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q define the backbone networksbackbone networks - allows several lans to be connected- non of station is directly connected to the backbone- stations
q use of two-layer switch- performs at the physical as well as data link layer- a bridge with many ports designed for faster performance- allocates
issues with bridges connecting different lans - frame format - differences in frame structure fields used example ethernet to token ring- payload
q what is source routingsource routing - sender of packet defines bridges and routes that packet should take- complete path of bridge ids and
q basic working of ning tree ning tree - redundant bridges may be installed to provide reliability- to prevent infinite looping of packets
what is a management information base miba management information base is part of each snmp-managed device every snmp agent has the mib database that
what is the network time protocol a protocol that makes sures accurate local timekeeping with reference to radio and atomic clocks located on the
what is a pseudo ttya pseudo tty or false terminal enables external machines to connect by telnet or rlogin without a pseudo tty no connection can
what is a dns resource recorda resource record is an entry in a name servers database there are various types of resource records used containing
what is anonymous ftp and why would you use itanonymous ftp enables users to join to a host without using a valid login and password generally
what is the difference between interior and exterior neighbor gatewaysinterior gateways connect lans of one organization while exterior gateways
what is project 802it is a project begins by ieee to set standards that enable intercommunication among equipment from a variety of manufacturers it
what is kerberos in networkingit is an authentication service developed at the massachusetts institute of technology kerberos uses encryption to stop
what is ospfit is an internet routing protocol that scales well can route traffic with multiple paths and uses knowledge of an internets topology to
what is egp exterior gateway protocol it is the protocol the routers in neighboring autonomous systems use to recognize the set of networks that can
what is proxy arpis using a router to give answer arp requests this will be completed when the originating host believes that a destination is local
what is netbios and netbeui in networkingnetbios is a programming interface that permits io requests to be sent to and received from a remote
what is redirector in networkingredirector is software that intercepts file or prints io requests and changes them into network requests this comes
what is the different type of networking internetworking devicesrepeateralso called a regenerator it is an electronic device that operates only at
what is sapseries of interface points that permit other computers to interact with the other layers of network protocol stack is known as
what are the types of transmission media signals are usually transmitted over some transmission media that are broadly divided in to two
what is mac address in networkingthe address for a device as it is recognized at the media access control mac layer in the network architecture mac
what is difference among arp and rarpthe address resolution protocol arp is used to associate the 32 bit ip address with the 48 bit physical address
what are the data units at different layers of the tcp ip protocol suitethe data unit formed at the application layer is known as a message at the
what is protocol data unitthe data unit in the llc level is known as the protocol data unit pdu the pdu having of four fields a destination service