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Question # 4

What command will show the OSPF neighbors, and their status on the Nokia 7750 SR?

A.

Show ospf neighbors

B.

Show router ospf neighbors

C.

Show router ospf adjacency

D.

Show ospf adjacency

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Question # 5

Which of the following about Fast Reroute link protection tunnels is FALSE?

A.

Link protection tunnels are established if a router is unable to establish node protection tunnels.

B.

Link protection tunnels are only requested for a primary LSP path.

C.

Link protection tunnels can be created for both one-to-one or facility Fast Reroute.

D.

Link protection tunnels detour around a failed next downstream router.

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Question # 6

Click the exhibit.

AS 65100 is advertising 192.168.1.0/27 into BGP. Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R8?

A.

65200 (65206 65202) 65100

B.

(65206 65202)65100

C.

65250 (65206 65202) 65100

D.

65200 65100

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Question # 7

When configuring distributed services across a network, it is considered best practice to configure which of the following parameters as globally significant?

A.

Customer ID and SAP ID.

B.

Customer ID and Service ID.

C.

SAP ID and Service ID.

D.

SDP ID and Service ID.

E.

SDP ID and SAP ID.

F.

SDP ID and VC ID.

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Question # 8

Which of the following correctly lists the 5 OSPF packet types?

A.

Hello, link state update, link state packet, link State acknowledgement, database description.

B.

Link state update, link state refresh, link state acknowledgement, database description, notification.

C.

Hello, link state refresh, link state update, link state acknowledgement, link state authentication.

D.

Hello, link state update, link state request, link state acknowledgement, database description.

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Question # 9

Which of the following prefix-lists is the most specific match for prefix 172.31.2.1/24?

A.

Prefix 172.16.0.0/12 longer.

B.

Prefix 172.31.0.0/22 longer.

C.

Prefix 172.31.0.0/23 longer.

D.

Prefix 172.31.0.0/24 exact.

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Question # 10

Click on the exhibit.

What is the possible reason that the label for prefix 192.10.1.2/32 is not active?

A.

The router does not have a route to reach to the peer 10.10.10.2/32.

B.

The router does not have a route to reach to the prefix 192.10.1.2/32.

C.

The router does not have an export policy defined to export the prefix 192.10.1.2/32 into LDP.

D.

The router receives an invalid label for the prefix 192.10.1.2/32 from its peer.

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Question # 11

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?

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.

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Question # 12

What Nokia 7750 SR OAM tool can be used to verify the end-to-end connectivity of a service?

A.

Sdp-ping

B.

Isp-ping

C.

Svc-ping

D.

Sdp-mtu

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Question # 13

Click the exhibit.

Assuming that none of the routers within AS 65200 is configured with next-hop-self", what will the BGP update for the 192.168.0.1/27 prefix contain when it arrives at router B?

A.

AS Path of 65200 65100, Next Hop of router A.

B.

AS Path of 65200 65100, Next Hop of router E.

C.

AS Path of 65100, Next Hop of router E.

D.

AS Path of 65100, Next Hop of router A.

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Question # 14

Which of the following about route distinguishes on the Nokia 7750 SR is TRUE?

A.

Route distinguishes are appended to IPv4 prefixes to form IPv6 prefixes.

B.

CE routers use a route distinguisher to indicate which VPRN they are associated to.

C.

A route distinguisher combined with an IPv4 prefix produces a VPN-IPv4 prefix.

D.

Route distinguishes are used to determine which routes a VPRN should import.

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Question # 15

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

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.

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Question # 16

An OSPF ASBR must have at least one interface in the backbone area (area 0)

A.

True

B.

False

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Question # 17

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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Question # 18

Which of the following is considered a best practice for BGP address planning?

A.

Advertising external networks into IGP.

B.

Using system addresses for setting up iBGP sessions.

C.

Exporting the networks associated with the external links of eBGP peers into BGP.

D.

Optimizing BGP route table by exporting IGP routes into BGP.

