DRAG DROP
Drag the MPLS Diff-Serv tunneling mode on the left to match the correct description on the right.
Answer: 
Explanation:
If a qos making (MPLS EXP) is changed in the MPLS network, it is also changed in the egress IP
Packet—short-pipe mode
This provide QOS transparency where the customer QOS marking (for example,DSCP) in the IP
Packet is preserved.The egress PE uses the original customer QOS marking instead of the
service provider QOS marking—pipe mode
Qos is done on the output interface of the PE router that is based on the receive —–Uniform mode
If a qos making (MPLS EXP) is changed in the MPLS network, it is also changed in the egress IP
Packet–>
Uniform ModeThis provide QOS transparency where the customer QOS marking (for example,DSCP) in the IP
Packet is
preserved.The egress PE uses the original customer QOS marking instead of the service provider
QOSmarking–> short-pipe modeQos is done on the output interface of the PE router that is based
on the receive–> pipe mode
Actual Answer should be TOP to BOTTOM –
Uniform Mode
Short-Pipe Mode
Pipe Mode
MPLS DiffServ QoS Models (RFC 3270)
Uniform mode
o the MPLS EXP value is changed in the provider core
o at the egress PE, the subscriber DSCP or TOS field values are altered
o the subscriber will need to reset the original value on the customer edge device
Pipe mode (point-to-point)
o provider uses its own MPLS EXP values, including an egress PE-CE link, but does not alter subscriber DSCP or TOS values
o subscribers receive traffic with their original DSCP or TOS marked value
Short-pipe mode
o the provider changes the MPLS EXP values in the core, but honors the subscriber DSCP or TOS values on the egress PE-CE link
http://www.cisco.com/c/en/us/support/docs/multiprotocol-label-switching-mpls/mpls/47815-diffserv-tunnel.html#modes