Massive Summer Special Limited Time 65% Discount Offer - Ends in 0d 00h 00m 00s - Coupon code: netdisc

Nokia 4A0-101 Nokia Interior Routing Protocols Exam Practice Test

Demo: 47 questions
Total 315 questions

Nokia Interior Routing Protocols Questions and Answers

Question 1

Click the exhibit button.

A static route is created on router R1 "using the "static-route 0.0.0.0/0 next-hop 10.3.3.2" command. What command can be used to test the static route on an Alcatel-Lucent 7750 SR?

Options:

A.

ping static 10.5.5.5

B.

ping static 0.0.0.0/0

C.

ping 10.5.5.5

D.

ping 0.0.0.0

Question 2

Click the exhibit button.

For the IS-IS network shown, and assuming point-to-point links, what adjacencies will router R1 establish?

Options:

A.

L1/L2 adjacency with router R2.

L1 adjacency with router R3

B.

L2 adjacency with router R2

L1 adjacency with router R3

C.

L1/L2 adjacency with router R2

L1/L2 adjacency with router R3

D.

L1/L2 adjacency with router R2.

L1 adjacency with router R4

L1 adjacency with router R3

Question 3

Which of the following statements regarding distance vectors protocols are true?

(Choose two answers).

Options:

A.

RIPv1, RIPv2, and BGP are distance vector protocols.

B.

OSPF and IS-IS are distance vector protocols.

C.

Routing tables are exchanged between neighbors; however, no routing table is transmitted beyond the immediate neighbor.

D.

Distance vector protocols use the Dijkstra SPF algorithm.

E.

Routers that participate in distance vector routing protocols maintain full knowledge of distant routers and how they interconnect

Question 4

An Alcatel-Lucent 7750 SR receives a route via an IS-IS LSP with internal reach ability, and receives the same route via an OSPF type 5 LSA. If al protocol preferences are default, which route will be installed in the route table?

Options:

A.

The route learned via IS-IS will be installed.

B.

The route learned via the OSPF type 5 LSA will be installed.

C.

Both routes will be installed, if ECMP is enabled.

D.

Both routes will be installed, regardless of whether ECMP is enabled.

Question 5

Which of the following statements best describes an OSPF type 3 LSA?

Options:

A.

An OSPF type 3 LSA is an intra-area LSA, generated by the ABR only when route summarization is configured.

B.

An OSPF type 3 LSA is an inter-area LSA, generated by the ABR only when route summarization is configured.

C.

An OSPF type 3 LSA is an inter-area LSA, generated by an ASBR to describe external routes.

D.

An OSPF type 3 LSA is an inter-area LSA, generated by the ABR to describe a route to neighbors outside the area.

Question 6

Which of the following cannot be used as a matching criterion in route policy statements?

Options:

A.

Source IP address

B.

TCP source port

C.

Prefix list

D.

Protocol type

Question 7

Click the exhibit button.

If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 preference of these two routes? Choose two answers.

Options:

A.

The OSPF internal preference

B.

The IS-IS Level 1 internal preference

C.

The IS-IS Level 2 internal preference

D.

The OSPF external preference

E.

The IS-IS Level 2 external preference

F.

The IS-IS Level 1 external preference

Question 8

Which of the following statements regarding area border routers in an OSPF network is true?

Options:

A.

The term backbone router has the same definition as the term area border router.

B.

An OSPF network needs at least one area border router to function.

C.

Area border routers connect the backbone area to other areas in an OSPF network.

D.

By definition, an area border router must perform route summarization between areas.

Question 9

When IS-IS elects a DIS, what is used as the tie breaker on an Alcatel-Lucent 7750 SR, if the priorities are the same?

Options:

A.

The system ID.

B.

The loopback address.

C.

The sequence number of the Hello packet.

D.

The device that first initiated communication becomes the DIS

E.

The highest interface MAC address.

Question 10

There is an IP host with IP address 10.2.3.1. A static route is created, using the "configure router static-route 10.2.3.0/24 next-hop 10.1.2.1" command. What is the correct traceroute command to test this static route on an Alcatel-Lucent 7750 SR?

