Packet switching
... Advanced Research Projects Agency task was to create communication network for military purpose ...
... Advanced Research Projects Agency task was to create communication network for military purpose ...
Chapter 2
... • Transceivers sense that a signal is present and will not send from their connected station • If two signals are on the line at once, neither signal will make sense and a collision occurs • When a collision is detected, the host interface aborts transmission and waits (how long?) for the line to be ...
... • Transceivers sense that a signal is present and will not send from their connected station • If two signals are on the line at once, neither signal will make sense and a collision occurs • When a collision is detected, the host interface aborts transmission and waits (how long?) for the line to be ...
Web Services Using Visual .NET
... Record source and the destination of the packets, can be used for tracking purposes. Capture packets from both wired and wireless LAN Support for both IPV4 and IPV6 protocols. ...
... Record source and the destination of the packets, can be used for tracking purposes. Capture packets from both wired and wireless LAN Support for both IPV4 and IPV6 protocols. ...
Today`s Topics
... Star Topology: uses a central wiring device (hub) Ring Topology: all nodes are attached in a circular wiring arrangement ...
... Star Topology: uses a central wiring device (hub) Ring Topology: all nodes are attached in a circular wiring arrangement ...
NETWORKING LAB -
... usually within a building or a campus. If the computers are far apart (such as across town or in different cities), then a Wide Area Network (WAN) is typically used. Network Interface Card (NIC) - Every computer (and most other devices) is connected to a network through an NIC. In most desktop compu ...
... usually within a building or a campus. If the computers are far apart (such as across town or in different cities), then a Wide Area Network (WAN) is typically used. Network Interface Card (NIC) - Every computer (and most other devices) is connected to a network through an NIC. In most desktop compu ...
Deployed and Emerging Security Systems for the Internet
... – hard/expensive to enforce end-to-end security • users on the inside do not have to concern with security • a number of “standard” programs are a potential security risk and turned on by default: finger, telnet, rlogin/rsh, X Windows, ICMP – convenient point to combine security with unrelated servi ...
... – hard/expensive to enforce end-to-end security • users on the inside do not have to concern with security • a number of “standard” programs are a potential security risk and turned on by default: finger, telnet, rlogin/rsh, X Windows, ICMP – convenient point to combine security with unrelated servi ...
Blank Jeopardy
... Circuit boards that connect to the motherboard to add functionality to the computer. ...
... Circuit boards that connect to the motherboard to add functionality to the computer. ...
Networks
... • Three most popular ways to connect to the net is: – Phone modem: A device converts computer data into an analog audio ...
... • Three most popular ways to connect to the net is: – Phone modem: A device converts computer data into an analog audio ...
1. Assume that for the network represented on the right the routing
... a) Calculate the routing table for node A using the Dijkstra's algorithm. Justify your answer showing all intermediate steps. b) Now imagine that this network represented part of a network of networks (internet), where any node may communicate with any other node. The router A also runs link state p ...
... a) Calculate the routing table for node A using the Dijkstra's algorithm. Justify your answer showing all intermediate steps. b) Now imagine that this network represented part of a network of networks (internet), where any node may communicate with any other node. The router A also runs link state p ...
Document
... •Advanced Research Projects Agency initiated project to connect researchers with computers •Adopted new technology: •Packet switching •Internetworking •Resulted in system for remote access to expensive resources ...
... •Advanced Research Projects Agency initiated project to connect researchers with computers •Adopted new technology: •Packet switching •Internetworking •Resulted in system for remote access to expensive resources ...
Ethernet, IP and TCP
... on a host machine sends out a request on the LAN it is attached to. • A dhcp server will answer and lease an IP address to the host, sending it the network mask and the gateway address as well. • Internet providers work like that to save address space. • Problem: some services require IP addresses t ...
... on a host machine sends out a request on the LAN it is attached to. • A dhcp server will answer and lease an IP address to the host, sending it the network mask and the gateway address as well. • Internet providers work like that to save address space. • Problem: some services require IP addresses t ...
