COMPUTER NETWORK QUESTIONS
COMPUTER NETWORK QUESTIONS
For purposes of routing, the Internet is divided into ___________.
A) wide area networks
B) autonomous networks
This is the correct answer.
C) autonomous systems
D) None of the choices are correct
Routing inside an autonomous system is referred to as ________ routing.
A) interdomain
This is the correct answer.
B) intradomain
C) out-of-domain
D) None of the choices are correct
Routing between autonomous systems is referred to as ______ routing.
This is the correct answer.
A) interdomain routing
B) intradomain routing
C) out-of-domain
D) None of the choices are correct
In ________, each node maintains a vector (table) of minimum distances to every node.
A) path vector
This is the correct answer.
B) distance vector
C) link state
D) None of the choices are correct
In distance vector routing, each node periodically shares its routing table with _________ and whenever erthe is a change.
A) every other node
This is the correct answer.
B) its immediate neighbors
C) one neighbor
D) None of the choices are correct
The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing.
This is the correct answer.
A) distance vector
B) link state
C) path vector
D) None of the choices are correct
Reed More Network Questions
The metric used by _______ is the hop count.
A) OSPF
This is the correct answer.
B) RIP
C) BGP
D) None of the choices are correct
In RIP, the ________ timer controls the advertising of regular update messages.
A) garbage collection
B) expiration
This is the correct answer.
C) periodic
D) None of the choices are correct
In RIP, the ________ timer is used to purge invalid routes from the table.
This is the correct answer.
A) garbage collection
B) expiration
C) periodic
D) None of the choices are correct
In RIP, the ________ timer controls the validity of the route.
A) garbage collection
This is the correct answer.
B) expiration
C) periodic
D) None of the choices are correct
RIP uses the services of _______.
A) TCP
This is the correct answer.
B) UDP
C) IP
D) None of the choices are correct
The _________ routing uses the Dijkstra algorithm to build a routing table.
A) distance vector
This is the correct answer.
B) link state
C) path vector
D) None of the choices are correct
The Open Shortest Path First (OSPF) protocol is an intradomain routing protocol based on _______ routing.
A) distance vector
This is the correct answer.
B) link state
C) path vector
D) None of the choices are correct
The _______ protocol allows the administrator to assign a cost, called the metric, to each route.
This is the correct answer.
A) OSPF
B) RIP
C) BGP
D) None of the choices are correct
In OSPF, a ________ link connects two routers without any other host or router in between.
This is the correct answer.
A) point-to-point
B) transient
C) stub
D) None of the choices are correct
In OSPF, a _______ link is a network with several routers attached to it.
A) point-to-point
This is the correct answer.
B) transient
C) stub
D) None of the choices are correct
In OSPF, a ________ link is a network is connected to only one router.
A) point-to-point
B) transient
This is the correct answer.
C) stub
D) None of the choices are correct
In OSPF, when the link between two routers is broken, the administration may create a _________ link between them using a longer path that probably goes through several routers.
A) point-to-point
B) transient
C) stub
This is the correct answer.
D) None of the choices are correct
In OSPF, a ________ defines the links of a true router.
A) network link
This is the correct answer.
B) router link
C) summary link to network
D) None of the choices are correct
In OSPF, a ________ defines the links of a network.
This is the correct answer.
A) network link
B) router link
C) summary link to network
D) None of the choices are correct
In OSPF, an area border router advertises a ____________ LSA.
A) network link
B) router link
This is the correct answer.
C) summary link to network
D) None of the choices are correct
OSPF uses the _______ message to create neighborhood relationships and to test the reachability of neighbors.
A) link state request
B) database description
C) link state update
This is the correct answer.
D) None of the choices are correct
In OSPF, the ________ message does not contain complete database information; it only gives an outline, the title of each line in the database.
A) link state request
This is the correct answer.
B) database description
C) link state update
D) None of the choices are correct
In OSPF, a _________ message is sent by a router that needs information about a specific route or routes.
This is the correct answer.
A) link state request
B) database description
C) link state update
D) None of the choices are correct
In ________ routing, we assume that there is one node (or more) in each autonomous system that acts on behalf of the entire autonomous system.
A) distant vector
This is the correct answer.
B) path vector
C) link state
D) None of the choices are correct
___________ is an interdomain routing protocol using path vector routing.
This is the correct answer.