Options:

A.

traceroute 10.2.3.1

B.

traceroute 10.2.3.1 next-hop 10.1.2.1

C.

traceroute next-hop 10.1.2.1

D.

traceroute does not work on the Alcatel-Lucent 7750 SR.

E.

traceroute 10.1.2.1

Question 11

Which of the following regarding the IS-IS PSNP is FALSE?

Options:

A.

PSNPs are used on point-to-point links to acknowledge the receipt of an LSP.

B.

There are three types of PSNPs: Level 1, Level 2, and Level 1/2.

C.

A PSNP lists some of the LSPs in the router's database.

D.

PSNPs are used by an IS-IS router to request LSP information from a neighboring router.

Question 12

Click on the exhibit.

Assume that OSPFv3 is properly configured on all routers and that router R4 advertises its system prefix into Area 0.

Which of the following best describes how router R5 learns router R4's IPv6 system prefix?

Options:

A.

With a Router LSA originated by router R1.

B.

With a Router LSA originated by router R5.

C.

With a Router LSA originated by router R4.

D.

With an Inter-Area Prefix LSA originated by router R1.

E.

With an Inter-Area Prefix LSA originated by router R5.

F.

With an Inter-Area Prefix LSA originated by router R4.

Question 13

Which type of OSPF LSA lists the routers attached to a broadcast network?

Options:

A.

Type 1

B.

Type 2

C.

Type 3

D.

Type 4

E.

Type 5

Question 14

An Alcatel-Lucent 7750 SR is configured with an export policy to redistribute a loopback prefix into OSPFv3.

What type of LSA advertises the prefix to the other OSPFv3 routers in the same area?

Options:

A.

Router LSA

B.

AS External LSA

C.

Intra-Area Prefix LSA

D.

Inter-Area Prefix LSA

E.

Network LSA

Question 15

Which of the following best describes the features of Classless Inter-Domain Routing (CIDR)?

Options:

A.

Automatic summarization and the use of IP addresses that use any number of bits for the network portion of the address.

B.

Manual summarization and the use of IP addresses that use any number of bits for the network portion of the address.

C.

Automatic summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address.

D.

Manual summarization and the use of IP addresses that use a fixed number of bits for the network portion of the address.

Question 16

Which of the following are major features of OSPF? (Choose 2.)

Options:

A.

Fast reroute capability.

B.

Control traffic prioritization.

C.

Route redistribution.

D.

Traffic engineering extensions.

E.

Cut through forwarding.

Question 17

Which of the following describes the purpose of 6over4 tunneling?

Options:

A.

To give IPv6 traffic preferential routing over IPv4 routes.

B.

To allow core routers running only IPv6 protocols to carry IPv4 traffic.

C.

To give IPv4 only routers the ability to route based on IPv6 addresses.

D.

To allow IPv6 traffic to pass through an IPv4 network.

Question 18

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?

Options:

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.

Question 19

An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action does the router take?

Options:

A.

The link-state information is not populated in the database, but is forwarded to all neighbors.

B.

The link-state information already in the database is overwritten and the age is reset.

C.

The link-state information is not populated in the database and an acknowledgement is sent.

D.

The link-state information is regarded as old and nothing is done.

E.

A link-state request is performed to increase the sequence number.

Question 20

Click on the exhibit.

Router R1 distributes its loopbacks into IS-IS and globally routed addresses are configured as shown.

How many routes will router R4 have in its IPv6 route table?

Options:

A.

1

B.

2

C.

3

D.

4

E.

6

F.

7

Question 21

Click the exhibit button.

A static route has been configured on router R1 to reach the PC at 139.120.121.2. However, as shown in the exhibit, the ping fails. What is the most likely cause of the problem?

Options:

A.

Router R2 does not have a route to the system address of router R1 and therefore cannot respond to the ping.

B.

There is no default route configured on the PC.

C.

Router R2 does not have a route configured to the PC.

D.

Router R1 needs to be configured with a default route.

Question 22

When IS-IS is electing a DIS, what is used as the tie breaker on an Alcatel-Lucent 7750 SR, if the priorities are the same?

