H12-221 Online Practice Questions and Answers

Assume that the subnet mask is 255.255.255.248. Which of the following are valid host addresses? (Select 3 answers)

A. 192.168.200.87

B. 196.123.142.190

C. 223.168.210.100

D. 220.100.100.154

Which of the following statements regarding a multicast distribution tree are true? (Select 3 answers)

A. Multicast distribution trees are classified into two types: SFT and RPT.

B. The PIM-SM protocol can generate both RFTs and SPTs.

C. The PIM-55M protocol can generate only SFTs.

D. The PIM-DM protocol can generate both RFTs and SFTs.

We can have different network segments in an OSPF area. We can also have same network segment in different OSPF areas.

A. TRUE

B. FALSE

If the value of hold timers in the Open messages sent by Peer A and Peer B are 180s and 90s respectively, then what is the interval at which the Keepalive messages are sent after a BGP connection is established between these two peers?

A. 180s

B. 90s

C. 60s

D. 30s

Which of the following statements are correct regarding BGP attributes? (Select 2 answers)

A. Till now, there are 16 BGP attributes

B. BGP attribute can be extended to 256 types

C. Well known discretionary attribute may not be included in each BGP update message, such as origin attribute

D. AS_PATH is an optional transitive attribute

Which command triggers the advertisement of BGP routes without interrupting a BGP connection?

A. Reset bgp

B. Refresh bgp all external

C. Refresh bgp all internal

D. RR-filter

Routes 172.1.12.0/24, 172.1.13.0/24, 172.1.14.0/24, and 172.1.15.0/24 can be summarized into route 172.1.8.0/21.

A. TRUE

B. FALSE

Which of the following problems can be solved by IGMP Snooping?

A. Receiver hosts support only IGNPv2, but only the SSM model is used on the network.

B. A router receives large quantities of IGMP Report messages due to the existence of large number of hosts on the network.

C. Broadcasting of multicast data on Layer 2 devices.

D. Validity of IGMP Report messages.

Which of the following messages needs to be sent out by a downstream interface when recovering from the pruned state to the forwarding state in PIM DM?

A. Join

B. Assert

C. Prune

D. Graft

Which of the following statements regarding DR in PIM protocol are true? (Select 3 answers)

A. In DR election, the router with the lowest IP address is elected among the routers of the same DR priority..

B. A source's DR sends Register messages to an RP.

C. A receiver's DR is sends Join messages to a multicast source or an RP.

D. An Assert winner on a shared network segment may not be a DR.