CH5_PhysicalLayer
... connections. Moving from a wired connection to a wireless connection results in the ability to connect to a network without having a physical connection. Electromagnetic waves (radio waves) can move through space. The number of oscillations per second is called the frequency (f) and is measure ...
... connections. Moving from a wired connection to a wireless connection results in the ability to connect to a network without having a physical connection. Electromagnetic waves (radio waves) can move through space. The number of oscillations per second is called the frequency (f) and is measure ...
Network
... • Datalink layer ensures reliable transfer of data across the physical medium. It also provides access control to the media in the case of local area networks. Examples are High-level Data Link Control (HDLC), LLC and SDLC • Network layer provides the upper layers with independence from the switchin ...
... • Datalink layer ensures reliable transfer of data across the physical medium. It also provides access control to the media in the case of local area networks. Examples are High-level Data Link Control (HDLC), LLC and SDLC • Network layer provides the upper layers with independence from the switchin ...
Internet Protocols - NYU Computer Science Department
... max number remaining hops (decremented at each router) upper layer protocol to deliver payload to ...
... max number remaining hops (decremented at each router) upper layer protocol to deliver payload to ...
Fiber Optic Communications
... • Contains the matrix of information to be transmitted (783 bytes) ...
... • Contains the matrix of information to be transmitted (783 bytes) ...
Introduction
... • The hardware interfaces (physical level) may be: a. voltages, b. impedance, and c. mechanical dimensions. • Bottom three layers - Communications Subnet. They are: 1. the Physical Layer, (is hardware) 2. the Data Link Layer (DLL), (can be a mixture of hardware and software). 3. the Network Layer. T ...
... • The hardware interfaces (physical level) may be: a. voltages, b. impedance, and c. mechanical dimensions. • Bottom three layers - Communications Subnet. They are: 1. the Physical Layer, (is hardware) 2. the Data Link Layer (DLL), (can be a mixture of hardware and software). 3. the Network Layer. T ...
ISM 3410 Telecomm and Networking in Business
... – selects the route (if more than one is availble) the transmission will take between two devices – converts user addressing that is meaningful to network software and hardware – controls the flow of messages so that it will not over/under run of the speed of other devices – prevents the loss or dup ...
... – selects the route (if more than one is availble) the transmission will take between two devices – converts user addressing that is meaningful to network software and hardware – controls the flow of messages so that it will not over/under run of the speed of other devices – prevents the loss or dup ...
NwksTCPIP
... A set of rules governing the format and meaning of the frames, packets or messages exchanged by peer entities. An implementation hidden from the user layer. ...
... A set of rules governing the format and meaning of the frames, packets or messages exchanged by peer entities. An implementation hidden from the user layer. ...
IP spoofing - University Of Worcester
... IP addresses from the internal network… In addition, block the following private IP, illegal and unroutable addresses: ...
... IP addresses from the internal network… In addition, block the following private IP, illegal and unroutable addresses: ...
Chapter 15 Local Area Networks
... • 802.11 physical and MAC layers subject to unreliability • Noise, interference, and other propagation effects result in loss of frames • Even with error-correction codes, frames may not successfully be received • Can be dealt with at a higher layer, such as TCP — However, retransmission timers at h ...
... • 802.11 physical and MAC layers subject to unreliability • Noise, interference, and other propagation effects result in loss of frames • Even with error-correction codes, frames may not successfully be received • Can be dealt with at a higher layer, such as TCP — However, retransmission timers at h ...
Internet:Overview - CSE Labs User Home Pages
... establishment (which can add delay) • simple: no connection state at sender, receiver • small segment header • no congestion control: UDP can blast away as fast as desired ...
... establishment (which can add delay) • simple: no connection state at sender, receiver • small segment header • no congestion control: UDP can blast away as fast as desired ...
class14
... Analogous to the transport-layer services, but: Service: host-to-host Host has no choice: network provides one or the other Implementation: in the core ...
... Analogous to the transport-layer services, but: Service: host-to-host Host has no choice: network provides one or the other Implementation: in the core ...
Powerpoint format - Department of Computer and Information
... Dealing with complex systems: explicit structure allows identification, ...
