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Nokia 4A0-C01 Nokia NRS II Composite Exam Exam Practice Test

Demo: 127 questions
Total 852 questions

Nokia NRS II Composite Exam Questions and Answers

Question 1

When using MP-BGP for an IPv4 VPRN service, what address family needs to be used for a PE-CE BGP session?

Options:

A.

The VPN-IPv4 address family.

B.

The IPv4 address family.

C.

Either IPv4 or VPN-IPv4 address families can be configured.

D.

The same address family must be used for the provider network and the PE-CE.

Question 2

A CE is connected to an IES interface. Which of the following is TRUE?

Options:

A.

The IES's interface must be an IGP peer with the CE.

B.

The IES must use an IP address that is different than the C£.

C.

The IES can only include one SAP for the CE.

D.

The IES must include a network port.

Question 3

Click the exhibit.

E-pipe 100 is using an SDP with an LSP that uses the path shown (PE1-PE2-PE3-PE4). Based on the OAM command output, which of the following is FALSE?

Options:

A.

The E-pipe can support a maximum MTU size of 1578.

B.

The ports of the link PE2-PE3 have an MTU of 1578.

C.

An svc-ping of the E-pipe will succeed.

D.

If the step size was 2, the maximum response size would be the same.

Question 4

Which of the following about SDPs is TRUE?

Options:

A.

SDP IDs must be locally unique.

B.

SDPs are specific to one service type.

C.

SDPs must use MPLS for their encapsulation.

D.

An SDP is required for a local service.

Question 5

Which of the following statements are FALSE regarding the VPN-IPv4 address family? (Choose 2)

Options:

A.

When a PE router receives an IPv4 prefix from its local CE it creates a VPN-IPv4 prefix.

B.

The route distinguisher (RD) is appended to the IPv4 prefix to form a 16 byte VPN-IPv4 prefix.

C.

VPN-IPv4 allows BGP to distinguish multiple routes with the same prefixes originated from distinct customers

D.

VPN-IPv4 addresses are only present within the service provider network.

E.

In VPRN, data traffic is carried in VPN-IPv4 packets.

Question 6

An operator wishes to verify end-to-end connectivity for an individual service. What utility will he or she most likely use?

Options:

A.

sdp-ping

B.

Isp-ping

C.

svc-ping

D.

sdp-mtu

Question 7

Which protocol is used to signal the service label for a Layer 3 VPRN service?

Options:

A.

L-LDP

B.

T-LDP

C.

RSVP-TE

D.

MP-BGP

Question 8

Which of the following about IES is FALSE?

Options:

A.

An IES has a configurable VC MTU.

B.

An IES interface has an IP address assigned to it.

C.

IES supports QoS.

D.

An IES requires a spoke SDP.

Question 9

A service provider wishes to configure a Layer 2 service that will forward customer VLAN tags. When configuring an SDP for the service, which vc-type will forward service delimiting tags on the ingress PE?

Options:

A.

vc-type ether

B.

vc-type vlan

C.

vc-type dot1q

D.

vc-type null

Question 10

Which of the following best describes an SDP?

Options:

A.

Acts as a logical way to direct traffic from one SAP to another on a single node.

B.

Acts as a logical way to direct traffic from one service to another on a single node.

C.

Acts as a logical way to direct traffic from one access port to another.

D.

Acts as a logical way to direct traffic from services on one router to services on another.

Question 11

Click the exhibit.

The output is from PE router R1 about VPRN service 100. From which protocol did router R1 learn the prefix 192.168.20.0/24?

Options:

A.

LDP

B.

BGP

C.

MP-BGP

D.

MPLS

Question 12

How many service labels must be signaled to bring up a fully-meshed VPLS among three PE routers?

Options:

A.

1

B.

3

C.

6

D.

12

Question 13

Which of the following about the Alcatel-Lucent 7750 SR's sdp-ping utility is FALSE?

Options:

A.

It tests uni-directional or round-trip in-band connectivity.

B.

It tests the reachability of hosts that are using an SDP.

C.

It tests the reachability of the far-end IP address of an SDP through its tunnel.

D.

It can be used by specifying only an SDP ID.

Question 14

Which of the following about dot1Q SAPs is FALSE?

Options:

A.

The dot1Q default SAP (port: *) can be used to pass VLAN tags transparently through a network.

B.

The dot1Q null SAP (port: 0) accepts all tagged frames and untagged frames.

C.

The dot1Q default SAP (port: *) accepts all untagged frames and any frames with tag values that are not used as a service-delimiting value on another SAP.

D.

A dot1q null SAP (port: 0) and a dot1q default SAP (port: *) cannot both be defined on the same port.

Question 15

Which of the following statements best describes the flooding of traffic on a PE when traffic is received on a mesh SDP?

Options:

A.

Traffic is flooded to all SAPs in the service.

B.

Traffic is flooded to all SAPs and spoke SDPs in the service.

C.

Traffic is flooded to all SAPs and mesh SDPs in the service.

D.

Traffic is flooded to all SAPs, spoke SDPs. and mesh SDPs in the service.

E.

The traffic is not flooded.

Question 16

Which of the following can be used to detect the smallest path MTU in an RSVP signaled MPLS tunnel?

Options:

A.

