How to Easily Pass the Nokia 4A0-100 Exam: Expert Advice

Questions 21

Public IP addresses are globally coordinated by which organization?

Options:

Network Solutions INC

IANA

IETF

ITU-T

IEEE

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Questions 22

What is the function of the Routing Table Manager?

Options:

Based on the metrics of the routing protocol, find the best path to the destination network and install it in the routing table.

Provide a CLI interface to allow the operator to configure the dynamic routing protocol on the router.

Based on the routing protocol preference values, chose the route with the lowest preference and install it in the routing table.

Provide a CLI interface to allow the network operator to install static routes in the routing table.

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Questions 23

Which of the following statements is FALSE when describing a Virtual Private LAN Service?

Options:

A VPLS emulates a virtual switch or bridge.

The VPLS performs MAC learning on MAC addresses seen from SAPs and SDPs.

When a VPLS receives a frame with an unknown MAC destination, the frame will be dropped.

MAC addresses are maintained in a MAC address forwarding database (FDB).

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Questions 24

What are some of the characteristics of BGP? (Choose three.)

Options:

BGP is an exterior gateway protocol.

BGP routing is based on distance vector.

BGP sends periodic updates to its neighbors.

A router running BGP protocol needs an Autonomous system number

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Questions 25

Which of the following statements best characterize Distance Vector Routing? (Choose two.)

Options:

Routers periodically send a copy of their routing table to their neighbors.

Routers flood link information throughout the entire area.

Network converges quickly (within several seconds) after a topology change.

Routers do not have precise knowledge of the entire network topology.

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Questions 26

Which of the following is NOT a function of TCP?

Options:

Maintaining the ordering of data transmitted across the network.

Ensuring the reliable transmission of data across the network.

Providing the receiver with a flow control mechanism.

Defining the method for routing data across the network.

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Questions 27

How does a VPRN service avoid the problem of overlapping IP addresses from different customers?

Options:

You cannot have overlapping IP addresses. Customers must change their IP address assignment.

Each VPRN service maintains a separate VPN routing and forwarding instance to separate customer routing information. This allows for overlapping addresses.

A VPRN ignores IP addressing information and uses MAC addressing instead, which are always unique.

A VPRN translates customer IP addresses to a private addressing scheme administered by the service provider.

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Questions 28

Which of the following are FALSE statements about the OSPF routing protocol? (Choose two.)

Options:

OSPF is a link state protocol with fast convergence.

OSPF supports hierarchy with multiple areas.

The default metric for OSPF is hop count.

OSPF does not support VLSM.

OSPF supports neighbor authentication.

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Questions 29

In the diagram, R3 receives an LSA with the sequence number 111 from R7 and then receives another copy of the LSA with a sequence number 112 from R1. What does R3 do with the LSA from R1?

4A0-100 Question 29

Options:

R3 discards the LSA received from R1 and sends a copy of the LSA from its link state base to R1.

R3 installs the LSA received from R1 in its link state database and floods a copy to its neighbors.

R3 discards the LSA received from R1 and sends an ACK to R1.

R3 installs the LSA received from R1 in its link state database, sends an ACK to R1 and floods a copy to its neighbors.

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Questions 30

In the diagram, R3 receives an LSA with sequence number 112 from R7 and installs it in its link state database. 10 ms. Later it receives a copy of the same LSA with a sequence number of 111 from R1. What does R3 do with the LSA from R1?

4A0-100 Question 30