Multicast

Question 1

IGMPv1 Query Interval

Answer 1

60 seconds

Question 2

IGMPv2 Query Interval

Answer 2

60 seconds

Question 3

IGMPv3 Query Interval

Answer 3

60 seconds

Question 4

IGMPv2 Query Timeout

Answer 4

120 seconds

Question 5

IGMPv3 Query Timeout

Answer 5

120 seconds

Question 6

which IGMP versions have querier elections?

Answer 6

IGMPv2 & IGMPv3

Question 7

Which IGMP versions have membership report suppression?

Answer 7

IGMPv1 & IGMPv2

Question 8

Which IGMP versions have group specific queries?

Answer 8

IGMPv2 & IGMPv3

Question 9

Which IGMP versions have leave group messages?

Answer 9

IGMPv2 & IGMPv3

Question 10

Multicast IPv4 space?

Answer 10

224.0.0.0-239.255.255.255

Question 11

Source Specific Multicast (SSM) range?

Answer 11

232.0.0.0/8

Question 12

first 24 bits of multicast MAC?

Answer 12

01-00-5e and the first bit of the last 24 bits is always 0

Question 13

Link local multicast range?

Answer 13

224.0.0.0/24

Question 14

GLOP Range

Answer 14

233.0.0.0/8

Question 15

administratively scoped multicast range

Answer 15

239.0.0.0/8

Question 16

All OSPF routers

Answer 16

224.0.0.5

FF02::5

Question 17

All OSPF DR routers

Answer 17

224.0.0.6

FF02::6

Question 18

All EIGRP routers

Answer 18

224.0.0.10

FF02::a

Question 19

all systems on this subnet

Answer 19

224. 0.0.1

ff02: :1

Question 20

All routers on this subnet

Answer 20

224. 0.0.2

ff02: :2

Question 21

Where are IGMP query messages sent?

Answer 21

224.0.0.1 with TTL=1

Question 22

How is active querier elected?

Answer 22

Lowest IP on subnet

Question 23

destination address of IGMPv3 reports?

Answer 23

224.0.0.22

Question 24

ALL PIM Routers IP?

Answer 24

224.0.0.13

Question 25

Cisco RP Announce IP?

Answer 25

224.0.1.39

Question 26

Cisco RP Discovery IP?

Answer 26

224.0.1.40

Question 27

Who sends RP Announce messages?

Answer 27

candidate RPs

Question 28

Who sends RP discovery messages?

Answer 28

mapping agents

Question 29

how often are RP announce messages sent?

Answer 29

every 60 seconds

Question 30

if two RPs announce the same group who is the tie broken?

Answer 30

highest IP of RP

Question 31

if both a more specific and less specific group is received by the mapping agent, which is preferred?

Answer 31

only the less specific is accepted, the more specific is rejected

Question 32

what does a BSR priority of 0 mean?

Answer 32

the BSR is not able to serve as BSR

Question 33

what is the default BSR priority?

Answer 33

0

Question 34

how often are bootstrap messages sent by the BSR?

Answer 34

every 60 seconds

Question 35

How is the BSR elected?

Answer 35

the highest BSR priority wins

Question 36

PIM Hello interval

Answer 36

30 seconds

Question 37

PIM neighbor timeout

Answer 37

3.5 times hello or 105 seconds by default

Question 38

How is PIM DR elected?

Answer 38

1) highest DR priority

2) highest IP address

Question 39

How is PIM designated forwarder elected?

Answer 39

1) if only one router has (S,G) then it is elected
2) if more than one router has (S,G) the one with the best metric to the source is elected
3) if none have (S,G) then the best metric to the RP

Question 40

MSDP SA hold-down time

Answer 40

30 seconds

Question 41

What is Peer RPF Flooding?

Answer 41

The process of sending SA messages to all other MSDP peers if received from an appropriate peer

Question 42

MSDP Protocol/Port

Answer 42

TCP/639

Question 43

Which MSDP peer listens for new connections?

Answer 43

The peer with the highest IP

Question 44

Which MSDP peer attempts to initiate a session?

Answer 44

The peer with the lowest IP

Question 45

What are the MSDP peer possible states?

Answer 45

• Disabled
• Inactive
• connect
• Listen
• Established