class14
... application transport 5. Data flow begins network 4. Call connected data link 1. Initiate call physical ...
... application transport 5. Data flow begins network 4. Call connected data link 1. Initiate call physical ...
Chapter 1
... • I don’t think this would be widely accepted • What users expect (even demand) is seamless real-time mobility. • This has become known as ‘Session-mobility’ • The Internet was not designed to enable the implementation of this kind of provision. ...
... • I don’t think this would be widely accepted • What users expect (even demand) is seamless real-time mobility. • This has become known as ‘Session-mobility’ • The Internet was not designed to enable the implementation of this kind of provision. ...
Com811: Building The Mobile Internet
... • I don’t think this would be widely accepted • What users expect (even demand) is seamless real-time mobility. • This has become known as ‘Session-mobility’ • The Internet was not designed to enable the implementation of this kind of provision. ...
... • I don’t think this would be widely accepted • What users expect (even demand) is seamless real-time mobility. • This has become known as ‘Session-mobility’ • The Internet was not designed to enable the implementation of this kind of provision. ...
Wireless Local Area Networks
... Supports 1 and 2 Mbps data transport and applies two level - GFSK modulation* (Gaussian Frequency Shift Keying) 79 channels from 2.402 to 2.480 GHz ( in U.S. and most of EU countries) with 1 MHz channel space 78 hopping sequences with minimum 6 MHz hopping space, each sequence uses every 79 frequenc ...
... Supports 1 and 2 Mbps data transport and applies two level - GFSK modulation* (Gaussian Frequency Shift Keying) 79 channels from 2.402 to 2.480 GHz ( in U.S. and most of EU countries) with 1 MHz channel space 78 hopping sequences with minimum 6 MHz hopping space, each sequence uses every 79 frequenc ...
The core layer of the hierarchical design is the high
... • Typically, access layer switches use multiple links to connect to a distribution layer switch to ensure adequate bandwidth to accommodate the traffic generated on the access layer, and provide fault tolerance in case a link is lost. • Because distribution layer switches accept incoming traffic fro ...
... • Typically, access layer switches use multiple links to connect to a distribution layer switch to ensure adequate bandwidth to accommodate the traffic generated on the access layer, and provide fault tolerance in case a link is lost. • Because distribution layer switches accept incoming traffic fro ...
Internet Layer Protocols
... Transmission Control Protocol (TCP) • The most commonly used transport layer protocol • Connection-oriented and reliable • Establishment of a connection is a three-packet process between the source and destination host • Syn bit – Indicates that the packet is a request to negotiate a connection ...
... Transmission Control Protocol (TCP) • The most commonly used transport layer protocol • Connection-oriented and reliable • Establishment of a connection is a three-packet process between the source and destination host • Syn bit – Indicates that the packet is a request to negotiate a connection ...
MobileMAN Architecture and Protocols
... Example: MAC - Network Layers coordination Let us assume that the network layer through the routing mechanism has a (partial) knowledge of the network topology. We can also assume that this knowledge is typically accurate for a 1-2 hop distance The MAC layer could exploit this information to reduce ...
... Example: MAC - Network Layers coordination Let us assume that the network layer through the routing mechanism has a (partial) knowledge of the network topology. We can also assume that this knowledge is typically accurate for a 1-2 hop distance The MAC layer could exploit this information to reduce ...
Coding and Error Control
... IEEE 802.15 These slides are made available to faculty in PowerPoint form. Slides can be freely added, modified, and deleted to suit student needs. They represent substantial work on the part of the authors; therefore, we request the following. If these slides are used in a class setting or posted o ...
... IEEE 802.15 These slides are made available to faculty in PowerPoint form. Slides can be freely added, modified, and deleted to suit student needs. They represent substantial work on the part of the authors; therefore, we request the following. If these slides are used in a class setting or posted o ...
Intro to Wireless Mesh Networks - McMaster Computing and Software
... • Wireless Mesh Networks (WMN) are the networks in which each node can communicate directly with one or more peer nodes. • Different from traditional wireless networks (e.g. 802.11 WLANs) requiring centralized access points to mediate the wireless connection. • Each node operates not only as a host ...
... • Wireless Mesh Networks (WMN) are the networks in which each node can communicate directly with one or more peer nodes. • Different from traditional wireless networks (e.g. 802.11 WLANs) requiring centralized access points to mediate the wireless connection. • Each node operates not only as a host ...
Network Management
... Switches may operate at one or more OSI layers, including physical, data link, network, or transport (i.e., end-to-end). A device that operates simultaneously at more than one of these layers is called a multilayer switch, although use of the term is diminishing.[citation needed] In switches inten ...
... Switches may operate at one or more OSI layers, including physical, data link, network, or transport (i.e., end-to-end). A device that operates simultaneously at more than one of these layers is called a multilayer switch, although use of the term is diminishing.[citation needed] In switches inten ...
ppt
... • Netstumbler can not only monitor all active networks in the area, but it also integrates with a GPS to map AP’s ...