A) BGP
B) RIP
C) OSPF
D) None of the choices are correct
BGP can have two types of sessions: _______ and ________ sessions.
A) E-BGP; A-BGP
B) I-BGP; C-BGP
This is the correct answer.
C) E-BGP; I-BGP
D) None of the choices are correct
To create a neighborhood relationship, a router running BGP sends a(n) ________ message.
This is the correct answer.
A) open
B) update
C) keepalive
D) None of the choices are correct
In BGP, the _______ message is used by a router to withdraw destinations that have been advertised previously, or to announce a route to a new destination, or both.
A) open
This is the correct answer.
B) update
C) keepalive
D) None of the choices are correct
The routers running the BGP protocols exchange _______ messages regularly to tell each other that they are alive.
A) open
B) update
This is the correct answer.
C) keepalive
D) None of the choices are correct
In BGP, a(n) _______ message is sent by a router whenever an error condition is detected or a router wants to close the connection.
A) open
B) update
C) keepalive
This is the correct answer.
D) None of the choices are correct
BGP messages are encapsulated in _______.
This is the correct answer.
A) TCP segments
B) UDP user datagrams
C) IP datagrams
D) None of the choices are correct
An area is _______.
This is the correct answer.
A) part of an AS
B) composed of at least two ASs
C) another term for an AS
D) None of the choices are correct
A one-to-all communication between one source and all hosts on a network is classified as a _______ communication.
A) unicast
B) multicast
This is the correct answer.
C) broadcast
D) None of the choices are correct
A one-to-many communication between one source and a specific group of hosts is classified as a _______ communication.
A) unicast
This is the correct answer.
B) multicast
C) broadcast
D) None of the choices are correct
A one-to-one communication between one source and one destination is classified as a _______ communication.
This is the correct answer.
A) unicast
B) multicast
C) broadcast
D) None of the choices are correct
In ______, the router forwards the received packet through only one of its interfaces.
This is the correct answer.
A) unicasting
B) multicasting
C) broadcasting
D) None of the choices are correct
In _______, the router may forward the received packet through several of its interfaces.
A) unicasting
This is the correct answer.
B) multicasting
C) broadcasting
D) None of the choices are correct
Emulation of ________ through ___________ is not efficient and may create long delays.
A) unicasting; multiple unicasting
This is the correct answer.
B) multicasting; multiple unicasting
C) broadcasting; multicasting
D) None of the choices are correct
In unicast routing, each router in the domain has a table that defines a ______ path tree to possible destinations.
A) average
B) longest
This is the correct answer.
C) shortest
D) None of the choices are correct
In multicast routing, each involved router needs to construct a ________ path tree for each group.
A) average
B) longest
This is the correct answer.
C) shortest
D) None of the choices are correct
In the _______ tree approach, each router needs to have one shortest path tree for each group.
A) group-shared
This is the correct answer.
B) source-based
C) destination-based
D) None of the choices are correct
In the group-shared tree approach, ________ is/are involved in multicasting.
This is the correct answer.
A) only the core router
B) all routers
C) only some routers
D) None of the choices are correct
Multicast link state routing uses the _______ tree approach.
This is the correct answer.
A) source-based
B) group-shared
C) destination-based
D) None of the choices are correct
The Multicast Open Shortest Path First (MOSPF) protocol is an extension of the OSPF protocol that uses multicast routing to create source-based trees. The protocol is based on _______ routing.
A) distance vector
This is the correct answer.
B) link state
C) path vector
D) None of the choices are correct
MOSPF is a _______ protocol.
This is the correct answer.
A) data-driven
B) command-driven
C) both data- and command-driven
D) None of the choices are correct
_________ broadcasts packets, but creates loops in the systems.
A) Forwarding
This is the correct answer.
B) Flooding
C) Backwarding
D) None of the choices are correct
In RPF, a router forwards only the copy that has traveled the _______ path from the source to the router.
This is the correct answer.
A) shortest
B) longest
C) average
D) None of the choices are correct
RPF eliminates the ________ in the flooding process.
A) forwarding
B) backwarding
C) flooding
This is the correct answer.
D) None of the choices are correct
RPB creates a shortest path _______ tree from the source to each destination.
A) unicast
B) multicast
This is the correct answer.
