Which of the following are similarities between OSPF and IS-IS? Choose two answers.
A. Metric is based on hop count.
B. Link state updates sent using layer 3 multicast.
C. Support for CIDR.
D. Support hierarchy through the use of areas.
E. Slow convergence after link failures.
正解:C,D
解説: (Pass4Test メンバーにのみ表示されます)
質問 2:
An OSPF adjacency is stuck in the ExStart state. What is the most likely cause?
A. The router ID is the same on both routers.
B. The interfaces are configured as point-to-point on one side and broadcast on the other.
C. OSPF is not enabled on one of the routers.
D. The MTU does not match on both interfaces.
E. An OSPF Hello has not been received from the neighbor.
正解:A
解説: (Pass4Test メンバーにのみ表示されます)
質問 3:
If OSPF is used in a multi-area OSPF network, which of the following statements regarding route summarization is true?
A. Manual route summarization is done on the ABRs. By default, automatic summarization is done; however, it may not be optimal for all networks.
B. Manual route summarization is done on the ABRs. By default, no route summarization is done and all routes are advertised to all areas.
C. Manual route summarization must be done on all the backbone routers to be effective. Manual route summarization is optional on the routers in non-backbone areas.
D. Manual route summarization can only be done on autonomous system border routers.
正解:B
解説: (Pass4Test メンバーにのみ表示されます)
質問 4:
What are the ways the RID can be created on a Nokia 7750 SR router? (Choose three)
A. The loopback IP address
B. From the system IP address
C. By using the command "config router ospf router-id X.X.X.X"
D. From the first 32 bits of the chassis MAC address
E. From the last 32 bits of the chassis MAC address
F. From the highest interface IP address
正解:B,C,F
解説: (Pass4Test メンバーにのみ表示されます)
質問 5:
Which of the following best describes the type of packets used by OSPF routers to exchange updates on a point-to-point link?
A. UDP packets sent to an IP multicast address.
B. IP packets sent to an IP unicast address.
C. IP packets sent to an IP multicast address.
D. TCP packets sent to an IP multicast address.
正解:C
解説: (Pass4Test メンバーにのみ表示されます)
質問 6:
Click the exhibit button.

The OSPF packets shown have been exchanged between two neighbors. What state is the OSPF adjacency in?
A. The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.
B. The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.
C. The adjacency state is two way because both routers have received a database description packet.
D. The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.
正解:B
解説: (Pass4Test メンバーにのみ表示されます)
質問 7:
What type of OSPF router generates a type 2 LSA?
A. Designated Router
B. All routers within an OSPF area.
C. Area Border Router
D. Autonomous System Boundary Router
正解:A
解説: (Pass4Test メンバーにのみ表示されます)
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菅野** -
今日はPass4Testの4A0-113の試験を受けました。91%で合格しました。問題の重要点を理解すれば、この一つの問題集で余裕です。