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NEW QUESTION 1
An engineer is setting up a routing instance to route the traffic across the back-up tunnel on a deployed Cisco MPLS TE next-hop protection. Which option describes the result?
- A. a static route that points to the link
- B. BGP routes that points to the link
- C. an OSPF or IS-IS instance that explicitly advertises the back-up tunnel
- D. rerouted traffic by the back-up tunnel in the event of link failure
Answer: D
NEW QUESTION 2
Only based on the Cisco IOS XR policy-map configuration exhibit,
which statement is correct?
- A. All DSCP AF41 marked packets will be dropped when the average queue length reaches 12,000 packets.
- B. DSCP AF11 marked packets will be randomly dropped when the average queue length reaches 10,000 packets.
- C. DSCP AF11 and AF41 marked packets are guaranteed a minimum bandwidth of 1 Mb/s.
- D. DSCP AF11 and AF41 marked packets are guaranteed a maximum bandwidth of 1 Mb/s.
Answer: B
NEW QUESTION 3
Refer to the exhibit.
Which two commands can be used to assign traffic onto MPLS TE Tunnel1001? (Choose two.)
- A. ip route 0.0.0.0 0.0.0.0 Tunnel1001
- B. tunnel mpls traffic-eng autoroute announce
- C. tunnel mpls traffic-eng bandwidth
- D. tunnel mpls traffic-eng priority 1 1
- E. ip route 0.0.0.0 0.0.0.0 10.0.0.1
Answer: AB
NEW QUESTION 4
Which two protocols facilitate label bindings by neighboring routers? (Choose two.)
- A. IS-IS
- B. LDP
- C. OSPF
- D. EIGRP
- E. BGP
Answer: BE
NEW QUESTION 5
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
NEW QUESTION 6
Scenario:
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
NEW QUESTION 7
Which statement describes the QoS behavior between P and PE routers of an MPLS provider network for an L3VPN service?
- A. The PE function honors DSCP markings set by the CE.
- B. The customer and provider must agree on DSCP classification and traffic priorities.
- C. Classification of customer traffic is handled by the P router.
- D. The PE function cannot map DSCP markings to MPLS EXP bits.
Answer: B
NEW QUESTION 8
Which method is used to mark traffic matched by class-map MY_CLASS as Expedited Forwarding?
- A. set ip dscp cs7
- B. set dscp cs7
- C. set dscp 46
- D. set dscp 45
Answer: C
NEW QUESTION 9
Which of the following three statements are correct regarding IPv6 QoS? (Choose three.)
- A. The traffic class field in the IPv6 header can be used to set specific precedence or DSCP values.
- B. A 20-bit flow label field enables per-flow processing.
- C. DS-TE is not supported by IPv6.
- D. Per-hop behavior in IPv6 networks is based on EXP bits.
- E. IPv6 QoS features are configured using the modular QoS CLI on Cisco routers.
Answer: ABE
Explanation:
http://www.cisco.com/en/US/technologies/tk648/tk872/technologies_white_paper0900aecd 8026004d.pdf
NEW QUESTION 10
How is bandwidth recalculated when utilizing the automatic bandwidth adjustment feature for MPLS TE?
- A. The tunnel’s output average is periodically sampled and then the bandwidth is adjusted to the largestsample obtained during the period, or to the configured maximum
- B. The tunnel’s output is sampled and then the bandwidth is adjusted by a configured percentage until theconfigured maximum value is reached
- C. Ping is used to measure congestion and the bandwidth is adjusted by a configured percentage until the maximum value is reached
- D. Ping is used to measure congestion and the bandwidth is adjusted to either the minimum, average, ormaximum configured bandwidth value
Answer: A
NEW QUESTION 11
Cisco MPLS TE tunnels recently have been deployed to minimize the utilization of a congested link in the core network. The tunnels are up and the administrative weight is correctly configured, but no improvement has occurred since they went into production. Which IOS command can be used to modify Cisco MPLS TE path selection on an interface?
- A. mpls traffic-eng administrative-weight 100
- B. Is-Is metric 100
- C. ip rsvp bandwidth percent 90
- D. tunnel mpls traffic-eng path-selection metric te
Answer: A
NEW QUESTION 12
An engineer looks at packet captures and sees that the MPLS header field of a packet indicates a bottom of stack field of 0. What can the engineer conclude from this information?
