Serial Communications
... Serial Communications describes a general way in which two devices can send or receive data from one another To send or receive data, bits have to be moved around The term Serial indicates that the data bits are transmitted sequentially, one bit at a time Conversely, in parallel communication, mult ...
... Serial Communications describes a general way in which two devices can send or receive data from one another To send or receive data, bits have to be moved around The term Serial indicates that the data bits are transmitted sequentially, one bit at a time Conversely, in parallel communication, mult ...
phys-layer-interface..
... ‘framing’ each block. • Does not involve extra start-stop bits • But, may involve special characters or special strings to delimit each block • Hence, transmission are synchronized on blocks rather than characters ...
... ‘framing’ each block. • Does not involve extra start-stop bits • But, may involve special characters or special strings to delimit each block • Hence, transmission are synchronized on blocks rather than characters ...
The Link Layer
... • All parity bits are calculated like this: binary addition of the message bits they check, with no carry • Possible to detect single-bit and double-bit errors • Possible to recover from single-bit errors • See Hamming lecture (will be linked on calendar) for ...
... • All parity bits are calculated like this: binary addition of the message bits they check, with no carry • Possible to detect single-bit and double-bit errors • Possible to recover from single-bit errors • See Hamming lecture (will be linked on calendar) for ...
Management Information Systems
... a computer system and among computers. Be able to identify the major media and devices that are used in telecommunications. ...
... a computer system and among computers. Be able to identify the major media and devices that are used in telecommunications. ...
Basic Communications Theory
... end : radio pager. • Half duplex: Both parties can send and receive information from the other end but not at the same time: walkie talkie. • Full duplex: Both parties can send and receive information at the same time: computer to computer communication ...
... end : radio pager. • Half duplex: Both parties can send and receive information from the other end but not at the same time: walkie talkie. • Full duplex: Both parties can send and receive information at the same time: computer to computer communication ...
RS-232 Communications
... RS-232 was designed with the understanding that the analog world is far from perfect. Digital is fast, analog is slow. RS-232 is analog, therefore is it slow (in computing ...
... RS-232 was designed with the understanding that the analog world is far from perfect. Digital is fast, analog is slow. RS-232 is analog, therefore is it slow (in computing ...
CMPE 150 – Spring 06
... • Data Element (a single binary “1”, “0”) • Data Rate (rate data elements get transmitted) • Signal Element (part of signal that occupies shortest interval of signaling code) • Signaling or Modulation rate (rate signal elements are transmitted ...
... • Data Element (a single binary “1”, “0”) • Data Rate (rate data elements get transmitted) • Signal Element (part of signal that occupies shortest interval of signaling code) • Signaling or Modulation rate (rate signal elements are transmitted ...
IS- 162 Final Exam Winter 2011
... 1. A more efficient header, better security, better prioritization 2. Typically read out as colon separated Hex numbers ...
... 1. A more efficient header, better security, better prioritization 2. Typically read out as colon separated Hex numbers ...
High-speed digital telecommunications networks that are national or
... – Telephone lines used by a computer to send data ...
... – Telephone lines used by a computer to send data ...
Tutorial 1 Answers
... a. Mesh topology: If one connection fails, the other connections will still be work- ing. b. Star topology: The other devices will still be able to send data through the hub; there will be no access to the device which has the failed connection to the hub. c. Bus Topology: All transmission stops if ...
... a. Mesh topology: If one connection fails, the other connections will still be work- ing. b. Star topology: The other devices will still be able to send data through the hub; there will be no access to the device which has the failed connection to the hub. c. Bus Topology: All transmission stops if ...
CSC 335 Data Communications and Networking I
... • Data represented by changes rather than levels • More reliable detection of transition rather than level • In complex transmission layouts it is easy to lose sense of polarity ...
... • Data represented by changes rather than levels • More reliable detection of transition rather than level • In complex transmission layouts it is easy to lose sense of polarity ...
Medium Access Control (MAC)
... microseconds (at 10 Mbps) to allow the signal to propagate through the receiver electronics at the destination. This period of time is known as the Inter-Frame Gap (IFG). While every transmitter must wait for this time between sending frames, receivers do not necessarily see a "silent" period of 9.6 ...
... microseconds (at 10 Mbps) to allow the signal to propagate through the receiver electronics at the destination. This period of time is known as the Inter-Frame Gap (IFG). While every transmitter must wait for this time between sending frames, receivers do not necessarily see a "silent" period of 9.6 ...
k L
... correcting codes with a wide range of applications in digital communications and storage. ReedSolomon codes are used to correct errors in many systems including: – Storage devices (including tape, Compact Disk, DVD, barcodes, etc) – Wireless or mobile communications (including cellular telephones, m ...
