Circuit Switching
... may be unable to connect stations because all paths are in use used on voice systems because it is expected for phone calls to be of short duration and that only a fraction of the phones will be engaged at any one time ...
... may be unable to connect stations because all paths are in use used on voice systems because it is expected for phone calls to be of short duration and that only a fraction of the phones will be engaged at any one time ...
Active Networks
... Dynamic Composition of Network Services Composite network services can take on a variety of forms, depending on API Fine Granularity of Control 1. A single pkt can modify the node behavior seen by all pkts arriving at the node 2. A single pkt modifies the behavior seen only by that ...
... Dynamic Composition of Network Services Composite network services can take on a variety of forms, depending on API Fine Granularity of Control 1. A single pkt can modify the node behavior seen by all pkts arriving at the node 2. A single pkt modifies the behavior seen only by that ...
ppt - Course Website Directory
... IP and Underlying Networks • Most hosts are attached to a LAN by an interface board that only understands LAN addresses. For example, every Ethernet board is equipped with a globally unique 48-bit Ethernet address. • The boards send and receive frames based on 48bit Ethernet addresses. They know not ...
... IP and Underlying Networks • Most hosts are attached to a LAN by an interface board that only understands LAN addresses. For example, every Ethernet board is equipped with a globally unique 48-bit Ethernet address. • The boards send and receive frames based on 48bit Ethernet addresses. They know not ...
Introduction - Massey University
... Explain connection-oriented service Explain connectionless service Compare circuit-switched network against packet-switched network Answer the short exercises given in the session ...
... Explain connection-oriented service Explain connectionless service Compare circuit-switched network against packet-switched network Answer the short exercises given in the session ...
Go_Net_Security
... Network Adapters • Devices connected to or installed in nodes: – Network interface cards (NIC) – External network adapter ...
... Network Adapters • Devices connected to or installed in nodes: – Network interface cards (NIC) – External network adapter ...
Networks and Internet Technology
... TCP groups bytes into segments and passes them to IP for delivery. ...
... TCP groups bytes into segments and passes them to IP for delivery. ...
Virtual Private Network
... – A link layer frame is placed into the payload of a protocol data unit(PDU) from some other layer, including another layer 2 frame. – Tunnel PPP frames through an IP network. – Point-to-Point Tunneling Protocol (PPTP),Layer 2 Forwarding protocol (L2F), Layer 2 Tunneling Protocol ...
... – A link layer frame is placed into the payload of a protocol data unit(PDU) from some other layer, including another layer 2 frame. – Tunnel PPP frames through an IP network. – Point-to-Point Tunneling Protocol (PPTP),Layer 2 Forwarding protocol (L2F), Layer 2 Tunneling Protocol ...
An Introduction to Computer Networking
... • Computers communicate on single segment of cable and share each other’s data and devices • Simple example of a local area network (LAN) ...
... • Computers communicate on single segment of cable and share each other’s data and devices • Simple example of a local area network (LAN) ...
ACS Seminar on Internet computing Internet Security Issues
... – The sensor, which is deployed at a target site, monitors packets on the network. When it detects an attack, the sensor sends a tracing request to the monitoring manager. – In response to a sensor request, the monitoring manager controls tracers and manages the entire tracing process. – The tracer, ...
... – The sensor, which is deployed at a target site, monitors packets on the network. When it detects an attack, the sensor sends a tracing request to the monitoring manager. – In response to a sensor request, the monitoring manager controls tracers and manages the entire tracing process. – The tracer, ...
The Network Layer
... – Divide the network into areas, each area has unique number • Nodes carry their area number in the address 1.A, 2.B, etc. ...
... – Divide the network into areas, each area has unique number • Nodes carry their area number in the address 1.A, 2.B, etc. ...
Enterprise network
... • Network topologies include bus, star, ring, mesh, point-to-point, point-to-multipoint, and hybrid. • Physical topology refers to the shape of a network’s wires; logical topology is the shape of the path the data follows as it moves through a network. • In Windows 7 and Windows Vista, most networki ...
... • Network topologies include bus, star, ring, mesh, point-to-point, point-to-multipoint, and hybrid. • Physical topology refers to the shape of a network’s wires; logical topology is the shape of the path the data follows as it moves through a network. • In Windows 7 and Windows Vista, most networki ...
Poster - The University of Manchester
... throughput delay the delivery of data to the receiving application as shown in the centre plot below. For e-VLBI this is undesirable and can lead to loss of correlation. However, if incoming CBR data can be stored in the TCP socket buffer during the loss Effect ...
... throughput delay the delivery of data to the receiving application as shown in the centre plot below. For e-VLBI this is undesirable and can lead to loss of correlation. However, if incoming CBR data can be stored in the TCP socket buffer during the loss Effect ...
