LAYER OSI ( OPEN SYSTEM INTERCONNECTION )

LAYER OSI ( OPEN SYSTEM INTERCONNECTION )

  23:52:00    Blogsepat

---

OSI ( OPEN SYSTEM INTERCONNECTION )

    Memabahas kali ini adalah untuk LAYER OSI .... OSI sendiri menggunakan layer ( lapisan ) untuk menentukan berbagai macam fungsi dan operasi sistem komunikasi data . OSI menggunakan tujuh lapisan dimana tiap lapisan berdiri sendiri tetapi fungsi dari masing2 tsb berbeda ..
Tiga layer teratas dikenal sebagai user atau Orientasi layer aplikasi ( applikation oriented layer ), umumnya berkaitan dengan sambungan atar perangkat lunak dan pemberian akses untuk mendapatkan data yang ada dalam jaringan.

7). PHYSICAL LAYER

Berfungsi untuk mendefinisikan media transmisi jaringan, metode pensinyalan, sinkronisasi bit, arsitektur jaringan, topologi jaringan dan pengabelan. Adapun perangkat-perangkat yang dapat dihubungkan dengan Physical layer adalah NIC (Network Interface Card) berikut dengan Kabel - kabelnya.

6). DATA LINK LAYER 

 

 

Befungsi untuk menentukan bagaimana bit-bit data dikelompokkan menjadi format yangdisebut sebagai frame. Pada Layer ini terjadi koreksi kesalahan, flow control, pengalamatan perangkat keras seperti Halnya MAC Address, dan menetukan bagaimana perangkat-perangkat jaringan seperti HUB, Bridge, Repeater, dan Switch layer 2 (Switch un-manage) beroperasi. Spesifikasi IEEE 802, membagi Layer ini menjadi dua Layer anak, yaitu lapisan Logical Link Control (LLC) dan lapisan Media Access Control (MAC).

5). NETWORK LAYER

Berfungsi untuk mendefinisikan alamat-alamat IP, membuat header untuk paket-paket, dan kemudian melakukan routing melalui internetworking dengan menggunakan Router dan Switch layer-3 (Switch Manage).

4). TRANSPORT LAYER

Protocol ini berurusan dengan pemilihan jenis jaringan yang akan digunakan untuk suatu komunikasi tertentu. Layer ini merupakan layer terendah dimana protocol bekerja secara end-to-end untuk memberikan kehandalan yang diinginkan dan sifat transparasi pengiriman data data diantara dua terminal. Layer inilah yang bertanggung jawab untuk meyakinkan bahwa sebuah pesan sampai pada alamat yang dituju.

3). SESSION LAYER 

Layer ini berfungi mengatur bagaimanapelaksanaan pertukaran data dilakukan. Layer ini juga bertanggung jawab untuk sambungan antara dua end user yaitu mengatur agar dua aplikasi dapat saling menukar data.

2). PRESENTATION LAYER 

 Layer tersebut meyakinkan bahwa pesan yang diterima oleh semua terminal dapat dimengerti oleh terminal tersebut. Berarti Layer ini berurusan dengan pemilihan dan penentuan struktur kode dan berbagai perubahan format, kode, bahasa, dan kecepatan pengiriman.

3). APPLICATION LAYER

 Layer ini berfungsi mengatur segala sesuatu yang berhubungan dengan pertukaran data atau informasi antar pemakai, software aplikasi, atau peralatan sistem komputer. Layer ni melayani berbagai protocol yang umumnya diperlukan.

ssemoga bermanfaa..
maaf bila ada yang salah dalam menulis artikel tersebut......
good luck :DDDD


info kampusku : www.amikom.ac.id




 

 

Read More

COMPONENTS HARDWARE LAPTOP

COMPONENTS HARDWARE LAPTOP

  01:12:00    Blogsepat

---

COMPONENTS HARDWARE IN LAPTOP 

 Hai sob :D ... Today i will discuss about components that is in a laptop or computer.... let us take equally anything components that is in laptop.... this heee.....


1. MOTHERBOARD/MAINBOARD

Mainboard or commonly called motherboard is a component laptop that servers as a component to put important component, as: processor, file cable, memory, dll......
   Now the part - Motherboard part of the laptop is :
1). Socket/Slot Processor.

2). BIOS ( Basic Input/Output System ).

3). Slot Ekspansi.

4). Slot RAM.

5). Connector.

2. PROCESSSOR 

Processor is central or brain control of a devise other. Or dare i say the brain of a cmputer. Process is its important of a computer. If processor no of a computer or laptop ? Of cours laptop or computer cannot function at all.
Processor have a sort of diverse,,,,, often used in laptop usually AMD or INTEL.


3. TOUCHPAD

Touchpad serves as control cursor lmost the same as mouse but the touchpad is integrated with the laptop. Mouse can also added if necessary if according to you use the touchpad much more troublesome :D:D:D...


