Computer Networks TopDownApproach -ENGLISH

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• Mbps wireless access networks types terrestrial radio channels
• Udp benefits connection setup delay handshake easy implementation
• Checksum binary udp formation treat data 16-bit numbers
• Port bytes udp format segments source destination length
• Udp applications multimediastreaming dns snmp
• Packets arrive udp user datagram protocol unlinked stateless
• Pair twisted copper wire link consists cables combined
• Messages layer transport multiplexing/demultiplexing multiplexing multiple sockets accepted
• Data integrity delay transport properties reliable exchange losses
• Transport layer transportschicht logical process-to-process communication depending protocol
• Transmission bandwidth rate r capacity link data transferred
• Traffic intensity formel la r l packet length
• Ttl router icmp traceroute series udp segments unimportant
• Tp twisted pair
• Link throughput bottleneck path sender receiver limits transmission
• Time throughput types rate data transmitted sender receiver
• Messages control tcp advantages versus udp reliable transport
• Tcp connection rst response requests ports process tells
• Sequence number client selects random start sends syn
• Page fin ack tcp connection removal closes flag
• Estimatedrtt samplertt tcp timeout interval rtt measured repetitions
• Devrtt deviation b tcp timeout interval samplertt calculated
• Tcp timeout interval estimated rtt security surcharge timeoutinterval
• Tcp sequenznummer number byte contained segment application data
• Segment tcp retransmission single timer oldest unconfirmed expiration
• Tcp header length bits values range specifies number
• Data generally tcp header flags ack ack-nummer im
• Bit port number length n tcp header structure
• Rwnd tcp flow control works receiver writes size
• Tcp flow control definition receiver transmitters overfill receiver's
• Tcp fairness probleme udp media applications achieve constant
• K tcp link fairness fair connections bandwidth r
• Transmission tcp properties point-to-point communication transmitter receiver reliable
• Loss w tcp throughput simplified timeouts slow start
• Cwnd congestion start mss tcp control slow beginning
• Congestion tcp control phases slow start avoidance fast
• Cwnd ssthresh start sender increase tcp congestion control
• Cwnd congestion double mss ack tcp control fast
• Congestion reached cwnd mss tcp control avoidance slowstart
• Rate congestion packet tcp control aimd additive increase
• Tcp ack cumulative header field expected byte
• Tcp transmission control protocol
• N links l store forward transmission packet received
• Ssl layer secure sockets encrypted tcp connection integrity
• Socket messages combination dest-port server api application exchange
• Packets ip security types network attacks dissemination malware
• Flooding security dos types vulnerability attack bandwidth connection
• Obtained object executed user security types malware virus
• Security d)dos distributed denial service resources made inaccessible
• Time rtt round trip takes small data packet
• Forwarding output router functions table parts ip address
• Packets port bus ip interconnection router architecture switching
• Router architecture routing processor calculates forwarding tables copied
• Link layer router architecture output port construction buffer
• Port input link layer data switching rate router
• Plane ports router architecture construction control software routing
• Rfc request comments ietf standardization documents internet protocols
• Window size number segments ws sn rdt transmission
• Segment transmitted confirmed rdt principles stop-and-wait individually current
• Error retransmitted rdt pipelining approaches go-back-n n segments
• Segment transmitter rdt pipelining selective repeat receiver buffers
• Segments rdt pipelining go-back-n receiver discards packets correct
• Segment rdt channel bit errors packet loss ack
• Segment ack rdt nak-free protocol nak correctly received
• Rdt repeat segment problem ack nak faulty receiver
• Acknowledgment segment rdt introduction bit errors messages checksum
• Reliable messages segments rdt transport channel sender packs
• Reliable data protocol rdt transfer transmission common abbreviation
• Server process client initiates communication waiting connection
• Messages protocol sequence actions network format meaning events
• Number ports identifies process specifically socket host 16-bit
• Point presence pop node client isps connect
• Media physical transmission categories guided twisted pair coax
• Layer package types message application segment transport datagram
• Packet transmission l r delay time required transmit
• Switch packet router link-layer forwards incoming data
• Network layer types datagram packet-switched connectionless communication virtual-circuit
• Maximum network layer warranties delivery datagrams lost delay
• Network layer main functions forwarding move packets input
• Network layer logical host-to-host communication protocols run router
• Network edge hosts servers clients connected internet access
• Network core interconnected routers packet switches applications run
