Communications Model
... • The complexity of the communication task is reduced by using multiple protocol layers: • Each protocol is implemented independently • Each protocol is responsible for a specific subtask • Protocols are grouped in a hierarchy • A structured set of protocols is called a communications architecture o ...
... • The complexity of the communication task is reduced by using multiple protocol layers: • Each protocol is implemented independently • Each protocol is responsible for a specific subtask • Protocols are grouped in a hierarchy • A structured set of protocols is called a communications architecture o ...
Data Link Layer
... • Local area networks (LANs) typically connect computers within a building or a campus • Almost all LANs are broadcast networks • Typical topologies of LANs are bus or ring or star • We will work with Ethernet LANs. Ethernet has a bus or star (Wifi) topology. ...
... • Local area networks (LANs) typically connect computers within a building or a campus • Almost all LANs are broadcast networks • Typical topologies of LANs are bus or ring or star • We will work with Ethernet LANs. Ethernet has a bus or star (Wifi) topology. ...
Network_Layer
... The main design goals for Network Layer services: (see the book “Computer Networks by Tanenbaum” P345). ...
... The main design goals for Network Layer services: (see the book “Computer Networks by Tanenbaum” P345). ...
Kwang - Pill Sung
... Troubleshooting, diagnosing and resolving technical customer issues associated with company’s equipment on-site at the customer site. Replicating and testing customer configurations in a lab environment, maintaining and managing customer network monitoring systems, recreating, tracking, and verifyin ...
... Troubleshooting, diagnosing and resolving technical customer issues associated with company’s equipment on-site at the customer site. Replicating and testing customer configurations in a lab environment, maintaining and managing customer network monitoring systems, recreating, tracking, and verifyin ...
Document
... IP is a packet-switching network protocol. Information is exchanged between two hosts in the form of IP packets (IP datagrams). Each datagram is treated as a discrete unit - there are no "connections" between machines at the network layer. Connection services are provided by the higher-level p ...
... IP is a packet-switching network protocol. Information is exchanged between two hosts in the form of IP packets (IP datagrams). Each datagram is treated as a discrete unit - there are no "connections" between machines at the network layer. Connection services are provided by the higher-level p ...
Create a standard ACL that will deny traffic from 192
... answer is included so as to differentiate them. Assuming the ACL in the graphic is correctly applied to an interface, Graphic has 2 commands Access-list 147 deny tcp 172.16.0.0 0.0.255.255 any eq23 Access-list 147 permit any any First answer All traffic to network 172.16.0.0 will be denied. Assuming ...
... answer is included so as to differentiate them. Assuming the ACL in the graphic is correctly applied to an interface, Graphic has 2 commands Access-list 147 deny tcp 172.16.0.0 0.0.255.255 any eq23 Access-list 147 permit any any First answer All traffic to network 172.16.0.0 will be denied. Assuming ...
ppt
... Ethernet Frame Structure (cont.) • Each protocol layer needs to provide some hooks to upper layer protocols • Demultiplexing: identify which upper layer protocol packet belongs to • E.g., port numbers allow TCP/UDP to identify target application • Ethernet uses Type field ...
... Ethernet Frame Structure (cont.) • Each protocol layer needs to provide some hooks to upper layer protocols • Demultiplexing: identify which upper layer protocol packet belongs to • E.g., port numbers allow TCP/UDP to identify target application • Ethernet uses Type field ...
Networking - WordPress.com
... Client Server Cont…. In a client-server environment files are stored on a centralised, high speed file server that is made available to client PCs. Network access speeds are usually faster than those found on peer-to-peer networks, which is reasonable given the vast numbers of clients that this arc ...
... Client Server Cont…. In a client-server environment files are stored on a centralised, high speed file server that is made available to client PCs. Network access speeds are usually faster than those found on peer-to-peer networks, which is reasonable given the vast numbers of clients that this arc ...
Chapter 9 Slides - Hafr Al-Batin Community College (HBCC)
... switch copies the entire frame into its onboard buffers and computes the cyclic redundancy check (CRC). The frame is discarded if it contains a CRC error, or if it is a runt (less than 64 bytes including the CRC), or a giant (more than 1518 bytes including the CRC). If the frame does not contain any ...
... switch copies the entire frame into its onboard buffers and computes the cyclic redundancy check (CRC). The frame is discarded if it contains a CRC error, or if it is a runt (less than 64 bytes including the CRC), or a giant (more than 1518 bytes including the CRC). If the frame does not contain any ...
EZtouch GigE+
... QoS Testing The EZtouch GigE+ is the ideal for performing QoS verification of metro Ethernet networks. It offers VLAN priorities and specific settings (TOS etc.) helping service providers ensure QoS expectations are met. ...
... QoS Testing The EZtouch GigE+ is the ideal for performing QoS verification of metro Ethernet networks. It offers VLAN priorities and specific settings (TOS etc.) helping service providers ensure QoS expectations are met. ...
