JN0-663 Practice Exam Free – 50 Questions to Simulate the Real Exam
Are you getting ready for the JN0-663 certification? Take your preparation to the next level with our JN0-663 Practice Exam Free – a carefully designed set of 50 realistic exam-style questions to help you evaluate your knowledge and boost your confidence.
Using a JN0-663 practice exam free is one of the best ways to:
- Experience the format and difficulty of the real exam
- Identify your strengths and focus on weak areas
- Improve your test-taking speed and accuracy
Below, you will find 50 realistic JN0-663 practice exam free questions covering key exam topics. Each question reflects the structure and challenge of the actual exam.
Referring to the exhibit, a Layer 3 VPN is configured, however, the routes are being hidden. What is the problem?
A. The BGP peer is not reachable through the IGP.
B. An active MPLS tunnel does not exist between the peers.
C. A route distinguisher mismatch exists between the peers.
D. A VRF target community mismatch exists between the peers.
You are provisioning Layer 2 circuits between sites CE1, CE2, and CE3. Referring to the exhibit, which statement is true?
A. A point-to-multipoint LSP must be created between sites.
B. Each site must have only one VLAN configured to the PE.
C. Site PE1 must have a point-to-multipoint link configured towards the core.
D. Two VLANs must be configured from PE 1 to CE 1.
You have a mixed vendor EVPN environment and you need to ensure VXLAN interoperability between all devices. In tins scenario, winch statement is correct?
A. You should only use pure Type 2 routes.
B. You should only use pure Type 5 routes.
C. You should only use Type 2 and Type 5 routes.
D. You should only use Type 6 and Type 2 routes.
You are creating a new LDP signaled Layer 2 circuit between three customer sites. In this scenario, which two statements are correct? (Choose two.)
A. BGP is used to exchange the virtual circuit labels with other PEs.
B. You are allowed to tunnel your LDP sessions through RSVP LSPs.
C. You are not allowed to use any RSVP-signaled LSPs in your core network.
D. LDP is used to exchange the virtual circuit labels with other PEs.
R2 has IS-IS adjacencies with R3 and R4. You want to ensure that R2 has both a level 1 and level 2 adjacency to both R3 and R4, but R2 only has one adjacency with R4. Referring to the exhibit, which configuration change will solve this issue?
A. Change the IS-IS area on R4 to match R2.
B. Remove the level 1 disable configuration from R4.
C. Remove the level 1 disable configuration from R2.
D. Change the IS-IS area on R2 to match R4.
Referring to the exhibit, you want to make ISP1 your preferred connection for inbound and outbound traffic. Which two steps will accomplish this task? (Choose two.)
A. Create an export policy setting local-preference 200 and next-hop self and apply it to the IBGP peers on R2.
B. Create an export policy to prepend the ASN on advertised routes and apply it to the EBGP peer on R1.
C. Create an export policy to prepend the ASN on advertised routes and apply it to the EBGP peer on R2.
D. Create an export policy setting local-preference 200 and next-hop self and apply it to the IBGP peers on R1.
You must deploy an interprovider VPN option that ensures that the ASBRs do not need to store any VPN routes. In this scenario, which interprovider VPN option should you choose?
A. option A
B. option B
C. option D
D. option C
Which two types of LSAs have an area scope? (Choose two.)
A. Type 2
B. Type 5
C. Type 11
D. Type 7
Referring to the exhibit, hosts in Site 1 and Site 2 are unable to communicate with each other through the Layer 3 VPN. What is the problem?
A. The two sites are in the same AS.
B. The two sites are using the same instance type.
C. The two sites are using the same route target.
D. The two sites are using the same route distinguisher.
R2 is receiving a route from R1 and you must ensure that the route is not advertised to R3. Referring to the exhibit, which two configuration changes on R2 will solve the issue? (Choose two.)
A. Apply the no-export policy as an import policy under group 65001.
B. Apply the no-advertise policy as an export policy under group 65003.
C. Apply the no-export policy as an export policy under group 65003.
D. Apply the no-advertise policy as an import policy under group 65001.
Which two statements about IS-IS are correct? (Choose two.)
A. Level 1 intermediate systems exchange routing information with Level 1 intermediate systems on other IS-IS areas.
B. An IS-IS router sets the attached bit in the PDUs it sends to a Level 1 area to indicate that it is a backbone router.
C. A Level 1 router can only form adjacencies with other Level 1 routers.
D. Level 2 routers can form adjacencies with either Level 1 or Level 2 routers.
You recently deployed CoS-based forwarding in your network, which uses OSPF as its IGP. You notice that the forwarding of traffic has not changed and is not following the path indicated within your configuration. In this scenario, which statement explains this behavior?
A. The defined policy references IP addresses as the next-hops instead of interface names.
B. Load balancing has not been enabled under [edit forwarding-options].
C. The defined policy references interface names as the next-hops instead of IP addresses.
D. The defined policy has not been applied under [edit class-of-service forwarding-policy].
Your network is connected to two different ISPs and you notice that they are using your network for transit traffic. In this scenario, which two configuration statements will solve this problem? (Choose two.)
