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q show the class d and class e addressesclass d and class e addresses class d - reserved for multicast addresses multicasting - transmission method
q describe the class c addresses the initial three octets are the network number as well as the last octet is the host number 2096896 blocks used
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