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ecs251_w2013_final
ecs251_w2013_final

... (Map and Reduce) from the wikipedia of MapReduce “… David DeWitt and Michael Stonebraker, computer scientists specializing in parallel databases and shared-nothing architectures, have been critical of the breadth of problems that MapReduce can be used for. They called its interface too lowlevel and ...
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Network Components Presentation

... Stores logical IP addresses and can deal with complex networks where there is more than one possible path to a destination by calculating the optimum route at the time. i.e. Directs packets across a packet switched network. ...
Chapter 11&12 Routing
Chapter 11&12 Routing

... • When initialized, router determines link cost on each interface • Router advertises these costs to all other routers in topology • Router monitors its costs —When changes occurs, costs are re-advertised ...
Orf467F10Networks
Orf467F10Networks

... into two groups : forward arcs and backward arcs. An arc (i,j) in the path is a forward arc if the path visits node i prior to visiting node j , and is a backward arc otherwise. Directed Path: A directed path is a directed walk without any repetition of nodes. We can store a path easily by defining ...
EL736 Communications Networks II: Design and Algorithms
EL736 Communications Networks II: Design and Algorithms

...  connect N areas through M possible locations  one access link per location  maximal connection per location  maximum number of ports ...
Press release Warsaw, August 30th, 2013 Exatel is preparing the
Press release Warsaw, August 30th, 2013 Exatel is preparing the

... Exatel Chairman of the Management Board. The construction, start up and implementation of the CE network will encompass two primary services: Ethernet LINE and Ethernet LAN. Establishing point-to-point connections will be made possible by the former. It is used for the transmission of large data pac ...
Core network components - Charles Sturt University
Core network components - Charles Sturt University

... • e.g 10Base5 provides 10Mbps baseband, up to 500 meters • T and F are used in place of segment length for twisted pair and fiber ...
06/07 Semester B - City University of Hong Kong
06/07 Semester B - City University of Hong Kong

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... Areas in an Autonomous System  Area is a collection of networks, hosts, and routers all contained within an autonomous system.  Routers inside an area flood the area with routing information.  Area border routers: Summarize the information about the area and send it to other routers.  Backbone ...
PowerPoint - Surendar Chandra
PowerPoint - Surendar Chandra

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pptx

... flexibility: MPLS forwarding decisions can differ from those of IP  use destination and source addresses to route flows to same destination differently (traffic engineering)  re-route flows quickly if link fails: pre-computed backup paths (useful for VoIP) ...
Understanding Networks II
Understanding Networks II

... way of a wireless access point (AP). ...
The Internet and the World Wide Web
The Internet and the World Wide Web

... human brains and computing machines will be coupled together very tightly, and that the resulting partnership will think as no human brain has ever thought and process data in a way not approached by the information-handling machines we know today. ...
PPT Version
PPT Version

... need to be accurately synchronized to high quality network clock. • Clock needs to be of adequate quality, have the resources available to support the client and be accessible via a time suitable network path. • When the clock fails the slave needs to find a new clock • Initially clock-slave pairing ...
Switch Cisco c6-sd208-eu
Switch Cisco c6-sd208-eu

... bandwidth-intensive files while still supporting 10/100 Mbps clients. The SLM2008 supports the IEEE802.3af standard for Power over Ethernet (PoE) for obtaining its power over a designated PD port or from an external AC power adapter. This gives companies the option to install the switch in places wh ...
CIS222 - Data Communications and Enterprise Networking
CIS222 - Data Communications and Enterprise Networking

... WAP can be used to access any web page on the Internet. VSAT networks require a double hop to be made to a satellite, thus the RTT is double that of conventional satellite networks. Private circuits carrying data over PDH transmission networks suffer occasional frame slips when synchronisation is lo ...
University of Ottawa - School of Electrical Engineering and
University of Ottawa - School of Electrical Engineering and

... communication, standing for north, east, west, and south—the directions on a compass. Map an 8 × 8 array of elements one-to-one onto 64 end node devices interconnected in the following topologies: bus, ring, 2D mesh, 2D torus, and fully connected. How long does it take in the best case for each node ...
Artificial Neural Networks (ANNs)
Artificial Neural Networks (ANNs)

