protokol dan perkakasan setiap lapisan : a. Application Layer b. Transport Layer c. Internet Layer d. Network Access Layer 1.4 Menerangkan perbezaan Model OSI dengan Model TCP/IP 1.5 Menerangkan nombor port yang digunakan untuk komunikasi client/server yang berbeza seperti : a. HTTP b. HTTPS c. FTP d. POP3 e. SMTP f. DNS Sage-Fox.com Free PowerPoint Temp

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4 Standard komunikasi data yang digunakan di dalam jaringan antara satu komputer dengan satu komputer lain untuk berhubung 4 lapisan TCP / IP Lapisan Aplikasi (Lapisan OSI: Application & Presentation & Session) Lapisan penghantaran (Lapisan OSI: Transport) Lapisan internet (Lapisan OSI: Network) Lapisan Media Rangkaian(Lapisan OSI : Data Link & physical) 4

5 Memberikan servis kepada pengguna jaringan seperti telnet, FTP, HTTP, SNMP dah sebagainya Berfungsi untuk mewujudkan komunikasi antara dua komputer (melibatkan TCP dan UDP) Bertanggungjawab dalam proses pengiriman data ke alamat yang tepat, routing datagram ke remote host Berfungsi menyediakan sistem untuk mengirim dan menerima data dari fizikal media 5

6 TCP/IP reference model does not discuss these layers too much the node should connect to the network with a protocol such that it can send IP packets this protocol is not defined by TCP/IP mostly in hardware a well known example is Ethernet 6

Connectionless, point to point internetworking protocol (uses the datagram approach) takes care of routing across multiple networks each packet travels in the network independently of each other o

7 Connectionless, point to point internetworking protocol (uses the datagram approach) takes care of routing across multiple networks each packet travels in the network independently of each other o they may not arrive (if there is a problem in the network) o they may arrive out of order a design decision enforced by DoD to make the system more flexible and responsive to loss of some subnet devices Implemented in end systems and routers as the Internet Protocol (IP) 7

8 End-to-end data transfer Transmission Control Protocol (TCP) connection oriented reliable delivery of data ordering of delivery User Datagram Protocol (UDP) connectionless service delivery is not guaranteed Can you give example applications that use TCP and UDP? 8

9 UDP Anything where you don't care too much if you get all data always Tunneling/VPN (lost packets are ok - the tunneled protocol takes care of it) Media streaming (lost frames are ok) Games that don't care if you get every update Local broadcast mechanisms (same ) application running on different machines "discovering" each other World Wide Web(HTTP) (SMTP TCP) File Transfer Protocol (FTP) Secure Shell (SSH) TCP Almost anything where you have to get all transmitted data Web SSH, FTP, telnet SMTP, sending mail IMAP/POP, receiving mail Domain Name System (DNS) Streaming media applications such as movies Online multiplayer games Voice over IP (VoIP) Trivial File Transfer Protocol (TFTP) 9

10 Support for user applications A separate module for each different application e.g. HTTP, SMTP, telnet 10

11 - PROTOCOLS 11

12 OSI VS TCP/IP- HISTORY OSI The Open Systems Interconnection, or OSI, model is a standard reference model created by the International Organization for Standardization to describe how the different software and hardware components involved in a network communication should divide labor and interact with one another. It defines a seven-layer set of functional elements, ranging from the physical interconnections at Layer 1 -- also known as the physical layer, or PHY interface -- all the way up to Layer 7, the application layer. TCP/IP Separately from the OSI model, TCP and IP are two of the network standards that define the internet. IP defines how computers can get data to each other over a routed, interconnected set of networks. TCP defines how applications can create reliable channels of communication across a network. IP basically defines addressing and routing, while TCP defines how to have a conversation across the link without garbling or losing data. TCP/IP grew out of research by the U.S. Department of Defense and is based on a loose, rather than strict, approach to network layering. 12

13 OSI VS TCP/IP MAJOR DIFFRENCES Contain 7 layers OSI Uses Strict Layer resulting in vertical layers Supports both connectionless & connection-oriented communication in the Network Layer, but only connectionoriented communication in Transport layer Protocols are better hidden and can be replaced relatively easily as technology changes (no transparency) Contain 4 layers TCP/IP Users Loose Layering resulting in horizontal layers Supports only connectionless communication on the Network Layer, but both connectionless & connection oriented communication in Transport Layer Protocols are not hidden and thus cannot be replaced easily (transparency ) 13

PORT NUMBER 80- HTTP (Hyper Text Transfer Protocol) Digunakan dalam aplikasi web 443- HTTPS ~ also called HTTP over TLS, HTTP over SSL, and HTTP Secure) is a protocol for secure communication over a

14 PORT NUMBER 80- HTTP (Hyper Text Transfer Protocol) Digunakan dalam aplikasi web 443- HTTPS ~ also called HTTP over TLS, HTTP over SSL, and HTTP Secure) is a protocol for secure communication over a computer network which is widely used on the Internet POP3 (Post Office Protocol) ~ Incoming Messages Digunakan untuk menguruskan 25- SMTP (Simple Mail Transfer Protocol) ~ Outgoing Messages Digunakan untuk menguruskan 53- DNS (Domain Name Services) Perkhidmatan Domain (File Transfer Protocol) Download dan Upload fail di internet 21- FTP 23- Telnet Terminal untuk melaksanakan arahan di dalam server Sage-Fox.com Free PowerPoint Temp

15 REFERENCES MODUL SKS 3114 PENTADBIRAN RANGKAIAN JPKK MODUL SKS 3114 PENTADBIRAN RANGKAIAN KKBD VERSI JULAI 2016 WIKI SEARCHNETWORKING.TECHTARGET WEBOPEDIA TECHOPEDIA

1.0 PERKHIDMATAN RANGKAIAN (CLO 1)

1.0 PERKHIDMATAN RANGKAIAN (CLO 1) SSK 3023 PENTADBIRAN RANGKAIAN VERSI KKBD MAC 2017 KEHENDAK SILIBUS 1.1 Menerangkan tentang konsep rangkaian : a. Model Open System Interconnect (OSI) b. Model Transmission