By default, the cost of an OSPF interface is calculated based on the bandwidth. The formula to calculate the cost is reference bandwidth/interface bandwidth.
A. TRUE
B. FALSE
正解:A
質問 2:
What does the IP-prefix-filter "ip ip-prefix test index 10 deny 0.0.0.0 0 less-equal 32" mean?
A. Denying all routes
B. Matching only default routes
C. Matching all routes
D. Denying only default routes
正解:A
質問 3:
What are the functions of an IGMFV2 Query message? (Select 3 answers)
A. A router sends IGMPv2 Query messages to collect group memberships of receiver hosts.
B. A router sends IGMPv2 Query messages to elect a querier.
C. Based on IGMPv2 Query messages, receiver hosts can unicast Report messages to the querier by obtaining its address.
D. A working router sends Query messages periodically.
正解:A,B,D
質問 4:
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. Prune
C. Graft
D. Assert
正解:C
質問 5:
If the subnet mask for Class A address is 255.255.240.0, how many bits are used for subnetting?
A. 4
B. 5
C. 9
D. 12
正解:D
質問 6:
Which of the following route entries match the IP-Prefix defined below?
ip ip-prefix test index 10 permit 192.168.0.0 16 greater-equal 24 less-equal 28
(Select 2 answers)
A. 192.168.4.0/30
B. 192.10.2.0/24
C. 192.168.3.0/25
D. 192.168.1.0/24
正解:C,D
質問 7:
Which of the following statements regarding DR in PIM protocol are true? (Select 3 answers)
A. A receiver's DR is sends Join messages to a multicast source or an RP.
B. A source's DR sends Register messages to an RP.
C. An Assert winner on a shared network segment may not be a DR.
D. In DR election, the router with the lowest IP address is elected among the routers of the same DR priority..
正解:A,B,C
Isshiki -
これ一冊を覚えれば、かなり有利に試験を進められると思います。H12-221学習の締めとしては、最適だと思います。