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QUESTION 31
Click the Exhibit button.
The exhibit contains a BGP topology. R1 and R2 are peering using IBGP. R2 and R3 are peering with EBGP. R1 is not installing any routes from R3 due to next-hop resolution issues. Which two configurations will resolve this issue? (Choose two.)
A. Use a policy to advertise the loopback on R2 into the IGP.
B. Advertise the R2-R3 subnet into the IGP.
C. Configure advertise-inactive on the IBGP peering session on R2.
D. Configure next-hop self on the IBGP peering session on R2.
Correct Answer: BD QUESTION 32
Click the Exhibit button.
Based on the output shown in the exhibit, which statement is correct?
A. R3 is the designated intermediate system.
B. R3 is the backup designated intermediate system.
C. R3 has been configured with an export policy and is announcing external routes to IS-IS neighbors.
D. R3 is using both IPv4 and IPv6 resulting in two pseudonodes.
Correct Answer: A QUESTION 33
Click the Exhibit button.
CE1, CE2, and CE3 are part of a single VPLS VPN. R1, R2, and R3 are PEs in the provider network, and have just been powered on. The VPLS domain has converged, and frames have passed between all CEs in the last minute. An Ethernet frame has just arrived at R3 from CE3. It has a source MAC address of CE3 and a destination MAC address of CE1.What does R3 do with the Ethernet frame?
A. Drops the packet as the destination MAC address is not for R3.
B. Drops the packet as the destination MAC address is not in R3’s MAC table.
C. Forwards the packet to R1 only.
D. Forwards the packet to R1 and R2.
Correct Answer: C
QUESTION 34
Click the Exhibit button.
What would happen if the guaranteed-rate command is removed from the configuration shown in the exhibit?
A. The logical interface gets a minimal bandwidth reservation.
B. The minimum-rate command should be configured instead.
C. The logical interface receives no bandwidth constraints.
D. The transmit-rate command should be configured instead.
Correct Answer: A QUESTION 35
Which statement is true about ASM and/ or SSM multicast?
A. ASM requires an external mechanism to find the source.
B. SSM only builds RPT trees, since the RP is replaced by an external mechanism.
C. ASM and SSM for IPv6 multicast use embedded RP.
D. SSM does not require MSDP.
Correct Answer: D QUESTION 36
Click the Exhibit button.
Traffic is flowing through the interfaces in the exhibit as follows:
On ge-0/0/2.0, IPv4 traffic has a throughput rate of 4 Mbps, and the burst size counter is at 200 KB. On ge-0/0/2.0, IPv6 traffic has a throughput rate of 7 Mbps, and the burst size counter is at 550 KB. On ge-0/0/3.0, IPv4 traffic has a throughput rate of 5 Mbps, and the burst size counter is at 250 KB. On ge-0/0/3.1, IPv6 traffic has a throughput rate of 12 Mbps, and the burst size counter is at 450 KB.
Which statement describes what is happening?
A. IPv6 traffic on ge-0/0.3.1 is being dropped; all other traffic is unaffected.
B. IPv4 traffic on ge-0/0/2.0 is unaffected; IPv6 traffic on ge-0/0/2.0 is being dropped; IPv4 traffic on ge-0/0/3.0 is unaffected; IPv6 traffic on ge-0/0/3.1 is being dropped.
C. IPv4 traffic on ge-0/0/2.0 is being dropped; IPv6 traffic on ge-0/0/2.0 is being dropped; IPv4 traffic on ge-0/0/3.0 is unaffected; IPv6 traffic on ge-0/0/3.1 is unaffected.
D. All IPv4 and IPv6 traffic on ge-0/0/2 and ge-0/0/3 is being dropped.
Correct Answer: B
QUESTION 37
Click the Exhibit button.
The output in the exhibit was captured on an interface. Which three statements are true about the configuration on the router with hostname SaoPaulo? (Choose three.)
A. Wide metrics is not in use.
B. The router has the overload bit set to “on”.
C. Authentication is enabled.
D. System ID is 1921.6805.2001.
E. Level 2 routing is enabled.
Correct Answer: ACE
QUESTION 38
Click the Exhibit button.
R2 and R4 advertise a default route into Area 1.Based on the configurations in the exhibit, which statement is true? (Choose two.)
A. Traffic from R1 to internal OSPF destinations in Area 0 will always transit R4.
B. Traffic from R1 to internal OSPF destinations in Area 0 will always transit R2.
C. Traffic from R1 to external OSPF destinations in Area 0 will always transit R2.
D. Traffic from R1 to external OSPF destinations in Area 0 will always transit R4.
Correct Answer: AC QUESTION 39
Click the Exhibit button.
