Cisco 642-889 Online Practice Questions and Exam Preparation

Cisco 642-889 Online Questions & Answers

• Question 111:

  You configure VPLS with BGP signaling. In the encapsulation information, S has a value of 1.

  Which item is required when VPLS packets are sent to this PE?

  A. A control word must be present
  B. Flow label is not required
  C. Delivery of frames must be in order
  D. Delivery of frames does not need to be in order
  C. Delivery of frames must be in order

• Question 112:

  DRAG DROP

  Drag each item on the left to match the correct standard organization on the right.

  Select and Place:

  

  

• Question 113:

  Which benefit is an advantage to configuring IPv6 over a circuit transport over MPLS for a client?

  A. fully transparent IPv6 communication
  B. IPv6 software upgrade for PE routers
  C. VPN-like IPv6 cloud isolation
  D. only minor modifications are required on the existing MPLS core
  A. fully transparent IPv6 communication

• Question 114:

  Which two protocols can be used for VPLS signaling on a Cisco IOS XR router? (Choose two.)

  A. BGP
  B. LDP
  C. TDP
  D. RSVP
  E. PBB
  A. BGP
  B. LDP

• Question 115:

  A PE configured with VRF ABC needs to export only subnet 1.1.1.1/32 with RT 100:100 without losing its original RT 200:200 to a remote PE. Which configuration is correct?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  C. Option C

• Question 116:

  Refer to the exhibit.

  

  Which two descriptions outline the traffic flow among the three sites? (Choose two.)

  A. The MNL site communicates with the XYZ and ABC sites.
  B. The XYZ and ABC sites communicate using the default route that points to the MNL site.
  C. XYZ sees the MNL and ABC routes.
  D. ABC sees the MNL and XYZ routes.
  E. The MNL site acts as a central site for the ABC and XYZ sites.
  A. The MNL site communicates with the XYZ and ABC sites.
  E. The MNL site acts as a central site for the ABC and XYZ sites.

• Question 117:

  Which two statements about implementing a separate MPLS VPN to provide customers Internet access are correct? (Choose two.)

  A. The Internet gateway router will act as a CE router.
  B. Customers will use separate interfaces for VPN and Internet access.
  C. Customers are assigned to the Internet VPN.
  D. Internet routes will be leaked from the PE global routing table to the customer VRF.
  A. The Internet gateway router will act as a CE router.
  C. Customers are assigned to the Internet VPN.

• Question 118:

  Refer to the exhibit.

  

  PE1 and PE2 are advertising the same subnet 10.10.10.0/24 and export route-target to PE3. Which PE advertised subnet is installed at the PE3 BGP table?

  A. PE1 subnet only, due to higher BGP assigned weight.
  B. PE2 subnet only because it is a member in the same VRF.
  C. PE1 and PE2 subnets
  D. PE1 and PE2 subnets as 300:300:10.10.10.0/24
  C. PE1 and PE2 subnets

• Question 119:

  The network operations center wants support to finalize an L2VPN AToM configuration on a regular IOS instance. After the configuration of the PW class, the connect/xconnect command, the PVC and the verification of interface status, the two Frame Relay attachment circuits are not connecting. What else should be enabled when implementing Frame Relay over an L2VPN?

  A. PE routers are required to enable the frame-relay switching command to switch frames between the VC and the attachment circuits
  B. The connect command is legacy. The only command that is required to establish a VC is the xconnect command on the PE router on which the PVC is configured
  C. PE routers are required to enable the frame-relay inverse-arp command to map the DLCI to AToM VPNs
  D. The interworking ip command must be enabled to avoid issues between Frame Relay encapsulations
  B. The connect command is legacy. The only command that is required to establish a VC is the xconnect command on the PE router on which the PVC is configured

• Question 120:

  An engineer is reviewing the configuration for establishing MP-iBGP sessions between two PE routers (PE-A and PE-B) with the goal of exchanging IPv4 prefixes in an MPLS L3VPN environment. Which configuration output does the engineer

  use to achieve this goal?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  B. Option B