4A0-101 Real Exam Questions and Verified Answers

Question 1 Multiple choice

The Alcatel-Lucent 7750 SR supports which two of the OSPF area types below?

A
Not So Stubby Areas
B
Level 1 Areas
C
Stub Areas
D
Partially Stubby Areas

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Correct answers: A, C

Question 2 Single choice

Click on the exhibit.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF.

Assuming that there are no stub or NSSA networks, which of the following regarding LSAs is TRUE?

A
Only router R1 will generate Type 4 LSAs.
B
Only router R3 will generate Type 4 LSAs.
C
Routers R3 and R6 will generate Type 4 LSAs.
D
Routers R1.R3 and R6 will generate Type 4 LSAs.

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Correct answer: C

Question 3 Single choice

Static routing is to be used in a network between a corporate head office with many connected networks, and a branch office with one connection to the head office.

Which of the following best describes the likely configuration?

A
The corporate head office router should have a default route and the branch site should have a more specific static route
B
The corporate head office router and the branch office router should both have specific static routes.
C
The corporate head office router and the branch router should both have default routes.
D
The corporate head office router should have a specific static route and the branch office router should have a default route.

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Correct answer: D

Question 4 Single choice

In which of the following types of areas does an OSPF router not set the E bit in its Type 1 LSA?

A
Not so stubby area
B
Stub area
C
Backbone area
D
Normal area

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Correct answer: B

Question 5 Single choice

In an IP datagram, which of the following fields identifies the receiving application?

A
The protocol field of the transport layer header.
B
The port field of the transport layer header.
C
The protocol field of the network layer header.
D
The port field of the network layer address.

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Correct answer: B

Question 6 Single choice

Click on the exhibit.

Given the output shown, which router is the ASBR in this network?

A
10.10.10.2
B
10.10.10.3
C
10.10.10.4
D
10.10.10.6
E
There is no ASBR configured in the network.

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Correct answer: C

Question 7 Single choice

Click on the exhibit.

A static route has been configured on router R1 to reach the PC at 139.120.121.2.

What else is required to make the ping succeed?

A
A default route on router R2 to router R1.
B
A default route on the PC to router R2.
C
A static route on the PC to router R2 and a static route on router R2 to the PC.
D
A default route on router R1 to router R2.

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Correct answer: B

Question 8 Single choice

Click on the exhibit.

Router R2 learns the networks shown from IS-IS. Router R2 is configured to redistribute routes from IS-IS to OSPF as shown. Assume the OSPF and IS-IS adjacencies are operational.

How many OSPF Type 5 LSAs will router R1 receive from router R2?

A
0
B
1
C
2
D
3
E
4

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Correct answer: D

Question 9 Single choice

Which of the following statements regarding OSPF routing updates on a multi-access network segment is true?

A
In multi-access networks, a DR and BDR are elected only if there are more than two routers connected to the network segment.
B
In multi-access networks, a DR and BDR are elected only if the subnet masks on the router interfaces are less than /30
C
In multi-access networks, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.
D
In multi-access networks, a DR and BDR are elected. The DR sends link-state advertisements describing the network.

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Correct answer: D

Question 10 Single choice

Two IS-IS L1/L2 routers are in the same area on the same Ethernet segment. One of the routers is the DIS.

How many adjacencies will be formed between them?

A
None
B
1
C
2
D
3
E
4

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Correct answer: C