Referring to the exhibit, you want to save CPU processing load on the PE3 router by preventing the reception of routes belonging to Customer B. Which Layer 3 VPN scaling mechanism provides this functionality?
A. route origin
B. route refresh
C. route reflection
D. route target filtering
Correct Answer: D QUESTION 40
Router R5 has the overload parameter configured. Which statement is true?
A. R5 will purge its LSAs from the network until the overload condition is cleared.
B. R5 will increase its link metrics to 65535 and will stop forwarding transit traffic to OSPF destinations.
C. R5 will increase its link metrics to 65535 and will continue to forward transit traffic to OSPF destinations.
D. R5 will send an overload LSA to its neighbors to indicate it is in the overload state.
Correct Answer: C QUESTION 41
What is a limitation of LDP?
A. Traffic must follow explicitly configured paths.
B. It requires a full mesh of LSPs throughout the network.
C. It requires a traffic engineering database (TED).
D. It does not support traffic engineering.
Correct Answer: D QUESTION 42
Click the Exhibit button.
You work for ISP A. Customers of both ISP B and ISP C must be able to reach all of your customers, but your network must not allow transit traffic between ISP B and ISP C. Referring to the exhibit, which two methods could you use? (Choose two.)
A. Use local preference to prefer the proper routes.
B. Use the well-known no-transit community.
C. Use policy to filter routes on AS number.
D. Use communities to identify and filter routes.
Correct Answer: CD QUESTION 43
Click the Exhibit button.
In the exhibit, Area 1 and Area 2 are configured as not-so-stubby areas. RIP network 192.168.100.0/24 is redistributed into OSPF in Area 1.Which three statements are true? (Choose three.)
A. Network 192.168.100.0/24 is advertised in a Type 7 LSA in Area 1.
B. Network 192.168.100.0/24 is advertised in a Type 7 LSA in Area 0.
C. Network 192.168.100.0/24 is advertised in a Type 5 LSA in Area 0.
D. The area border router between Area 0 and Area 2 converts network 192.168.100.0/24 to a Type 7 LSA.
E. Area 2 does not see the network 192.168.100.0/24 in its link-state database.
Correct Answer: ACE QUESTION 44
Click the Exhibit button.
Referring to the exhibit, your network management systems have alerted you to a loss of connectivity to the CE2 router in your Layer 3 VPN. The loopback address of the CE router is 10.10.1.1/32.Which operational command on PE2 verifies connectivity across the PE-CE link?
A. ping 10.10.1.1
B. ping 10.10.1.1 table customer-a
C. ping 10.10.1.1 instance customer-a
D. ping 10.10.1.1 routing-instance customer-a
Correct Answer: D QUESTION 45
Click the Exhibit button.
You are configuring a new PE router in your Layer 3 VPN. A remote PE router is using the configuration shown in the exhibit. Which configuration is needed to receive customer-vpn routes from the remote PE?
A. Option A
B. Option B
C. Option C
D. Option D
Correct Answer: C
QUESTION 46
Click the Exhibit button.
Based on the output in the exhibit, which statement is correct?
A. R4 has been configured with an IS-IS export policy and is announcing external routing information.
B. R3 and R4 have an adjacency at both level 1 and level 2.
C. R3 has been configured so that it is not used for transit traffic.
D. R3 and R4 are both attached to other IS-IS areas.
Correct Answer: C QUESTION 47
Which two statements describe advantages of using BGP for VPLS signaling instead of LDP signaling? (Choose two.)
A. There is no need for MPLS signaling protocol.
B. There is a well-defined scaling hierarchy.
C. There is a separation of signaling from other services.
D. There is auto discovery.
Correct Answer: BD QUESTION 48
Click the Exhibit button.
A LDP Layer 2 circuit is shown for VPN A and VPN B. LDP tunneling over RSVP is activated on P1 and P2. Referring to the exhibit, which statement is true about the LDP Layer 2 circuit?
A. MAC learning is needed and using the inner VPN label between PE1 and PE2 for VPN A or VPN B.
B. Targeted LDP sessions are established between PE1, P1 and P2, PE2.
C. Label stitching must be configured on P1 and P2 for end to end transport LSPs.
D. LDP must be enabled on the loopback interfaces of PE1 and PE2.
Correct Answer: D QUESTION 49
Click the Exhibit button.
Customer A is complaining that CE1 and CE2 cannot form an OSPF adjacency across your LDP Layer 2 circuit. The physical topology of the network is CE1-PE1-P-PE2-CE2. PE1’s loopback is 192.168.5.1, P’s loopback is 192.168.6.1, and PE2’s loopback is 192.168.7.1. Referring to the output in the exhibit, what is the problem?