C) broadcast
D) None of the choices are correct
RPB guarantees that each destination receives _________ of the packet.
This is the correct answer.
A) one copy
B) no copies
C) multiple copies
D) None of the choices are correct
In ________, the multicast packet must reach only those networks that have active members for that grparticularoup.
A) RPF
B) RPB
This is the correct answer.
C) RPM
D) None of the choices are correct
______ adds pruning and grafting to _______ to create a multicast shortest path tree that supports dynamic membership changes.
This is the correct answer.
A) RPM; RPB
B) RPB; RPM
C) RPF: RPM
D) None of the choices are correct
__________ is an implementation of multicast distance vector routing. It is a source-based routing protocol, based on RIP.
A) MOSPF
This is the correct answer.
B) DVMRP
C) CBT
D) None of the choices are correct
DVMRP is a ________routing protocol, based on RIP.
This is the correct answer.
A) source-based
B) group-shared
C) destination-based
D) None of the choices are correct
Pruning and grafting are strategies used in _______.
A) RPF
B) RPB
This is the correct answer.
C) RPM
D) None of the choices are correct
A _______ message tells an upstream router to stop sending multicast messages for a specific group through a specific router.
A) weed
B) graft
This is the correct answer.
C) prune
D) None of the choices are correct
A _______ message tells an upstream router to start sending multicast messages for a specific group through a specific router.
A) weed
This is the correct answer.
B) graft
C) prune
D) None of the choices are correct
CBT is a ________ protocol that uses a core as the root of the tree.
A) source-based
This is the correct answer.
B) group-shared
C) destination-based
D) None of the choices are correct
PIM-DM is used in a _______ multicast environment.
This is the correct answer.
A) dense
B) sparse
C) dense or sparse
D) None of the choices are correct
PIM-SM is used in a _______multicast environment such as a WAN.
A) dense
This is the correct answer.
B) sparse
C) dense or sparse
D) None of the choices are correct
In _______, a logical tunnel is established by encapsulating the multicast packet inside a unicast packet.
A) UNIBONE
B) MULTBONE
This is the correct answer.
C) MBONE
D) None of the choices are correct
COMPUTER NETWORK QUESTIONS
For purposes of routing, the Internet is divided into ___________.
A) wide area networks
B) autonomous networks
This is the correct answer.
C) autonomous systems
D) None of the choices are correct
Routing inside an autonomous system is referred to as ________ routing.
A) interdomain
This is the correct answer.
B) intradomain
C) out-of-domain
D) None of the choices are correct
Routing between autonomous systems is referred to as ______ routing.
This is the correct answer.
A) interdomain routing
B) intradomain routing
C) out-of-domain
D) None of the choices are correct
In ________, each node maintains a vector (table) of minimum distances to every node.
A) path vector
This is the correct answer.
B) distance vector
C) link state
D) None of the choices are correct
In distance vector routing, each node periodically shares its routing table with _________ and whenever erthe is a change.
A) every other node
This is the correct answer.
B) its immediate neighbors
C) one neighbor
D) None of the choices are correct
The Routing Information Protocol (RIP) is an intradomain routing based on _________ routing.
This is the correct answer.
A) distance vector
B) link state
C) path vector
D) None of the choices are correct
Reed More Network Questions
The metric used by _______ is the hop count.
A) OSPF
This is the correct answer.
B) RIP
C) BGP
D) None of the choices are correct
In RIP, the ________ timer controls the advertising of regular update messages.
A) garbage collection
B) expiration
This is the correct answer.
C) periodic
D) None of the choices are correct
In RIP, the ________ timer is used to purge invalid routes from the table.
This is the correct answer.
A) garbage collection
B) expiration
C) periodic
D) None of the choices are correct
In RIP, the ________ timer controls the validity of the route.
A) garbage collection
This is the correct answer.
B) expiration
C) periodic
D) None of the choices are correct
RIP uses the services of _______.
A) TCP
This is the correct answer.
B) UDP
C) IP
D) None of the choices are correct
The _________ routing uses the Dijkstra algorithm to build a routing table.
A) distance vector
This is the correct answer.
B) link state
C) path vector
D) None of the choices are correct
The Open Shortest Path First (OSPF) protocol is an intradomain routing protocol based on _______ routing.
A) distance vector
This is the correct answer.