... from which it does not receive any information.  There are no feedback loops.  They are used in pattern generation/recognition/classification.  They have fixed inputs and outputs. ...
The Presentation
The Presentation

... Create process models which control the underlying functionality of the node models created in node editor Represented by finite state machines Created with icons that represent states and lines that represent transitions between states Operations performed in each state or for a transition are desc ...
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... Bridging uses flooding as a routing scheme ...
MCS-377 Intra-term Exam 2 Solutions
MCS-377 Intra-term Exam 2 Solutions

... prevents some instances. Traceroute uses the TTL field to probe to a given depth, and then receives an ICMP message in response. 6. [ 10 Points ] A computer receives the eight data bits 10001011 followed by the three CRC bits 101; the generator is 1001. Does this indicate that one or more bits were ...
Online Appendix - Iñaki Aldasoro
Online Appendix - Iñaki Aldasoro

... where as before C indicates the number of connections in the network, aij stands for an element of the adjacency matrix, cin,i denotes the in-degree of node i, δmi ,mj is the Kronecker delta symbol and mi labels the module to which node i is assigned (δmi ,mj takes the value of 1 if nodes i and j ar ...
View File - UET Taxila
View File - UET Taxila

... communication at a distance. The word data refers to information presented in whatever form is agreed upon by the parties creating and using the data. Data communications are the exchange of data between two devices via some form of transmission medium such as a wire cable. ...
Slide 1
Slide 1

... Click, a DHCP server, a web server Software is pre-installed. Node acts as like a cable or DSL modem User connects PC or laptop to the node’s ethernet interface Node automatically configures user’s computer via DHCP Lists itself as default IP router ...
View File
View File

... communication at a distance. The word data refers to information presented in whatever form is agreed upon by the parties creating and using the data. Data communications are the exchange of data between two devices via some form of transmission medium such as a wire cable. ...
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IEEE 802.1aq

Shortest Path Bridging (SPB), specified in the IEEE 802.1aq standard, is a computer networking technology intended to simplify the creation and configuration of networks, while enabling multipath routing.For non-experts, or non-technical readers SPB is an IEEE standard that combines many functions of routing, bridging, load balancing (link aggregration, multi-chassis link aggregation, equal-cost multi-path routing, network virtualization) and tunneling (virtual routing and forwarding, stealth networks, layer-2 virtual service networks (L2VSN), and layer-3 virtual service networks (L3VSN)) into a single easy to configure protocol, which can yield a variety of benefits such as better fault tolerance, increased bandwidth, and improved security.Shortest Path Bridging is the replacement for the older spanning tree protocols (STP) (spanning tree protocol IEEE 802.1D, rapid spanning tree protocol (RSTP) IEEE 802.1w, multiple spanning tree protocol (MSTP) IEEE 802.1s) that permitted only a single path toward the root bridge and blocked any redundant paths that could result in a layer 2 loop. SPB allows all paths to be active with multiple equal cost paths, and provides much larger layer 2 topologies (up to 16 million compared to the traditional virtual local area network (VLAN) limit of 4,096 specified in the IEEE standard 802.1Q). It also supports faster convergence times, and improves the efficiency of the mesh topologies through increased bandwidth and redundancy between all devices, allowing traffic to load share across all paths of a mesh network. To enhance resiliency in the access layer SPB can also be integrated with link aggregation functions, such as standards-based link aggregation (IEEE 802.1AX) and proprietary multi-chassis link aggregation (MC-LAG) implementations.The technology provides logical Ethernet networks on native Ethernet infrastructures using a link state protocol to advertise both topology and logical network membership. Packets are encapsulated at the edge either in media access control-in-media access control (MAC-in-MAC) 802.1ah or tagged 802.1Q/802.1ad frames and transported only to other members of the logical network. Unicast, multicast, and broadcast are supported and all routing is on a symmetric shortest paths.The control plane is based on the Intermediate System to Intermediate System (IS-IS), leveraging a small number of extensions defined in Request for Comments(RFC) 6329.
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