Chapter 5 Flashcards
TELNET
(Terminal Network) an application layer protocol used on the Internet or local area networks to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection
Well known ports
only assigned by the IANA * can only be used by the system or root processes and by programs that are executed by privileged users
Application Layer Protocols
designed to carry out specific purposes or functions
Authoritative name servers
attached to domain servers and responsible for answering requests received about the domain space they are part of.
routing metrics
used by a router to make routing decisions through a routing table
convergence
the time it takes for routing tables to update
ICMP
(Internet Control Message Protocol) checks to see if the data packets have successfully reached the destination
FTP
(File Transport Protocol) a standard network protocol used to transfer computer files from one host to another host over a TCP-based network, such as the Internet
Ping
a network administration utility that is used to test connectivity to specific nodes on a network and to measure the round-trip time it takes for a packet to get to a specific destination and back
Permanent host group
a host group with permanent IP addresses
IGP
(Interior Gateway Protocol) used for exchanging routing information between gateways (commonly routers) within an autonomous system
DNS
(Domain Name System) the protocol that converts URLs to IP addresses
OSPF
(Open Shortest Path First) gathers link state information from available routers and constructs a topology map of the network
RTP
(Real-Time Transport Protocol) a packet format for delivering audio and video over IP networks
protocol stack
all the protocols from a protocol suit that are currently being used to carry out specific functions of network communications within the computer
Neighbor table
contains information about the routers that are directly connected to the current router.
RFC
(Request For Comment) all networking standards and protocols are defined by these various documents
topology table
an aggregation of the routing tables of all routers connected to current router
EIGRP
(Enhanced Interior Gateway Routing Protocol) used on a computer network to help automate routing decisions and configuration
RIP
(Routing Information Protocol) implements a limit on the number of hops allowed in a path from source to destination
hop
one portion of the path between source and destination
Link state routing protocol
every node constructs a map of the connectivity to the network, in the form of a graph, showing which nodes are connected to which other nodes
ARP
(Address Resolution Protocol) responsible for determining what the MAC address is for the next hop and then adjust the frame accordingly so that the frame can be moved to the next hop
Transient host group
host group formed for a specific multicast and then disbanded after use
Dynamic or private ports
can be used at any time and are assigned dynamically by the system
hybrid routing protocols
uses distance-vector metrics-based method to determine the best route, while using link state to update the other routers
tracert
the Windows implementation of a trace route