Week 1 - cda college
... End Devices: Acts as a source/destination. For message transmitting or receiving. Server: In a client/server network environment, network services are located in a dedicated computer whose only function is to respond to the requests of clients. The server contains file sharing, http and other servic ...
... End Devices: Acts as a source/destination. For message transmitting or receiving. Server: In a client/server network environment, network services are located in a dedicated computer whose only function is to respond to the requests of clients. The server contains file sharing, http and other servic ...
Book Title - Computer Science
... Peer-to peer is not suited for networks with many computers Peer-to-peer is easy to set up. Example: home networks © Prentice-Hall, Inc ...
... Peer-to peer is not suited for networks with many computers Peer-to-peer is easy to set up. Example: home networks © Prentice-Hall, Inc ...
ppt - Computing Science
... As always, Security is a big issue! More peers join if they can trust other peers How to assess trust? And, how to use it? Research Problems - Evidence identification • What may serve as an evidence? • E.g., fraction of time a peer fulfilled its commitment ...
... As always, Security is a big issue! More peers join if they can trust other peers How to assess trust? And, how to use it? Research Problems - Evidence identification • What may serve as an evidence? • E.g., fraction of time a peer fulfilled its commitment ...
Session2
... Spyware is a type of malware that can be installed on computers, and which collects small pieces of information about users without their knowledge. The presence of spyware is typically hidden from the user, and can be difficult to detect. ...
... Spyware is a type of malware that can be installed on computers, and which collects small pieces of information about users without their knowledge. The presence of spyware is typically hidden from the user, and can be difficult to detect. ...
1 Distributed Systems What are distributed systems? How would you
... What are distributed systems? How would you characterize them? • Components of the system are located at networked computers • Cooperate to provide some service • No shared memory • Communication (sending messages): delays, unreliable • No common clock (makes coordination much more difficult) • Inde ...
... What are distributed systems? How would you characterize them? • Components of the system are located at networked computers • Cooperate to provide some service • No shared memory • Communication (sending messages): delays, unreliable • No common clock (makes coordination much more difficult) • Inde ...
P2P final
... A combination of a server and a client. In the decentralized gnutella model, each computer on the network is both a client and a server. Time to Live Abbreviated "TTL," the Time to Live is the number of hops that a message will make on the Gnutella Network before being discarded. Each servent that ...
... A combination of a server and a client. In the decentralized gnutella model, each computer on the network is both a client and a server. Time to Live Abbreviated "TTL," the Time to Live is the number of hops that a message will make on the Gnutella Network before being discarded. Each servent that ...
Advances in Peer-to-peer Content Search
... one single node is responsible for creating it. If any given node is lost it does not affect the overall search mechanism of the Gnutella network. The worst case is that you only lose the content provided by that node. Consequently Gnutella provides mechanisms to counteract some of the limitations a ...
... one single node is responsible for creating it. If any given node is lost it does not affect the overall search mechanism of the Gnutella network. The worst case is that you only lose the content provided by that node. Consequently Gnutella provides mechanisms to counteract some of the limitations a ...
Network Emulation for Researching Long-Fat
... “Memory and CPU demands on the individual nodes were not measured, but we believe will be modest.” “The authors ignore interrupt handling overhead in their evaluation, which likely dominates all other costs.” “Resource control remains an open problem.” ...
... “Memory and CPU demands on the individual nodes were not measured, but we believe will be modest.” “The authors ignore interrupt handling overhead in their evaluation, which likely dominates all other costs.” “Resource control remains an open problem.” ...
F07_Lecture1_Intro
... – E.g., end-to-end Transport protocols • TCP performs end-to-end retransmission of lost packets to give the illusion of a reliable underlying network. ...
... – E.g., end-to-end Transport protocols • TCP performs end-to-end retransmission of lost packets to give the illusion of a reliable underlying network. ...
Network Hardware
... centralised, security is easier to manage, updates to the data are far easier to administer and it is far easier to backup the data centrally. ...
... centralised, security is easier to manage, updates to the data are far easier to administer and it is far easier to backup the data centrally. ...
Overlay Networks
... • Peer-to-peer networks – Nodes are end hosts – Primarily for file sharing, and recently telephony – Centralized directory (Napster), query flooding (Gnutella), super-nodes (KaZaA), and distributed downloading and anti-free-loading (BitTorrent) ...
... • Peer-to-peer networks – Nodes are end hosts – Primarily for file sharing, and recently telephony – Centralized directory (Napster), query flooding (Gnutella), super-nodes (KaZaA), and distributed downloading and anti-free-loading (BitTorrent) ...
Document
... Instant and Multiple Accesses : Computer Networks are multiply processed, many of users can access the same information at the same time. Immediate commands such as printing commands can be made with the help of computer networks. High Reliability : High reliability is achieved by replicating impor ...
... Instant and Multiple Accesses : Computer Networks are multiply processed, many of users can access the same information at the same time. Immediate commands such as printing commands can be made with the help of computer networks. High Reliability : High reliability is achieved by replicating impor ...
Introduction to Networks
... protocols versus the Internet protocols are no longer relevant. – ISO protocols are largely ignored. – An implementation of the TCP/IP protocol suite was bundled with the Unix operating system. – The ISO/ITU culture has always been to specify first and implement later. – In 1988, the NIST approved a ...
