William Stallings Data and Computer Communications
... UBR May be additional capacity over and above that used by CBR and VBR traffic Not all resources dedicated Bursty nature of VBR ...
... UBR May be additional capacity over and above that used by CBR and VBR traffic Not all resources dedicated Bursty nature of VBR ...
William Stallings Data and Computer Communications
... Reinitialize virtual circuit Sequence numbers set to zero Packets in transit lost Up to higher level protocol to recover lost packets Triggered by loss of packet, sequence number error, congestion, loss of network internal virtual circuit ...
... Reinitialize virtual circuit Sequence numbers set to zero Packets in transit lost Up to higher level protocol to recover lost packets Triggered by loss of packet, sequence number error, congestion, loss of network internal virtual circuit ...
T b - KTH
... output on a 5-point scale • MOS scale is used in a number of specifications as a standard for quality ...
... output on a 5-point scale • MOS scale is used in a number of specifications as a standard for quality ...
Class 4 - Sept. 18-19
... – strong enough to be detected – sufficiently higher than noise to be received without error ...
... – strong enough to be detected – sufficiently higher than noise to be received without error ...
Communication system
... and receive, but not at the same time. When one device is sending, the other can only receive, and vice versa. In full-duplex mode (also called duplex), both devices ...
... and receive, but not at the same time. When one device is sending, the other can only receive, and vice versa. In full-duplex mode (also called duplex), both devices ...
Transmission Media
... Extremely high data rates » More than 100 Mbps for LAN uses » More than 10 times that for telephone company links ...
... Extremely high data rates » More than 100 Mbps for LAN uses » More than 10 times that for telephone company links ...
Chapter 8 - William Stallings, Data and Computer
... - problem of synchronizing various data sources - variation among clocks could cause loss of synchronization - issue of data rates from different sources not related by a ...
... - problem of synchronizing various data sources - variation among clocks could cause loss of synchronization - issue of data rates from different sources not related by a ...
Data Communication & Networking
... Require immediate access to accurate information Database, online shopping ...
... Require immediate access to accurate information Database, online shopping ...
01_02_03_05b-TransmissionOfInformation
... 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320 kbit/s, and the available sampling frequencies are 32, 44.1 and 48 kHz. Additional extensions were defined in MPEG-2 Audio Layer III: bit rates 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160 kbit/s and sampling frequencies 16, 2 ...
... 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256 and 320 kbit/s, and the available sampling frequencies are 32, 44.1 and 48 kHz. Additional extensions were defined in MPEG-2 Audio Layer III: bit rates 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160 kbit/s and sampling frequencies 16, 2 ...
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 ...
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 ...
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. ...
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. ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...