Introduction - Faculty of Computer Science
... with TDM and FDM But with TDM, each user can use the full capacity of the link during their turn ...
... with TDM and FDM But with TDM, each user can use the full capacity of the link during their turn ...
CCNA 1 Module 10 Routing Fundamentals and Subnets
... • A routed protocol allows the router to forward data between nodes on different networks. • In order for a protocol to be routable, it must provide the ability to assign a network number and a host number to each individual device. • These protocols also require a network mask in order to different ...
... • A routed protocol allows the router to forward data between nodes on different networks. • In order for a protocol to be routable, it must provide the ability to assign a network number and a host number to each individual device. • These protocols also require a network mask in order to different ...
3rd Edition, Chapter 5
... Ethernet Frame Structure (more) Addresses: 6 bytes if adapter receives frame with matching destination address, or with broadcast address (eg ARP packet), it passes data in frame to net-layer protocol otherwise, adapter discards frame ...
... Ethernet Frame Structure (more) Addresses: 6 bytes if adapter receives frame with matching destination address, or with broadcast address (eg ARP packet), it passes data in frame to net-layer protocol otherwise, adapter discards frame ...
Chapter 10 – Wireless LANs - Faculty Personal Homepage
... CSMA/CD is not used because a station is unable to listen to the channel for collisions while transmitting In IEEE 802.11, carrier sensing is performed at both the air interface, referred to as physical carrier sensing, and at the MAC sublayer, referred to as virtual carrier sensing Physical carrier ...
... CSMA/CD is not used because a station is unable to listen to the channel for collisions while transmitting In IEEE 802.11, carrier sensing is performed at both the air interface, referred to as physical carrier sensing, and at the MAC sublayer, referred to as virtual carrier sensing Physical carrier ...
Computer Networks (CS 778)
... Used when there is more than one router in network (eg, R1 default and R2 also) When R1 gets datagram for which it knows R2 would be better choice, Sends ICMP-redirect back to sending host, instructing to use R2 in future for that destination. Host then adds this info to its forwarding table. ...
... Used when there is more than one router in network (eg, R1 default and R2 also) When R1 gets datagram for which it knows R2 would be better choice, Sends ICMP-redirect back to sending host, instructing to use R2 in future for that destination. Host then adds this info to its forwarding table. ...
Chapter5
... Switch receives frame from from C notes in switch table that C is on interface 1 because D is not in table, switch forwards frame into interfaces 2 and 3 frame received by D ...
... Switch receives frame from from C notes in switch table that C is on interface 1 because D is not in table, switch forwards frame into interfaces 2 and 3 frame received by D ...
4th Edition: Chapter 1
... What’s the Internet: “nuts and bolts” view protocols control sending, ...
... What’s the Internet: “nuts and bolts” view protocols control sending, ...
Issues Facing IT Managers in Managing Enterprise-Wide Systems
... platforms interact with applications, it should be possible to Environment) which goes further than the Posix interface. move applications between different platforms that conform X/Open have also put together the X/Open Portability to the standards. • Interoperability - Different system platforms s ...
... platforms interact with applications, it should be possible to Environment) which goes further than the Posix interface. move applications between different platforms that conform X/Open have also put together the X/Open Portability to the standards. • Interoperability - Different system platforms s ...
congestion control
... Slow start is effective for initializing a connection This can grow infinitely however at some point in time resources will fill and a segment will get lost (congestion) ...
... Slow start is effective for initializing a connection This can grow infinitely however at some point in time resources will fill and a segment will get lost (congestion) ...
Firewalls
... – Since the outside router advertises the DMZ network only to the Internet, systems on the Internet do not have routes to the protected private network. This allows the network manager to ensure that the private network is "invisible," and that only selected systems on the DMZ are known to the Inter ...
... – Since the outside router advertises the DMZ network only to the Internet, systems on the Internet do not have routes to the protected private network. This allows the network manager to ensure that the private network is "invisible," and that only selected systems on the DMZ are known to the Inter ...
Chapter 3. QoS Mechanisms
... • An example of Layer 3 classification is IPTOS (Internet protocol type of service – IPv4 and IPv6 standard defined a prioritization field in the IP header RFC 1349 defined a TOS field in IPv4 header. The type of service field consists of a 3-bit precedence subfield, a 4-bit TOS subfield, and the fi ...
... • An example of Layer 3 classification is IPTOS (Internet protocol type of service – IPv4 and IPv6 standard defined a prioritization field in the IP header RFC 1349 defined a TOS field in IPv4 header. The type of service field consists of a 3-bit precedence subfield, a 4-bit TOS subfield, and the fi ...
Chapter 3 - Professor Dan Web
... Internet transport protocol “best effort” service, UDP segments may be: lost delivered out of order to app connectionless: no handshaking between UDP sender, receiver each UDP segment handled independently of others ...