A. mismatched virtual circuit ID values
B. mismatched interface encapsulations
C. incorrect PE-CE interface configuration
D. extended LDP neighbor not established
Correct Answer: B QUESTION 50
Click the Exhibit button.
Referring to the exhibit, which type of traffic protection mechanism is used for the LSP?
A. link-protection
B. fast-reroute
C. node-link-protection
D. bypass
Correct Answer: B QUESTION 51
Click the Exhibit button.
You work for ISP A, as shown in the exhibit, and must configure R1 to use load balancing across both available links to ISP B’s network. Which command do you use to finish the configuration?
A. set protocols bgp group isp-b multipath
B. set routing-options forwarding-table export per-packet
C. set protocols bgp group isp-b multihop
D. set routing-options forwarding-table load-balance
Correct Answer: A QUESTION 52
Click the Exhibit button.
The exhibit shows the output of a Junos show bgp neighbor command. Which two statements are true? (Choose two.)
A. IPv4 routes will be exchanged over this session.
B. IPv6 routes will be exchanged over this session.
C. The local router initiated the BGP session.
D. BFD keepalive is configured to 30 seconds.
Correct Answer: AC QUESTION 53
Click the Exhibit button.
Referring to the OSPF link metrics in the exhibit, which path will traffic from R6 take to reach R1?
A. R6, R3, R2, R4, R1
B. R6, R3, R2, R1
C. R6, R5, R4, R1
D. R6, R5, R3, R2, R4, R1
Correct Answer: B QUESTION 54
Click the Exhibit button.
A customer is using the Layer 3 VPN multicast technology shown in the exhibit. Which statement is true?
A. PE6 sends a BGP NG-MVPN NLRI Type 5 message upon receiving a *,G join on its VRF interface.
B. PE6 sends a BGP NG-MVPN NLRI Type 7 message upon receiving an S,G join on its VRF interface.
C. The P2MP sub LSP reduces the traffic load on the interface between PE2 and PE5.
D. PE6 signals PE2 through MBGP to include the I-PMSI tree on its P2MP sub LSP.
Correct Answer: B QUESTION 55
Click the Exhibit button.
In the exhibit, R1 is a route reflector and R2 through R5 are clients in a full mesh configuration. R2 should only receive one copy of all routes sent from R5.Which configuration is valid?
A. Option A
B. Option B
C. Option C
D. Option D
Correct Answer: C QUESTION 56
In an interdomain multicast deployment scenario, an RP1 is in AS1 and an RP2 is in AS2. MSDP is configured between RP1 and RP2.In which routing table on RP1 are source-active messages (SAs) received from RP2 by default?
A. inet.0
B. inet.2
C. inet.1
D. inet.4
Correct Answer: D QUESTION 57
Click the Exhibit button.
R3 and R4 want to establish an EBGP session between each other’s loopback addresses. They have each configured static routes to the other’s loopback address and can ping from loopback to loopback. Their EBGP session is configured with correct neighbor and local addresses. The correct AS numbers have been specified at the [routing-options] hierarchy as well. Considering the topology in the exhibit, which statement is true?
A. BGP’s protocol preference must be adjusted to be lower than protocol static for the session to establish.
B. Each side must configure multipath for the session to establish.
C. Each peer must specify a local-as within their EBGP configuration for the session to establish.
D. Each peer must configure multihop for the session to establish.
Correct Answer: D
QUESTION 58
Click the Exhibit button.
R2 is announcing the 10.200/16 network to its IS-IS neighbors. No routing policies have been applied to R3. Referring to the exhibit, will R5 have 10.200/16 as an IS-IS route?
A. Yes; IS-IS level 2 externals are passed from level 2 to level 1 by default.
B. No; IS-IS level 2 externals are only passed to level 1 if wide-metrics-only is configured on all routers.
C. Yes; all level 2 routing information is shared throughout an IS-IS domain by default.
D. No; IS-IS does not announce routes from level 2 to level 1 unless a routing policy is applied.
Correct Answer: D
QUESTION 59
You are facing BGP scaling issues and decide to add dedicated route reflectors to your network. You notice that VPN routes are not being advertised by your route reflectors. Which three actions can you take to solve this? (Choose three.)
A. Add a static default route to inet.3 and/or inet6.3 on the route reflectors.
B. Add a full mesh of MPLS LSPs between all of the route reflectors.
C. Add MPLS LSPs between the route reflectors and their client routers.
D. Add a static default route to inet.3 and/or inet6.3 on all of the client routers.
E. Use rib-groups to add IGP routes to inet.3 and/or inet6.3 on the route reflectors.
Correct Answer: ACE
QUESTION 60
What is the purpose of the no-cspf command?
