Nokia 4A0-C01 Exam Questions Free Practice Test

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Questions # 201:

Epipe services do no consume any MAC resources because MAC learning is disabled.

Options:

TRUE

FALSE

Expert Solution

Questions # 202:

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

Options:

A VPLS service does not use an FDB.

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

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

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

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

Expert Solution

Questions # 203:

Which VPWS service would be used to create a point-to-point Frame Relay service?

Options:

Epipe

Apipe

Fpipe

Ipipe

Cpipe

Expert Solution

Questions # 204:

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

Options:

An SDP does not have a path-mtu

The path-mtu must be set by the administrator.

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

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

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

Expert Solution

Questions # 205:

An operator needs to provision 6VPE on a 7750 SR that is also used to provide existing IPv4 VPRN services. IPv6 VPRN customers use BGP as a PE-CE protocol. Which of the following statements is FALSE regarding the configuration steps required?

Options:

MP-BGP sessions need to be configured in the service provider network to support a VPN-IPv6 address family.

PE routers must be configured to run MP-BGP and IPv6

PE-to-CE BGP sessions need to be configured to support IPv6.

The provider core must be configured to support IPv6

None of the above statements are false.

All of the above statements are false

Expert Solution

Questions # 206:

Which of the following statements is FALSE about the VPN label?

Options:

The VPN label is signaled between PE devices using MP-BGP.

The VPN label is swapped at each P router as a packet crosses the service provider network.

The VPN label is also known as the inner label or service label.

The VPN label indicates which VPRN a packet should be sent to once it reaches the egress PE.

All of the above

Only C and D.

Expert Solution

Questions # 207:

Which of the following LDP settings can be changed with CLI?

Options:

Label space mode

Label retention

Control mode

Keepalive factor

Expert Solution

Questions # 208:

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

Options:

The SDP must be a mesh

The SDP must be a spoke.

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

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

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

Expert Solution

Questions # 209:

Click on the exhibit. After the Isp-ping command is executed, which of the following best describe the router's action?

Options:

MPLS Echo Request packets are sent within the RSVP-TE tunnel that is signaled for "lsp-toR2".

MPLS Echo Request packets are sent within the LDP tunnel that is signaled for Mlsp-toR2".

MPLS Echo Request packets are IP-routed to the destination address of "lsp-toR2".

MPLS Echo Request packets are sent to the destination address of "lsp-toR2" over TCP.

Expert Solution

Questions # 210:

Click on the exhibit.

Question # 210

All links have 1 Gbps unreserved bandwidth initially and all LSPs have the least-fill feature enabled. After the two LSPs have been signaled as shown, two additional LSPs are configured.

LSP-3 is signaled first with 50Mbps reserved. LSP-4 is signaled after with 400Mbps reserved.

Which paths will CSPF choose for LSP-3 and LSP-4?

Options:

Both LSP-3 and LSP-4 take R1-R2-R4-R6.

Both LSP-3 and LSP-4 take R1-R3-R5-R6.

LSP-3 takes R1-R3-R5-R6 and LSP-4 takes R1-R2-R4-R6.

LSP-3 takes R1-R2-R4-R6 and LSP-4 takes R1-R3-R5-R6.

CSPF randomly chooses one of the equal cost paths for the two LSPs.

Expert Solution

Questions # 211:

Which of the following statements is FALSE regarding 6VPE?

Options:

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

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

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

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

All of the above statements are true.

All of the above statements are false.

Expert Solution

Questions # 212:

Click on the exhibit button below.

Question # 212

If CE1 and PE1 use BGP to exchange routing information and CE2 and PE2 use static routing to forward traffic to and from the VPRN, which of the following statements is considered TRUE?

Options:

An export policy is required on PE1 to advertise routes to CE1.

An export policy is not required on PE2 to advertise routes to CE2.

An export policy is not required to advertise routes between PE routers

All of the above statements are true

All of the above statements are false

Expert Solution

Questions # 213:

When a physical port is configured for null encapsulation, many SAPs can be configured using that port.

Options:

TRUE

FALSE

Expert Solution

Questions # 214:

Which of the following best describes a distributed Epipe Service?

Options:

An Epipe that has 2 or more SDPs configured.

An Epipe that has 3 or more SAPs configured.

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

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

Expert Solution

Questions # 215:

Which of the following messages is NOT used in T-LDP operation?

Options:

Hello message

Init message

Keepalive message

Label Mapping message

ACK message

Expert Solution

Questions # 216:

Which of the following regarding the location of an MPLS label is FALSE?

Options:

The MPLS label value may be carried in an ATM header.

The MPLS label value may be carried in a shim header.

The MPLS label value may be carried in an OSPF header.

The MPLS label value may be carried in a Frame Relay header.

Expert Solution

Questions # 217:

Which of the following about T-LDP on the Alcatel-Lucent 7750 SR is FALSE?

Options:

T-LDP is used to provide an end-to-end session between two PE routers.

T-LDP is used to signal service labels for Layer 2 services.

T-LDP is used to establish transport tunnels for Layer 2 services.

T-LDP is used in LDP over RSVP solution.

Expert Solution

Questions # 218:

Initially, all ports on an Alcatel-Lucent 7750 SR have 10Gbps bandwidth. RSVP configuration limits reservable bandwidth to 30 percent on all interfaces. An LSP is signaled reserving 1 Gbps bandwidth. How much unreserved bandwidth is left on the interface?

Options:

10 Gbps

7 Gbps

3 Gbps

2 Gbps

Expert Solution

Questions # 219:

Click on the exhibit.

Question # 219

Why might router R2 have a Link LDP session to R1 (10.10.10.1:0) but not to R3 (10.10.10.3:0)?

Options:

LDP is not configured on R2.

R2 does not have a route to 10.10.10.3.

LDP is not configured on R3's interface to R2.

The targeted session is not configured on R2.

Expert Solution

Questions # 220:

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

Options:

Label

Frame check sequence

Traffic Class (previously called Experimental)

Time To live

Bottom of stack bit

Expert Solution

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