• Ip port source datagrams nat implementation outgoing replaced
• Port forwarding nat criticism problem devices local network
• Addresses nat reasons amount required reduced local network
• Network address local nat translation e.g router translates
• Disadvantages shared media simultaneous access bandwidth longer guaranteed
• Transfer server ascii messages mail smtp simple protocol
• Durch mail pop3 post office protocol version phasen
• Message mail format header lines z.b subject leere
• Mail messages user components agent client reading writing
• Messages mail imap internet access protocol organized server
• Mail access protocols pop imap webmail
• Lte long-term evolution siehe wireless access networks
• Advantages disadvantages offered layering structuring modularization implementation shift
• Communication switching modes basic packet-switched packet circuit-switched circuit
• Exchange point ixp inernet tier isps
• Service provider isp internet access network end systems
• Layer iso osi model application presentation session transport
• Header ip ipv6 length bytes addresses extension bit
• Ipv6 router packet ipv4 sends ip tunneling beherschen
• Ip header ipv6 version source destination address bits
• Connection package vc number forwarding virtual circuit networks
• Header length ip ipv4 version source destination address
• Ip fragmentation mtu maximum transmission unit fragment size
• Ip cidr classless interdomain routing address format a.b.c.d
• Packets arrive ip internet protocol transports data sender
• Structure isp provider tier level internet hierarchical client
• Ietf internet engineering task force organization deals technical
• Icmp message internet control protocol communication events network
• Names icann internet corporation assigned numbers assign addresses
• Tcp rtt connection transferred object duration types non-persistent
• Response status codes moved permanently bath request found
• Format status response analog request requestline replaced statusline
• Request method types post head put delete
• R n request format requestline method url version
• Input request form methods post body encoded url
• Transfer web hypertext protocol communication client server tcp
• Host end system connected network clients servers tv
• Fiber cable connection hfc hybrid coax alternative designation
• Gsm global system mobile communication
• Infrastructure direct fiber optical networks ftth technologies glass
• Ftth fiber home to the
• Commands filename ftp important user username pass password
• Connection transmission ftp works commands transmitted control file
• Response data connection ftp codes examples username password
• Ftp file transfer protocol transferring host server vice
• Address forwarding destination prefix datagram networks connections level
• Table forwarding router stores output link matches destination
• Fiber optic cable glass transmits light pulses high
• Dsl infrastructure central office dslam access multiplexer house
• Subscriber dsl digital line
• Server query inquiring level dns types iterated resolves
• Ip aliasing addresses dns services hostname translation host
• Dns disadvantages centralized solution single point failure data
• Dns local server default queries hosts answers request
• Server manage top-level domains dns hierarchy levels root
• Authoritative domain server canonical mail dns entries structure
• Dns domain system udp port application layer solves
• Dhcp process flow discover offer request ack messages
• Dynamic dhcp host configuration protocol allocation ip address
• Data delay transmission time transferred link arrived receiver
• Delay queuing time packet output buffer waits transmission
• Propagation delay signal time depending speed medium
• Delay processing set output link check packet bit
• Delay types processing queueing transmission propagation
• Cookie header line cookies components responsemessage set-cookie request
• Bit rate rm congestion cells control atm abr
• Congestion feedback router messages sender control approaches end-end
• Network congestion jam hosts send data fast lost
• Line coaxial cable concentric copper wires guided split
• Time frequency division multiplexing circuit switching methods wiring
• Circuit switching dedicated resources line reserved connection setup
• Cable modem infrastructure headend cmts termination system house
• Chunks peer sending bittorrent tit-for-tat sends check seconds
• Chunks bittorrent requesting rarest peer regularly asks neighbors
• Peers chunks bittorrent function files 256kb torrent group
• Rate constant bit packets fixed atm asynchronous transfer
• Network applications examples world wide web e-mail remote
• Application architecture p2p problems isp friendly low upload
• Server service application architecture p2p aspects end systems
• Application architecture main network client server peer-to-peer p2p
• D u rate time server max s f
• Application architecture client server always-on host permanent ip
• Access point base station funknetzwerken
• Network access physically connects end system router edge
• Link connection physical transmitter receiver necessarily line drateless

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