B) link state
C) path vector
D) None of the choices are correct
The _______ protocol allows the administrator to assign a cost, called the metric, to each route.
This is the correct answer.
A) OSPF
B) RIP
C) BGP
D) None of the choices are correct
In OSPF, a ________ link connects two routers without any other host or router in between.
This is the correct answer.
A) point-to-point
B) transient
C) stub
D) None of the choices are correct
In OSPF, a _______ link is a network with several routers attached to it.
A) point-to-point
This is the correct answer.
B) transient
C) stub
D) None of the choices are correct
In OSPF, a ________ link is a network is connected to only one router.
A) point-to-point
B) transient
This is the correct answer.
C) stub
D) None of the choices are correct
In OSPF, when the link between two routers is broken, the administration may create a _________ link between them using a longer path that probably goes through several routers.
A) point-to-point
B) transient
C) stub
This is the correct answer.
D) None of the choices are correct
In OSPF, a ________ defines the links of a true router.
A) network link
This is the correct answer.
B) router link
C) summary link to network
D) None of the choices are correct
In OSPF, a ________ defines the links of a network.
This is the correct answer.
A) network link
B) router link
C) summary link to network
D) None of the choices are correct
In OSPF, an area border router advertises a ____________ LSA.
A) network link
B) router link
This is the correct answer.
C) summary link to network
D) None of the choices are correct
OSPF uses the _______ message to create neighborhood relationships and to test the reachability of neighbors.
A) link state request
B) database description
C) link state update
This is the correct answer.
D) None of the choices are correct
In OSPF, the ________ message does not contain complete database information; it only gives an outline, the title of each line in the database.
A) link state request
This is the correct answer.
B) database description
C) link state update
D) None of the choices are correct
In OSPF, a _________ message is sent by a router that needs information about a specific route or routes.
This is the correct answer.
A) link state request
B) database description
C) link state update
D) None of the choices are correct
In ________ routing, we assume that there is one node (or more) in each autonomous system that acts on behalf of the entire autonomous system.
A) distant vector
This is the correct answer.
B) path vector
C) link state
D) None of the choices are correct
___________ is an interdomain routing protocol using path vector routing.
This is the correct answer.
A) BGP
B) RIP
C) OSPF
D) None of the choices are correct
BGP can have two types of sessions: _______ and ________ sessions.
A) E-BGP; A-BGP
B) I-BGP; C-BGP
This is the correct answer.
C) E-BGP; I-BGP
D) None of the choices are correct
To create a neighborhood relationship, a router running BGP sends a(n) ________ message.
This is the correct answer.
A) open
B) update
C) keepalive
D) None of the choices are correct
In BGP, the _______ message is used by a router to withdraw destinations that have been advertised previously, or to announce a route to a new destination, or both.
A) open
This is the correct answer.
B) update
C) keepalive
D) None of the choices are correct
The routers running the BGP protocols exchange _______ messages regularly to tell each other that they are alive.
A) open
B) update
This is the correct answer.
C) keepalive
D) None of the choices are correct
In BGP, a(n) _______ message is sent by a router whenever an error condition is detected or a router wants to close the connection.
A) open
B) update
C) keepalive
This is the correct answer.
D) None of the choices are correct
BGP messages are encapsulated in _______.
This is the correct answer.
A) TCP segments
B) UDP user datagrams
C) IP datagrams
D) None of the choices are correct
An area is _______.
This is the correct answer.
A) part of an AS
B) composed of at least two ASs
C) another term for an AS
D) None of the choices are correct
A one-to-all communication between one source and all hosts on a network is classified as a _______ communication.
A) unicast
B) multicast
This is the correct answer.
C) broadcast
D) None of the choices are correct
A one-to-many communication between one source and a specific group of hosts is classified as a _______ communication.
A) unicast
This is the correct answer.
B) multicast
C) broadcast
D) None of the choices are correct
A one-to-one communication between one source and one destination is classified as a _______ communication.
This is the correct answer.
A) unicast
B) multicast
C) broadcast
D) None of the choices are correct
In ______, the router forwards the received packet through only one of its interfaces.
This is the correct answer.
A) unicasting
B) multicasting
C) broadcasting
D) None of the choices are correct
In _______, the router may forward the received packet through several of its interfaces.
