Author Topic: Framing  (Read 707 times)

zenin

  • Blue Belt
  • ****
  • Posts: 126
  • Karma: +1/-0
Framing
« on: September 01, 2013, 01:55:09 AM »
Hello,

What is Framing?

silgy

  • Green Belt
  • *****
  • Posts: 224
  • Karma: +1/-0
Re: Framing
« Reply #1 on: September 02, 2013, 01:37:10 AM »
Hello ZENIN..........

In computer networking and telecommunication, a frame is a digital data transmission unit that includes frame synchronization, i.e. a sequence of bits or symbols making it possible for the receiver to detect the beginning and end of the packet in the stream of symbols or bits. If a receiver is connected to the system in the middle of a frame transmission, it ignores the data until it detects a new frame synchronization sequence.

In computer networking, a frame is a data packet on the Layer 2 of the OSI model.[1] A frame is "the unit of transmission in a link layer protocol, and consists of a link-layer header followed by a packet.


Thanks
Silgy

rahesh.datasoft

  • Blue Belt
  • ****
  • Posts: 175
  • Karma: +0/-0
Re: Framing
« Reply #2 on: September 08, 2013, 07:11:54 PM »
hai


Framing is the process of dividing bit stream of information into logical groups of equal size. Framing is done both with asynchronous communication and synchronous communication. In asynchronous communication, the sender is responsible for breaking up the continues bit stream generated into frames and send these frame on the communication medium after regular gaps in time. In synchronous communication, the receiver is responsible for dividing the continues bit stream from communication channel into logical frames. The efficiency of communication has a great impact of the properties on ht e frames.

jamal

  • Blue Belt
  • ****
  • Posts: 192
  • Karma: +0/-0
Re: Framing
« Reply #3 on: October 11, 2013, 03:23:34 AM »
hi


How do I give my computer a static local IP address?




thansk

prakash.datasoft

  • Green Belt
  • *****
  • Posts: 295
  • Karma: +0/-0
Re: Framing
« Reply #4 on: October 11, 2013, 03:26:26 AM »
hello sir


 If you are using a router to share your Internet connection with more than one computer in your home, or to achieve wireless Internet access (WiFi), congratulations! Your computers are protected from several common threats. That's because other computers on the Internet can't directly connect to your computers -- the router won't let them.


thanks
prakash
datasoft

rahesh.datasoft

  • Blue Belt
  • ****
  • Posts: 175
  • Karma: +0/-0
Re: Framing
« Reply #5 on: October 21, 2013, 06:57:24 AM »
hello


Since the physical layer merely accepts and transmits a stream of bits without any regard to meaning or structure, it is upto the data link layer to create and recognize frame boundaries. This can be accomplished by attaching special bit patterns to the beginning and end of the frame. If these bit patterns can accidentally occur in data, special care must be taken to make sure these patterns are not incorrectly interpreted as frame delimiters


Thanks.

rahesh.datasoft

  • Blue Belt
  • ****
  • Posts: 175
  • Karma: +0/-0
Re: Framing
« Reply #6 on: March 04, 2014, 01:54:48 AM »
hai

Setting a LAN PC to a non-changing IP address is the practical way to insure it will never change. Many consider this a good idea if you are using Port Forwarding or DMZ.

Here's the info you need. This info assumes the LinkSys is at default settings:

1.) Select a unique IP for the PC of 192.168.1.# where # is in the range 2-99 or 150-254 (this avoids any conflict with the default DHCP address range of 100-149). Example: 192.168.1.5

2.) Obtain 1 or more (typically 2) DNS server addresses you can use. Your ISP usually defines these or find them at the Status tab in the LinkSys setup.

Note: Some successfully use a DNS server of 192.168.1.1, the LinkSys LAN address. The LinkSys has an undocumented DNS-proxy built in so use this at your own risk.

3.) Operating systems vary. Most Windows PCs can use Control Panel to get to network settings (example: "Network and Dialup Connections" then "Local Area Connection" then "Properties"). Navigate to the settings for "TCP/IP" (example: "Internet Protocol (TCP/IP)").

4.) Change from "Obtain an IP address automatically" to "Use the following IP address". Enter these values (all are important and exact wording may vary):

* IP address: 192.168.1.# (from step 1.)
* Subnet Mask: 255.255.255.0
* Default Gateway: 192.168.1.1
* DNS servers: (from step 2.)

5.) Be sure and click "OK" as needed. You may be asked to reboot.


Thanks

santhoshidatasoft

  • Brown belt
  • ******
  • Posts: 668
  • Karma: +0/-0
Re: Framing
« Reply #7 on: March 08, 2014, 09:47:24 AM »
Hello,

1) In telecommunications, a frame is data that is transmitted between network points as a unit complete with addressing and necessary protocol control information. A frame is usually transmitted serial bit by bit and contains a header field and a trailer field that "frame" the data. (Some control frames contain no data.)

Here is a simple representation of a frame, based on the frame used in the frame relay access standard:

 

-----------Header-------       ----------Trailer---------
Flag
(01111110)   Address field   Information (data) field
(0-4096 bytes)   Frame check sequence   Flag
(01111110)
In the figure above, the flag and address fields constitute the header. The frame check sequence and second flag fields constitute the trailer. The information or data in the frame may contain another encapsulated frame that is used in a higher-level or different protocol. In fact, a frame relay frame typically carries data that has been framed by an earlier protocol program.

2) In time-division multiplexing (TDM), a frame is a complete cycle of events within the time division period.

3) In film and video recording and playback, a frame is a single image in a sequence of images that are recorded and played back.

4) In computer video display technology, a frame is the image that is sent to the display image rendering devices. It is continuously updated or refreshed from a frame buffer, a highly accessible part of video RAM.

5) In artificial intelligence (AI) applications, a frame is a set of data with information about a particular object, process, or image. An example is the iris-print visual recognition system used to identify users of certain bank automated teller machines. This system compares the frame of data for a potential user with the frames in its database of authorized users.