Options:

A.

The system ID

B.

The loopback address

C.

The sequence number of the Hello packet

D.

The device that first initiated communication becomes the DIS

E.

The highest interface MAC address

Question 23

If two routers running IS-IS protocols are exchanging Hello packets with different authentication types, which of the following statements regarding the adjacency state established between them is true?

Options:

A.

Different authentication types are not possible because IS-IS only supports password authentication.

B.

An adjacency will not be formed

C.

The two routers negotiate the authentication type and then reach the up state.

D.

Only an L2 adjacency will form, as long as both routers are L2 capable.

Question 24

Click the exhibit button.

Given the topology and the route-tables shown, which of the following is most likely to be the configuration on router R1?

Options:

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Question 25

A router sets the E bit in the flags of its Type 1 LSA. What does this indicate?

Options:

A.

The router is an ABR.

B.

The router is an ASBR.

C.

The router is at the end of a virtual link.

D.

The router's interface is in a stub area.

Question 26

In IS-IS database synchronization, each router compares each LSP described in the received CSNPs with the LSPs in its own database. Which of the following actions is taken if the database contains a newer copy of the LSP?

Options:

A.

The router sends a copy of the LSP from its database to its neighbor

B.

The router sends a PSNP to its neighbor describing the LSP in its database.

C.

The router updates its database with the LSP and floods a copy to its other neighbors.

D.

The router sends a PSNP to its neighbor to request the LSP.

Question 27

What is the CIDR summary for the block of networks from 193.4532.0/24 to 193.45.47.0/24?

Options:

A.

193.45 32 0/20

B.

193.45.0.0/21

C.

192.45.32.0/21

D.

192.45.0.0/20

Question 28

Click the exhibit button.

Router 2 advertises the network 192.168.3.0/24 to router R1 via IS-IS.

How can router R1 ensure that it discards the route?

Options:

A.

Use a prefix list on router R1 to discard all ingress IS-IS routes.

B.

Use an export policy and prefix list on router R1.

C.

Use an import policy and a prefix list on router R1.

D.

This is not possible because IS-IS cannot use import policies.

Question 29

Which of the following best describes the actions after an IS-IS router receives on a broadcast interface, a newer LSP than the one in its database?

Options:

A.

The router sends a copy of the LSP from its database to its neighbor

B.

The router updates its database with the LSP and floods a copy to its other neighbors.

C.

The router updates its database with the LSP, acknowledges the LSP with a PSNP and floods a copy to its other neighbors.

D.

The router updates its database with the LSP and acknowledges it with a PSNP.

Question 30

What is the primary purpose of classless interdomain routing (CIDR)?

Options:

A.

To support classful routing protocols.

B.

To allow IP routes to be defined using any number of bits for the network portion of the address.

C.

To allow interdomain routing between an IGP and EGP such as OSPF and BGP.

D.

To simplify the allocation of IP address space by defining a fixed size for the network portion of the address for each of the address classes.

Question 31

What are the three databases maintained by a Link State Protocol?

Options:

A.

Neighbor, adjacency, route table

B.

Neighbor, topology, forwarding

C.

Topology, routing, forwarding

D.

There are only two databases: adjacency and topology

Question 32

What is the term used for the updates sent by IS-IS?

Options:

A.

Link State PDUs

B.

Link State Updates

C.

Link State Advertisements

D.

Intermediate System Update Packets

Question 33

What is the default preference value for a static route in the Alcatel-Lucent 7750 SR router?

Options:

A.

0

B.

5

C.

10

D.

15

Question 34

How many databases does a Link State routing protocol use?

Options:

A.

One

B.

Two

C.

Three

D.

Four

Question 35

Which of the following best describes how IS-IS routers exchange updates on an Ethernet interface?

Options:

A.

IS-IS routers exchange updates by sending UDP packets to a multicast address.

B.

IS-IS routers exchange updates using IP multicast packets.

C.

IS-IS routers exchange updates using Ethernet multicast packets.

D.

IS-IS routers exchange updates by sending packets to the subnet broadcast address.

