ARQ Modeling (1)
... occur with small but non zero probability, example: Bit error probability in the order of 10-6 for systems using copper wires Bit error probability in the order of 10-9 for modern optical fiber systems High bit error probability in the order of 10-3 for wireless transmission systems ...
... occur with small but non zero probability, example: Bit error probability in the order of 10-6 for systems using copper wires Bit error probability in the order of 10-9 for modern optical fiber systems High bit error probability in the order of 10-3 for wireless transmission systems ...
COS 420 day 18
... Possibly change TCP or UDP source ports Recompute TCP or UDP checksums Translate ICMP messages Translate port numbers in an FTP session ...
... Possibly change TCP or UDP source ports Recompute TCP or UDP checksums Translate ICMP messages Translate port numbers in an FTP session ...
answers - Cs.princeton.edu
... NATs can allow easily management of internal devices, so that machines can be internally renumbered without changing their external (public) addresses. If explicit forwarding rules aren't configured in NATs, they often provide some security mechanisms by playing the role of firewalls, e.g., only all ...
... NATs can allow easily management of internal devices, so that machines can be internally renumbered without changing their external (public) addresses. If explicit forwarding rules aren't configured in NATs, they often provide some security mechanisms by playing the role of firewalls, e.g., only all ...
NAME: Computer Science 461 Midterm Exam March 30, 2009
... NATs can allow easily management of internal devices, so that machines can be internally renumbered without changing their external (public) addresses. If explicit forwarding rules aren't configured in NATs, they often provide some security mechanisms by playing the role of firewalls, e.g., only all ...
... NATs can allow easily management of internal devices, so that machines can be internally renumbered without changing their external (public) addresses. If explicit forwarding rules aren't configured in NATs, they often provide some security mechanisms by playing the role of firewalls, e.g., only all ...
Follow this link to Chapter 10
... X.25 provides the capacity to identify an adjacent sequence of data packets, which is called a complete packet sequence This allows the network to form longer blocks of data sent across network with smaller packet size without loss of block integrity To specify this mechanism, X.25 defines 2 t ...
... X.25 provides the capacity to identify an adjacent sequence of data packets, which is called a complete packet sequence This allows the network to form longer blocks of data sent across network with smaller packet size without loss of block integrity To specify this mechanism, X.25 defines 2 t ...
Document
... • End System (ES) – device used to support enduser applications or services • Intermediate System (IS) – device used to connect two networks • Bridge – an IS used to connect two LANs that use similar LAN protocols • Router - an IS used to connect two networks that may or may not be similar [Stalling ...
... • End System (ES) – device used to support enduser applications or services • Intermediate System (IS) – device used to connect two networks • Bridge – an IS used to connect two LANs that use similar LAN protocols • Router - an IS used to connect two networks that may or may not be similar [Stalling ...
... object-orientedness are considered too costly in terms of resource requirements (mostly RAM) to be of merit in programming the smallest microcontrollers. Even TinyOS [9], which is the most popular operating system for networked microcontrollers, has many shortcomings in these areas. Moreover, its ev ...
Sales Meeting - Draware A/S | Tlf. (+45) 45 76 20 21 | Vi
... In most cases, packet loss during gaps is rendered insignificant by packet loss concealment techniques built into the VoIP infrastructure. ...
... In most cases, packet loss during gaps is rendered insignificant by packet loss concealment techniques built into the VoIP infrastructure. ...
Networking - The Art of Zombie
... “Throughput” is the speed at which a router can transfer data. The transfer speed of your wireless connection is dependent on the wireless standard it uses. The most common standards today are 802.11g and 802.11n (also known as "wireless G" and "wireless N", respectively). Wireless N is faster than ...
... “Throughput” is the speed at which a router can transfer data. The transfer speed of your wireless connection is dependent on the wireless standard it uses. The most common standards today are 802.11g and 802.11n (also known as "wireless G" and "wireless N", respectively). Wireless N is faster than ...
Lecture #3
... may be intermittently connected may have dynamic IP addresses do not communicate directly with each other 2: Application Layer ...
... may be intermittently connected may have dynamic IP addresses do not communicate directly with each other 2: Application Layer ...
a client
... networked computers communicated and coordinate their actions only by passing message –G. Coulouris A collection of independent computers that appears to its users as a single coherent system. - S. Tanenbaum It leads to concurrency of components, lack of a global clock and independent failures o ...
... networked computers communicated and coordinate their actions only by passing message –G. Coulouris A collection of independent computers that appears to its users as a single coherent system. - S. Tanenbaum It leads to concurrency of components, lack of a global clock and independent failures o ...
1.8 History of Computer Networking and the Internet
... In the late 1980s, important extensions were made to TCP to implement hostbased congestion control [Jacobson 1988]. ...
