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define the class b addresses first two octets are the network number as well as the last two octets are the host number 16382 probable blocks for
q show the class a addressesclass a addresses numerically the lowest use merely one byte to identify the class type and netid three bytes are
q define unicast - multicast and reserved addressesunicast multicast and reserved addresses unicast address - identifies a specific device
q what do you mean by addressingaddressing require to uniquely and universally identify every device to allow global communication internet address
q explain about virtual circuit switchingvirtual circuit switching - all packets belong to a message or session is preserved- single route is
q describe about packet switchingpacket switching - data are transmitted in separate units- called packet- packets are variable length blocks- the
q show the need for network layerneed for network layer - to solve the problem of delivery of data through several links- accountable for host to
q difficulties in internetwork communication- data arrive at interface f1 of s1- how does s1 know that they must be sent out from interface f3- there
q show the communication between switchescommunication between switches - must know which station belongs to which vlan as well as membership of
q show vlan membership and configurationvlan membership - may be classified by- switch port numbers- mac addresses- ip addresses- ip multicast
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