ADSPEC

B.

CSPF

C.

Service ping

D.

LSP trace

Question 17

Which of the following commands is used to enable an E-pipe service?

Options:

A.

config>service= epipe enable

B.

config>service~ vpws enable

C.

config>service= no shutdown

D.

config>port= no shutdown

E.

config>service= epipe no shutdown

Question 18

A SAP configured in the form of 1/1/1:0/32 would be used for which type of VPWS?

Options:

A.

A-pipe

B.

C-pipe

C.

E-pipe

D.

F-pipe

Question 19

Which of the following about SAPs is FALSE?

Options:

A.

A SAP can be associated with more than one service.

B.

A SAP is the subscriber's point of entry to the service network.

C.

A SAP is created by specifying a physical port and an encapsulation type.

D.

A SAP can only be created on a port configured as "access".

Question 20

A VPLS receives a frame with the single VLAN tag 35 on the Q-in-Q SAP 1/1/1:35.*. Which of the following describes default Alcatel-Lucent 7750 SR behavior?

Options:

A.

The frame is dropped.

B.

The VLAN tag is removed, and the frame is transported over the network.

C.

The VLAN tag is kept, and the frame is transported over the network.

D.

The VLAN tag is kept, a VLAN of 0 is added, and the frame is transported over the network.

Question 21

Click the exhibit.

The operator at PE1 wants to analyze the traffic between PE2 and CE4. On an Alcatel-Lucent 7750 SR, which of the following is required as part of the configuration?

Options:

A.

PE2 needs a mirror source with the remote source specified.

B.

PE1 needs a mirror destination with the remote source specified.

C.

PE1 needs a mirror source with the remote source specified.

D.

PE1 and PE2 need a mirror source specified.

Question 22

Which of the following about VPRNs is FALSE?

Options:

A.

A VPRN is a Layer 3 service.

B.

A PE maintains a separate forwarding table for each VPRN.

C.

The service provider manages the customers IP addressing.

D.

Multiple VPRNs can be deployed over the same IP/MPLS network infrastructure.

Question 23

Which of the following about SAPs is TRUE?

Options:

A.

More than one SAP can be configured on a physical port that is configured for null encapsulation.

B.

Dot1Q Ethernet encapsulated access ports can support multiple SAPs and services.

C.

SAPs can be created on ports designated as "Network".

D.

SAPs can only be created on Ethernet ports.

Question 24

Which of the following about the BGP VPN-IPv4 address family is FALSE?

Options:

A.

When a PE router receives an IPv4 prefix from its local CE, it creates a VPN-IFV4 prefix.

B.

VPN-IPv4 allows BGP to distinguish between duplicate prefixes originating from different customers.

C.

In a VPRN, data traffic is carried in packets that have VPN-IPv4 addresses.

D.

VPN-IFV4 addresses are only present within the service provider network.

Question 25

Which of the following about the Alcatel-Lucent 7750 SR sdp-ping is TRUE?

Options:

A.

It tests the IGP reachability of the far-end IP address of an SDP.

B.

It tests that the MTU settings of a service are correct.

C.

It tests in-band, uni-directional or round-trip connectivity of SDPs.

D.

It tests the reachability of hosts connected to an SDP.

Question 26

Which of the following about VPN labels is FALSE?

Options:

A.

They are signaled between PE devices using MP-BGP.

B.

They are swapped at each P router as a packet crosses the service provider network.

C.

They are also known as the inner label or service label.

D.

They indicate to the egress PE the VPRN to which a packet belongs.

Question 27

Click the exhibit. This output is from router R4. Service 333 is a VPLS. Why might the peer 10.10.10.1 have the same value for IngLbl and EgrLbl?

Options:

A.

The labels are of local significance only, so other routers can use the same value.

B.

10.10.10.1 has yet to send its own unique label.

C.

Router R4 is using the same tunnel to send and receive to 10.10.10.1.

D.

The service on 10.10.10.1 is down, so it is rejecting packets.

Question 28

Click the exhibit.

Which OAM tool produced this output?

Options:

A.

vprn-ping

B.

sdp-ping

C.

traceroute

D.

Isp-trace

Question 29

On a dot1Q encapsulated port, frames with a VLAN tag of 0 and untagged frames are forwarded to the null SAP

Options:

A.

TRUE

B.

FALSE

Question 30

Which of the following about VPRN route targets is FALSE?

Options:

A.

Route targets are carried in MP-BGP updates.

B.

Route targets identify the VRF that a VPN-IFV4 prefix is associated with.

C.

Route targets are communicated between PEs that are part of a specific VPRN.

D.

Route targets identify the egress SAP of a service towards a CE.

Question 31

Which one of the following commands on an Alcatel-Lucent 7750 SR can take a FEC as a parameter to verify if a packet for that FEC reaches the appropriate LER?

Options:

A.

ping

B.

sdp-ping

C.

svc-ping

D.

Isp-ping

Question 32

What is the minimum Ethernet physical network MTU required for a Layer 2 service on an MPLS encapsulated SDP with a service MTU of 1500?

Options:

A.

1500

B.

1508

C.

1514

D.

1522

Question 33

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 34

Refer to the exhibit.

