Download Nokia Interior Routing Protocols and High Availability.4A0-101.PrepAway.2018-06-24.190q.vcex

Vendor: Nokia
Exam Code: 4A0-101
Exam Name: Nokia Interior Routing Protocols and High Availability
Date: Jun 24, 2018
File Size: 10 MB
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Demo Questions

Question 1
When are virtual links used in OSPF? 
  1. When two areas need to communicate and there is no area 0.
  2. When an area needs to traverse another area to reach area 0.
  3. When two areas are connected to area 0, but there is no direct path between them.
  4. When an area needs to connect directly to another area without using area 0.
Correct answer: B
Question 2
Which of the following statements regarding area border routers in an OSPF network is true?
  1. The term backbone router has the same definition as the term area border router.
  2. An OSPF network needs at least one area border router to function.
  3. Area border routers connect the backbone area to other areas in an OSPF network.
  4. By definition, an area border router must perform route summarization between areas.
Correct answer: C
Explanation:
 
 
Question 3
Which of the following correctly lists the 5 OSPF packet types?
  1. Hello, link state update, link state packet, link State acknowledgement, database description.
  2. Link state update, link state refresh, link state acknowledgement, database description, notification.
  3. Hello, link state refresh, link state update, link state acknowledgement, link state authentication.
  4. Hello, link state update, link state request, link state acknowledgement, database description.
Correct answer: D
Question 4
Which of the following OSPF area types are supported by the Alcatel- Lucent 7750 SR? Choose two answers.
  1. Not so stubby areas
  2. Level1 area WC
  3. Stub areas
  4. Partially stubby areas
  5. Level 2 areas
Correct answer: AC
Question 5
If OSPF is used in a multi-area OSPF network, which of the following statements regarding route summarization is true?
  1. Manual route summarization can only be done on autonomous system border routers.
  2. 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.
  3. Manual route summarization is done on the ABRs. By default, automatic summarization is done; however, it may not be optimal for all networks. 
  4. Manual route summarization is done on the ABRs. By default, no route summarization is done and all routes are advertised to all areas.
Correct answer: D
Question 6
Click the exhibit button. 
  
The OSPF packets shown have been exchanged between two neighbors. What state is the OSPF adjacency in?
  1. The adjacency state is two way because both routers have received a database description packet.
  2. The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.
  3. The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.
  4. The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received. 
Correct answer: C
Question 7
Which of the following best describes the type of packets used by OSPF routers to exchange updates on a point-to-point link?
  1. IP packets sent to an IP multicast address.
  2. TCP packets sent to an IP multicast address.
  3. IP packets sent to an IP unicast address.
  4. UDP packets sent to an IP multicast address.
Correct answer: A
Question 8
Which of the following statements best describes an OSPF type 3 LSA? 
  1. An OSPF type 3 LSA is an intra-area LSA, generated by the ABR only when route summarization is configured.
  2. An OSPF type 3 LSA is an inter-area LSA, generated by the ABR only when route summarization is configured.
  3. An OSPF type 3 LSA is an inter-area LSA, generated by an ASBR to describe external routes.
  4. An OSPF type 3 LSA is an inter-area LSA, generated by the ABR to describe a route to neighbors outside the area.
Correct answer: D
Question 9
Which of the following types of networks are supported on an Alcatel-Lucent 7750 SR for OSPF? Choose two answers.
  1. Broadcast
  2. Non-broadcast multi-access
  3. Point-to-point
  4. Point-to-multipoint
Correct answer: AC
Question 10
If routers R1 and R2 have a Level 1 and Level 2 IS-IS adjacency, which of the following statements is true? Choose two answers.
  1. Routers R1 and R2 are in different areas.
  2. Routers R1 and R2 are in the same area.
  3. Routers R1 and R2 will send a Level 1 Hello PDU and Level 2 Hello PDU, if the interface type between them is point-to-point.
  4. Routers R1 and R2 will send a Level 1 Hello PDU and Level 2 Hello PDU, if the interface type between them is broadcast.
  5. Routers R1 and R2 will send a Level 1/2 Hello PDU if the interface type between them is broadcast.
Correct answer: BD
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