Chapter 2 Network Models 2.1
... Service point addressing: service port number Segmentation and reassembly. ...
... Service point addressing: service port number Segmentation and reassembly. ...
Operating Systems and Networks - Summaries
... RDT 2.1 ..............................................................................................................................................18 ...
... RDT 2.1 ..............................................................................................................................................18 ...
Threats in the Digital World
... uses the Internet Control Message Protocol (ICMP) echo request to determine if a host is up. “fping is different from ping in that you can specify any number of hosts on the command line, or specify a file containing the lists of hosts to ping. Instead of trying one host until it timeouts or rep ...
... uses the Internet Control Message Protocol (ICMP) echo request to determine if a host is up. “fping is different from ping in that you can specify any number of hosts on the command line, or specify a file containing the lists of hosts to ping. Instead of trying one host until it timeouts or rep ...
Chapter 1. Introduction to Data Communications
... • The receiver then stops sending ACKs. • The sender continues sending segments, but eventually will timeout on the lost segment and retransmit it. • Once the receiver receives the missing segment, it sends an ACK for that segment as well as for all the other segments with higher sequence numbers it ...
... • The receiver then stops sending ACKs. • The sender continues sending segments, but eventually will timeout on the lost segment and retransmit it. • Once the receiver receives the missing segment, it sends an ACK for that segment as well as for all the other segments with higher sequence numbers it ...
CCNA - Cisco Certified Network Associate
... It is very important to us at HN Networks that the students on our courses receive training that allows them to learn most effectively. In order to achieve this, we include exercises and end-of-section and end-of-day review questionnaires within the course. The goal of the reviews is to provide a me ...
... It is very important to us at HN Networks that the students on our courses receive training that allows them to learn most effectively. In order to achieve this, we include exercises and end-of-section and end-of-day review questionnaires within the course. The goal of the reviews is to provide a me ...
Representing Information
... IPv4: 32 bits written as 4 decimal numerals less than 256, e.g. 141.211.125.22 (UMich) 4 billion not enough IPv6: 128 bits written as 8 blocks of 4 hex digits each, e.g. AF43:23BC:CAA1:0045:A5B2:90AC:FFEE:8080 At edge, translate URLs --> IP addresses, e.g. umich.edu --> 141.211.125.22 Auth ...
... IPv4: 32 bits written as 4 decimal numerals less than 256, e.g. 141.211.125.22 (UMich) 4 billion not enough IPv6: 128 bits written as 8 blocks of 4 hex digits each, e.g. AF43:23BC:CAA1:0045:A5B2:90AC:FFEE:8080 At edge, translate URLs --> IP addresses, e.g. umich.edu --> 141.211.125.22 Auth ...
Network Routing Algorithms
... forwarding is used. – When a router receives a packet for a multicast group for which it has no subscribers (hosts or other routers), the router sends a PRUNE message to the source router. ...
... forwarding is used. – When a router receives a packet for a multicast group for which it has no subscribers (hosts or other routers), the router sends a PRUNE message to the source router. ...
Network Routing Algorithms
... forwarding is used. – When a router receives a packet for a multicast group for which it has no subscribers (hosts or other routers), the router sends a PRUNE message to the source router. ...
... forwarding is used. – When a router receives a packet for a multicast group for which it has no subscribers (hosts or other routers), the router sends a PRUNE message to the source router. ...
Internet Hacking
... Portqry.exe did not receive a response from the port. A process may or may not be listening on the port. By default, TCP ports are queried three times and UDP ports are queried once before a report indicates that the port is ...
... Portqry.exe did not receive a response from the port. A process may or may not be listening on the port. By default, TCP ports are queried three times and UDP ports are queried once before a report indicates that the port is ...
ch04-Networking
... Only one routing decision is made by network layer. All the packets arrive at the destination in the same order in which they were sent (Sequence number is not needed) Virtual Private Network (VPN) is based on connection oriented routing. Two computers believe they have a dedicated point to point ...
... Only one routing decision is made by network layer. All the packets arrive at the destination in the same order in which they were sent (Sequence number is not needed) Virtual Private Network (VPN) is based on connection oriented routing. Two computers believe they have a dedicated point to point ...
Base Driven Protocol
... RACOM has found a solution the market has been requesting for years: Base Driven protocol, which is primarily optimized for TCP/IP (IEC104), is also suitable for collision networks when a remote is not be heard by other remotes and/or different Rx and Tx frequencies are used. All packet transmission ...