Assume that OSPFv3 is properly configured on all routers and that R4 advertises its system prefix into Area 0. Which of the following statements best describes how R5 learns R4's IPv6 system prefix?

Options:

A.

With a Router LSA originated by R1

B.

With a Router LSA originated by R5

C.

With a Router LSA originated by R4

D.

With an Inter-Area Prefix LSA originated by R1

E.

With an Inter-Area Prefix LSA originated by R5

F.

With an Inter-Area Prefix LSA originated by R4

Question 35

What are some of the characteristics of Alcatel-Lucent's implementation of non-stop routing? (Choose two)

Options:

A.

No protocol extensions required

B.

Only supported by OSPF and IS-IS

C.

Transparent to routing neighbors

D.

Uses Graceful Restart to inter-operate with other vendors

Question 36

Which of the following statements regarding link state protocols are true? (Choose two)

Options:

A.

When a router receives updates from its neighbors, it adds them to its link state database, performs an SPF computation, and sends the results to its neighbors.

B.

An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be seen in the route table.

C.

Each router constructs its own link state database with updates received from neighbors.

D.

An SPF computation is done by each router to determine the best path to destination networks. All the best paths determined by the SPF calculation will be offered to the route table manager.

Question 37

Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. How many type 4 LSAs will be present in the network?

Options:

A.

One.

B.

One for each of the routers in area 0

C.

One for each of the external routes exported by router R1.

D.

Type 4 LSAs are not generated in this network topology.

Question 38

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 is taken by the router?

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.

Question 39

What are the similarities between OSPF and IS-IS? Choose two.

Options:

A.

Metric is cost based

B.

Slow convergence

C.

Automatic summarization

D.

Support CIDR

Question 40

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 41

Click the exhibit button.

What is the command to configure a static route on the Alcatel-Lucent 7750 SR router R1 to reach the network behind router R2?

Options:

A.

configure router static-route 139.120.121.0/24 next-hop 138.120.199.2

B.

configure router static-route 139.120.121.0/24 next-hop 138.120.199.1

C.

configure router static-route 138.120.199.2/24 next-hop 138.120.199.1

D.

configure router static-route 139.120.121.0/24 next-hop 139.120.121.2

Question 42

Which of the following statements describe the major features of OSPF? Choose two answers.

Options:

A.

Fast reroute capability

B.

Control traffic prioritization

C.

Route redistribution

D.

Traffic engineering extensions

E.

Cut through forwarding

Question 43

Which of the following statements regarding IS-IS DIS is false?

Options:

A.

L1 and L2 routers elect separate DIS's.

B.

DIS uses multicast address 0180x200:0015 to communicate with other routers on the broadcast network.

C.

If a new router starts up in a LAN and has a higher interface priority, the new router preempts the original DIS and becomes the DIS.

D.

In broadcast multi-access networks, such as Ethernet, a single router is elected as the DIS. There is no backup DIS

Question 44

Choose the Distance Vector Protocols from the list below:

Options:

A.

OSPF

B.

RIPv1

C.

RIPv2

D.

IS-IS

Question 45

Click the exhibit button.

Routers R1 „ R2, and R3 are running a classful routing protocol between them. Assuming that router R1 advertises all directly connected networks, how will these networks be represented in router R3's routing table?

Options:

A.

Router R3's routing table can only contain one of the routes, which will result in route flapping.

B.

Router R3's routing table will have one entry for 10.1.1.0/24 and one entry for 10.1.2.0/24.

C.

The networks will be represented with one entry of 10.0.0.0/8 in router R3's routing table.

D.

The networks will be represented with one entry of 10.0.0.0/24 in router R3's route table.

Question 46

Which of the statements below best describes the pseudonode in an IS-IS network?

Options:

A.

The DIS creates a logical node to represent a group of routers on the same non-broadcast network; this node is the pseudonode

B.

The DIS creates a logical node to represent the topological database of the backbone network in an IS-IS network; this node is the pseudonode

C.

The DIS creates a logical node to represent a broadcast sub-network; this node is the pseudonode

D.

The DIS creates a logical node to represent the complete topology of an IS-IS area; this node is the pseudode

Question 47

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 48

If a Router originates a type 1 router LSA with the E bit set what types of areas can it belong to? Select all that apply.

Options:

A.

Not So Stubby Area

B.

Stub Area

C.

Backbone Area

D.

Standard Area

Question 49

When a router receives an IP packet, but does not find a match in the routing table for the destination IP address, what actions are performed by the router?

Options:

A.

The packet is flooded out all router interfaces.

B.

The packet is dropped and an ICMP unreachable message is sent back to the source.

C.

The packet is silently discarded.

D.

The packet is flooded out all interfaces and an ICMP unreachable message is sent.

Question 50

Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Assuming that there are no stub networks, which of the following statements regarding Type 4 LSA generation is true?

Options:

A.

Router R1 generates a Type 4 LSA that is flooded to areas 0, 1, and 2.

B.

Router R3 generates a Type 4 LSA that is flooded to areas 0, 1, and 2.

C.

Router R3 generates a Type 4 LSA that is flooded to areas 0 and 2.

D.

Router R3 generates a Type 4 LSA that is flooded to area 0, and router R6 generates a Type 4 LSA that is flooded to area 2.

