Free Cisco 642-887 Exam Dumps Questions & Answers

A network operations center analyzes a Wireshark capture and tries to verify which QoS policy is effective over a customer router. How many bits define the DSCP values?

• A.  3
• B.  8
• C.  6
• D.  16

Why is TCP traffic the most common type of traffic in WRED QoS strategies?

• A.  TCP senders reduce traffic rates if they detect that traffic was dropped
• B.  When TCP receivers need the traffic rate to be reduced, they send an alert to the sender
• C.  TCP traffic is less secure, so WRED increases the delivery rate.
• D.  TCP is unreliable, so it can recover when traffic is dropped.

Which four options describe the functions of the control world in an AToM environment? (Choose four.)

• A.  It is responsible for padding the small packets.
• B.  It prevents fragmentation and reassembly.
• C.  It enables proper load balancing without packet desequencing independent of L2VPN packet content.
• D.  It carries Layer 2 payload-specific information.
• E.  It enables an optimal path for the L2VPN packet content to follow through the MPLS backbone.
• F.  It carries generic and Layer 2 payload-specific information.
• G.  It is responsible for padding all packets.
• H.  It preserves the sequence of the transported frames.

Which two advantages are reasons that service providers might deploy MPLS? (Choose two.)

• A.  to facilitate smooth migrations between legacy WAN technologies
• B.  to reduce the throughput overhead of full IPv4/IPv6 headers when traversing the core
• C.  to reduce the computational requirements that are placed on router CPUs
• D.  to reduce configuration and feature requirements in the core
• E.  to avoid using IGP in the core