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CCNA 200-301 > Dynamic Routing Protocols > Flashcards

Dynamic Routing Protocols Flashcards

1
Q

What 2 types of Routing Protocols make up IGP?

A

Distance Vector Routing Protocol and Link State Routing Protocol

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2
Q

What 2 protocols make up Distance Vector Routing Protocols?

A

RIP(v2) and EIGRP

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3
Q

What 2 protocols make up Link State Routing Protocols?

A

OSPF & ISIS

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4
Q

What type of Routing Protocol makes up EGP?

A

Path Vector Routing Protocol

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5
Q

What protocol makes up Path Vector Routing Protocol?

A

BGP

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6
Q

What is IGP used for?

A

Internal Routing within an organization

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7
Q

What EGP used for?

A

Routing between organizations over the internet

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8
Q

What is one of the main functions of Distance Vector Routing?

A

It is a dynamic routing algorithm in which each router computes distance between itself and each possible destination

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9
Q

What is convergence?

A

Convergence is when all routing protocol-specific information has been distributed to all routers participating in the routing protocol process.

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10
Q

What is Link State Routing Protocol?

A

It is a dynamic routing algorithm in which each router shares knowledge of its neighbors with every other router in the network.

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11
Q

What metric does OSPF use?

A

Cost

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12
Q

What does the cost metric do?

A

It uses bandwidth of the interface links to determine the best path for routing

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13
Q

What does the hop count metric do?

A

It calculates best path based on the number of hops

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14
Q

What metric does EIGRP use?

A

It uses cost and delay of links to calculate the metric

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15
Q

What is the maximum number of hops RIP uses by default?

A

15

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16
Q

What is the Administrative Distance of a Static Route

A

1

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17
Q

What is the Administrative Distance of a Connected Route?

A

0

18
Q

What is the Administrative Distance of External BGP?

A

20

19
Q

What is the Administrative Distance of EIGRP?

A

90

20
Q

What is the Administrative Distance of OSPF?

A

110

21
Q

What is the Administrative Distance of IS-IS?

A

115

22
Q

What is the Administrative Distance of RIP?

A

120

23
Q

What is a loopback interface?

A

It allows you to assign an IP Address to a Layer 3 device which is not tied to a physical interface

24
Q

What is a default Route Injection?

A

It allows you to configure one default route on an outbound Layer 3 device and then advertise that static route via whichever routing protocol you’re using so that other L3 devices learn about it automatically

25
Q

How many paths will RIP perform ECMP for?

A

4 by default

26
Q

Does RIPv1 support VLSM?

A

No

27
Q

Does RIPv2 use Broadcast or Multicast?

A

Multicast

28
Q

What is a Hello packet?

A

A Hello packet is sent out and listened for when a routing protocol is enabled on an interface. It tells other routers to start forming adjacencies

29
Q

What is a DBD Packet?

A

A DBD Packet is OSPF specific. It tells adjacent routers about the networks they know about

30
Q

What is an LSR?

A

It’s a Link State Request. If a router is missing information about any of the networks received in a DBD packet, it will the neighbor an LSR

31
Q

What is an LSA?

A

It’s a Link State Advertisement. This is a routing update that happens after a router sends an LSR

32
Q

What is an LSU?

A

Link State Update. This contains a list of Link State Updates that will be used during an upcoming flood

33
Q

What is LSAck?

A

It’s an acknowledgement that a router has received an LSA. If routers don’t an acknowledgement after sending a packet, they will resend it

34
Q

How many Process ID’s are normally configured in an OSPF network?

A

1

35
Q

Convert 255.255.255.0 into a Wildcard Mask

A

0.0.0.255

36
Q

Convert 255.0.0.0 into a Wildcard Mask

A

0.255.255.255

37
Q

Convert 255.255.0.0 into a Wildcard Mask

A

0.0.255.255

38
Q

What command will show OSPF router adjacencies formed?

A

show ip ospf neighbors

39
Q

What command will show the interfaces that OSPF is enabled on?

A

show ip ospf int brief

40
Q

What are the commands to configure a passive interface on an OSPF router?

A

router ospf 1

passive-interface {interface}

41
Q

What are the commands to enter a default route injection into OSPF?

A

ip route 0.0.0.0 0.0.0.0 {ip-address}
router ospf 1
default-information originate

42
Q

What is the default priority on a router (as it relates to DR and BDR)?

A

1

CCNA 200-301 (6 decks)

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