... In the late 1980s, important extensions were made to TCP to implement hostbased congestion control [Jacobson 1988]. ...
midterm-review
... ARP Cache • Since sending an ARP request/reply for each IP datagram is inefficient, hosts maintain a cache (ARP Cache) of current entries. The entries expire after a time interval. • Contents of the ARP Cache: (128.143.71.37) at 00:10:4B:C5:D1:15 [ether] on eth0 (128.143.71.36) at 00:B0:D0:E1:17:D5 ...
... ARP Cache • Since sending an ARP request/reply for each IP datagram is inefficient, hosts maintain a cache (ARP Cache) of current entries. The entries expire after a time interval. • Contents of the ARP Cache: (128.143.71.37) at 00:10:4B:C5:D1:15 [ether] on eth0 (128.143.71.36) at 00:B0:D0:E1:17:D5 ...
Classification Of Network
... LAN: LAN is an acronym for Local Area Network. A LAN is a kind of network, where the network spans within a range of certain Km, in other words network is local. For Example: Computers communicated to each other in a lab forms a LAN. Infact multiple departmental labs in a campus or university connec ...
... LAN: LAN is an acronym for Local Area Network. A LAN is a kind of network, where the network spans within a range of certain Km, in other words network is local. For Example: Computers communicated to each other in a lab forms a LAN. Infact multiple departmental labs in a campus or university connec ...
TOPOLOGIES in COMPUTER NETWORKING
... MESH TOPOLOGY Also called a point-to-point topology Each device is connected directly to all other devices on the network. Network of 4—each computer would need 3 connections and cables; Network of 30 computers, each would need 29 connections and cables. ...
... MESH TOPOLOGY Also called a point-to-point topology Each device is connected directly to all other devices on the network. Network of 4—each computer would need 3 connections and cables; Network of 30 computers, each would need 29 connections and cables. ...
old_Ch1
... indicating that IP packet/datagram should not be fragmented, 3rd is M bit indicating whether this is last fragment of a datagram or not (more bit!). ...
... indicating that IP packet/datagram should not be fragmented, 3rd is M bit indicating whether this is last fragment of a datagram or not (more bit!). ...
Network Topologies
... If computer switched off or faulty should be somehow for data still to be passed around the loop – if not whole network can be fail as traffic only in one direction, Each device will re-broadcast the data packet so signal is stronger and can cover larger area than some topologies, No hubs / switches ...
... If computer switched off or faulty should be somehow for data still to be passed around the loop – if not whole network can be fail as traffic only in one direction, Each device will re-broadcast the data packet so signal is stronger and can cover larger area than some topologies, No hubs / switches ...
ppt
... These are called Address Resolution Protocol (ARP) tables. ARP tables are stored in RAM memory, where the cached information is maintained automatically on each of the devices. Each device on a network maintains its own ARP table. >arp -a When a network device wants to send data across the network, ...
... These are called Address Resolution Protocol (ARP) tables. ARP tables are stored in RAM memory, where the cached information is maintained automatically on each of the devices. Each device on a network maintains its own ARP table. >arp -a When a network device wants to send data across the network, ...
XCAST6_WhiteBoard
... header, destination addresses in the extension header and data payload. • Longer data payload is split into smaller chunks at the application level implementation, before forming to packets. • Small chunks’ size must also reserve space for destination addresses. ...
... header, destination addresses in the extension header and data payload. • Longer data payload is split into smaller chunks at the application level implementation, before forming to packets. • Small chunks’ size must also reserve space for destination addresses. ...
9781435487383_PPT_ch10
... • Takes the form of a network interface card (NIC) • External devices connect using USB port • Provides RJ-45 port ...
... • Takes the form of a network interface card (NIC) • External devices connect using USB port • Provides RJ-45 port ...
Clean Slate Design for the Internet
... There are still many things we’d be frightened to do: e.g. air-traffic control, telesurgery. The network is unreliable. We are tweaking. The research community has a lot to answer for: we’ve been stuck in incrementalism and backward compatibility. There is change afoot … NSF FIND and GENI. ...
... There are still many things we’d be frightened to do: e.g. air-traffic control, telesurgery. The network is unreliable. We are tweaking. The research community has a lot to answer for: we’ve been stuck in incrementalism and backward compatibility. There is change afoot … NSF FIND and GENI. ...
Remote Access
... Remote Access • Remote access technologies allow users to access a network and its services from a computer outside the network • Dial-up access requires: – Network computer (server) running RAS or NAS with a modem and a dial-up phone line • Remote Access Server – Microsoft • Network Access Server ...
... Remote Access • Remote access technologies allow users to access a network and its services from a computer outside the network • Dial-up access requires: – Network computer (server) running RAS or NAS with a modem and a dial-up phone line • Remote Access Server – Microsoft • Network Access Server ...
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.