Question 51

What command allows analysis of the Dijkstra calculation on the Alcatel-Lucent 7750 SR?

Options:

A.

There is no such calculation in IS-IS

B.

Show router isis database

C.

Show router isis dijykstra

D.

Show router isis spf

Question 52

A static route is created using the command "static-route 0.0.0.0/0 next-hop 3.3.3.1". What command could be used to test the static route on an Alcatel-Lucent 7750 SR?

Options:

A.

Ping static 3.3.3.1

B.

Ping static 0.0.0.0/0

C.

Ping 3.3.3.1

D.

Ping 0.0.0.0

Question 53

Which one of the commands below will create a static route to network 2.3.4.0/24 on the AlcatelLucent 7750 SR router?

Options:

A.

Static route 2.3.4.0 255.255.255.0 next hop 3.4.5.6

B.

Static-route next-hop 3.4.5.6 2.3.4.0/24

C.

Static route 2.3.4.0/24 next hop 3.4.5.6

D.

Static-route 2.3.4.0/24 next-hop 3.4.5.6

Question 54

Static routing will 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?

Options:

A.

The corporate head office router will have a default route and the branch site will have a more specific static route.

B.

The corporate head office router and the branch office router will both have specific static routes.

C.

The corporate head office router and the branch router will both have default routes.

D.

The corporate head office router will have a more specific static route and the branch office router will have a default route.

Question 55

A router is configured with the command "configure router ecmp 4". There are two best paths to a given destination with an equal cost in the IGP. Which of the following best describes the handling of traffic to this destination?

Options:

A.

The router installs two routes for the destination with two different next hops. A hashing algorithm is used to distribute traffic over the two paths.

B.

The router installs two routes for the destination with two different next hops. Traffic is evenly distributed over the two paths.

C.

The router installs four routes for the destination with four different next hops. A hashing algorithm is used to distribute traffic over the four paths.

D.

The router installs four routes for the destination with four different next hops. Traffic is evenly distributed over the four paths.

E.

The router installs one route for the destination. Traffic is evenly distributed over the two paths.

Question 56

Which of the following statements regarding IS-IS LSPs is true?

Options:

A.

There are three types of LSPs: L1, L2 and L1/L2.

B.

An LSP packet contains the ATT bits and the IS-type bits.

C.

The lower the LSP sequence number, the more current the update.

D.

Separate databases are maintained for L1 „ L2, and L1/L2 LSPs.

Question 57

Given the NSAP address of 49.0012.1234.1234.1234.00, what area does the IS-IS router reside in?

Options:

A.

49.0012.1234

B.

49.0012

C.

12.1234

D.

1234

E.

49.1234

Question 58

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 59

What are the ways the RID can be created on an Alcatel-Lucent 7750 SR router? (Choose three)

Options:

A.

From the last 32 bits of the chassis MAC address

B.

From the first 32 bits of the chassis MAC address

C.

The loopback IP address

D.

By using the command "config router ospf rid X.X.X.X"

E.

From the system IP address

F.

From the highest interface IP address

Question 60

What is another term to describe the default route for a client?

Options:

A.

Black hole

B.

Default gateway

C.

Gateway path

D.

Proxy ARP

Question 61

In an IP datagram, which field identifies the receiving application

Options:

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

Question 62

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 63

At what point is the LSP SRM flag cleared when an LSP is sent on an IS-IS point-to-point link?

Choose two answers.

Options:

A.

As soon as the LSP is transmitted.

B.

When an acknowledgment is received in the form of PSNP.

C.

When an older LSP is received.

D.

When a newer or same aged LSP is received.

E.

Only when a newer LSP is received

Question 64

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 65

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 is the most likely configuration on the head office and branch office routers?

Options:

A.

The head office has a default route and the branch office has a specific static route.

B.

The head office and the branch offices both have specific static routes.

C.

The head office and the branch office both have default routes.

D.

The head office has a specific static route and the branch office has a default route

Question 66

Which of the following statements regarding LSP path configuration are true? (Choose three)

Options:

A.

The path must include at least one hop.

B.

The path may be used multiple times in a single LSP.

C.

The path may comprise loose hop entries only.

D.

The path must define the LSP's tail end.

E.

The path may be used for multiple LSPs.

Question 67

What is the common usage of the MPLS EXP bits?

Options:

A.

Each implementation can use them as they see fit.

B.

They are used to carry the Ethertype value.

C.

They are used to carry the TTL value.

D.

They are used to carry QoS classification.

E.

They are used to carry fragmentation flag information

Question 68

Click on the exhibit.

OSPF is operational on all links in the network diagram, all links are the same cost, and all routers are configured with an ECMP value of 4. Router R4 advertises the prefix 192.168.3.0/24 into OSPF.

How many entries for prefix 192.168.3.0/24 will be in router R5's routing table?

Options:

A.

0

B.

1

C.

2

D.

3

E.

4

Question 69

If an LSP's loose primary path includes the statement "include green" and "exclude red;" how does CSPF choose the LSP's path?

Options:

A.

CSPF chooses a link that is a member of both administrative groups

B.

CSPF chooses only those links that are NOT members of the green admin group

C.

CSPF prunes the green links and uses these links for the secondary path

D.

CSPF signals the LSP path over the green links only, and prunes all other links

Question 70

Click the exhibit button.