A) unicasting
This is the correct answer.
B) multicasting
C) broadcasting
D) None of the choices are correct
Emulation of ________ through ___________ is not efficient and may create long delays.
A) unicasting; multiple unicasting
This is the correct answer.
B) multicasting; multiple unicasting
C) broadcasting; multicasting
D) None of the choices are correct
In unicast routing, each router in the domain has a table that defines a ______ path tree to possible destinations.
A) average
B) longest
This is the correct answer.
C) shortest
D) None of the choices are correct
In multicast routing, each involved router needs to construct a ________ path tree for each group.
A) average
B) longest
This is the correct answer.
C) shortest
D) None of the choices are correct
In the _______ tree approach, each router needs to have one shortest path tree for each group.
A) group-shared
This is the correct answer.
B) source-based
C) destination-based
D) None of the choices are correct
In the group-shared tree approach, ________ is/are involved in multicasting.
This is the correct answer.
A) only the core router
B) all routers
C) only some routers
D) None of the choices are correct
Multicast link state routing uses the _______ tree approach.
This is the correct answer.
A) source-based
B) group-shared
C) destination-based
D) None of the choices are correct
The Multicast Open Shortest Path First (MOSPF) protocol is an extension of the OSPF protocol that uses multicast routing to create source-based trees. The protocol is based on _______ routing.
A) distance vector
This is the correct answer.
B) link state
C) path vector
D) None of the choices are correct
MOSPF is a _______ protocol.
This is the correct answer.
A) data-driven
B) command-driven
C) both data- and command-driven
D) None of the choices are correct
_________ broadcasts packets, but creates loops in the systems.
A) Forwarding
This is the correct answer.
B) Flooding
C) Backwarding
D) None of the choices are correct
In RPF, a router forwards only the copy that has traveled the _______ path from the source to the router.
This is the correct answer.
A) shortest
B) longest
C) average
D) None of the choices are correct
RPF eliminates the ________ in the flooding process.
A) forwarding
B) backwarding
C) flooding
This is the correct answer.
D) None of the choices are correct
RPB creates a shortest path _______ tree from the source to each destination.
A) unicast
B) multicast
This is the correct answer.
C) broadcast
D) None of the choices are correct
RPB guarantees that each destination receives _________ of the packet.
This is the correct answer.
A) one copy
B) no copies
C) multiple copies
D) None of the choices are correct
In ________, the multicast packet must reach only those networks that have active members for that grparticularoup.
A) RPF
B) RPB
This is the correct answer.
C) RPM
D) None of the choices are correct
______ adds pruning and grafting to _______ to create a multicast shortest path tree that supports dynamic membership changes.
This is the correct answer.
A) RPM; RPB
B) RPB; RPM
C) RPF: RPM
D) None of the choices are correct
__________ is an implementation of multicast distance vector routing. It is a source-based routing protocol, based on RIP.
A) MOSPF
This is the correct answer.
B) DVMRP
C) CBT
D) None of the choices are correct
DVMRP is a ________routing protocol, based on RIP.
This is the correct answer.
A) source-based
B) group-shared
C) destination-based
D) None of the choices are correct
Pruning and grafting are strategies used in _______.
A) RPF
B) RPB
This is the correct answer.
C) RPM
D) None of the choices are correct
A _______ message tells an upstream router to stop sending multicast messages for a specific group through a specific router.
A) weed
B) graft
This is the correct answer.
C) prune
D) None of the choices are correct
A _______ message tells an upstream router to start sending multicast messages for a specific group through a specific router.
A) weed
This is the correct answer.
B) graft
C) prune
D) None of the choices are correct
CBT is a ________ protocol that uses a core as the root of the tree.
A) source-based
This is the correct answer.
B) group-shared
C) destination-based
D) None of the choices are correct
PIM-DM is used in a _______ multicast environment.
This is the correct answer.
A) dense
B) sparse
C) dense or sparse
D) None of the choices are correct
PIM-SM is used in a _______multicast environment such as a WAN.
A) dense
This is the correct answer.
B) sparse
C) dense or sparse
D) None of the choices are correct
In _______, a logical tunnel is established by encapsulating the multicast packet inside a unicast packet.
A) UNIBONE
B) MULTBONE
This is the correct answer.
C) MBONE
D) None of the choices are correct
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