... • Netstumbler can not only monitor all active networks in the area, but it also integrates with a GPS to map AP’s ...
LECTURE 10
... Has multiple antennas at each end of the channel – provides spatial diversity OFDM part about the same as 802.11a,g – uses 64QAM with 5/6 FEC rate Combines 2 of the 20MHz 802.11a,g channels to achieve higher data rates ...
... Has multiple antennas at each end of the channel – provides spatial diversity OFDM part about the same as 802.11a,g – uses 64QAM with 5/6 FEC rate Combines 2 of the 20MHz 802.11a,g channels to achieve higher data rates ...
Ethernet - wmmhicks.com
... Designed with low overhead for speed – it does only what it needs to do. Connectionless – does not set up connection with destination before sending packet. Best effort (unreliable) no guarantee of safe delivery, no checking or resending. Independent of media, but does need to know maximum packet si ...
... Designed with low overhead for speed – it does only what it needs to do. Connectionless – does not set up connection with destination before sending packet. Best effort (unreliable) no guarantee of safe delivery, no checking or resending. Independent of media, but does need to know maximum packet si ...
Lecture19 - The University of Texas at Dallas
... of the Open Systems Interconnection effort at the International Organization for Standardization. • It is a way of sub-dividing a communications system into smaller parts called layers. A layer is a collection of conceptually similar functions that provide services to the layer above it and receives ...
... of the Open Systems Interconnection effort at the International Organization for Standardization. • It is a way of sub-dividing a communications system into smaller parts called layers. A layer is a collection of conceptually similar functions that provide services to the layer above it and receives ...
ppt
... architecture is that the dependency graph is acyclic. – This makes testing and verification simple. – Also the lower layer is in a consistent state w.r.t. the upper layers within each function. However, if upcalls are allowed, the system state can be changed by the upcalled procedure. ...
... architecture is that the dependency graph is acyclic. – This makes testing and verification simple. – Also the lower layer is in a consistent state w.r.t. the upper layers within each function. However, if upcalls are allowed, the system state can be changed by the upcalled procedure. ...
Part I: Introduction
... from host to host in the network, to deliver them to their destination. This layer involves each and every host and router in the network. We will study the key principles and algorithms of routing, with a focus on the Internet Protocol (IP) service model. 4: Network Layer ...
... from host to host in the network, to deliver them to their destination. This layer involves each and every host and router in the network. We will study the key principles and algorithms of routing, with a focus on the Internet Protocol (IP) service model. 4: Network Layer ...
OSI Model
... receiving applications to gain access to and use network services, such as: networked file transfer, message handling and database query processing ...
... receiving applications to gain access to and use network services, such as: networked file transfer, message handling and database query processing ...
B is the correct answer
... • Flooding: Switches flood unknown unicast frames (frames whose destination MAC addresses are not yet in the address table). Flooding means that the switch forwards copies of the frame out all ports, except the port on which the frame was received. ...
... • Flooding: Switches flood unknown unicast frames (frames whose destination MAC addresses are not yet in the address table). Flooding means that the switch forwards copies of the frame out all ports, except the port on which the frame was received. ...
CS 3013 Operating Systems I
... growing network segment Notebook computers and portable digital assistants (PDAs) to base Portable network for military use Wireless is not necessarily mobile ...
... growing network segment Notebook computers and portable digital assistants (PDAs) to base Portable network for military use Wireless is not necessarily mobile ...
Security In Wireless Sensor Networks
... requires that keys be set up among all end points and be incompatible with passive participation and local broadcast – link-layer cryptography with a network-wide shared key simplifies key setup and supports passive participation and local broadcast, but intermediate nodes might eavesdrop or alter m ...
... requires that keys be set up among all end points and be incompatible with passive participation and local broadcast – link-layer cryptography with a network-wide shared key simplifies key setup and supports passive participation and local broadcast, but intermediate nodes might eavesdrop or alter m ...
Lecture 1 - Lane Department of Computer Science and Electrical
... Demand for better networks is dramatically increasingTelecommunications companies are racing to get better computer networking capabilities to home, businesses and communities Has become the political center of attention – with government agencies pushing initiatives to get greater network connectiv ...
... Demand for better networks is dramatically increasingTelecommunications companies are racing to get better computer networking capabilities to home, businesses and communities Has become the political center of attention – with government agencies pushing initiatives to get greater network connectiv ...
PlantWeb University - Wireless 105 - Wireless topologies
... Devices in a star topology communicate only with the gateway – not with each other. The gateway then transmits the data to a central collection point, such as a control room – either directly, or by connecting to another network. The gateway also receives data from the central point and relays it to ...
... Devices in a star topology communicate only with the gateway – not with each other. The gateway then transmits the data to a central collection point, such as a control room – either directly, or by connecting to another network. The gateway also receives data from the central point and relays it to ...