- A. The packet is an AToM packet
- B. One label is on the packet
- C. At least one more MPLS label is on the packet
- D. No labels are on the packet
Answer: C
NEW QUESTION 13
Refer to the exhibit. Based on the raw format of an MPLS header captured by a traffic analyzer, what is the value of the MPLS EXP field?
- A. 1
- B. 255
- C. 5
- D. 29
Answer: C
NEW QUESTION 14
The network architecture team is proposing to enable Cisco MPLS TE over the entire
service provider core network. Which two options are benefits of Cisco MPLS TE that affect their decision? (Choose two.)
- A. Cisco MPLS TE optimizes network resources.
- B. Cisco MPLS TE data flows independent from the underlying IGP.
- C. Cisco MPLS TE increases the data forwarding rate.
- D. Cisco MPLS TE tunneling does not require maintenance.
- E. Cisco MPLS TE offers network resource reservation, which removes any need for QoS MQC policies.
Answer: AB
NEW QUESTION 15
A recent analysis of a service provider network infrastructure revealed the necessity to reinforce bandwidth control over all the 5 Mbps residential customer contracts. Which option is a viable solution to rate limit customer’s bandwidth both upstream and downstream?
- A. class-based policing
- B. committed access rate on a per interface basis
- C. reserving 5 Mbps on Cisco MPLS TE tunnels that connect customers
- D. setting customer Ethernet links to 10 Mbps half-duplex
Answer: C
NEW QUESTION 16
Referring to the Cisco IOS XR configuration exhibit,
which labels will be advertised by the router with this configuration?
- A. Only the label for 10.1.1.1/32 will be advertised to all the LDP peers.
- B. Labels for all prefixes will be advertised to the 10.1.1.1 LDP peer.
- C. Labels for all prefixes will be advertised to all the LDP peers.
- D. No labels will be advertised to any LDP peers.
Answer: A
NEW QUESTION 17
In an IPv6 header, what does a flow label of zero indicate?
- A. The packet is not part of any flow.
- B. The size of the flow label is zero bytes.
- C. The label flow cannot have a value of zero.
- D. The packet belongs to the flow labeled zero.
Answer: A
NEW QUESTION 18
Which three mechanisms are used to implement MPLS TE? (Choose three.)
- A. tunnel interface
- B. CSPF
- C. RSVP
- D. LDP
- E. MP-BGP
Answer: ABC
Explanation:
Constrained-Based Shortest Path First (CSPF).
Resource Reservation Protocol - Traffic Engineering is an extension of the resource reservation protocol (RSVP) for traffic engineering.
NEW QUESTION 19
An engineer wants to extend the trust boundary to a Cisco IP Phone. Which protocol should be used?
- A. CDP
- B. CoS
- C. ToS
- D. 802.1Q
Answer: A
NEW QUESTION 20
Which option shows how a class map is implemented that matches only packets originating from the network 10.0.0.0/8, which are not marked as VoIP on Cisco IOS XE?
A)
B)
C)
D)
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: B
NEW QUESTION 21
How many labels does an MPLS packet have, with a bottom-of-stack label set to zero?
- A. The packet has no label.
- B. The packet has one label.
- C. The packet may have one or more labels.
- D. The packet has at least two labels.
Answer: D
NEW QUESTION 22
Which IOS XR Software feature supports establishing point-to-point and point-to-multipoint TE tunnels
traversing multiple IGP areas and levels allowing headend and tailend routers to reside in different areas?
- A. loose hop reoptimization
- B. FRR mode protection
- C. interarea support
- D. loose hop expansion
Answer: B
NEW QUESTION 23
At which layer does Cisco recommend the QoS trust boundary be set for an enterprise network environment?
- A. core layer, facing the distribution layer
- B. distribution layer, facing the access layer
- C. access layer, facing the end hosts
- D. distribution layer, facing the core layer
Answer: C
NEW QUESTION 24
On Cisco routers, which QoS marker is only locally significant?
- A. DSCP
- B. MPLS EXP
- C. IP precedence
- D. QoS group
- E. discard eligible (DE)
Answer: D
NEW QUESTION 25
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