Ch. 17 Learning IPv4 Routes With OSPFv2 Flashcards
______ protocol is a set of messages, rules, and algorithms used by routers for the overall purpose of learning routes
Routing
____ add IP routes to their routing table using three methods: connected routes, static routes, and routes learned by using dynamic routing protocols.
Routers
____ protocol and ____ protocol refer to a protocol that defines a packet structure and logical addressing, allowing router to forward or route the packets.
Routed
Routable
The term _____ refers to a process that occurs when the topology changes- that is when either a router or link fails or comes back up again.
Convergence
IGP
Interior gateway protocols
EGP
Exterior gateway protocols
____ is a routing protocol that was designed and intended for use inside a single autonomous system AS
IGP (interior gateway protocols)
AS
Autonomous system
____ is a routing protocol that was designed and intended for use between different autonomous (AS) systems
EGP
An ___ is a network under the administrative control of a single organization
AS (autonomous system)
BGP
Border gateway protocol
Today ____ is the only EGP used
BGP (border gateway protocol)
ASN
Autonomous system number
Each AS can be assigned a number called an _____
ASN (autonomous system number)
The routing protocol _____ determines how the routing process does it’s job. It is the logic and processes used by different routing protocols to solve the problems of learning all routes, choosing the best route to each subnet
Algorithm
RIP
Routing information protocols
IGRP
Interior routing gateway protocol
IS-Is
Intermediate systems to intermediate systems
EIGRP
Enhanced interior gateway routing protocols
VSLAM
Variable length subnet masks
_____ distance is a number that denotes how believable an entire routing protocol is on a single router
Administrative
Routers using ___-state protocols need to collectively advertise practically every detail about the internetwork
Link
LSA
Link state advertisements
LDSB
Link state database
RID
Router identifier
A_____ interface is a virtual interface whose status code is always up/up
Loop back
Which o the following routing protocols are considered to use link-state logic? (Choose two) RIP-1 RIP-2 EIGRP OSPF Integrated IS-IS
OSPF
Integrated IS-IS
Which of the following routing protocols use a metric that is by default at least partially affected by link bandwidth? (Choose two) RIP1 RIP2 EIGRP OSPF
EIGRP
OSPF
Which of the following interior routing protocols support VSLAM? (Choose four) RIP1 RIP2 EIGRP OSPF integrated IS-IS
Not RIP1
Which of the following is true about how a router using a link state routing protocol chooses the best route to reach a subnet?
The router finds the best route in the link-state database
The router calculates the best route by running the SPF algorithm against the information in the link state database
The router compares the metrics listed for that subnet in the updates received from each neighbor and picks the best (lowest) metric route
The router uses the path that has the lowest hop count
The router calculates the best route by running the SPF algorithm against information in the link state database
OSPF runs an algorithm to calculate the currently best route. Which of the following terms refers to that algorithm? (Choose two) SPF Dual Feasible successor Dijkstra Good old common sense
SPF
Dijkstra
Which of the following 'network' commands, following the command 'router OSPF 1' tells this router to start using OSPF in interfaces whose IP addresses are 10.1.1.1, 10.1.100.1, and 10.1.120.1 Network 10.0.0.0 255.0.0.0 area 0 Network 10.0.0.0 0.255.255.255 area 0 Network 10.0.0.1 0.0.0.255 area 0 Network 10.0.0.1 0.0.255.255 area 0
Network 10.0.0.0 0.255.255.255 area 0
Which of the following 'network' commands following the command 'router OSPF 1' tells this router to start using OSPF on interface whose IP addresses are 10.1.1.1, 10.1.100.1, and 10.1.120.1 Network 0.0.0.0 255.255.255.255 area 0 Network 10.0.0.0 0.255.255.0 area 0 Network 10.1.1.0 0.x.1x.0 area 0 Network 10.1.1.0 255.0.0.0 area 0 Network 10.0.0.0 255.0.0.0. Area 0
Network 0.0.0.0 255.255.255.255 area 0
Which of the following commands list the OSPF neighbors off interface serial 0/0? (Choose two) Show IP OSPF neighbor Show IP OSPF neighbor brief Show IP neighbor Show IP interface Show IP OSPF neighbor serial 0/0
Show IP OSPF neighbor
Show IP OSPF neighbor serial 0/0