... protocols versus the Internet protocols are no longer relevant. – ISO protocols are largely ignored. – An implementation of the TCP/IP protocol suite was bundled with the Unix operating system. – The ISO/ITU culture has always been to specify first and implement later. – In 1988, the NIST approved a ...
Networking & Security
... SNMP (Simple Network Management Protocol ) allows for remote monitoring and configuration of routers, bridges , network cards, switches … ...
... SNMP (Simple Network Management Protocol ) allows for remote monitoring and configuration of routers, bridges , network cards, switches … ...
Topics discussed in this section
... A network is a set of devices (often referred to as nodes) connected by communication links. A node can be a computer, printer, or any other device capable of sending and/or receiving data generated by other nodes on the network. Topics discussed in this section: Distributed Processing Network Cri ...
... A network is a set of devices (often referred to as nodes) connected by communication links. A node can be a computer, printer, or any other device capable of sending and/or receiving data generated by other nodes on the network. Topics discussed in this section: Distributed Processing Network Cri ...
Chapter 1 An Introduction to Networking
... • Every computer can communicate directly with every other computer • By default, no computer has more authority than another • No centralized security. Security is maintained on each individual computer (decentralized security model) • Every computer is capable of sending and receiving information ...
... • Every computer can communicate directly with every other computer • By default, no computer has more authority than another • No centralized security. Security is maintained on each individual computer (decentralized security model) • Every computer is capable of sending and receiving information ...
PowerPoint
... But, agents can compare their utility in some way with agents in other tribes and move to them if they appear to be doing better also copying better agents behavior in some way The “tag” is just the identifier that indicates which tribe the agent is in. Hence agents sharing the same tag inhabit the ...
... But, agents can compare their utility in some way with agents in other tribes and move to them if they appear to be doing better also copying better agents behavior in some way The “tag” is just the identifier that indicates which tribe the agent is in. Hence agents sharing the same tag inhabit the ...
COMP10023 - UWS Mahara
... Before a WiFi wireless router is connected to the rest of the existing network, proper configuration of the wireless router is necessary. Router firmware upgrading may also be needed for enhanced performance or functionality. a. ...
... Before a WiFi wireless router is connected to the rest of the existing network, proper configuration of the wireless router is necessary. Router firmware upgrading may also be needed for enhanced performance or functionality. a. ...
ch._1_-_guided_reading
... 9. Server malfunctions or failures mean users ________________________________ lose access to network resources such as _____________________, drives, and __________________________. ...
... 9. Server malfunctions or failures mean users ________________________________ lose access to network resources such as _____________________, drives, and __________________________. ...
Presentation_VoIP P2P Networks
... The system should be able to automatically configure itself. (e.g. by detecting NAT and firewall settings, discovering neighbouring peers and performing initial registration.) It should be able to adapt to available resources and distinguish between peers with different capacity and availability con ...
... The system should be able to automatically configure itself. (e.g. by detecting NAT and firewall settings, discovering neighbouring peers and performing initial registration.) It should be able to adapt to available resources and distinguish between peers with different capacity and availability con ...
Peer-to-Peer Networks and
... Tim Caserza, -6Because of this, the RIAA has begun tracking down those who share music files illegally through peer-to-peer networks. Beginning in January 2003, the RIAA began filing subpoenas to Internet Service Providers to release the identities of the users that they had identified as illegally ...
... Tim Caserza, -6Because of this, the RIAA has begun tracking down those who share music files illegally through peer-to-peer networks. Beginning in January 2003, the RIAA began filing subpoenas to Internet Service Providers to release the identities of the users that they had identified as illegally ...
Communications and Networks
... connection to the other nodes. The resulting pattern forms the appearance of a mesh. • If a path between two nodes is somehow disrupted, data can be automatically rerouted. • Wireless technologies are frequently used to build mesh networks. ...
... connection to the other nodes. The resulting pattern forms the appearance of a mesh. • If a path between two nodes is somehow disrupted, data can be automatically rerouted. • Wireless technologies are frequently used to build mesh networks. ...
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. ...
... 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. ...
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. ...
... 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. ...
Lecture 2 Digital Data Representation (1)
... This lecture covers: Networking concepts and terminology Common networking and communications applications Technical issues related to networks, including the major types of ...
... This lecture covers: Networking concepts and terminology Common networking and communications applications Technical issues related to networks, including the major types of ...
Peer-to-peer
Peer-to-peer (P2P) computing or networking is a distributed application architecture that partitions tasks or work loads between peers. Peers are equally privileged, equipotent participants in the application. They are said to form a peer-to-peer network of nodes.Peers make a portion of their resources, such as processing power, disk storage or network bandwidth, directly available to other network participants, without the need for central coordination by servers or stable hosts. Peers are both suppliers and consumers of resources, in contrast to the traditional client-server model in which the consumption and supply of resources is divided. Emerging collaborative P2P systems are going beyond the era of peers doing similar things while sharing resources, and are looking for diverse peers that can bring in unique resources and capabilities to a virtual community thereby empowering it to engage in greater tasks beyond those that can be accomplished by individual peers, yet that are beneficial to all the peers.While P2P systems had previously been used in many application domains, the architecture was popularized by the file sharing system Napster, originally released in 1999. The concept has inspired new structures and philosophies in many areas of human interaction. In such social contexts, peer-to-peer as a meme refers to the egalitarian social networking that has emerged throughout society, enabled by Internet technologies in general.