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Question # 19

Facility fast reroute with node protection is enabled for an LSP, which of the following is FALSE?

A.

Each PLR signals a bypass tunnel that avoids the next-hop downstream router.

B.

When a failure occurs, the PLR pushs an additional label onto the label stack.

C.

No bypass tunnel is established if the PLR cannot provide node protection.

D.

The head-end router sets the local protection desired flag in the session attribute object.

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Question # 20

Which of the following about transport and service tunnels is FALSE?

A.

Service tunnels are unidirectional.

B.

Transport tunnels are unidirectional.

C.

A service will use the same service label for every hop.

D.

A local service requires a transport tunnel.

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Question # 21

Click on the exhibit.

A fully loose LSP "toR6" is configured. All links have the same cost and all routers are Nokia 7750 SRs. The LSP currently traverses the path R1-R2-R7-R8-R4-R6 and the resignal timer is enabled. Which of the following about this LSP is FALSE?

A.

The LSP will switchover to another path if a failure occurs.

B.

The LSP will switchover to a better path as soon as it is available.

C.

CSPF must be enabled for this LSP to attempt to find a better path.

D.

The LSP will switchover to a better path in a MBB fashion.

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Question # 22

Click the exhibit button.

192.168.3.1 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3. Which of the following is a possible solution to the problem?

A.

Add the "originate-default-route" option in the NSSA area configuration on router R3

B.

Add the "summaries" option to the NSSA area configuration on router R1

C.

Make a static route on router R1 to 192.168.3.1

D.

Make a default route on router R2

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Question # 23

A default route for a client is also known as the:

A.

Default path

B.

Default gateway

C.

Gateway path

D.

Proxy ARP

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Question # 24

What must be configured on the Nokia 7750 SR for RIP to advertise locally attached links?

A.

A policy statement within the router identifying what is to be advertised

B.

Access-lists denoting what is to be advertised

C.

Default metrics for each link

D.

A group and neighbor statement for each peer

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Question # 25

Click on the exhibit.

An LSP path is established on router R1 toward router R6. If there is a problem on router R4, but the link between R2 and R4 remains up, which of the following will affect the failure detection time?

A.

The time router R2 takes to receive a PATH Error message from router R4.

B.

The time router R2 takes to find out a number of RSVP Hello messages have been missed.

C.

The time router R2 takes to send a PATH Tear message to the head-end router.

D.

The time router R2 takes to receive a PATH message from router R4 after a PATH refresh interval.

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Question # 26

Click the exhibit button.

The OSPF adjacency between routers R3 and R1 is down. What is the problem?

A.

Area 1 of router R1 should not be configured as a stub.

B.

Router R3 has the incorrect authentication key type.

C.

Router R1 has the incorrect authentication key type.

D.

There is not enough information to tell.

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Question # 27

Which of the following about Type 10 opaque LSAs is TRUE?

A.

Type 10 opaque LSAs are supported by IS-IS.

B.

Type 10 opaque LSAs are flooded to all areas of the routing domain.

C.

Type 10 opaque LSAs are stored in an LSDB.

D.

Type 10 opaque LSAs are used for traffic engineering support.

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Question # 28

What class of attribute is Originator_ID?

A.

Well-known mandatory.

B.

Well-known discretionary.

C.

Optional transitive.

D.

Optional non-transitive.

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Question # 29

Fill in the blanks: A ________device has all interfaces inside the provider domain, and a _______ device has at least one interface outside the provider domain.

A.

PE, P

B.

P, PE

C.

PE, CE

D.

CE, PE

E.

CE, P

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Question # 30

Click the exhibit.

AS 65550 owns CIDR block 10.64.0.0/12. Router R6 advertises the aggregate 10.64.0.0/12 to AS 65541 with "as-set" enabled. Which of the following is TRUE regarding the aggregate route received by router R7?

A.

The AS Path is set to 65540, and the Atomic Aggregate flag is set.

B.

The AS Path is set to 65540 65550, and the Atomic Aggregate flag is set.