If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 will receive two routes to 192.168.3.0/24. What will be the preference of these two routes? Assume that all IS-IS routers are L1/L2 capable and are in the same area. 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 71

Which of the following prerequisites must you configure on a router to enable LDP-over-RSVP support? (Choose two)

Options:

A.

Configure the T-LDP peers for tunneling.

B.

Configure tunneled T-LDP sessions between PE routers.

C.

Enable Idp-over-rsvp in the IGP configuration on the PEs and ABRs

D.

Enable LSP stitching on the RSVP LSPs

Question 72

What type of packet will cause an OSPF router to respond with a link-state request packet?

Options:

A.

Hello

B.

Link-state request

C.

Link-state acknowledgment

D.

Link-state update

E.

Database description

Question 73

Which of the following statements regarding RSVP-TE is FALSE?

Options:

A.

RSVP-TE operates in a downstream unsolicited label advertisement mode.

B.

RSVP-TE makes use of ordered control mode.

C.

RSVP-TE is an MPLS signaling protocol, based on the resource reservation protocol.

D.

RSVP-TE enables the establishment of explicitly routed LSPs that can be automatically routed away from network failures

E.

RSVP-TE supports explicitly routed LSPs using either loose or strict route definitions.

Question 74

Which of the following statements is true of an established LDP session?

Options:

A.

It uses a UDP connection with an arbitrary port number.

B.

It uses a UDP connection with well known port number 646.

C.

It uses a TCP connection with an arbitrary port number.

D.

It uses a TCP connection with well known port number 646.

Question 75

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 76

Which of the following statements regarding the MPLS SWAP label operation is true?

Options:

A.

The inner label will be exchanged with the MPLS outer label.

B.

The inner label will be exchanged for a new label.

C.

The outer label will be exchanged for a new label.

D.

All labels will be exchanged for one new label.

E.

All labels will be exchanged for an equal number of new labels.

Question 77

Two IS-IS routers are exchanging Hello packets with different authentication types. Which of the following 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 78

Why does IPv6 not use ARP?

Options:

A.

The ARP functionality has been replaced by the Neighbor Discovery protocol.

B.

The ARP functionality is not needed due to the increased IPv6 address space.

C.

ICMPv6 reduced its role to connectivity checking and auto-configuration only.

D.

ICMFV6 replaced the ARP functionality with Multicast Listener Discovery (MLD).

Question 79

Which of the following statements best describes downstream unsolicited label distribution?

Options:

A.

An LER may answer requests for label mappings immediately, without waiting for a label mapping from the next-hop.

B.

An LER may advertise label mappings to all peers for which it might be a next-hop for a given FEC.

C.

An LER propagates a label mapping downstream for a FEC. only if it has a label mapping for the FEC next-hop.

D.

An LER will only distribute a label for a FEC when it has been requested to do so.

Question 80

When a device receives a labeled packet, which of the following can occur?

Options:

A.

The packet can only be forwarded as an unlabeled packet.

B.

The packet can be forwarded as a labeled or unlabeled packet, depending on the received label value.

C.

The packet can be forwarded as a labeled or unlabeled packet, depending on the destination IP address in the payload

D.

The packet can only be forwarded as a labeled packet.

Question 81

What is the function of the MPLS label assigned to a packet?

Options:

A.

It identifies the FEC.

B.

It specifies the packet's header length

C.

It identifies the origin of the packet.

D.

It specifies the type of data contained in the packet

Question 82

Which of the following are functions of the MPLS control plane in a router? (Choose two)

Options:

A.

Label allocation and management.

B.

Label swapping.

C.

Pushing a label on an unlabeled packet.

D.

Label signaling.

E.

Routing lookups.

Question 83

Which of the following about 6over4 is FALSE?

Options:

A.

The CE routers run only IPv6.

B.

The PE routers must run IPv4 and IPv6.

C.

The P routers must run IPv4 and IPv6.

D.

IPv6 routes on the PE routers may have an IPv4 address as the next hop.

Question 84

Which of the following indicates the path over which an LSP's tail end router will return an RSVP RESV message?

Options:

A.

The IGP FIB.

B.

The Reservation State Block (RSB)

C.

The Path State Block (PSB)

D.

The opaque database.

Question 85

Click on the exhibit button below.

With fast reroute enabled, and given the following:

  • Two protected LSPs with the path R1-R2-R3
  • Both LSPs enable facility bypass and link protection.

When router R1 is the PLR, which router becomes the MP?

Options:

A.

Router R1

B.

Router R2

C.

Router R3

D.

Router R4

E.

Router R5

Question 86

Click on the exhibit button below. Assume the following:

- Each router's OSPF interfaces are in the areas shown.

- Bidirectional LDP-over-RSVP tunnels extend from routers R1 to R3 and back over the path R1-R4-R5-R3.

- You enable fast reroute facility bypass on the R5-R3 RSVP LSP.

- Router R5 acts as a PLR, protecting the R5-R3 link by building a bypass tunnel through router R2.

You build a layer 2 VPN on routers R1 and R3, using the LDP-over-RSVP tunnels. What MPLS configuration step must you complete on router R2 for it to protect the end-to-end service?

Options:

A.

