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provide error correction
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∙ 15y ago
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What can X25 do the Frame Relay cannot do?
There are various differences between X.25 and Frame Relay. The most significant are: 1. Call Control X.25 connection establishment and release (call control) use in-band signaling within the same virtual channel used for user data transmission causing additional overhead. Frame Relay call control uses separate virtual channels identified by reserved DLCI using the LMI (Local Management Interface) protocol. 2. Routing vs. Switching X.25 performs packet switching on OSI layer 3 (network layer); Frame Relay performs packet switching on OSI layer 2 (data-link). Frame Relay does not use any layer 3 protocol. 3. Flow Control Frame Relay (FR) doesn't perform flow control between frame handlers (FR routers). X.25 routers have to acknowledge each frame; in case of frame errors frames have to be retransmitted and acknowledged. Frame Relay relies on flow control performed by higher layer protocols.Source: http://www.synapse.de/ban/HTML/P_LAYER2/Eng/P_lay264.html
Does frame relay operate at layer 3 of the OSI model?
No. Frame Relay is not operating at Layer 3. Frame Relay is strictly a Layer 2 protocol suite, whereas X.25 provides services at Layer 3 (the network layer) as well. This enables Frame Relay to offer higher performance and greater transmission efficiency.
What are the advantages of Frame Relay over x25?
Advantages of frame relay over x.25?Frame relay operates at a higher speed(1.544 mbps & currently 44.376mbps) By this it can easily be used instead of a mesh of T-1 or T-3 linesFrame relay operates in just the physical and data link layers. By this it is used as a back bone nwtwork to provide services to protoclols that already have a network layer protocol.It allows brusty data. in case of x.25 and t-line there is a fixed data rateFrame relay allows a frame size of 9000 bytes, which can accommodate all LAN framesFrame relay is less expensive than other traditional WAN
What is x in the problem x plus 25?
x + 25 is an expression. An expression cannot be solved and there is no problem.
Difference between ATM and frame relay?
ATM as well as frame relay are switched WANs. Frame relay protocol was designed to replace X.25 . ATM is advantageous as it is a cell network and a cell network uses the cell as a basic unit of data exchange and are small and fixed size block of information .
Which signaling is used in telecom?
More information needed. Telecoms use FSK, PSK, and QAM, with A/D and D/A such as PCM, APCM, Delta and Delta-Sigma. They also use X.25, Frame Relay, ATM, SONET and TCP/IP.
Which WAN technology operates at Layer 3 of the OSI model?
Which? Where are the Options?WAN Technologies operate & involve Layer1, Layer2 & Layer3 of OSI Model. Example of WAN Technology Protocols are Frame Relay, ATM & X.25 protocols.
What replaced X25?
X.25 was primarily replaced by newer networking technologies like Frame Relay and later on, IP-based protocols such as ATM (Asynchronous Transfer Mode). These technologies offered higher data transmission speeds and more efficient networking capabilities, making them more suitable for modern networking requirements.
What is the GCD for 60 and 25?
There cannot be a greatest common denominator. For suppose X were the greatest common denominator. That means X is a multiple of 60 and 25 and that X is the greatest such number. Consider 2X. If X is a multiple of 60 and 25 then 2X will certainly be a multiple of the two numbers and 2X will also be greater than X. But that contradicts the proposition that X is the greatest such number. That contradiction shows that there cannot be a GCD for 60 and 25. The argument can easily be generalised to prove that there cannot be a GCD for any set of numbers.
What x minus 25?
It is an algebraic expression which cannot be simplified nor evaluated.
If a 25 in by 32 in picture has a wooden frame x in wide surrounding it which equation can be used to find the total area of the picture and frame?
The frame is at each side of the picture so the area is (25 + 2x) times (32 + 2x), (which multiplies out to 4x^2 + 114x + 800 square inches). ie if the frame is an inch and a half wide then the area is 28 x 35 sq ins, ie 980 sq ins.
What are all of the real or complex numbers that are solutions to the equation x2-25?
x2 - 25 = 0 is x2 = 25 thus x = 5 or x = -5, only 2 real solutions