How Client/Server Networks Work
... particular packet doesn’t meet the set security standards, the firewall blocks that packet. ...
... particular packet doesn’t meet the set security standards, the firewall blocks that packet. ...
Introduction-to
... Resource Sharing Hardware (computing resources, disks, printers) Software (application software) Information Sharing Easy accessibility from anywhere (files, databases) Search Capability (WWW) Communication Email Message broadcast ...
... Resource Sharing Hardware (computing resources, disks, printers) Software (application software) Information Sharing Easy accessibility from anywhere (files, databases) Search Capability (WWW) Communication Email Message broadcast ...
Document
... message to all computers in the entire LAN, it is decided by this higher level device. This allows parallel communication to occur within the LAN without being effected by the higher level. To do this, the router needs to have a Dynamic Host Configuration Protocol (DHCP) ability. DHCP assigns each d ...
... message to all computers in the entire LAN, it is decided by this higher level device. This allows parallel communication to occur within the LAN without being effected by the higher level. To do this, the router needs to have a Dynamic Host Configuration Protocol (DHCP) ability. DHCP assigns each d ...
ASSIGNMENT #3
... A switch is also a combination of hardware and software having its own operating system. Like bridges, the switches are also used to increase the bandwidth of a network. However, in case of a switch, a network is virtually divided into small segments called Virtual LANs or VLANs. Similar type of use ...
... A switch is also a combination of hardware and software having its own operating system. Like bridges, the switches are also used to increase the bandwidth of a network. However, in case of a switch, a network is virtually divided into small segments called Virtual LANs or VLANs. Similar type of use ...
Solution
... 1. Suppose two nodes start to transmit at the same time a packet of length L over a broadcast channel of rate R. Denote the propagation delay between the two nodes as dprop. Will there be a collision dprop < L/R ? Why or why not? There will be a collision in the sense that while a node is transmitti ...
... 1. Suppose two nodes start to transmit at the same time a packet of length L over a broadcast channel of rate R. Denote the propagation delay between the two nodes as dprop. Will there be a collision dprop < L/R ? Why or why not? There will be a collision in the sense that while a node is transmitti ...
glossary - Homework Market
... (IP). The IP part of TCP/IP; the protocol used to route a data packet from its source to its destination over the Internet. The unique 32 bit number assigned to each computer connected to the Internet and used by the TCP/IP protocol to route packets of data to their destinations. The number is usual ...
... (IP). The IP part of TCP/IP; the protocol used to route a data packet from its source to its destination over the Internet. The unique 32 bit number assigned to each computer connected to the Internet and used by the TCP/IP protocol to route packets of data to their destinations. The number is usual ...
2 - UTRGV Faculty Web
... layer adds information and forms a packet – The computer transmits the final packet • When a packet arrives – The packet passes up through the protocol layers – A given layer performs processing and passes the packet up to the next layer – The application receives the message that was sent ...
... layer adds information and forms a packet – The computer transmits the final packet • When a packet arrives – The packet passes up through the protocol layers – A given layer performs processing and passes the packet up to the next layer – The application receives the message that was sent ...
This morning one of our programmers, Zundra Daniel went up to
... This mass replication of packets leads to extremely high levels of network traffic and causes severe packet collision problems. This does not occur on most wired networks because most networks use switches or routers (wired not wireless) instead of hubs. Switches and routers are "intelligent" and kn ...
... This mass replication of packets leads to extremely high levels of network traffic and causes severe packet collision problems. This does not occur on most wired networks because most networks use switches or routers (wired not wireless) instead of hubs. Switches and routers are "intelligent" and kn ...
4 Communication networks
... Send data to every other computer. Most hubs can accept a maximum of 24 connections Can be extended by connecting two or more hubs together. ...
... Send data to every other computer. Most hubs can accept a maximum of 24 connections Can be extended by connecting two or more hubs together. ...
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.