A. to successfully signal the LSP across the network regardless of constraints
B. to delete the CSPF database
C. to ignore OSPF when calculating the ERO
D. to successfully signal the LSP only if the default IGP path (or named path) meets all constraints
Correct Answer: A
QUESTION 61
An OSPF network has been designed with multiple areas to improve scalability. Which two statements are true? (Choose two.)
A. Each router in the OSPF network runs the shortest-path-first algorithm to determine paths through the network.
B. The Area Border Router for each area runs the shortest-path-first algorithm and floods its results through the area.
C. Each area must have at least one link connecting it to each of the other areas of the OSPF network.
D. OSPF provides loop-free routing within an OSPF routing domain, but does not guarantee symmetrical routing.
Correct Answer: AD
QUESTION 62
Click the Exhibit button.
Customer A is complaining that routes advertised from the CE2 router are not being received on the CE1 router. The physical topology of the network is CE1-PE1-PE2-CE2. The CE1-PE1 subnet is 172.16.1.0/24. The CE2-PE2 subnet is 172.16.2.0/24. PE1’s loopback is 192.168.3.1 and PE2’s loopback is 192.168.4.1.Referring to the output in the exhibit, what is the problem?
A. No LSP exists between PE1 and PE2.
B. Route targets are not properly configured.
C. as-override is not configured in the VRFs.
D. family inet-vpn is not configured on the PEs.
Correct Answer: A
QUESTION 63
Click the Exhibit button.
In the exhibit, what happens if the source starts sending multicast traffic toward R1 and there are receivers registered at the RP?
A. R1 encapsulates the multicast packets into a PIM register multicast packet.
B. R1 encapsulates the multicast packets into PIM join unicast messages.
C. R1 forwards the multicast packets on the S,G tree towards the RP.
D. R1 tunnels the multicast packets in PIM register messages toward the RP.
Correct Answer: D QUESTION 64
Click the Exhibit button.
You have an MPLS network and you have configured most-fill as a CSPF tiebreaker. Using the information in the exhibit, which path will be used to signal a new LSP requiring 12 Mbps?
A. Path 1
B. Path 2
C. Path 3
D. Path 4
Correct Answer: D QUESTION 65
Which two configuration parameters are required to configure a BGP-signaled VPLS service? (Choose two.)
A. vpls-id
B. site-identifier
C. route-distinguisher
D. site-address
Correct Answer: BC QUESTION 66
Click the Exhibit button.
Referring to the exhibit, which statement is correct?
A. Only multicasts packets (224.0.1.39) are allowed on the input and output direction.
B. Auto-RP discovery messages are filtered in the input and output direction.
C. Rendezvous point announcements are filtered in the output direction.
D. This filter does not work because the input or output parameter is missing.
Correct Answer: C QUESTION 67
Click the Exhibit button.
The IGP is IS-IS. Routes from R1 need to be present on R6. Referring to the exhibit, what will accomplish this task?
A. Create an L1 adjacency between R2 and R3 to allow the routes to pass through to R6.
B. Use policy on R3 to leak R1’s routes from L2 to L1.
C. Change the area address from 49.0003 to 49.0001 on R6 to allow R6 to accept routes from R1.
D. Use policy on R2 to leak R1’s routes from L1 to L2.
Correct Answer: B QUESTION 68
Click the Exhibit button.
Referring to the exhibit, PE2 requires the loopback of PE1 to appear in the inet.3 routing table as a labeled route. Which configuration parameter is specifically required to support this?
A. resolve-vpn
B. family inet-vpn
C. traffic-engineering bgp-igp
D. traffic-engineering mpls-forwarding
Correct Answer: A
QUESTION 69
What are three Junos automation scripts? (Choose three.)
A. op scripts
B. pulse scripts
C. commit scripts
D. event scripts
E. action scripts
Correct Answer: ACD
QUESTION 70
Click the Exhibit button.
Your IT manager asks you to describe a benefit of migrating from LDP VPLS towards BGP VPLS considering the operational network shown in the exhibit. What can you tell your manager?
A. Using BGP signaling improves scaling, because a full mesh of transport LSPs is not needed.
B. MAC addresses are learned through BGP instead of LDP, which improves scaling.
C. Ingress PE replication can be reduced, because BGP VPLS supports P2MP LSPs.
D. Configuration overhead is reduced when adding new sites or new VPNs.
Correct Answer: D QUESTION 71
Click the Exhibit button.
In the exhibit, your Layer 3 VPN uses BGP to send and receive routes from customers. Customer A reports that remote routes are not being received on CE2.Which configuration parameter is missing from your PE router configuration?
A. vrf-import
B. vrf-export
C. as-override
D. advertise-peer-as
Correct Answer: C QUESTION 72
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