C.

The AS Path is set to 65540 65550, and the Atomic Aggregate flag is not set.

D.

The AS Path is set to 65550, and the Atomic Aggregate flag is not set.

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Question # 31

What type of OSPF router generates a type 2 LSA?

A.

Area Border Router

B.

Autonomous System Boundary Router

C.

Designated Router

D.

All routers within an OSPF area.

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Question # 32

Which MPLS mode saves only active label mappings received from peer LSRs?

A.

Conservative label retention

B.

Liberal label retention

C.

Downstream on demand

D.

Downstream unsolicited

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Question # 33

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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Question # 34

Which of the following about the Link LDP discovery process on the Nokia 7750 SR is FALSE?

A.

LDP Hello messages are sent over TCP.

B.

LDP Hello messages are sent to the All Routers address 224.0.0.2.

C.

LDP Hello messages are exchanged between all directly connected LDP enabled routers.

D.

Each LDP enabled router must have its own unique system IP address.

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Question # 35

Consider a device that uses per-platform label space; which of the following fields is NOT contained in the LFIB?

A.

Incoming label

B.

Outgoing label

C.

Incoming interface

D.

Outgoing interface

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Question # 36

Which of the following best describes downstream on demand label distribution?

A.

An LSR answers requests for label mappings immediately, without waiting for a label mapping from the next-hop.

B.

An LSR advertises label mappings to all peers for which it might be a next-hop for a given FEC.

C.

An LSR distributes a label mapping for a FEC when it has been requested to do so.

D.

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

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Question # 37

In a Layer 2 encapsulation using T-LDP, what does the second (bottom) label represent?

A.

Tunnel Label

B.

VC Label

C.

Operational Control Word

D.

VPI

E.

VCI

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Question # 38

Which of the following concerning OSPFv3 is TRUE?

A.

OSPFv3 uses MD5 Authentication.

B.

Router LSAs carry IPv6 prefix information.

C.

NSSA is supported in OSPFv3.

D.

OSPFv3 uses a 64-bit router ID.

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Question # 39

How is the aggregator attribute handled with 32-bit AS numbers?

A.

With the same method and attribute as 16-bit AS numbers.

B.

With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.

C.

Aggregation is not yet supported with 32-bit AS numbers.

D.

By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTLV.

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Question # 40

Which of the following is TRUE if the local state of BGP is OpenConfirm?

A.

The local system has received a Keepalive message and is ready to exchange updates.

B.

The local system is exchanging Update messages with its neighbor.

C.

The local system has sent a Keepalive message to its neighbor and is waiting to receive one back.

D.

The local system has sent an Open message to its neighbor and is waiting to receive one back.

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Question # 41

Which of the following about IS-IS Traffic Engineering on an Nokia 7750 SR is FALSE?

A.

Traffic engineering information is carried in the extended TLVs.

B.

Traffic engineering must be enabled on all IP/MPLS routers along the LSP path.

C.

Traffic engineering information is stored in the opaque database,

D.

Traffic engineering is required for constraint-based LSPs.

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Question # 42

Which of the following LSA types stay within an OSPF area, and are not flooded outside of the area? Choose two answers.

A.

Router LSA

B.

Network LSA

C Summary network LSA

C.

Summary router LSA

D.

Type 5 (AS external) LSAs

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Question # 43

A confederated AS is comprised of three members. One member is comprised of 4 routers, while the other two members are comprised of 3 routers each. Assuming member ASs are fully meshed and use full mesh iBGP, what is the required number of BGP sessions within the confederation?

A.

12

B.

13

C.

14

D.

15

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Question # 44

What causes an adjacency to change from "Init" to "Two Way"?

A.

When a Link State Update is received in response to a Link State Request

B.

When a router receives a Hello packet from a neighbor that contains its router id in the neighbor list

C.

When OSPF neighbors exchange Database Descriptor packets

D.

When a Link State Acknowledgement is received in response to a Link State Update

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