... Internet transport protocol “best effort” service, UDP segments may be: lost delivered out of order to app connectionless: no handshaking between UDP sender, receiver each UDP segment handled independently of others ...
ppt - Computer Science & Engineering
... framing, link access: encapsulate datagram into frame, adding header, trailer channel access if shared medium “MAC” addresses used in frame headers to identify source, dest different from IP address! ...
... framing, link access: encapsulate datagram into frame, adding header, trailer channel access if shared medium “MAC” addresses used in frame headers to identify source, dest different from IP address! ...
Lab 12A: Intrusion Detection System (IDS)
... as the source and destination addresses to the policy set by the administrator. Most screening routers will also examine the packet at the next layer (the transport layer), which allows you to create policies based on TCP or UDP port, or ICMP type and code. ...
... as the source and destination addresses to the policy set by the administrator. Most screening routers will also examine the packet at the next layer (the transport layer), which allows you to create policies based on TCP or UDP port, or ICMP type and code. ...
Active Source routing protocol in Mobile Network
... environment, both phases are vulnerable to a variety of attacks. First, adversaries can disrupt the route discovery by impersonating the destination, by responding with stale or corrupted routing information, or by disseminating forged control traffic. This way, attackers can obstruct the propagatio ...
... environment, both phases are vulnerable to a variety of attacks. First, adversaries can disrupt the route discovery by impersonating the destination, by responding with stale or corrupted routing information, or by disseminating forged control traffic. This way, attackers can obstruct the propagatio ...
Link Layer
... Switch receives frame from from C notes in switch table that C is on interface 1 because D is not in table, switch forwards frame into interfaces 2 and 3 frame received by D ...
... Switch receives frame from from C notes in switch table that C is on interface 1 because D is not in table, switch forwards frame into interfaces 2 and 3 frame received by D ...
Virtual LANs - NET 331 and net 221
... Is a router, but a faster and more sophisticated. •The switching fabric in a three-layer switch allows faster table lookup and forwarding. •We can use the terms router and three-layer switch ...
... Is a router, but a faster and more sophisticated. •The switching fabric in a three-layer switch allows faster table lookup and forwarding. •We can use the terms router and three-layer switch ...
LAN BASICS
... The D-Link DWL-650 is an IEEE 802.11b compliant PC Card Type-II 11Mbps wireless LAN adapter. The DWL-650 will operate in 2.4 GHz Direct Sequence Spread Spectrum (DSSS) for wireless networks in the home or office environment. It is designed to operate in 3.3V or 5.0V DC slots. In addition, the DWL-65 ...
... The D-Link DWL-650 is an IEEE 802.11b compliant PC Card Type-II 11Mbps wireless LAN adapter. The DWL-650 will operate in 2.4 GHz Direct Sequence Spread Spectrum (DSSS) for wireless networks in the home or office environment. It is designed to operate in 3.3V or 5.0V DC slots. In addition, the DWL-65 ...
The Internet Network layer: IP Addressing
... time to upper Internet layer live checksum 32 bit source IP address 32 bit destination IP address Options (if any) ...
... time to upper Internet layer live checksum 32 bit source IP address 32 bit destination IP address Options (if any) ...
Lecture 1
... • Open Systems Interconnection Model – End to End Layers: • 7 – Application: interfaces directly with the user • 6 – Presentation: provides data independence (different representation of numbers, network byte order) ...
... • Open Systems Interconnection Model – End to End Layers: • 7 – Application: interfaces directly with the user • 6 – Presentation: provides data independence (different representation of numbers, network byte order) ...
circuit-level gateway
... • In this situation, an intermediate system can be plugged between the private network and the public network to establish a controlled link, and to erect a security wall or perimeter • The aim of the intermediate system is to protect the private network from network-based attacks that may originate ...
... • In this situation, an intermediate system can be plugged between the private network and the public network to establish a controlled link, and to erect a security wall or perimeter • The aim of the intermediate system is to protect the private network from network-based attacks that may originate ...
Internet protocol suite
The Internet protocol suite is the computer networking model and set of communications protocols used on the Internet and similar computer networks. It is commonly known as TCP/IP, because among many protocols, the Transmission Control Protocol (TCP) and the Internet Protocol (IP) is the accepted and most widely used protocol in Internet. Often also called the Internet model, it was originally also known as the DoD model, because the development of the networking model was funded by DARPA, an agency of the United States Department of Defense.TCP/IP provides end-to-end connectivity specifying how data should be packetized, addressed, transmitted, routed and received at the destination. This functionality is organized into four abstraction layers which are used to sort all related protocols according to the scope of networking involved. From lowest to highest, the layers are the link layer, containing communication technologies for a single network segment (link); the internet layer, connecting hosts across independent networks, thus establishing internetworking; the transport layer handling host-to-host communication; and the application layer, which provides process-to-process application data exchange.The TCP/IP model and related protocol models are maintained by the Internet Engineering Task Force (IETF).