3-4-1_QoS Intro adap..
... – Multihop ad hoc network – Wireless Internet access (from W-LAN or ad hoc net) – Wireless mesh networks • The above scenarios are all challenging: – Channel parameter fluctuations (motion, obstacles, interference) – Change in S/N ratio at receiver – Mobility (path breaks, must be repatched, etc) – ...
... – Multihop ad hoc network – Wireless Internet access (from W-LAN or ad hoc net) – Wireless mesh networks • The above scenarios are all challenging: – Channel parameter fluctuations (motion, obstacles, interference) – Change in S/N ratio at receiver – Mobility (path breaks, must be repatched, etc) – ...
Chapter 1. Introduction to Data Communications
... Forward Error Correction (FEC) • Receiving device can correct incoming messages itself (without retransmission) • Requires extra corrective information – Sent along with the data – Allows data to be checked and corrected by the receiver – Amount of extra information: usually 50-100% of the data ...
... Forward Error Correction (FEC) • Receiving device can correct incoming messages itself (without retransmission) • Requires extra corrective information – Sent along with the data – Allows data to be checked and corrected by the receiver – Amount of extra information: usually 50-100% of the data ...
Chapter 1. Introduction to Data Communications
... Forward Error Correction (FEC) • Receiving device can correct incoming messages itself (without retransmission) • Requires extra corrective information – Sent along with the data – Allows data to be checked and corrected by the receiver – Amount of extra information: usually 50-100% of the data ...
... Forward Error Correction (FEC) • Receiving device can correct incoming messages itself (without retransmission) • Requires extra corrective information – Sent along with the data – Allows data to be checked and corrected by the receiver – Amount of extra information: usually 50-100% of the data ...
NAME: Computer Science 461 Midterm Exam March 14, 2014
... 1. Which are true about network switches and routers? a. Ethernet switches will always send received frames out all interfaces (except the one on which the packet was received). b. Both IP routers and Ethernet hubs drop packets when there is congestion. c. Ethernet switches learn the location of hos ...
... 1. Which are true about network switches and routers? a. Ethernet switches will always send received frames out all interfaces (except the one on which the packet was received). b. Both IP routers and Ethernet hubs drop packets when there is congestion. c. Ethernet switches learn the location of hos ...
Security in Computing - Pravin Shetty > Resume
... influences and somewhat controls the behavior of the IP layer, while actually using IP services to perform its tasks. ICMP monitors and communicates network control information between network participants. The IP layer also is impacted by special routing protocols like Routing Information Protocol ...
... influences and somewhat controls the behavior of the IP layer, while actually using IP services to perform its tasks. ICMP monitors and communicates network control information between network participants. The IP layer also is impacted by special routing protocols like Routing Information Protocol ...
UPnP & DLNA
... • The two most common reasons for delivery failures – Link transmission failures – Queue congestion at the receiver ...
... • The two most common reasons for delivery failures – Link transmission failures – Queue congestion at the receiver ...
Transmission Control Protocol (TCP)
... recovery In TCP-Reno, the first partial ACK will bring the sender out of the fast recovery phase Results in timeouts when there are multiple losses In TCP New-Reno, partial ACK is taken as an indication of another lost packet (which is immediately retransmitted). Sender comes out of fast recovery on ...
... recovery In TCP-Reno, the first partial ACK will bring the sender out of the fast recovery phase Results in timeouts when there are multiple losses In TCP New-Reno, partial ACK is taken as an indication of another lost packet (which is immediately retransmitted). Sender comes out of fast recovery on ...
Valiant Load-Balancing in Backbone Networks
... Low utilization—links over-provisioned for Uncertainty in traffic matrix the network is designed for Headroom for future growth Granularity of link capacity Prepare to take over when links or routers fail ...
... Low utilization—links over-provisioned for Uncertainty in traffic matrix the network is designed for Headroom for future growth Granularity of link capacity Prepare to take over when links or routers fail ...
Networking
... The Ethernet (IEEE 802.3) standard transmits data in little chunks called packets Break long messages into short “packets” Keeps one user from hogging a line Each packet is tagged with where it’s going ...