... Dealing with complex systems: explicit structure allows identification, ...
Week six - Personal Web Server
... Each signal contains the source MAC address, source IP address, destination MAC address, and destination IP address Only the device with matching destination IP address, and destination MAC address can copy the data and pass it to higher layer; Other devices with non-matching IP address, or non-matc ...
... Each signal contains the source MAC address, source IP address, destination MAC address, and destination IP address Only the device with matching destination IP address, and destination MAC address can copy the data and pass it to higher layer; Other devices with non-matching IP address, or non-matc ...
Chapter 15 Local Area Networks
... • 802.11 physical and MAC layers subject to unreliability • Noise, interference, and other propagation effects result in loss of frames • Even with error-correction codes, frames may not successfully be received • Can be dealt with at a higher layer, such as TCP — However, retransmission timers at h ...
... • 802.11 physical and MAC layers subject to unreliability • Noise, interference, and other propagation effects result in loss of frames • Even with error-correction codes, frames may not successfully be received • Can be dealt with at a higher layer, such as TCP — However, retransmission timers at h ...
Transport Layer - Rose
... segments may be: lost delivered out of order to app connectionless: no handshaking between UDP sender, receiver each UDP segment handled independently of others ...
... segments may be: lost delivered out of order to app connectionless: no handshaking between UDP sender, receiver each UDP segment handled independently of others ...
Chapter 15 Local Area Networks
... • 802.11 physical and MAC layers subject to unreliability • Noise, interference, and other propagation effects result in loss of frames • Even with error-correction codes, frames may not successfully be received • Can be dealt with at a higher layer, such as TCP — However, retransmission timers at h ...
... • 802.11 physical and MAC layers subject to unreliability • Noise, interference, and other propagation effects result in loss of frames • Even with error-correction codes, frames may not successfully be received • Can be dealt with at a higher layer, such as TCP — However, retransmission timers at h ...
P2P Protocols
... Network layer solution Internet routers responsible for multicasting ◦ Group membership: remember group members for each multicast session ◦ Multicast routing: route data to members ...
... Network layer solution Internet routers responsible for multicasting ◦ Group membership: remember group members for each multicast session ◦ Multicast routing: route data to members ...
VLANS and Other Hardware
... • For most switches there is not enough capacity in the switching fabric / backplane to support all ports if they become active so the switch forms groups of connections and assigns capacity using time division multiplexing. • This means that the switch no longer guarantees simultaneous transmission ...
... • For most switches there is not enough capacity in the switching fabric / backplane to support all ports if they become active so the switch forms groups of connections and assigns capacity using time division multiplexing. • This means that the switch no longer guarantees simultaneous transmission ...
VLANS Presentation
... • For most switches there is not enough capacity in the switching fabric / backplane to support all ports if they become active so the switch forms groups of connections and assigns capacity using time division multiplexing. • This means that the switch no longer guarantees simultaneous transmission ...
... • For most switches there is not enough capacity in the switching fabric / backplane to support all ports if they become active so the switch forms groups of connections and assigns capacity using time division multiplexing. • This means that the switch no longer guarantees simultaneous transmission ...
Document
... them will be denied permission for lack of bandwidth, even if some of the users who have been assigned a frequency band hardly ever transmit or receive anything. – Inefficiency: assuming that the number of users could somehow be held constant at N, when some users are quiescent, their bandwidth is s ...
... them will be denied permission for lack of bandwidth, even if some of the users who have been assigned a frequency band hardly ever transmit or receive anything. – Inefficiency: assuming that the number of users could somehow be held constant at N, when some users are quiescent, their bandwidth is s ...
Tuesday, February 7, 2007 (Intro to the Network
... Many low-bandwidth legs share a high-bandwidth common bus. Typically one leg, has a very high bandwidth – consider it to be the uplink. Imagine several floors or departments, each of which has its own leg, and then one leg going out to an intranet or the Internet. Each port on the switch forms its o ...
... Many low-bandwidth legs share a high-bandwidth common bus. Typically one leg, has a very high bandwidth – consider it to be the uplink. Imagine several floors or departments, each of which has its own leg, and then one leg going out to an intranet or the Internet. Each port on the switch forms its o ...