William Stallings Data and Computer Communications
... Limit amount or rate of data Stop and wait: each PDU must be acknowledged before the next can be sent Credit systems: allow a number of PDUs to be ...
... Limit amount or rate of data Stop and wait: each PDU must be acknowledged before the next can be sent Credit systems: allow a number of PDUs to be ...
CS219: Advanced Topics in Internet Research
... – retain the same consistency semantics for shared files as if connected – availability and reliability as if connected – ACID (atomic/recoverability, consistent, isolated/ serializablity, durable) properties for transactions ...
... – retain the same consistency semantics for shared files as if connected – availability and reliability as if connected – ACID (atomic/recoverability, consistent, isolated/ serializablity, durable) properties for transactions ...
ppt
... • Receiver needs enough “transitions” to keep track of the transmit clock • Avoid receiver saturation • Create control symbols, besides regular data symbols. • E.g. start or end of frame, escape, ... • Error detection or error corrections. • Some codes are illegal so receiver can detect certain clas ...
... • Receiver needs enough “transitions” to keep track of the transmit clock • Avoid receiver saturation • Create control symbols, besides regular data symbols. • E.g. start or end of frame, escape, ... • Error detection or error corrections. • Some codes are illegal so receiver can detect certain clas ...
Fundamentals of Computer Networks ECE 478/578
... (one reliable, other unreliable) Use smallest number of channel abstractions FTP utilizes request/reply Video-on-demand uses message stream channel Both use a host-to-host communication protocol ...
... (one reliable, other unreliable) Use smallest number of channel abstractions FTP utilizes request/reply Video-on-demand uses message stream channel Both use a host-to-host communication protocol ...
TCPdump
... flags: S (SYN), F (FIN), P(PUSH), R(RST), . (no flags) Data-seqno: describes the portion of sequence space covered by the data in the packet Ack: sequence number of the next data Window: the number of byte of receive buffer space Urg: indicates there is “urgent” data in the packet Options: tcp optio ...
... flags: S (SYN), F (FIN), P(PUSH), R(RST), . (no flags) Data-seqno: describes the portion of sequence space covered by the data in the packet Ack: sequence number of the next data Window: the number of byte of receive buffer space Urg: indicates there is “urgent” data in the packet Options: tcp optio ...
LocationSeparation
... separate Routing Locators and Endpoint Identifiers to remove all identification related functionality from topology related information such as IP addresses. • Current implementations adopt IP as the communications endpoint. • New approaches have become known as Location-Identifier (L.I.) Separation ...
... separate Routing Locators and Endpoint Identifiers to remove all identification related functionality from topology related information such as IP addresses. • Current implementations adopt IP as the communications endpoint. • New approaches have become known as Location-Identifier (L.I.) Separation ...
ch13
... Under light load, the 5token bus introduces unnecessary delays because of the overhead. To access the bus, an NIU has to wait for the token to be passed around, even if no other NIU is attempting to access the bus. Thus, CSMA/CD is preferable under light loads. 13.17 (BL3) This is a research exerci ...
... Under light load, the 5token bus introduces unnecessary delays because of the overhead. To access the bus, an NIU has to wait for the token to be passed around, even if no other NIU is attempting to access the bus. Thus, CSMA/CD is preferable under light loads. 13.17 (BL3) This is a research exerci ...
The Network Layer
... copied but Dest seq number taken from its counter Hopcount is set to 0, Lifetime field controls how long the route is valid. At each intermediate node 1.No route to I is known, 2.Sequence number of I in the ROUTE REPLY packet is greater than the value in the routing table 3.The sequence numbers are ...
... copied but Dest seq number taken from its counter Hopcount is set to 0, Lifetime field controls how long the route is valid. At each intermediate node 1.No route to I is known, 2.Sequence number of I in the ROUTE REPLY packet is greater than the value in the routing table 3.The sequence numbers are ...
Fundamentals of Computer Networks ECE 478/578
... Network layer is intended to hide the different technologies on a link level and provide a transparent end to end routing service Transport layer provides end-to-end transport service to the application layer ...
... Network layer is intended to hide the different technologies on a link level and provide a transparent end to end routing service Transport layer provides end-to-end transport service to the application layer ...