Enable LDP on the R2-R5 interface.

B.

Configure T-LDP sessions between routers R2 and R5 and R3.

C.

Configure LDP-over-RSVP support on router R2.

D.

Enable MPLS and RSVP on the router R2 network interfaces.

E.

Enable LDP on the R2-R5 and R2-R3 interfaces.

Question 87

Click on the exhibit.

The numbers beside the links are the metrics for that link.

Given the diagram, what path will traffic follow from router R2 to router R8, and from router R8 to router R2, if IS-IS is the routing protocol?

Options:

A.

Router R2 to router R8 will follow (R2-R3-R5-R7-R8). Router R8 to R2 will follow (R8-R7-R5-R3-R2)

B.

Router R2 to router R8 will follow (R2-R3-R4-R6-R7-R8). Router R8 to R2 will follow (R8-R7-R6-R4-R3-R2)

C.

Router R2 to router R8 will follow (R2-R3-R5-R7-R8). Router R8 to R2 will follow (R8-R7-R6-R4-R3-R2)

D.

Router R2 to router R8 will follow (R2-R3-R4-R6-R7-R8) Router R8 to R2 will follow (R8-R7-R5-R3-R2)

Question 88

The following are statements about fields in the Hello packet that must match in order to form an OSPF adjacency. Which statement is correct?

Options:

A.

The area ID does not have to match.

B.

The value of the E bit in the options field does not have to match.

C.

The value of the Hello interval does not have to match.

D.

The value of the network mask does not have to match.

E.

The area ID, the E bit value, the Hello interval and network mask must all match.

Question 89

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

Options:

A.

L1 and L2 routers elect separate DIS's.

B.

DIS uses a specific Ethernet multicast address to communicate with other routers on the broadcast network.

C.

If a new router starts up in a LAN and has a higher interface priority, the new router preempts the original DIS and becomes the DIS.

D.

In broadcast multi-access networks, such as Ethernet, one router is elected as the DIS and a second router as the backup DIS.

Question 90

Which part of the NSAP address is used to indicate to the end system that a packet is to be processed by the router itself?

Options:

A.

AFI

B.

IDI

C.

HO-DSP

D.

NSEL

Question 91

Click on the exhibit button below.

Given the configuration below, what is the system ID of the destination node?

Options:

A.

10.32.1.2

B.

10.1.478

C.

1048.1.1

D.

Cannot tell from this configuration

E.

10.1.2.2

Question 92

What type of LSA is used to flood information about prefixes from one OSPF area to other attached areas?

Options:

A.

Type 1

B.

Type 3

C.

Type 4

D.

Type 7

Question 93

What MPLS function should be performed by a router that receives a data packet containing an MPLS label value of 3?

Options:

A.

A router will never receive a packet containing this label value.

B.

Request a new label from the peer that provided this label.

C.

Pop the label.

D.

PUSH an additional label onto the label stack.

E.

Signal a new label to the peer that sent the packet.

Question 94

Which of the following statements regarding the last two octets of the LDP identifier is true?

Options:

A.

It is always a random 16-bit number.

B.

It is always zero for per-interface label space.

C.

It is always non-zero.

D.

It is always zero for per-platform label space.

E.

It is always non-zero for per-platform label space.

Question 95

Click on the exhibit.

Router R5 is advertising the three loopbacks prefixes shown in OSPFv3. The following command is executed on router R1: R1# configure router ospf3 area 0 area-range FD00:11:11:5000:764.

Which of the following is TRUE regarding the OSPFv3 LSDB on R6?

Options:

A.

Router R6 will have a single Router LSA that describes the summary prefix.

B.

Router R6 will have three Router LSAs - one to describe each loopback prefix.

C.

Router R6 will have a single Inter-Area Prefix LSA to describe the summary prefix.

D.

Router R6 will have three Inter-Area Prefix LSAs - one to describe each loopback prefix.

E.

Router R6 will not have any LSAs to describe the loopback prefix or the summarized prefix.

Question 96

What is the primary purpose of variable length subnet masks (VLSM)?

Options:

A.

To reduce the size of each routing update.

B.

To allow interoperability between routing protocols.

C.

To allow different subnet masks for different subnets.

D.

To reduce the size of the routing table.

Question 97

Click on the exhibit.

Which of the following about the bypass tunnel is FALSE?

Options:

A.

The router 10.10.10.1 is a PLR providing node protection for the router 10.10.10.3.

B.

One-to-one fast reroute protection is requested by an LSP.

C.

The bypass-link tunnel is used to avoid the link with the egress interface address 10.3.4.4.

D.

The bypass-node tunnel is used to avoid the next-hop downstream router 10.10.10.3.

Question 98

Which of the following statements is FALSE regarding 6VPE?

Options:

A.

Multiple MP-BGP sessions are required to carry VPN-IPv4 and VPN-IPv6 routes.

B.

PE routers must support both IPv4 and IPv6 addresses; customer routers can use either one

C.

In 6VPE, MP-BGP is used to advertise IPv6 prefixes and the associated VPRN label.

D.

In 6VPE, the provider core routers are IPv6-unaware.

E.

All of the above statements are true.

F.

All of the above statements are false.

Question 99

What MPLS function should be performed by a router that receives a data packet with an MPLS label value of 0?

