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QUESTION 72
On P2IOS-XR router what is targeted LDP hellos hold time on LDP session with 10.0.1.1:0 LDP ID?

A. 90 sec
B. 10 sec
C. 3 sec
D. 8.6 sec

Answer: A
Explanation:
Issue on P2: show mpls ldp discovery (details).
Ps: The command show mpls ldp parameter is not Implemented. Look at the end, you will see the hello and the holdtime values for the target neighbour. Be careful he is asking for “targeted LDP hellos hold time”. No other command will work!!! At the end of the show result you will see something looks like the following:
LDP discovery sources:
Targeted Hello 10.0.2.1 -> 10.0.1.1 active, passive; Hello: 30 sec
holdtime: 90 sec

QUESTION 73
From PE8 router, what is the label action used to reach the P2 loopback 0 interface 10.0.2.1/32?

A. Swap label 35 with label 16004
B. Push label 16004
C. Pop label 35
D. Pop label 16009
E. Push Label 16009
F. Swap label 35 with label 16009

Answer: C
Explanation:
show mpls forwarding-table , find prefix 10.0.2.1 and you will see there under outgoing Label “Pop Label” (This is actually logic because the prefix is directly connected and therefore the packet will forward without label). If the router should forward any packet to that prefix, the packet should be received with Local label on PE8 (Local Label = 35), the router will remove it and forward it without Label.

QUESTION 74
From the PE8 router, how many total prefixes for have an incoming local label assigned (including the imp-null)?

A. 45
B. 21
C. 66
D. 22

Answer: B
Explanation:
On PE8 issue: show mpls ip binding summary and look at “assigned in labels”. That value is the correct answer NOT “learned out label”.

QUESTION 75
On CE 7 router, which statement is correct regarding the “QOS-POLICY policy map configurations?

A. Traffic matched bythe”QOS-HTTP-1″ class-map is shaped to an average is rate of 2560000 128000bps
B. Traffic matched bythe”QOS1-HTTP-2″ class-map will be queued in the low-latency-queue which has a
maximum bandwidth guarantee of 64000
C. Traffic matched by the “QOS-FTP-1” class-map can’t use more than 256 Kbps under any condition
D. The “QOS-POLICY is applied to the gi0/0 interface in the input direction

Answer: C
Explanation:
# show policy-map
# show policy-map interface x/y
# show running-config policy-map

QUESTION 76
After reviewing present router configuration CE7 .which two statements are correct regarding behaviors of the “IIq” policy-map? (Choose 2)

A. Traffic matched by the “cisco1” class-map will be assigned to the priority queue.
B. The “IIq” QoS policy is applied to the gi0/0 interface in the output direction
C. Traffic matched bythe”cisco2″ class-map has a maximum bandwidth of 30%
D. Traffic matched bythe”cisco3″ class-map has no priority and has a minimum bandwidth guarantee of 20%
E. There are no packets being matched by the “class-default” traffic class in the “IIq” policy

Answer: AD
Explanation:
You will notice that “cisco1” class map is assigned to the priority queue (the command is configured under policy-map IIq class cisco1 priority xxx) “cisco2” class map: is indeed configured using bandwidth 30%, however that defines the minimum bandwidth but not the maximum.
“cisco3” class map: is indeed configured using “bandwidth 20%”, No priority configured and that will define the minimum guaranteed bandwidth.
The last choice is wrong! check under “show policy-map interface” There are 4 or more packets being matched by the “class-default” traffic class in the “IIq” policy.
Class-map: class-default (match-any)
4 packets, 968 bytes

QUESTION 77
On CE7 which statement is correct regarding Traffic the QoS policy applied to the gi0/0 interface in the input direction?

A. Traffic matching the “MARKING2” class-map will be marked with qos-group 5
B. Traffic matching the “MARKING1” class-map will be marked with MPLS EXP 5
C. All incoming packets not matched bythe”MARKING1″ class-map will be dropped
D. All incoming packets with the DSCP EF marking with be marked with MPLS EXP 0

Answer: B
Explanation:
Issue: show policy-map interface gi0/0 First find out which policy-map is applied (it called something like QOSPOLICY1) A is wrong. Class MARKING2 is indeed defined but not applied to that policy-map. There are two class-maps applied MARKING1 and class-default. Both will mark the traffic with MPLS EXP values.
default:
set mpls experimental imposition 0
MARKING1
set mpls experimental imposition 5

QUESTION 78
On PE7 which statement is correct regarding the “traffic-policing” policy-map?

A. The “traffic-policing” QoS policy is applied to the Gi0/0/0/0 interface in the outbound direction.
B. The “traffic-policing” QoS policy will police the traffic matched by the “test12” ACL to 3 mbps and will
drop all exceeding traffic.
C. All incoming traffic not matched by the “test12” ACL to the Gi0/0/0/0 interface will be dropped.
D. The “traffic-policing” QoS policy is using dual rate class-based traffic policing.

Answer: B
Explanation:
#show policy-map

QUESTION 79
Which affinity and mask value will match the link affinity that has 0x0F in the first 8 bits and 0x01 in the last 8 bits, and the middle 16 bits can be any value?

A. affinity 0x0F000001 mask 0x0F000001
B. affinity 0x0F000001 mask 0x00000000
C. affinity 0x0F000001 mask 0x11111111
D. affinity 0x0F000001 mask 0x11000011
E. affinity 0x0F000001 mask 0xFF0000FF
F. affinity 0x0F000001 mask 0x00FFFF00

Answer: E

QUESTION 80
Which two features are used to provide Cisco MPLS TE node and link protection? (Choose two.)

A. autoroute
B. fast reroute
C. backup tunnels
D. BFD

Answer: BC

QUESTION 81
What are the four fields inside the MPLS shim header? (Choose four.)

A. EXP
B. TTL
C. Version
D. S
E. Length
F. Label
G. Type
H. FCS

Answer: ABDF

QUESTION 82
Which two of the following statements are correct regarding LSPs? (Choose two.)

A. An LSP is created for every routing protocol entry.
B. Each LSP is bidirectional, that is, packets traveling in the opposite direction use the same LSP.
C. An IGP is used to populate routing tables in all routers in an MPLS domain.
D. LDP is used to propagate labels and build LSPs.
E. The FIB is used to forward MPLS-labeled packets down an LSP.

Answer: CD


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