IOSR Journal of Computer Engineering (IOSR-JCE) e-ISSN: 2278-0661,p-ISSN: 2278-8727 PP 37-41 www.iosrjournals.org
... communication has emerged as a new dimension of diversity to emulate the strategies designed for multiple antenna systems, since a wireless mobile device may not be able to support multiple transmit antennas due to size, cost, or hardware limitations. By exploiting the broadcast nature of the wirele ...
... communication has emerged as a new dimension of diversity to emulate the strategies designed for multiple antenna systems, since a wireless mobile device may not be able to support multiple transmit antennas due to size, cost, or hardware limitations. By exploiting the broadcast nature of the wirele ...
PRACTICE QUESTIONS ON RESOURCE ALLOCATION QUESTION 1: Internet Versus Station Wagon
... A famous maxim, sometimes attributed to Dennis Ritchie, says “Never underestimate the bandwidth of a station wagon full of tapes.” Suppose you need to deliver a large file between two computers that are 200 km apart and connected by a direct link. This question analyzes when it is faster to drive th ...
... A famous maxim, sometimes attributed to Dennis Ritchie, says “Never underestimate the bandwidth of a station wagon full of tapes.” Suppose you need to deliver a large file between two computers that are 200 km apart and connected by a direct link. This question analyzes when it is faster to drive th ...
Network forensics is the capture, recording, and analysis of
... network in his/her control, therefore a successful trace back requires the cooperation of a number of administrators. In IPv4 there is an option of ‘record route’. When this option is set, the routers in the path embed their IP addresses in the packet. Various researchers have suggested packet marki ...
... network in his/her control, therefore a successful trace back requires the cooperation of a number of administrators. In IPv4 there is an option of ‘record route’. When this option is set, the routers in the path embed their IP addresses in the packet. Various researchers have suggested packet marki ...
Chapter 10 Circuit and Packet Switching
... network terminating unit 1 (NT1) and up to eight addressable devices such as a computer or a telephone • T interface is the electrical interface between a network terminating unit 1 (NT1) and a network ...
... network terminating unit 1 (NT1) and up to eight addressable devices such as a computer or a telephone • T interface is the electrical interface between a network terminating unit 1 (NT1) and a network ...
Networking Concepts An Introduction to
... same network. Returning to the postal analogy, it would be similar to sending a letter to someone else who lives in the same town. The post office would get your letter and without sending it to any other post offices, would send it directly to the recipient. Conversely, routing takes place when the ...
... same network. Returning to the postal analogy, it would be similar to sending a letter to someone else who lives in the same town. The post office would get your letter and without sending it to any other post offices, would send it directly to the recipient. Conversely, routing takes place when the ...
«Performance Analysis for a New Medium Access Control Protocol I
... CW size for deferring changes whenever an idle slot is detected. Additional back off time regeneration for transmitting stations to avoid future collisions. Use much smaller minimum initial CW size and much larger maximum CW size than IEEE 802.11 MAC. Reduce the back off timers exponentially when a ...
... CW size for deferring changes whenever an idle slot is detected. Additional back off time regeneration for transmitting stations to avoid future collisions. Use much smaller minimum initial CW size and much larger maximum CW size than IEEE 802.11 MAC. Reduce the back off timers exponentially when a ...
SAMPLE TEST from past EXAMS
... SAMPLE TEST from past EXAMS ------------------------------------------------------------------------------------------------------------------(This is only a sample from previous exam to use as a guide. This semester the questions may also include fill in the blanks and shall also include different ...
... SAMPLE TEST from past EXAMS ------------------------------------------------------------------------------------------------------------------(This is only a sample from previous exam to use as a guide. This semester the questions may also include fill in the blanks and shall also include different ...
ppt - Courses
... telephony: - Requires establishment and teardown of circuit - Fixed bandwidth resources (e.g., 64kbps for voice channel) dedicated to each call, even if actual data transmission rate is lower - Not efficient for ‘bursty’ traffic sources - Low jitter (delay variations) important for real-time John Ch ...
... telephony: - Requires establishment and teardown of circuit - Fixed bandwidth resources (e.g., 64kbps for voice channel) dedicated to each call, even if actual data transmission rate is lower - Not efficient for ‘bursty’ traffic sources - Low jitter (delay variations) important for real-time John Ch ...