Options:

A.

Push an additional label onto the label stack.

B.

Pop the label.

C.

Swap the label.

D.

Pop the label and push an additional label onto the label stack.

Question 100

Which of the following statements are TRUE regarding sdp-ping? (Choose 3)

Options:

A.

Provides a mechanism to determine the hops an SDP traverses.

B.

Provides in-band uni-directional connectivity tests.

C.

Provides in-band round-trip connectivity tests.

D.

Tests ability of reaching the far-end IP address of an SDP ID within the SDP encapsulation.

E.

Provides information regarding the exact MTU supported between service ingress and service termination.

Question 101

Click on the exhibit.

If the primary path goes down, which secondary LSP path will the head-end router select first?

Options:

A.

Secondary_Path-1

B.

Secondary_Path-2

C.

Secondary_Path-3

D.

Secondary_Path-4

Question 102

Click on the exhibit.

Which of the following is FALSE?

Options:

A.

The Isp-ping tool is used to perform a unidirectional LSP test.

B.

The router 10.10.10.2 is the egress router of the LSP.

C.

The router can reach the far-end of the LSP through an RSVP-TE tunnel.

D.

The router can reach the far-end of the LSP through an LDP tunnel.

Question 103

Which of the following modes are used by RSVP-TE on an Alcatel-Lucent 7750 SR?

Options:

A.

Independent control mode, downstream on demand

B.

Independent control mode, downstream unsolicited

C.

Ordered control mode, downstream on demand

D.

Ordered control mode, downstream unsolicited

Question 104

Which of the following best describes an IES?

Options:

A.

Layer 3 direct Internet access service.

B.

Layer 2 point-to-point service.

C.

Layer 2 multipoint-to-multipoint service.

D.

Layer 3 IP multipoint-to-multipoint VPN service.

Question 105

Click on the exhibit.

All links are operationally up initially. When the link between routers R4 and R6 goes down, what will router R1 do?

Options:

A.

Router R1 will switch traffic to the secondary path immediately.

B.

Router R1 will discard traffic until a new IGP route to router R6 is re-calculated.

C.

Router R1 will discard traffic because the secondary path is not a fully strict path.

D.

Router R1 will signal the secondary path and switch traffic to it.

Question 106

Which of the following defines a SAP that will select frames with an outer tag of '4' and ignore any inner lag on a Q-in-Q encapsulated port?

Options:

A.

sap 1/1/1:0.*

B.

sap 1/1/1

C.

sap 1/1/1:*.4

D.

sap 1/1/1:4.*

Question 107

On Alcatel-Lucent 7750 SR OS, routing information between the CE and PE can be exchanged using the following methods.

Options:

A.

ISIS, RIP, OSPF, static routes

B.

BGP, ISIS, RIP, OSPF, static routes

C.

BGP, RIP, OSPF, static routes, OSPF3

D.

ISIS, RIP, OSPF, static routes, OSPF3

Question 108

The terms "customer" and "service" are used synonymously when describing a service implementation on the Alcatel-Lucent 7750 SR.

Options:

A.

TRUE

B.

FALSE

Question 109

Which of the following about CSPF is TRUE?

Options:

A.

The tail-end router performs the CSPF calculation for an LSP.

B.

CSPF calculations are always performed on RSVP-TE based LSPs.

C.

The head-end router performs the CSPF calculation for an LSP.

D.

Each downstream router performs its own CSPF calculation for an LSP.

Question 110

Which of the following best describes how the path-mlu is chosen for an SDP?

Options:

A.

An SDP does not have a path-mtu

B.

The path-mtu must be set by the administrator.

C.

By default, the path-mtu is calculated automatically from the network port MTU of the PE router.

D.

The path-mtu is calculated based on the service MTU of the service using the SDP.

E.

The path-mtu is signaled between the PE endpoints when the service is established.

Question 111

Which of the following about CAC is FALSE?

Options:

A.

CAC is used when the LSP path has not been computed by CSPF.

B.

CAC is used when the LSP path has been computed by CSPF.

C.

CAC is used to perform a bandwidth check on each egress interface of the downstream router.

D.

CAC is used to perform a bandwidth check based on the router's LSDB.

Question 112

Which of the following statements best describes a route target?

Options:

A.

A route target is a BGP extended community used to identify the VRF table for a prefix at the receiving PE

B.

A route target is a mechanism from which VPRN controls the distribution of VPN routing information.

C.

Route target attributes are earned in a MP-BGP as attributes of the route.

D.

A route target is used by the PE router to identify the VRF that a VPN-lPv4 prefix is associated with.

E.

All of the above statements describe a route target

F.

None of the above statements describe a route target

Question 113

Click on the exhibit.

This policy is applied on a router as an LDP export policy and an LDP session has been established between this router and its neighboring router. In addition to the FECs learned from its neighbors, what additional FECs will appear in this router's LIB?

Options:

A.

All FECs that are in the 192.168.1.0/24 address space.

B.

Local FECs that are in the 192.168.1.0/24 address space.

C.

All FECs that are not in the 192.168.1.0/24 address space.

D.

All FECs except the local FECs that are in the 192.168.1.0/24 address space.

Question 114

Which of the following is NOT required when configuring an LSP with an admin group constraint on an Alcatel-Lucent 7750 SR?

