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4A0-C01 Practice Questions

Nokia NRS II Composite Exam

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Question # 111

If an Alcatel-Lucent 7750 SR is an iLER operating in pipe mode, which of the following regarding the TC field (EXP bits) is TRUE?

Options:

A.  

The TC field is set based on the value of the DSCP field inside the customer packet.

B.  

The TC field is set to a specific value via explicit administrative configuration.

C.  

The TC field is set to a system generated random number.

D.  

The TC field is set by the eLER.

Discussion 0
Question # 112

Click on the exhibit.

Question # 112

An LSP path is established on router R1 toward router R6. If the link between routers R4 and R6 goes down, which of the following is the quickest way for service recovery?

Options:

A.  

Router R1 updates its FIB after a new SPF calculation.

B.  

Router R1 switches to a secondary path.

C.  

Router R4 switches to a FRR path.

D.  

Router R4 switches to a standby secondary path.

Discussion 0
Question # 113

A network consists of 4 PE routers. A customer requires a VPLS service and has sites connected to each P

E.  

Each site must have direct connectivity with all other sites. How many SDPs must be configured on each PE?

Options:

A.  

0

B.  

2

C.  

3

D.  

4

Discussion 0
Question # 114

Click on the exhibit.

Question # 114

The path of a fast reroute protected LSP is R1-R2-R3. Which of the following about the protected LSP path is TRUE?

Options:

A.  

All routers along the path, R1, R2, and R3 can be PLRs.

B.  

If the R1-R2 link fails, router R4 becomes an MP.

C.  

If the R2-R3 link fails, router R3 becomes a PLR.

D.  

Router R1 is the LSP head-end and can be a PLR.

Discussion 0
Question # 115

How does a DMP inform the downstream routers that it has merged detour tunnels?

Options:

A.  

The DMP sends the DMP_Object in each detour's PATH messages.

B.  

The DMP summarizes PATH messages, giving each detour its own MSGJ

D.  

C.  

The DMP identifies itself as the previous hop in each detour's PATH message.

D.  

The DMP sends a single PATH message containing the merged DETOUR_Objects.

Discussion 0
Question # 116

Click on the exhibit.

Question # 116

All links have 1Gbps unreserved bandwidth initially and Shared Explicit reservation style is used. After the LSP's primary and standby secondary paths are signaled, how much unreserved bandwidth is left on the links?

Options:

A.  

R1-R2 will have 300Mbps left and R2-R4 will have 400Mbps left.

B.  

R1-R2 will have 400Mbps left and R2-R4 will have 400Mbps left.

C.  

R1-R2 will have 600Mbps left and R2-R4 will have 600Mbps left.

D.  

R1-R2 will have 300Mbps left and R2-R4 will have 600Mbps left.

Discussion 0
Question # 117

What is the purpose of the MPLS TC field (EXP bits)?

Options:

A.  

Each implementation can use it as they see fit.

B.  

It is used to carry the Ether type value.

C.  

It is used to carry the TTL value.

D.  

It is used to carry QoS classification.

E.  

It is used to carry fragmentation flag information.

Discussion 0
Question # 118

Click on the exhibit.

Question # 118

The LSP "toR6" is configured with a fully strict path on an Alcatel-Lucent 7750 SR. Which of the following configurations is required to enable fast reroute for this LSP?

Options:

A.  

Enable fast-reroute on all routers along the path. R1, R2, R4, and R6.

B.  

Enable both link-protection and node-protection on router R1.

C.  

Enable fast-reroute with either one-to-one or facility mode on this LSP.

D.  

Enable link-protection only on router R4.

Discussion 0
Question # 119

Which of the following devices inspects the MPLS header in the received packet, and exchanges it for a new MPLS header?

Options:

A.  

iLER

B.  

LER

C.  

LSR

D.  

PE

E.  

eLER

Discussion 0
Question # 120

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

Options:

A.  

Incoming label

B.  

Outgoing label

C.  

Incoming interface

D.  

Outgoing interface

Discussion 0
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