Slides - Nipun Arora
... that the packet goes through during its routing. – similar to IP Traceback output. ...
... that the packet goes through during its routing. – similar to IP Traceback output. ...
CS155: Computer and Network Security
... Manual packet sniffing is an interesting exercise, but programmatically capturing packets is much more powerful In this part of the assignment, you will write a program to reconstruct a sniffed FTP file ...
... Manual packet sniffing is an interesting exercise, but programmatically capturing packets is much more powerful In this part of the assignment, you will write a program to reconstruct a sniffed FTP file ...
Introduction - Jigar Pandya
... transmission between two parties. Circuit-switching is ideal when data must be transmitted quickly and must arrive in the same order in which it's sent. This is the case with most real-time data, such as live audio and video. Packet switching is more efficient and robust for data that can withstan ...
... transmission between two parties. Circuit-switching is ideal when data must be transmitted quickly and must arrive in the same order in which it's sent. This is the case with most real-time data, such as live audio and video. Packet switching is more efficient and robust for data that can withstan ...
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... determine which output links to send a packet. d. In addition to packet forwarding, routers decrement the TTL field in the IP header. e. The BGP protocol exchanges link weights. f. Congestion ...
... determine which output links to send a packet. d. In addition to packet forwarding, routers decrement the TTL field in the IP header. e. The BGP protocol exchanges link weights. f. Congestion ...
Switching
... • The sender, S, sends a request to the nearest switch with the address of the receiver, R. • That switch finds a dedicated channel between itself and the next switch in the sequence, and forwards the request through that channel. • The next switch creates a dedicated channel between itself and the ...
... • The sender, S, sends a request to the nearest switch with the address of the receiver, R. • That switch finds a dedicated channel between itself and the next switch in the sequence, and forwards the request through that channel. • The next switch creates a dedicated channel between itself and the ...
slides 1
... Summary (1/2) • Network: physical connection that allows two computers to communicate – Packet: unit of transfer, sequence of bits carried over the network ...
... Summary (1/2) • Network: physical connection that allows two computers to communicate – Packet: unit of transfer, sequence of bits carried over the network ...
Transmission Methods
... Used for public and private voice and data all over the world Used in IBM Systems Network Architecture (SNA) Establishes a dedicated path for the duration of the session Establishes a circuit ...
... Used for public and private voice and data all over the world Used in IBM Systems Network Architecture (SNA) Establishes a dedicated path for the duration of the session Establishes a circuit ...
Computer Networking
... – TCP/IP protocol suite was integrated into all of the popular operating systems – Companies began to transact commerce over the Internet – Residential Intenet access became very inexpensive – many wonderful application were developed for TCP/IP networks – low-cost high-speed LAN tech developed ...
... – TCP/IP protocol suite was integrated into all of the popular operating systems – Companies began to transact commerce over the Internet – Residential Intenet access became very inexpensive – many wonderful application were developed for TCP/IP networks – low-cost high-speed LAN tech developed ...
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 ...
Network Layer 2 - Faruk Hadziomerovic
... Fragmentation when the elementary data size is 1 byte. (a) Original packet, containing 10 data bytes. (b) Fragments after passing through a network with maximum packet size of 8 payload bytes plus header. (c) Fragments after passing through a size 5 gateway. ...
... Fragmentation when the elementary data size is 1 byte. (a) Original packet, containing 10 data bytes. (b) Fragments after passing through a network with maximum packet size of 8 payload bytes plus header. (c) Fragments after passing through a size 5 gateway. ...
NetworkingReview
... 8. What is the internet2? Give an example that motivates its creation and use. 9. Translate the IPv4 address 192.207.177.133 into 32-bit binary. 10. List 3 of the most commonly used internet application protocols, and tell or illustrate how they work. 11. Why is telnet considered an insecure protoco ...
... 8. What is the internet2? Give an example that motivates its creation and use. 9. Translate the IPv4 address 192.207.177.133 into 32-bit binary. 10. List 3 of the most commonly used internet application protocols, and tell or illustrate how they work. 11. Why is telnet considered an insecure protoco ...
Downlaod File
... When subnets are properly implemented, both the performance and security of networks can be improved. In Internet Protocol (IP) networking, devices on a subnet share contiguous ranges of IP address numbers. A mask (known as the subnet mask or network mask) defines the boundaries of an IP subnet. The ...
... When subnets are properly implemented, both the performance and security of networks can be improved. In Internet Protocol (IP) networking, devices on a subnet share contiguous ranges of IP address numbers. A mask (known as the subnet mask or network mask) defines the boundaries of an IP subnet. The ...
Network Layer (Congestion and QoS)
... We saw, resource reservation but how can the sender specify required resources ? Also, some applications are tolerant of occasional lapses is QoS. Also, apps might not know what its CPU requirements are. Hence routers must convert a set of specifications to resource requirements and then decide whet ...
... We saw, resource reservation but how can the sender specify required resources ? Also, some applications are tolerant of occasional lapses is QoS. Also, apps might not know what its CPU requirements are. Hence routers must convert a set of specifications to resource requirements and then decide whet ...
Introduction - Computer Sciences User Pages
... In ’93 M. Andreesen invented Mosaic The rest should be pretty familiar… CS 640 ...
... In ’93 M. Andreesen invented Mosaic The rest should be pretty familiar… CS 640 ...
Computer and multimedia networks (FM)
... error detection through a checksum. Much faster than TCP, however it is unreliable In most real-time multimedia applications (e.g., streaming video or audio), packets that arrive late are simply discarded. Higher level protocols can be used for retransmission, flow control, and congestion avoi ...
... error detection through a checksum. Much faster than TCP, however it is unreliable In most real-time multimedia applications (e.g., streaming video or audio), packets that arrive late are simply discarded. Higher level protocols can be used for retransmission, flow control, and congestion avoi ...
CSCI6268L10 - Computer Science
... TCP – Transmission Control Protocol • Stateful connections – Runs over IP just like UDP, but adds more than just ports – Establish a connection with listen() and connect() • IP and UDP were “stateless” protocols ...
... TCP – Transmission Control Protocol • Stateful connections – Runs over IP just like UDP, but adds more than just ports – Establish a connection with listen() and connect() • IP and UDP were “stateless” protocols ...
firewalls
... inside firewalls that belong to someone else Difficult to choose non-addressed address space ...
... inside firewalls that belong to someone else Difficult to choose non-addressed address space ...
Receiving data
... Calculate the checksum of the segment If the checksum is not OK → discard the segment ...
... Calculate the checksum of the segment If the checksum is not OK → discard the segment ...
CSCI6268L18 - Computer Science
... TCP – Transmission Control Protocol • Stateful connections – Runs over IP just like UDP, but adds more than just ports – Establish a connection with listen() and connect() • IP and UDP were “stateless” protocols ...
... TCP – Transmission Control Protocol • Stateful connections – Runs over IP just like UDP, but adds more than just ports – Establish a connection with listen() and connect() • IP and UDP were “stateless” protocols ...