Options:

A.

Enable traffic engineering on all routers along the LSP path.

B.

Enable CSPF on the head-end router.

C.

Configure a path definition on all routers along the LSP path.

D.

Enable MPLS and RSVP on all routers along the LSP path.

Question 115

Which of the following best describes a distributed Epipe Service?

Options:

A.

An Epipe that has 2 or more SDPs configured.

B.

An Epipe that has 3 or more SAPs configured.

C.

An Epipe that has 2 SAPs on the same node but no SDPs configured

D.

An Epipe that is configured between two nodes, each having 1 SAP and 1 SDP configured.

Question 116

Click on the exhibit.

An LSP traverses R1-R2-R4-R6 and one-to-one fast reroute with link protection is enabled. All links have the same cost. Which of the following about DMP and MP is TRUE?

Options:

A.

R3 and R5 become DMPs; R6 becomes MP.

B.

R3 and R5 become DMPs; R4 becomes MP.

C.

R3, R5, and R6 become DMPs; R4 becomes MP.

D.

R1, R3, and R5 becomes DMPs; R4 and R6 become MPs.

Question 117

Click on the exhibit.

All links have 1 Gbps unreserved bandwidth initially. After the LSP's primary and standby secondary paths are signaled, how much bandwidth is reserved on the link between routers R1 and R2?

Options:

A.

If Shared Explicit reservation style is used, 400Mbps is reserved.

B.

If Shared Explicit reservation style is used, 700Mbps is reserved.

C.

If Fixed Filter reservation style is used, 400Mbps is reserved.

D.

If Fixed Filter reservation style is used, 300Mbps is reserved.

Question 118

Which of the following statements best describes an FDB used in a VPLS service?

Options:

A.

A VPLS service does not use an FDB.

B.

An FDB is maintained on the PE router to track MAC addresses learned from all traffic through the router.

C.

An FDB is maintained on the PE router to track MAC addresses learned from all VPLS services on the router.

D.

A separate FDB is maintained for each VPLS service to track MAC addresses learned from each service.

E.

For each VPLS service, two FDBs are maintained to track MAC addresses; one for unicast traffic and one for multicast and broadcast traffic.

Question 119

What is the default vc-type for an SDP on the Alcatel-Lucent 7750 SR?

Options:

A.

vc-type null

B.

vc-type ether

C.

vc-type vlan

D.

vc-type none

Question 120

Which of the following fields does NOT appear in the MPLS label header?

Options:

A.

Label

B.

Frame check sequence

C.

Traffic Class (previously called Experimental)

D.

Time To live

E.

Bottom of stack bit

Question 121

Which of the following about LDP-over-RSVP is TRUE?

Options:

A.

RSVP LSPs must exist between each PE-ABR pair, or ABR-ABR pair in each area.

B.

When LDP-over-RSVP is active, the LDP prefixes are resolved to a physical egress interface.

C.

Targeted sessions must exist between all routers along the tunnel path.

D.

Link LDP sessions must exist between each ABR-ABR pair in each area.

Question 122

Click on the exhibit.

This LSP terminates on a system IP address. What is the system address of the destination node?

Options:

A.

10.32.1.2

B.

10.1.4.78

C.

10.48.1.1

D.

10.1.2.2

Question 123

Which of the following statements are TRUE about configuring a SDP between an IES and a VPLS? (Choose 2)

Options:

A.

The SDP must be a mesh

B.

The SDP must be a spoke.

C.

Once the SDP is configured on both PE routers, both the services will be operationally up without further configuration changes.

D.

The Layer 2 MTUs must match between the IES and the VPLS

E.

The Layer 2 MTU must be 14 bytes smaller on the VPLS than it is on the IES.

Question 124

Click on the exhibit.

Which of the following is FALSE?

Options:

A.

The router can reach prefix 192.10.1.2/32 through a RSVP-TE tunnel.

B.

The router can reach prefix 192.10.1.2/32 through an LDP tunnel.

C.

The router 10.10.10.2 is the egress router of the prefix 192.10.1.2/32.

D.

The Isp-ping tool is used to perform a unidirectional LSP test.

Question 125

Which of the following best describes a VPLS?

Options:

A.

Layer 3 direct Internet access service

B.

Layer 2 point-to-point service

C.

Layer 2 multipoint-to-multipoint service

D.

Layer 3 IP multipoint-to-multipoint VPN service

Question 126

Which of the following items can NOT be used as a mirror source?

Options:

A.

A physical port.

B.

ASAP.

C.

Ingress MPLS frames with a specific label.

D.

Entries that match an IP filter.

E.

Entries that match a MAC filter.

F.

All of the above can be used as a mirror source.

Question 127

An Alcatel-Lucent 7750 SR label switches a packet it receives. The packet has an outer label TTL of 250 and an inner label TTL of 251. Which of the following is TRUE?

Options:

A.

The outer label TTL will be 249 and the inner label TTL will be 250.

B.

The outer label TTL will be 249 and the inner label TTL will be 251.

C.

The outer label TTL will be 251 and the inner label TTL will be 251.

D.

The outer label TTL will be 251 and the inner label TTL will be 252.

Demo: 127 questions
Total 852 questions