4. KEYBOARD

A Function of a keybord is bring up character letters on the screen. The form of from a keyboard laptop is different with a keyboard pc computer in generally because it forms keyboard laptop in one part from the laptop itself.









5. CHARGER/ADAPTOR

 Charger Function as a link between laptop in electricity. When laptop were sold out the battery it can be in rechargeable to use charger.










6. BATTERY

Battery in laptop function as the depository of electrical power that laptop can live. But the could not last long probably about 3 to 6 hours, depends specification.





7. WIRELESS NETWORK CARD ( WI-FI ).
            
This device function as a link the internet without cable or commonly called wifi. If this instrument is not insstalled in laptop so outomatic wifi will not be able to connect.







8. COOLING FAN.

A function of lat this is as a coolant laptop/ could be called as a fan processor .... If the only tool this dead or not attached so the latop will be in a state of heat and next the system will be dead by it self ...







Maybe this is it that be to talk to you about sa ... hopefully useless: if there is writing / said a word that is lacking is pleased, Me as the admin apologized as of the size of the. :D:D:D:D:D

info kampusku : www.amikom.ac.id

Read More

FILE STORAGE PLACE

FILE STORAGE PLACE

  01:11:00    Blogsepat

---

FILE STORAGE PLACE

      okke bro,,, Direct the course, i will make discusses file storage inside the computer.
In a computer there are whose name HARDWARE. HARDWARE is a component that can be touched physically, in contrast with SOFTWARE. SOFTWARE in a component that is in on computers not seen physically, example: operating system and application.

Wooke just we have discussed and file storage on a computer ,, of course hardware yesss,,, hehe... 

1. HARD DISK DRIVE 

    



A Picture above are examples a hard disk laptop ukuranya somewhat smaller as picture below....,,,,

Hard disk located in the CPU, if laptop so there were in laptop :P, finction of a hardisk alone is to keep all file input ( key in ) on a computer. Capacity a Harddisk various kinds of starting from 80 GB, 120 GB, 160 GB, 250 GB, 320 GB, 500 GB, some even to 1TB to 4 TB

2. CD or DVD ROM

A picture besides is CD ROM pc computer, While CD ROM laptop ukuranya smaller as the picture at the bottom this:

 In every computer there are whosename CD ROM or DVD ROM. Although its shape equal DVD ROM and CD ROM but has a different, CD ROM only can read puck reading CD-RW ad DVD ROM spans multi function can read puck CD-RW and DVD-RW file and copy of a computer to the puck CD or DVD empty. Want to chosen Which ?



3. FLASHDISK

Maybe this time there have been many once a user FLASHDISK, make because flashdisk own classified as very practical and can are transpoted anywhere, in addition too are many on sale in the market. FLASHDISK is a place of file storage having the character of a removable ( easy to ) on the movie. Capacity for flashdisk it self is also very kinds of various -- ranging from 2 GB, 4 GB, 8 GB, 16 GB, 32 GB, 64 GB, 128 GB, up to 1 TB. Delivery file faster equal to harddisk compered with pieces of the cd.


4. DISKET ( jadul ) :P :D

A suitable or in english called floopy disk is an instrument file storage in the 90an until the year of 2000an. Only 1,44 MB capacity.

Woow as for place data storage or memory temporary :

RAM dan ROM

RAM besides is a RAM in a computer pc,,, While RAM laptop found in the picture at the bottom this :

Funcion of RAM wa to accelerate the file processing computer. The higher capasity a RAM used the fast too the computer. While ROM is a storage firmware or often called as software, that directly touch hardware. Example : ROM BIOS as the picture at the bottom this :

wookke probably enough the article of me about the safe computer file,,,, may benefit ..... assalamualaikum :DDDDDD  :PP

info kampusku : www.amikom.ac.id

Read More

RESTORE THE FILE THAT IS IN HIDDEN THE VIRUS

RESTORE THE FILE THAT IS IN HIDDEN THE VIRUS

  01:10:00    Blogsepat

---

A WAY TO RETURN THE FILE IN HIDDEN VIRUS

The file are in flashdisk suddenly become lost or no, this usually is not lost, but virus who conceals it ( hidden ). To appears back the file, can use methods below:

1). Open Command Prompt click Start - Run - CMD - OK.

 2). Type DIR ( see if directory sought has already appeared ), if they have not been type DIR/A ( refer to the directory sought after ).

3). Type directory flashdisk ( D: or C: and so on ) - click ENTER

4). Close Command Prompt with typing EXIT.
5). Open FLASHDISK and check the files contained in it, to see that the file is back and the virus that infects not active anymore and can be deleted manually.

Maybe this is it an article that i mentioned ..... hopefully useful,,,,,,,, :D......

info kampusku : www.amikom.ac.id

Read More