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11 Cards in this Set
- Front
- Back
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IPv6 Unicast addresses |
Loopback - ::1/128 or ::1 Unspecified address - ::/128 or :: Unique Local - FC00::/7 to FDFF::/7 Link Local - Start with FE80:: Multicast - Start with FF00:: Global unicast address - 2000 to 3FFF |
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OSI to TCP/IP Model |
Application - Application, Session, Presentation Transport - Transport Internet - Network Network Access - Data Link, Physical |
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ARP |
Network protocol used to determine the MAC address of a device. If an IP address is not mapped to a MAC address, the host sends out an ARP request (broadcast signal) to all hosts. The device with the IP address is the only one that sends an ARP reply with it's MAC address. |
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DHCP |
Network protocol that assigns network parameters to a device. Typically a Cisco router acts as a DHCP server. DHCP clients first discover all DHCP servers in range expecting DHCP server Offers as replies. The first Offer is taken by the client and it sends a Request to this server, which replies with a DHCP Acknowledgement packet. |
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Compressing IPv6 Addresses |
1. Four 0's can be replaced with a single 0 2. Omit leading 0's eg. 01AB = 1AB 3. "::" can replace a series of 0's. Can only be used once. |
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GNutella |
Operated on a query flooding-based protocol. Employed 5 packet types: Ping: Search for hosts Pong: Reply to ping Query: Search for file Query-hit: Reply to file search Push: Download request for firewalled servants |
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TCP Three-way handshake |
1. Client requests communication with server by sending a SYN segment with an Initial Sequence Number (ISN). 2. Server replies with an Acknowledgement (ACK) segment. It sends it's own SYN segment to verify connectivity. 3. Client receives ACK. It also receives the SYN segment and replies with an ACK of it's own. Connection is established. |
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Data Transfer Measures |
Bandwidth - Capacity of a medium to carry data . Can be measured in mb/s or kb/s etc. Throughput - Measure of the transfer of bits over a period of time. Affected by traffic amount, type and latency. Goodput - Throughput minus overhead traffic (aka usable data). |
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DNS |
Domain Name System. Translates hostnames into IP addresses. Host name resolution is read from right to left, starting with Root DNS servers (.com or .org) to Second-level domain names (.microsoft or .google) to SubDomain (www) to individual machine. |
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OSI Model |
Physical - Transports data over the network media as bits. Data Link - Manages transport of frames error-free between nodes via the physical layer. Network - Decides the pathing of data based on QoS and network conditions as well as ARP. Transport - Ensures messages are delivered (typically TCP or UDP). With TCP, it ensures the message is delivered successfully. Session - Establishes and manages communication sessions between processes on different machines. Presentation - Translates Application data into Networking form and vice versa. Application - Involves network access of applications wanting to send data over network. |
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Loopback - ::1/128 or ::1Unspecified address - ::/128 or ::Unique Local - FC00::/7 to FDFF::/7Link Local - Start with FE80::Multicast - Start with FF00::Global unicast address - 2000 to 3FFFApplication - Application, Session, PresentationTransport - TransportInternet - NetworkNetwork Access - Data Link, PhysicalNetwork protocol used to determine the MAC address of a device. If an IP address is not mapped to a MAC address, the host sends out an ARP request (broadcast signal) to all hosts. The device with the IP address is the only one that sends an ARP reply with it's MAC address.Network protocol that assigns network parameters to a device. Typically a Cisco router acts as a DHCP server. DHCP clients first discover all DHCP servers in range expecting DHCP server Offers as replies. The first Offer is taken by the client and it sends a Request to this server, which replies with a DHCP Acknowledgement packet.1. Four 0's can be replaced with a single 02. Omit leading 0's eg. 01AB = 1AB3. "::" can replace a series of 0's. Can only be used once.Operated on a query flooding-based protocol. Employed 5 packet types:Ping: Search for hostsPong: Reply to pingQuery: Search for fileQuery-hit: Reply to file searchPush: Download request for firewalled servants1. Client requests communication with server by sending a SYN segment with an Initial Sequence Number (ISN).2. Server replies with an Acknowledgement (ACK) segment. It sends it's own SYN segment to verify connectivity.3. Client receives ACK. It also receives the SYN segment and replies with an ACK of it's own. Connection is established.Bandwidth - Capacity of a medium to carry data . Can be measured in mb/s or kb/s etc.Throughput - Measure of the transfer of bits over a period of time. Affected by traffic amount, type and latency.Goodput - Throughput minus overhead traffic (aka usable data).Domain Name System. Translates hostnames into IP addresses. Host name resolution is read from right to left, starting with Root DNS servers (.com or .org) to Second-level domain names (.microsoft or .google) to SubDomain (www) to individual machine.Physical - Transports data over the network media as bits.Data Link - Manages transport of frames error-free between nodes via the physical layer.Network - Decides the pathing of data based on QoS and network conditions as well as ARP.Transport - Ensures messages are delivered (typically TCP or UDP). With TCP, it ensures the message is delivered successfully.Session - Establishes and manages communication sessions between processes on different machines.Presentation - Translates Application data into Networking form and vice versa.Application - Involves network access of applications wanting to send data over network. |