... The Ethernet (IEEE 802.3) standard transmits data in little chunks called packets Break long messages into short “packets” Keeps one user from hogging a line Each packet is tagged with where it’s going ...
sumit_basu5QA - CIS @ Temple University
... sequentially. If the service is reliable, the receiver confirms correct receipt of each frame by sending back acknowledgement frame. This layer also handles the issue of keeping a fast transmitter from drowning a slow receiver in data. The Network Layer controls the operation of the subnet. A key de ...
... sequentially. If the service is reliable, the receiver confirms correct receipt of each frame by sending back acknowledgement frame. This layer also handles the issue of keeping a fast transmitter from drowning a slow receiver in data. The Network Layer controls the operation of the subnet. A key de ...
Chap1-Introduction - Home
... • The most notable internet with a collaboration of more than hundred of thousands of interconnected networks (private individuals, organizations, etc.). • It is made up of many WANs and LANs joined by connecting devices and switching stations. • It has an hierarchical structure based on TCP/IP suit ...
... • The most notable internet with a collaboration of more than hundred of thousands of interconnected networks (private individuals, organizations, etc.). • It is made up of many WANs and LANs joined by connecting devices and switching stations. • It has an hierarchical structure based on TCP/IP suit ...
pptx - NOISE
... competence-challenged ISP in New York, is announcing our routes to the Internet. In English, that means that they are claiming that all our traffic should be passing through them, when of course it should not. Those portions of the net that are "closer" (in network topology terms) to Con Ed will sen ...
... competence-challenged ISP in New York, is announcing our routes to the Internet. In English, that means that they are claiming that all our traffic should be passing through them, when of course it should not. Those portions of the net that are "closer" (in network topology terms) to Con Ed will sen ...
Packet switching
... – A header with information, such as destination address, source address, time to live (TTL), protocol. – A payload: The data to be sent. This may be a packet of an upper layer. ...
... – A header with information, such as destination address, source address, time to live (TTL), protocol. – A payload: The data to be sent. This may be a packet of an upper layer. ...
22.3 Figure 22.1 Direct and indirect delivery 22.4 22
... Show the forwarding process if a packet arrives at R1 in Figure 22.6 with the destination address 180.70.65.140. Solution The router performs the following steps: 1. The first mask (/26) is applied to the destination address. The result is 180.70.65.128, which does not match the corresponding networ ...
... Show the forwarding process if a packet arrives at R1 in Figure 22.6 with the destination address 180.70.65.140. Solution The router performs the following steps: 1. The first mask (/26) is applied to the destination address. The result is 180.70.65.128, which does not match the corresponding networ ...
OSI Model - Pioneer Student
... frames. It performs error checking and retransmits frames not received correctly. It provides an error-free virtual channel to the Network Layer. The Data Link Layer is split into an upper sublayer, Logical Link Control (LLC), and a lower sublayer, Media Access Control (MAC). Bridgesconnect differen ...
... frames. It performs error checking and retransmits frames not received correctly. It provides an error-free virtual channel to the Network Layer. The Data Link Layer is split into an upper sublayer, Logical Link Control (LLC), and a lower sublayer, Media Access Control (MAC). Bridgesconnect differen ...
Networking and the Internet - Department of Mathematics and
... Each DNS server is the authoritative server for the names it manages If request contains name managed by receiving server, that server replies directly Otherwise, request must be forwarded to the appropriate authoritative server ...
... Each DNS server is the authoritative server for the names it manages If request contains name managed by receiving server, that server replies directly Otherwise, request must be forwarded to the appropriate authoritative server ...
SCORE: A Scalable Architecture for Implementing Resource
... - No need to clean up dangling state after failure - Can tolerate lost signaling packets • Signaling message need not be reliably transmitted - Easy to adapt to route changes ...
... - No need to clean up dangling state after failure - Can tolerate lost signaling packets • Signaling message need not be reliably transmitted - Easy to adapt to route changes ...
ppt - WMO
... Adjusting data flow and re-organizing operation. The principal data transmission node will be changed from a message basis to a file basis. The relevant adjustment will also be made on such aspects as data flow and operation organization , management and running . Establishing a close connection bet ...
... Adjusting data flow and re-organizing operation. The principal data transmission node will be changed from a message basis to a file basis. The relevant adjustment will also be made on such aspects as data flow and operation organization , management and running . Establishing a close connection bet ...