EECC694 - Shaaban
... • Bootstrap protocol BOOTP: Uses UDP packets which can be forwarded to routers No need for a BOOTP server on each LAN. EECC694 - Shaaban #17 lec #9 Spring2000 4-4-2000 ...
... • Bootstrap protocol BOOTP: Uses UDP packets which can be forwarded to routers No need for a BOOTP server on each LAN. EECC694 - Shaaban #17 lec #9 Spring2000 4-4-2000 ...
Lecture # 2 CH. 2 Network Models
... The transport layer is responsible for delivery of a message from one process to another. Responsibilities of the transport layer - Port addressing - Flow control - Error control Session, presentation layers (according to the Dr’s recommendations) are not important Application Layer The applicatio ...
... The transport layer is responsible for delivery of a message from one process to another. Responsibilities of the transport layer - Port addressing - Flow control - Error control Session, presentation layers (according to the Dr’s recommendations) are not important Application Layer The applicatio ...
Network Security
... All exams are closed-book and extremely time limited. Exams consist of numerical and may be multiple-choice (truefalse) questions. ...
... All exams are closed-book and extremely time limited. Exams consist of numerical and may be multiple-choice (truefalse) questions. ...
Networks Sample Exam Solutions
... • In circuit switching, the links in the path cannot be shared during the connection; in virtual circuit p.s. they can • Also, c-s is ideal for “smooth” network traffic, whereas v-c is ideal for bursty traffic (especially if it’s long-lived &/or interactive) ...
... • In circuit switching, the links in the path cannot be shared during the connection; in virtual circuit p.s. they can • Also, c-s is ideal for “smooth” network traffic, whereas v-c is ideal for bursty traffic (especially if it’s long-lived &/or interactive) ...
Lecture Note Ch.20
... ◦ Host-to-host delivery ◦ For routing packets through the router and switches. ...
... ◦ Host-to-host delivery ◦ For routing packets through the router and switches. ...
Intrusion Detection Systems
... has already been established and whether this packet was requested. – If a packet arrives with no record of its being part of legitimate session, the firewall will block access by dropping it. ...
... has already been established and whether this packet was requested. – If a packet arrives with no record of its being part of legitimate session, the firewall will block access by dropping it. ...
Lecture Notes - Computer Science & Engineering
... Connection flooding: attacker sends as much data as the victim can handle, preventing other from acess – E.g., ping of death, smurf, syn flooding, etc. Traffic redirection: routers forward packets to wrong address – Corrupted router, incorrect DNS entry, etc. ...
... Connection flooding: attacker sends as much data as the victim can handle, preventing other from acess – E.g., ping of death, smurf, syn flooding, etc. Traffic redirection: routers forward packets to wrong address – Corrupted router, incorrect DNS entry, etc. ...
ppt
... IP Router Design • Different architectures for different types of routers • High speed routers incorporate large number of processors • Common case is optimized carefully ...
... IP Router Design • Different architectures for different types of routers • High speed routers incorporate large number of processors • Common case is optimized carefully ...
pdf
... w No need to burden the internals of the network with properties that can, and must, be implemented at the periphery ...
... w No need to burden the internals of the network with properties that can, and must, be implemented at the periphery ...
DuraMAR™ 1000
... removal and upgrade, snapping into a mounting tray with spring-loaded dagger pins. The unit also integrates multiple Power-Over-Ethernet (POE) RJ-45 injector ports and Power with Serial (PwS) Connectors so that clean isolated power and signal are carried over a single standard Ethernet or serial cab ...
... removal and upgrade, snapping into a mounting tray with spring-loaded dagger pins. The unit also integrates multiple Power-Over-Ethernet (POE) RJ-45 injector ports and Power with Serial (PwS) Connectors so that clean isolated power and signal are carried over a single standard Ethernet or serial cab ...
TCP/IP
... Internet service that translates domain names into IP addresses Because domain names are alphabetic, they're easier to remember The Internet however, is really based on IP addresses Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. ...
... Internet service that translates domain names into IP addresses Because domain names are alphabetic, they're easier to remember The Internet however, is really based on IP addresses Every time you use a domain name, therefore, a DNS service must translate the name into the corresponding IP address. ...
Wake-on-LAN
Wake-on-LAN (WoL) is an Ethernet or Token ring computer networking standard that allows a computer to be turned on or awakened by a network message.The message is usually sent by a program executed on another computer on the same local area network. It is also possible to initiate the message from another network by using subnet directed broadcasts or a WOL gateway service. Equivalent terms include wake on WAN, remote wake-up, power on by LAN, power up by LAN, resume by LAN, resume on LAN and wake up on LAN. In case the computer being awakened is communicating via Wi-Fi, a supplementary standard called Wake on Wireless LAN (WoWLAN) must be employed.The WOL and WoWLAN standards are often supplemented by vendors to provide protocol-transparent on-demand services, for example in the Apple Bonjour wake-on-demand (Sleep Proxy) feature.