Napster & Gnutella
... a Query descriptor will respond with a QueryHit if a match is found against its local data set. •QueryHit: the response to a Query: contains IP address, GUID and search results ...
... a Query descriptor will respond with a QueryHit if a match is found against its local data set. •QueryHit: the response to a Query: contains IP address, GUID and search results ...
Slides - My E-town
... an attack on availability In this setting, these are usually called denial of service (DoS) attacks DoS attacks are very hard to avoid ...
... an attack on availability In this setting, these are usually called denial of service (DoS) attacks DoS attacks are very hard to avoid ...
network programming - Mathematical, Statistical, and Scientific
... client, client_address = server.accept() print ’server accepted connection request from ’,\ client_address print ’server waits for data’ data = client.recv(buffer) print ’server received ’, data server.close() ...
... client, client_address = server.accept() print ’server accepted connection request from ’,\ client_address print ’server waits for data’ data = client.recv(buffer) print ’server received ’, data server.close() ...
Elements of Socket Programming in Java
... In this paper, we have concluded that the socket programming generally holds the communication between the client and the server. Also discussed different client-server architecture using TCP/IP can be interfaced through the communication network. In TCP socket calls, the client sends the request to ...
... In this paper, we have concluded that the socket programming generally holds the communication between the client and the server. Also discussed different client-server architecture using TCP/IP can be interfaced through the communication network. In TCP socket calls, the client sends the request to ...
Presentation
... IBP: The Internet Backplane Protocol » Storage provisioned on community “depots” » Very primitive service (similar to block service, but more sharable) • Goal is to be a common platform (exposed) • Also part of end-to-end design » Best effort service – no heroic measures • Availability, reliability ...
... IBP: The Internet Backplane Protocol » Storage provisioned on community “depots” » Very primitive service (similar to block service, but more sharable) • Goal is to be a common platform (exposed) • Also part of end-to-end design » Best effort service – no heroic measures • Availability, reliability ...
NAME: Computer Science 461 Midterm Exam March 30, 2009
... 1D. [4 points] In the previous example of 1c, would anything be different if all packets were lost after you reached 32,000 bytes per second, instead of just a single packet? If so, what is the next instantaneous rate TCP will send at in this example, and how long (in terms of RTTs) would it now tak ...
... 1D. [4 points] In the previous example of 1c, would anything be different if all packets were lost after you reached 32,000 bytes per second, instead of just a single packet? If so, what is the next instantaneous rate TCP will send at in this example, and how long (in terms of RTTs) would it now tak ...
NAME: Computer Science 461 Midterm Exam March 30, 2009
... 1D. [4 points] In the previous example of 1c, would anything be different if all packets were lost after you reached 32,000 bytes per second, instead of just a single packet? If so, what is the next instantaneous rate TCP will send at in this example, and how long (in terms of RTTs) would it now tak ...
... 1D. [4 points] In the previous example of 1c, would anything be different if all packets were lost after you reached 32,000 bytes per second, instead of just a single packet? If so, what is the next instantaneous rate TCP will send at in this example, and how long (in terms of RTTs) would it now tak ...
Video Management - Self
... inputs; analog or digital, originated in both analog & IP cameras, Video Encoders, ViGuard DVR (Digital Video Recorder), and third-party DVRs • The network enables connectivity to many video surveillance (analog and digital) devices and various hardware platforms. It provides the flexibility to util ...
... inputs; analog or digital, originated in both analog & IP cameras, Video Encoders, ViGuard DVR (Digital Video Recorder), and third-party DVRs • The network enables connectivity to many video surveillance (analog and digital) devices and various hardware platforms. It provides the flexibility to util ...
See the dedicated slideshow - VCE IT Lecture Notes by Mark Kelly
... The most popular NOSes are: •Novell Netware (better, more expensive at first, cheaper over time) •Microsoft Server 2003 (now dominant) They offer similar services. ...
... The most popular NOSes are: •Novell Netware (better, more expensive at first, cheaper over time) •Microsoft Server 2003 (now dominant) They offer similar services. ...
Network Hardware File
... The most popular NOSes are: •Novell Netware (better, more expensive at first, cheaper over time) •Microsoft Server 2003 (now dominant) They offer similar services. ...
... The most popular NOSes are: •Novell Netware (better, more expensive at first, cheaper over time) •Microsoft Server 2003 (now dominant) They offer similar services. ...
Week 4 - cda college
... A protocol defines the syntax, semantics, and synchronization of communication. A protocol can therefore be implemented as hardware or software or both. ...
... A protocol defines the syntax, semantics, and synchronization of communication. A protocol can therefore be implemented as hardware or software or both. ...
DNS - FSU Computer Science Department
... text html file while asking Akamai servers to send the large files. • Good for the clients, and good for the ISPs because it reduces the upstream traffic. ...
... text html file while asking Akamai servers to send the large files. • Good for the clients, and good for the ISPs because it reduces the upstream traffic. ...
