WAN_Unit_2
... Packet-switching allows multiple users to share data-network facilities and bandwidth, rather than providing specific amounts of dedicated bandwidth to each user. The traffic passed by packet-switched networks is “bursty” in nature, and therefore can be aggregated statistically to maximize the use o ...
... Packet-switching allows multiple users to share data-network facilities and bandwidth, rather than providing specific amounts of dedicated bandwidth to each user. The traffic passed by packet-switched networks is “bursty” in nature, and therefore can be aggregated statistically to maximize the use o ...
Selling an Idea or a Product
... state (e.g., system tables), centralized control, limited connectivity, and need for consistent “global” state. ...
... state (e.g., system tables), centralized control, limited connectivity, and need for consistent “global” state. ...
01-Overview
... established for duration of conversation comprising a sequence of physical links with a dedicated logical channel eg. telephone network ...
... established for duration of conversation comprising a sequence of physical links with a dedicated logical channel eg. telephone network ...
3rd Edition: Chapter 2 - Northwestern Networks Group
... m Information transmitted by any node is received by every other node in the network • Examples: usually in LANs (Ethernet) ...
... m Information transmitted by any node is received by every other node in the network • Examples: usually in LANs (Ethernet) ...
lecture2
... – Large networks (lots of hosts, many of which are unreachable until configured!) – Configuration process error prone • Every host needs correct network number • No two hosts can have same IP address ...
... – Large networks (lots of hosts, many of which are unreachable until configured!) – Configuration process error prone • Every host needs correct network number • No two hosts can have same IP address ...
Introduction - Staffordshire University
... medium to provide services must be governed by rules • The format or structure of the message • The method by which networking devices share information about pathways with other networks • How and when error and system messages are passed between devices • The setup and termination of data transfer ...
... medium to provide services must be governed by rules • The format or structure of the message • The method by which networking devices share information about pathways with other networks • How and when error and system messages are passed between devices • The setup and termination of data transfer ...
Lecture 1 Introduction
... Week 10: P2P and overlay network Week 11: Mobile & wireless network Week 12: Network security ...
... Week 10: P2P and overlay network Week 11: Mobile & wireless network Week 12: Network security ...
6 Lecture 6 Intro to Switching & Circuit Switching
... not as efficient as the other two types of networks because resources are allocated during the entire duration of the connection. These resources are unavailable to other connections. In a telephone network, ...
... not as efficient as the other two types of networks because resources are allocated during the entire duration of the connection. These resources are unavailable to other connections. In a telephone network, ...
No Slide Title
... Real Time Multimedia has the following advantages for Distance Learning : * Liveliness * Efficiency * Interactivity ...
... Real Time Multimedia has the following advantages for Distance Learning : * Liveliness * Efficiency * Interactivity ...
IP Routing
... to dynamically find all the networks in the internetwork, as well as to ensure that all routers have the same routing table. Ex: RIP, OSPF ...
... to dynamically find all the networks in the internetwork, as well as to ensure that all routers have the same routing table. Ex: RIP, OSPF ...
Chapter 10 Circuit and Packet Switching
... Virtual Circuits v Datagram • Virtual circuits —Network can provide sequencing and error control —Packets are forwarded more quickly • No routing decisions to make ...
... Virtual Circuits v Datagram • Virtual circuits —Network can provide sequencing and error control —Packets are forwarded more quickly • No routing decisions to make ...
Chapter 1 Lecture Presentation
... Networks and Services Telephone Networks and Circuit Switching ...
... Networks and Services Telephone Networks and Circuit Switching ...
Assignment Group A1
... depending on how the network switches are configured, placed, etc. On wireless networks, packet sniffers can usually only capture one channel at a time unless the host computer has multiple wireless interfaces that allow for multichannel capture. Once the raw packet data is captured, the packet snif ...
... depending on how the network switches are configured, placed, etc. On wireless networks, packet sniffers can usually only capture one channel at a time unless the host computer has multiple wireless interfaces that allow for multichannel capture. Once the raw packet data is captured, the packet snif ...
