Exam 21: Internetwork Operation

In ordinary ________ transmission over an internet,in which each datagram has a unique destination network,the task of each router is to forward the datagram along the shortest path from that router to the destination network.

A membership query message is sent by a multicast router.

PIM defines two modes of operation: dense-mode protocol and ______ protocol.

A host or a router is a(n)_________ .

In IGMP _____ hosts could join a multicast group and routers used a timer to unsubscribe group members.

IGMP takes advantage of the broadcast nature of a LAN to provide an efficient technique for the exchange of information among multiple hosts and routers.

________ is a reason for using SDN domains.

With unicast transmission,the router may be required to forward two or more copies of an incoming datagram.

The sparse-mode protocol is appropriate for intra-AS multicast routing and may be viewed as a potential alternative to a multicast version of OSPF known as MOSPF.

A group of workstations that form a multicast group such that a transmission from any member is received by all other group members is _____________.

A general query is used to learn which groups have members on an attached network.

Each router must determine multicast routing paths on the basis of both source and destination addresses.

In a true multicast strategy the packet is replicated by routers only at branch points of the spanning tree.

IGMP _____ enabled a host to request to be unsubscribed from a group.

A(n)________ is a sequence of packets traversing a network that share a set of header field values.

The OpenFlow specification defines three types of tables: flow table,group table,and _______ table.

The current version of IGMP defines two message types: Membership Query and ________ .

________ is a consortium of software providers,content delivery networks,and networking equipment vendors whose purpose is to promote software-defined networking.

A ________ is a host or router that changes its point of attachment from one network or subnetwork to another.

A mobile node is assigned to a particular network,known as its ______ .