... RACOM has found a solution the market has been requesting for years: Base Driven protocol, which is primarily optimized for TCP/IP (IEC104), is also suitable for collision networks when a remote is not be heard by other remotes and/or different Rx and Tx frequencies are used. All packet transmission ...
EECS 700: Network Security
... – It could send recursive queries to those name servers, thereby obliging them to find the answer and return it. – it could send iterative queries and possibly be referred to other name servers "closer" to the domain name it's looking for. – Current implementations are polite and do the latter, foll ...
... – It could send recursive queries to those name servers, thereby obliging them to find the answer and return it. – it could send iterative queries and possibly be referred to other name servers "closer" to the domain name it's looking for. – Current implementations are polite and do the latter, foll ...
slides - The Fengs
... – Program that promiscuously monitors and injects network traffic to/from machines it is protecting – Monitors net for SYN packets not acknowledged after a certain period of time – If it detects problems with a half-open connection it can • Send RST packets to the sender to release destination resou ...
... – Program that promiscuously monitors and injects network traffic to/from machines it is protecting – Monitors net for SYN packets not acknowledged after a certain period of time – If it detects problems with a half-open connection it can • Send RST packets to the sender to release destination resou ...
Congestion Control Without a Startup Phase
... determines how many data packets, D, can be transmitted as the minimum of the receiver’s advertised window and the amount of data queued locally for transmission. As a matter of course, the sender takes an RTT sample from the three-way handshake. The sender then paces the D packets over the first RT ...
... determines how many data packets, D, can be transmitted as the minimum of the receiver’s advertised window and the amount of data queued locally for transmission. As a matter of course, the sender takes an RTT sample from the three-way handshake. The sender then paces the D packets over the first RT ...
basics
... Types of Communications • Circuit Switching (reserve a slice of resources) • Frequency division multiplexing • Time division multiplexing • Packet switching • Virtual Circuits: routers keep per connection info • Datagrams: no per conn. Information • Connection oriented (state at end points, handsha ...
... Types of Communications • Circuit Switching (reserve a slice of resources) • Frequency division multiplexing • Time division multiplexing • Packet switching • Virtual Circuits: routers keep per connection info • Datagrams: no per conn. Information • Connection oriented (state at end points, handsha ...
Networking Theory (Part 1)
... which contain additional information that allows it to order packets and resend them if they go astray. ...
... which contain additional information that allows it to order packets and resend them if they go astray. ...
MIS 4850 Systems Security
... a) Windows Vista b) Windows XP Professional c) Windows NT d) Windows 2000 e) None of the above Explanation: With Win 95, Win 98, and Win Me, login password can be bypassed 3. Which of the following is true about Access cards that are designed for two-factor authentication? a) their PINs are usually ...
... a) Windows Vista b) Windows XP Professional c) Windows NT d) Windows 2000 e) None of the above Explanation: With Win 95, Win 98, and Win Me, login password can be bypassed 3. Which of the following is true about Access cards that are designed for two-factor authentication? a) their PINs are usually ...
CSE-555 Protocol Engineering
... Decrease the window by 1 for every timeout and increase it by 1 for every positive ack Decrease the window to ½ its current size for every timeout and increase by 1 for every N positive acks received Decrease the window to its min value of 1 on a timeout, and increase the window by 1 for every ...
... Decrease the window by 1 for every timeout and increase it by 1 for every positive ack Decrease the window to ½ its current size for every timeout and increase by 1 for every N positive acks received Decrease the window to its min value of 1 on a timeout, and increase the window by 1 for every ...
Securing TCP/IP
... The Internet Protocol (IP) is a network protocol that provides essential routing functions for all packets transiting a TCP/IP network. By this point in your computer science education, you’re probably familiar with the concept of how IP addresses uniquely identify network destinations. Each system ...
... The Internet Protocol (IP) is a network protocol that provides essential routing functions for all packets transiting a TCP/IP network. By this point in your computer science education, you’re probably familiar with the concept of how IP addresses uniquely identify network destinations. Each system ...
Network Routing Algorithms
... forwarding is used. – When a router receives a packet for a multicast group for which it has no subscribers (hosts or other routers), the router sends a PRUNE message to the source router. ...
... forwarding is used. – When a router receives a packet for a multicast group for which it has no subscribers (hosts or other routers), the router sends a PRUNE message to the source router. ...