[Free] Download New Latest (June 2016) Cisco 400-201 Practice Test 241-250

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QUESTION 241

According to RFC 3931, L2TPv3 utilizes the IANA assigned IP protocol ID of:

 

A.

110

B.

101

C.

121

D.

51

E.

151

F.

115

 

Correct Answer: F

Explanation:

IP Protocol 115 (L2TPv3)

 

 

QUESTION 242

Which two implementations are standard Virtual Private LAN Service (VPLS) implementations that are supported by the IETF? (Choose two)

 

A.

VPLS uses LDP for signaling.

B.

VPLS uses BGP for autodiscovery and signaling.

C.

VPLS uses extended IS-IS for signaling

D.

VPLS uses OSPF version 3 for auto discovery and signaling

E.

VPLS uses spanning tree for signaling

 

Correct Answer: AB

 

 

QUESTION 243

In AToM, control word is an optional 4-byte field used in the pseudowire packet. The control word carries generic and Layer 2 payload-specific information to emulate L2 packets correctly. In pseudowire packet, where is this control word inserted?

 

A.

Inserted between the MPLS label stack and the Layer 3 payload

B.

Inserted between the MPLS label stack and the Layer 3 Header

C.

Inserted between the MPLS label stack and the Layer 2 payload

D.

Inserted between the MPLS label stack and the Layer 2 header

 

Correct Answer: D

 

 

QUESTION 244

Which statement about L2VPN Pseudowire Switching is not true?

 

A.

L2VPN Pseudowire Switching allows the user to extend L2VPN Pseudowires across an inter- AS boundary.

B.

L2VPN Pseudowire Switching allows the user to extend L2VPN Pseudowires across two separate MPLS networks.

C.

Quality of service is not supported per Pseudowire.

D.

L2VPN Pseudowire Switching connects two or more contiguous Pseudowires segments to from an end-toend multihop Pseudowire.

E.

The Cisco MPLS Traffic Engineering tunnel selection is not supported.

 

Correct Answer: E

Explanation:

Reference: http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fsstitch.html#wp1053770

 

 

QUESTION 245

What is the data encapsulation method for the VPLS virtual circuit (VC)?

 

A.

MAC over MPLS

B.

L2TPV3

C.

802.1 QinQ

D.

Ethernet over MPLS

E.

GRE

 

Correct Answer: D

 

 

QUESTION 246

DRAG DROP

Drag the command on the left to the correct step on the right to perform Frame Relay interworking with Ethernet over MPLS on a Cisco IOS router.

 

clip_image002

 

Correct Answer:

clip_image004

 

 

QUESTION 247

Which two statements are correct?

 

A.

A VC type 5 transports a VLAN over MPLS.

B.

A VC type 4 tunnels an Ethernet port over MPLS.

C.

A VC type 5 tunnels an Ethernet port over MPLS.

D.

A VC type 4 transports a VLAN over MPLS.

 

Correct Answer: CD

Explanation:

VC Type 4 is used for Ethernet VLAN mode.

VC Type 5 is used for Ethernet Port mode.

 

 

QUESTION 248

Packed Cell Relay encapsulation with AToM includes which of the following? (Choose four.)

 

A.

Tunnel label

B.

VC-label

C.

5-byte ATM header

D.

Payload

E.

4 byte ATM header

F.

Support for 30 packed cells.

 

Correct Answer: ABDE

Explanation:

Packed cell relay (cell packing). This allows the encapsulation of multiple ATM cells in each AToM data channel packet.

 

 

QUESTION 249

In the case of Ethernet transport, which two types of attachment circuits does L2TPv3 support? (Choose two.)

 

A.

port tunneling on the Ethernet subinterface

B.

VLAN tunneling on the Ethernet trunk

C.

port tunneling on the Ethernet interface

D.

VLAN tunneling on the Ethernet VLAN subinterface

E.

port tunneling on the Ethernet trunk

 

Correct Answer: CD

Explanation:

L2TPv3 can be configured on either a physical port or on a subinterface. The first is known as Port tunneling and the second as vlan tunneling.

 

 

QUESTION 250

Which three statements about L2TPv3 are true? (Choose three)

 

A.

L2TPv3 Frame Relay support includes only 32-bit DLCI addressing.

B.

L2TPv3 sessions do not support Frame Relay LMI interworking.

C.

Multipoint DLCI is not supported.

D.

To use DCE or a Network-to-Network Interface on a Frame Relay port, you must configure the frame-relayswitching command.

E.

L2TPv3 feature does not support Frame Relay extended addressing.

 

Correct Answer: CDE

Explanation:

Frame Relay-Specific Restrictions

Frame Relay per-DLCI forwarding and port-to-port trunking are mutually exclusive. L2TPv3 does not support the use of both on the same interface at the same time.

The xconnect command is not supported on Frame Relay interfaces directly. For Frame Relay, the Xconnect is applied under the connect command specifying the DLCI to be used.

Changing the encapsulation type on any interface removes any existing xconnect command applied to that interface.

To use DCE or a Network-to-Network Interface (NNI) on a Frame Relay port, you must configure the framerelay switching command.

The configuration of an L2TPv3 session on a Multilink Frame Relay (MLFR) bundle interface is supported only on Cisco 12000 series Two-Port Channelized OC-3/STM-1 (DS1/E1) and Six-Port Channelized T3 (T1) line cards. (For more information, see Binding L2TPv3 Sessions to Multilink Frame Relay Interfaces.)

Frame Relay policing is nondistributed on the Cisco 7500 series. By configuring Frame Relay policing, you cause traffic on the affected PVCs to be sent to the RSP for processing.

Frame Relay support is for 10-bit DLCI addresses. Frame Relay Extended Addressing is not supported.

Multipoint DLCI is not supported.

The keepalive will automatically be disabled on interfaces that have an Xconnect applied to them, except for Frame Relay encapsulation, which is a requirement for LMI.

Static L2TPv3 sessions will not support Frame Relay LMI interworking.

 

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