NOS 2
... Map unused local drive letter to directory share Use UNC name to reference directory share Select directory share from list of available shares Manage directory share by granting or restricting user access levels Linux uses either NFS or Samba to share files; NFS is the native Linux/Unix file ...
... Map unused local drive letter to directory share Use UNC name to reference directory share Select directory share from list of available shares Manage directory share by granting or restricting user access levels Linux uses either NFS or Samba to share files; NFS is the native Linux/Unix file ...
Modem
... • data arrives on one port and is sent to all other ports • each hub can be connected to many network segments • boosts the network signal prior to retransmitting • not as intelligent as a switch ...
... • data arrives on one port and is sent to all other ports • each hub can be connected to many network segments • boosts the network signal prior to retransmitting • not as intelligent as a switch ...
Three Challenges in Reliable Data Transport over Heterogeneous
... Use of soft state to allow each watcher process to detect that its peer is alive (rather than mirroring the peer’s state), be able to restart its peer (rather ...
... Use of soft state to allow each watcher process to detect that its peer is alive (rather than mirroring the peer’s state), be able to restart its peer (rather ...
Network analysis of counter-strike and starcraft
... Unlike typical Internet traffic, network games typically do not use reliable Internet transport protocols. The majority of reliable Internet traffic runs on top of TCP, which guarantees sequential, in order arrival of all data by retransmitting lost packets. However, the additional time required for ...
... Unlike typical Internet traffic, network games typically do not use reliable Internet transport protocols. The majority of reliable Internet traffic runs on top of TCP, which guarantees sequential, in order arrival of all data by retransmitting lost packets. However, the additional time required for ...
lesson08
... preventative and uses tools such as the Performance and Reliability Monitor, the Event Viewer, and Network Monitor utilities. – Proactive system administrators use these tools to help spot potential and actual networking issues without wasting time guessing what the problems might be because they la ...
... preventative and uses tools such as the Performance and Reliability Monitor, the Event Viewer, and Network Monitor utilities. – Proactive system administrators use these tools to help spot potential and actual networking issues without wasting time guessing what the problems might be because they la ...
Review for Quiz-1 - Communications Systems Center (CSC)
... Persistent HTTP Nonpersistent HTTP issues: • requires 2 RTTs per object • OS overhead for each TCP connection • browsers often open parallel TCP connections to fetch referenced objects Persistent HTTP • server leaves connection open after sending response • subsequent HTTP messages between same cli ...
... Persistent HTTP Nonpersistent HTTP issues: • requires 2 RTTs per object • OS overhead for each TCP connection • browsers often open parallel TCP connections to fetch referenced objects Persistent HTTP • server leaves connection open after sending response • subsequent HTTP messages between same cli ...
The Infrastructure Technologies
... Agent process on client Network client’s link to network operating system Network Examples Novell NetWare Windows Server 2000, 2003, NT Server Peer to Peer Networks NOS is installed on each attached workstation Runs on top of the local operating system ...
... Agent process on client Network client’s link to network operating system Network Examples Novell NetWare Windows Server 2000, 2003, NT Server Peer to Peer Networks NOS is installed on each attached workstation Runs on top of the local operating system ...
Internet & Web Protocols - University of Liverpool
... e.g., voltage levels, data rates, max distances ...
... e.g., voltage levels, data rates, max distances ...
CV - Emitac – Enterprise Solutions
... infrastructure design, integration, and operations. Gathering business requirements and objectives, translating them into technical solutions. Work with technical management to architect networks security that effectively reflect business needs, service-level and availability requirements, and other ...
... infrastructure design, integration, and operations. Gathering business requirements and objectives, translating them into technical solutions. Work with technical management to architect networks security that effectively reflect business needs, service-level and availability requirements, and other ...
Security Tools
... • Ping - Click to Enlarge Ping - Use Ping to determine if a network device is reachable. • Traceroute - Use traceroute to trace the path to a network host or device. • Throughput - Click to Enlarge Throughput - Use Throughput to test the data speed on a connection with a remote host. • Lookup - Use ...
... • Ping - Click to Enlarge Ping - Use Ping to determine if a network device is reachable. • Traceroute - Use traceroute to trace the path to a network host or device. • Throughput - Click to Enlarge Throughput - Use Throughput to test the data speed on a connection with a remote host. • Lookup - Use ...
Lag
In online gaming, lag is a noticeable delay between the action of players and the reaction of the server. Although lag may be caused by high latency, it may also occur due to insufficient processing power in the client(Screen-lag). Screen-Lag can also happened in single player games as well.The tolerance for lag depends heavily on the type of game. For instance, a strategy game or a turn-based game with a low pace may have a high threshold or even be mostly unaffected by high delays, whereas a twitch gameplay game such as a first-person shooter with a considerably higher pace may require significantly lower delay to be able to provide satisfying gameplay. But, the specific characteristics of the game matter. For example, fast chess is a turn-based game that is fast action and may not tolerate high lag. And, some twitch games can be designed such that only events that don't impact the outcome of the game introduce lag, allowing for fast local response most of the time.