Document
... IP is a packet-switching network protocol. Information is exchanged between two hosts in the form of IP packets (IP datagrams). Each datagram is treated as a discrete unit - there are no "connections" between machines at the network layer. Connection services are provided by the higher-level protoco ...
... IP is a packet-switching network protocol. Information is exchanged between two hosts in the form of IP packets (IP datagrams). Each datagram is treated as a discrete unit - there are no "connections" between machines at the network layer. Connection services are provided by the higher-level protoco ...
Security Management System - Remote Client
... Security Management System – Remote Client In most of the deployment scenarios, the server application is hosted on a computer which is on the internal network of an enterprise. Hence it is not accessible from the client applications running on computers outside this internal enterprise network. Thi ...
... Security Management System – Remote Client In most of the deployment scenarios, the server application is hosted on a computer which is on the internal network of an enterprise. Hence it is not accessible from the client applications running on computers outside this internal enterprise network. Thi ...
Network Management - Department of Computer Science, HKBU
... Network Information Service (NIS) Network File Systems (NFS) ...
... Network Information Service (NIS) Network File Systems (NFS) ...
SOHO Networking
... The suffix need sufficient bits to permit each computer attached to a network to be assigned a unique suffix. Thus if the size of the network is larger, there should be more bits in the suffix. (8 bits for 256 computers, 9 bits for 512 computers, so on) ...
... The suffix need sufficient bits to permit each computer attached to a network to be assigned a unique suffix. Thus if the size of the network is larger, there should be more bits in the suffix. (8 bits for 256 computers, 9 bits for 512 computers, so on) ...
Fundamentals of Computer Networks ECE 478/578
... Allocates address blocks within their regions Allocated to Internet Service Providers and large institutions ...
... Allocates address blocks within their regions Allocated to Internet Service Providers and large institutions ...
notes - Academic Csuohio
... Bits coming in one link go out all other links at same rate All nodes connected to hub can collide with one another No frame buffering No CSMA/CD at hub: host NICs detect collisions ...
... Bits coming in one link go out all other links at same rate All nodes connected to hub can collide with one another No frame buffering No CSMA/CD at hub: host NICs detect collisions ...
Routers, Filtering, firewall, and NAT
... outbound ports are "open" • i.e. blocking port 6000, means that nothing can remotely talk to that port and the computer can't use that port to talk to a remote machine. – Can be configured for only outbound or only inbound as well. ...
... outbound ports are "open" • i.e. blocking port 6000, means that nothing can remotely talk to that port and the computer can't use that port to talk to a remote machine. – Can be configured for only outbound or only inbound as well. ...
NOS 2
... Both Active Directory and NDS are built on X.500 Lightweight Directory Access Protocol (LDAP) has less overhead than X.500 Easier ...
... Both Active Directory and NDS are built on X.500 Lightweight Directory Access Protocol (LDAP) has less overhead than X.500 Easier ...
ppt - Stanford Crypto group
... Limit certain kinds of traffic Can differentiate by host addr, protocol, etc Multi-Protocol Label Switching (MPLS) Label traffic flows at the edge of the network and let core routers identify the required class of service ...
... Limit certain kinds of traffic Can differentiate by host addr, protocol, etc Multi-Protocol Label Switching (MPLS) Label traffic flows at the edge of the network and let core routers identify the required class of service ...
RIP2
... Only Networks with longest path (Network diameter) of 15 hops Identifying Loops requires a lot of time ...
... Only Networks with longest path (Network diameter) of 15 hops Identifying Loops requires a lot of time ...
SIP Fast Track Guide MP-124 AC Powered
... You’ll also need the following (not supplied): 9 RJ-45 Ethernet crossover cable 9 RJ-45 Ethernet straight-through cable 9 Internet connection 9 VoIP provider 9 PSTN telephone provider 9 PC running a Web browser ...
... You’ll also need the following (not supplied): 9 RJ-45 Ethernet crossover cable 9 RJ-45 Ethernet straight-through cable 9 Internet connection 9 VoIP provider 9 PSTN telephone provider 9 PC running a Web browser ...
Chapter 21 PowerPoint Presentation
... • Create a VPN by using tunneling protocols such as PPTP or L2TP. ...
... • Create a VPN by using tunneling protocols such as PPTP or L2TP. ...
ARP: Address Resolution Protocol
... • Receive node can adds an MAC address entry for source station in its own cache • ARP traffic load ...
... • Receive node can adds an MAC address entry for source station in its own cache • ARP traffic load ...
William Stallings Data and Computer Communications
... Interaction between end system on ATM and end system on legacy LAN Interaction between stations on legacy LANs of same type Interaction between stations on legacy LANs of different types ...
... Interaction between end system on ATM and end system on legacy LAN Interaction between stations on legacy LANs of same type Interaction between stations on legacy LANs of different types ...