Question 36

In an OSPF Hello packet what fields must match all neighbor routers on the segment? (Choose 3)

Options:

A.

Area ID

B.

Hello and Dead Intervals

C.

Stub flag

D.

DR and BDR addresses

E.

The list of neighbors

Question 37

What command is used on the Alcatel-Lucent 7750 SR to define the default action to be taken if a packet does not match any entry in an IP filter?

Options:

A.

config>filter# default-action XXX

B.

config>filter>ip-filter# default-action XXX

C.

config>filter# default-mode XXX

D.

config>filter>ip-filter# default-mode XXX

Question 38

Click the exhibit button.

Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?

Options:

A.

Full; both routers are exchanging Helios to maintain the adjacency.

B.

The adjacency is down.

C.

The adjacency is in exstart state.

D.

The adjacency is in the exchange state.

Question 39

Which of the LSA types stay within an OSPF area and are not exported outside of the area? (Choose all that apply)

Options:

A.

Router LSA

B.

Network LSA

C.

Summary Network LSA

D.

Summary Router LSA

Question 40

When an OSPF adjacency is stuck in the "ExchStart" state, what is the most likely cause?

Options:

A.

The MTU does not match on both interfaces

B.

OSPF is not enabled on one of the routers

C.

The Router ID is the same on both routers

D.

A OSPF Hello has not been received from the neighbor

Question 41

Which of the following correctly describes an IPV6 header compared to an IPv4 header?

Options:

A.

The IPv6 header has a header checksum field, header length field and no fragmentation offset field.

B.

The IPv6 header has no header checksum field, no header length field and does have a fragmentation offset field.

C.

The IPv6 header has a header checksum field, no header length field and no fragmentation offset field.

D.

The IPv6 header has no header checksum field, no header length field and no fragmentation offset field.

Question 42

Which of the following is a difference between IS-IS and OSPF?

Options:

A.

IS-IS supports VLSM and CIDR.

B.

IS-IS uses OSI addressing.

C.

IS-IS supports manual summarization

D.

IS-IS uses periodic Hello messages.

Question 43

To configure 6over4 tunneling, where must indirect static routes be configured?

Options:

A.

On the CEs only.

B.

On the PEs only.

C.

On only the branch office CE.

D.

On both the CEs and PEs.

Question 44

A router running a link-state protocol sends an update to a neighbor. The neighbor sends an update back.

Why would the neighbor do this?

Options:

A.

The neighbor's link-state database has newer information than what it received in the update.

B.

The neighbor sends the update as an acknowledgement.

C.

The neighbor's update indicates that it has run out of space in its LSDB.

D.

The neighbor's update indicates that the sequence number received is the same as the one already in its link-state database.

Question 45

Click on the exhibit.

If router R2 re-distributes the IS-IS route 192.168.3.0/24 into OSPF, router R3 will receive two routes to 192.168.3.0/24. Assume that all IS-IS routers are L1/L2 capable and are in the same area.

Which of the following is TRUE?

Options:

A.

Router R3 will install the OSPF route in its routing table.

B.

Router R3 will install the IS-IS route in its routing table

C.

Router R3 will install an OSPF route and an IS-IS route in its routing table.

D.

There is not enough information to answer the question.

Question 46

Which of the following best describes a unicast IPv6 address?

Options:

A.

Fixed total of 128 bits, where 64 bits are used for routing and 64 bits are used as an interface identifier.

B.

Fixed total of 128 bits, where 32 bits are used for the global prefix, 32 bits are used for the subnet and 64 bits are used as an interface identifier.

C.

Variable total length, where at least 48 bits are used for the global prefix, 48 bits are used for the subnet and 64 bits are used as an interface identifier.

D.

Variable total length, where at least 64 bits are used for routing and 64 bits are used as an interface identifier

Question 47

Which of the following is a type of authentication that is supported by OSPF on the Alcatel-Lucent 7750 SR?

Options:

A.

Challenge handshake authentication protocol (CHAP)

B.

Two factor authentication

C.

MD5 authentication

D.

Extensible authentication protocol (EAP)

Demo: 47 questions
Total 315 questions