Alcatel Lucent IPMPLS Mobile Backhaul Transport Set 1

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Alcatel Lucent IPMPLS Mobile Backhaul Transport
Alcatel Lucent IPMPLS Mobile Backhaul Transport Set 1

Which statement correctly describes a Versatile Service Module (VSM) Layer 2 and Layer 3 service cross- connect's operation?

Layer 3 Service Access Points (SAPs) must use the "A" paths; Layer 2 services use the B path

✘ The Cross Connect Aggregation Group (CCAG) B path can optionally act as a hot standby path for theA path ✘ A CCAG may rate limit the A or B path all the way up to the maximum CCAG available bandwidth ✘ For resiliency, the CCAG distributes each conversation flow across multiple Cross Connect Adapters(CCA) ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which statement correctly describes Virtual Routing and Redundancy Protocol (VRRP) configuration?

The router assigns priority 100 to a non-owner VRRP interface by default ✘ An interface can only be a member of a single Virtual Router ID (VRD) ✘ An owner mode VRID can back up as many as sixteen virtual gateway addresses ✘ An owner mode VRID requires a backup address not used by the physical interfaces ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

A network element (NE) forwards external traffic through a Virtual Routing and Redundancy Protocol (VRRP) protected gateway interface. If the master goes offline, how does the NE learn to forward traffic to the new master interface?

Upon assuming the master role, the new master advertises its presence through Gratuitous Address
Resolution Protocol (ARP) messages ✘ The master updates the forwarding table entries by delivering all frames into the network using thevirtual Media Access Control (MAC) source address ✘ The network elements use their current gateway interface ARP cache entry or send out an ARP requestif the entry is timed out ✘ The new master interface delivers the new virtual interface MAC address into the network via MasterAdvertisement Messages ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which statement correctly describes SROS Virtual Private Wire Service (VPWS) endpoint characteristics?

An implicit endpoint may have both a SAP and a spoke SDP object ✘ Within a local service context a router willonlyforward traffic between objects in different endpoints ✘ An explicit ePipe service endpoint may have up to four associated SAP objects, but only one forwarding ✘ An explicit endpoint may contain up to four primary pseudowire objects to support load balancing ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

As cells enter an aPipe service configured for vc-type atm-vcc, how does the ingress Provider Edge (PE) router handle the cell header Virtual Path Identifier/Virtual Channel Identifier (VPI/VCI) values?

The PE strips the cell headers and transports just the payload with a control word ✘ The PE replaces the VPI/VCI with the MPLS service label and control word ✘ The PE replaces the VPI/VCI with another set defined within the service context ✘ The PE transports the original VPI/VCI along with the payload to the egress PE ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which statement is correct concerning spoke SDP use in point-to-point services?

Each service requires its own set of SDPs ✘ The spoke SDP must specify the vc-type of the service transported ✘ SDP bindings must include the service encapsulation type value ✘ An explicit endpoint may have up to four spoke SDP bindings ✔ Each service includes two default explicit endpoints ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which statement is true concerning aPipe ATM cell mode versus ATM Adaptation Layer (AAL) 5 Service Data Unit (SDU) frame mode?

AAL5 SDU frame mode supports ATM cell concatenation ✘ ATM cell mode can bind multiple virtual circuits to a single service ✘ AAL5 SDU frame mode passes the cell header with the payload ✘ ATM cell mode requires a control word for cell reordering ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which statement correctly describes bi-directional Automatic Protection Switching (APS) as implemented in SROS?

The endpoints transmit the same data on the working and protect circuits ✘ The endpoints send K2 keepalive bits on the working and protect circuits ✘ A failure on the receive path causes both paths to switch to the protect circuit ✘ Either the working or protection circuit can signal an APS switch ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which statement correctly describes an MSP Aggregation Gateway (MG) function?

It aggregates and terminates base station traffic for multiple mobile operators ✘ It resides in the MTSO and terminatesBTP transport interfaces at theUNI-MG ✘

It aggregates and delivers cell site traffic to the mobile operator's control elements

✘

It terminates the backhaul transport provider's SONET or TDM transport interfaces

✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

10.

Which statement correctly describes a Point-to-Point (PPP) Multilink Protocol (MP) frame characteristic?

The MP frame header carries the Layer 3 payload fragment offset value ✘ The CLS field identifies the frame's Differentiated Services Code Point (DSCP) value ✘ Only the first fragment in a sequence carries the Layer 3 payload header ✘ The frame's B and E bits indicate payload discard eligibility ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

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