... correcting codes with a wide range of applications in digital communications and storage. ReedSolomon codes are used to correct errors in many systems including: – Storage devices (including tape, Compact Disk, DVD, barcodes, etc) – Wireless or mobile communications (including cellular telephones, m ...
Chapter 1
... the rising edge • The transition from 1 to 0 is called the falling edge • Signals change as time progresses, and this is what enables the flow of data ...
... the rising edge • The transition from 1 to 0 is called the falling edge • Signals change as time progresses, and this is what enables the flow of data ...
doc - EECS: www-inst.eecs.berkeley.edu
... 3.3 Simple Example Consider a 100-Mbps optical link with a length of 10km. Assume the link transmits packets of 10000 bits. (The speed of light is 2x108 m/sec). From the start of a packet transmission until the last bit of the packet arrives at the receiver, it takes how much time? Latency = Transmi ...
... 3.3 Simple Example Consider a 100-Mbps optical link with a length of 10km. Assume the link transmits packets of 10000 bits. (The speed of light is 2x108 m/sec). From the start of a packet transmission until the last bit of the packet arrives at the receiver, it takes how much time? Latency = Transmi ...
Lecture 4a: Communication and Networking
... Throttles the sender to a rate that allows the receiver to keep up and handle all traffic ...
... Throttles the sender to a rate that allows the receiver to keep up and handle all traffic ...
ALevelComputing_Session13
... These rules will include that method of transmission (serial or parallel, the bit rate, transmission modes (simplex, duplex, half) and error checking. If using parity both computers would need to be using even parity or odd. If there are any differences to any of these rules then messages would be n ...
... These rules will include that method of transmission (serial or parallel, the bit rate, transmission modes (simplex, duplex, half) and error checking. If using parity both computers would need to be using even parity or odd. If there are any differences to any of these rules then messages would be n ...
CS447_Spring2002_Rea..
... 1. Whichever host that has "a token" can transmit data (data as a packet). 2. If a host finishes transmitting a packet, the host has to wait for the transmitted packet to come back on the ring. 3. Then the host removes the transmitted packet. 4. When a transmitting host completely receives the packe ...
... 1. Whichever host that has "a token" can transmit data (data as a packet). 2. If a host finishes transmitting a packet, the host has to wait for the transmitted packet to come back on the ring. 3. Then the host removes the transmitted packet. 4. When a transmitting host completely receives the packe ...
幻灯片 1 - Computer Science Department @ University of
... demodulation functions, digital communication also requires timing control. It is necessary to introduce a clock in signal transmission is obvious if we look at Fig. ...
... demodulation functions, digital communication also requires timing control. It is necessary to introduce a clock in signal transmission is obvious if we look at Fig. ...
Technical Report
... (about the same as a T-3 line) to 2.48 Gbps. for Optical Carrier, used to specify the speed of fiber optic networks conforming to the SONET standard. The table shows the speeds for common OC levels. ...
... (about the same as a T-3 line) to 2.48 Gbps. for Optical Carrier, used to specify the speed of fiber optic networks conforming to the SONET standard. The table shows the speeds for common OC levels. ...
Ultralink/Ultrawire Downhole Controller
... converter (switch mode power supply) to convert the high voltage on the Ultralink line to power the Ultrawire toolbus. In its capacity as a logging controller, the XTU polls each tool on the tool string for its data packet and assembles these data packets into frames for uplink to the surface. The s ...
... converter (switch mode power supply) to convert the high voltage on the Ultralink line to power the Ultrawire toolbus. In its capacity as a logging controller, the XTU polls each tool on the tool string for its data packet and assembles these data packets into frames for uplink to the surface. The s ...
cs2302 computer networks
... Here every device has a dedicated point to point link to every other device. A fully connected mesh can have n(n-1)/2 physical channels to link n devices. It must have n-1 IO ports. Figure: Mesh Topology Advantages: 1. They use dedicated links so each link can only carry its own data load. So traffi ...
... Here every device has a dedicated point to point link to every other device. A fully connected mesh can have n(n-1)/2 physical channels to link n devices. It must have n-1 IO ports. Figure: Mesh Topology Advantages: 1. They use dedicated links so each link can only carry its own data load. So traffi ...