Collection, Dissemination, and Management
... Embedded nature of sensor networks – they’re small! Network scales reaching thousands of nodes – there’s a lot of them! A necessity in debugging and testing cycle – we can’t stop messing! Learn about the environment after deployment – things change! ...
... Embedded nature of sensor networks – they’re small! Network scales reaching thousands of nodes – there’s a lot of them! A necessity in debugging and testing cycle – we can’t stop messing! Learn about the environment after deployment – things change! ...
CommView for WiFi
... One of the most important features of a good packet analyzer is the ability to reconstruct TCP data streams, providing the user with easy-to-read information on both current and past TCP sessions between different network hosts. With just one mouse click, you can watch the contents of any TCP sessio ...
... One of the most important features of a good packet analyzer is the ability to reconstruct TCP data streams, providing the user with easy-to-read information on both current and past TCP sessions between different network hosts. With just one mouse click, you can watch the contents of any TCP sessio ...
Introduction - Ilam university
... and ‘strict’ source routing parameters. ‘loose’ and ‘strict’ source option sometimes, is used for IP encapsulation in another IP or ...
... and ‘strict’ source routing parameters. ‘loose’ and ‘strict’ source option sometimes, is used for IP encapsulation in another IP or ...
Network Layer (Congestion and QoS)
... A lighter approach to QoS IntServ is very powerful but has some severe drawbacks: - There is a setup phase, this cases delay in starting data flow. - Routers need to maintain per-flow state. This approach is flow-based and not very scalable. - Complex router-to-router exchange of flow information. ...
... A lighter approach to QoS IntServ is very powerful but has some severe drawbacks: - There is a setup phase, this cases delay in starting data flow. - Routers need to maintain per-flow state. This approach is flow-based and not very scalable. - Complex router-to-router exchange of flow information. ...
Welcome to COE321: Logic Design
... instantaneous: rate at given point in time average: rate over longer period of time ...
... instantaneous: rate at given point in time average: rate over longer period of time ...
Network Architectures - Computing Sciences
... another packet. – Similar to placing an envelope containing a letter inside another envelope (which may have a different address). – sometimes the encapsulating packet is of a different protocol. ...
... another packet. – Similar to placing an envelope containing a letter inside another envelope (which may have a different address). – sometimes the encapsulating packet is of a different protocol. ...
Chapter 1 - UniMAP Portal
... “Intelligence” inside the network A separate signaling network is required ...
... “Intelligence” inside the network A separate signaling network is required ...
Notes: Chptr 1 - UniMAP Portal
... “Intelligence” inside the network A separate signaling network is required ...
... “Intelligence” inside the network A separate signaling network is required ...
Overlay Network and Data Transmission over Wireless
... Can’t distinguish packet loss with wireless link congestion ...
... Can’t distinguish packet loss with wireless link congestion ...
Computer Networks (CSC 345)
... • Can accommodate bursty traffic (as opposed to circuit-switching where transmission is at constant rate). ...
... • Can accommodate bursty traffic (as opposed to circuit-switching where transmission is at constant rate). ...
Packet switching
Packet switching is a digital networking communications method that groups all transmitted data into suitably sized blocks, called packets, which are transmitted via a medium that may be shared by multiple simultaneous communication sessions. Packet switching increases network efficiency, robustness and enables technological convergence of many applications operating on the same network.Packets are composed of a header and payload. Information in the header is used by networking hardware to direct the packet to its destination where the payload is extracted and used by application software.Starting in the late 1950s, American computer scientist Paul Baran developed the concept Distributed Adaptive Message Block Switching with the goal to provide a fault-tolerant, efficient routing method for telecommunication messages as part of a research program at the RAND Corporation, funded by the US Department of Defense. This concept contrasted and contradicted the heretofore established principles of pre-allocation of network bandwidth, largely fortified by the development of telecommunications in the Bell System. The new concept found little resonance among network implementers until the independent work of Donald Davies at the National Physical Laboratory (United Kingdom) (NPL) in the late 1960s. Davies is credited with coining the modern name packet switching and inspiring numerous packet switching networks in Europe in the decade following, including the incorporation of the concept in the early ARPANET in the United States.