A. set policy-options policy-statement ISP term REST then reject
B. set policy-options policy-statement ISP term ROUTES then reject
C. set policy-options as-path LOCAL-ROUTES ג€()ג€
D. set policy-options as-path LOCAL-ROUTES ג€(65310|65441)+ג€
Which two statements about wide and narrow metrics used in IS-IS are correct? (Choose two.)
A. Wide metrics are enabled with the wide-metrics-only parameter under protocols isis hierarchy.
B. Narrow metrics are enabled by default and use 8 bits in TLVs to send information.
C. Wide metrics are sent by default and use 24 bits in TLVs to send information.
D. Disabling narrow metrics results in external routes being leaked from L1 to L2 areas automatically.
Referring to the exhibit, which two statements are true? (Choose two.)
A. This router is an ASBR.
B. There are two interfaces marked as passive.
C. There is one interface marked as passive.
D. This router is an ABR.
You are using EVPN to provide Layer 2 stretched VLANs between two sites. You notice that the MAC addresses in either site are not showing up on the remote site. Referring to the exhibit, what are two ways to solve this problem? (Choose two.)
A. On R1, issue the set switch-options vrf-target target:65101:22030 command.
B. On R2, issue the delete protocols evpn vni-options vni 22030 command.
C. On R2, issue the set switch-options vrf-target target:65101:22030 command.
D. On R1, issue the set protocols evpn vni-options vni 22030 vrf-target target :65101:22030 command.
You are troubleshooting BGP routing issues between two MX Series routers. The BGP session is established but no BGP routes are being communicated. What are two reasons for this problem? (Choose two.)
A. The peer type should be external.
B. No active BGP routes are in the inet.0 table.
C. The peers are in different ASs.
D. No export routing policy is applied.
Referring to the exhibit, there is a Layer 3 VPN setup that connects sites CE-A-1, CE-A-2, and CE-A-3 together. Host-1 can communicate with Host-3, but Host-1 cannot communicate with Host-2. What must you do to solve the problem?
A. Change the route distinguisher in both routing instances to the same value.
B. Use the next-table configuration statement for static routes in the corresponding routing instances.
C. Use BGP instead of static routing between the CE and PE devices.
D. Use the auto-export command in both routing instances.
Referring to the exhibit, you are asked to summarize all routes in the 10.10.0.0/22 address range ensuring that a single summary route is present in area 49.0002 while the IS-IS internal contributing routes are restricted to area 49.0001. All other routes must not be affected. Which two operations would have to be performed on R2 to accomplish this task? (Choose two.)
A. Create and apply a policy with a single term to accept only the summary route.
B. Include the to level 2 match criteria when referencing the summary route.
C. Include the from level 1 match criteria when referencing the summary route.
D. Create and apply a policy with two terms; one to accept the summary route and one to reject the contributing routes.
Referring to the ABR configuration shown in the exhibit, which three statements are correct? (Choose three.)
A. The ABR advertises a default route to the NSSA using a Type 7 LSA.
B. The ABR advertises a single Type 3 summary LSA to the backbone area for all Type 1 and Type 2 LSAs in the 192.168.16.0/20 range.
C. The ABR advertises a Type 5 external LSA to the backbone area for each Type 7 LSA in the NSSA.
D. The ABR does not summarize any routes within the 192.168.16.0/20 range.
E. The ABR advertises a single Type 5 external LSA to the backbone area for all Type 7 LSAs in the NSSA.
Referring to the exhibit, you have recently established a Layer 3 VPN between PE-1 and PE-2, connecting the two CE sites. Routing information is being shared between sites and the customer has two-way communication. After adding this VPN to your core network, PE-1 and PE-2 are no longer able to forward traffic to the Internet. In this scenario, what is the problem?
A. You must configure the inet-vpn NLRI for the BGP sessions on both your PE devices.
B. You must configure a multihop external BGP session between your PE devices and the Internet provider’s ISP-A device
C. You must configure the inet unicast NLRI for the BGP session on both your PE devices.
D. You must configure a separate internal BGP group on both your PE devices specifically for Internet connectivity.
You have the LDP signaled VPLS topology as shown in the exhibit. CE-B at Site-2 is multihomed to both PE-2 and PE-3. In this scenario, where would you configure loop prevention?
A. PE-1
B. CE-B
C. PE-3
D. PE-2
You are troubleshooting a problem with a BGP peer where BGP routes are not being accepted from that peer. Referring to the exhibit, which two statements are correct? (Choose two.)
A. Term 0 is missing a terminating action that allows BGP routes to be accepted.
B. Term 0 is missing a route-filter that specifies the allowed routes.
C. The reject at the end of the policy is preventing the routes from being accepted.
D. You cannot have terminating actions outside of terms.
You are considering different MPLS VPN connectivity options for a new customer deployment. Your customer requires shared LSPs, Layer 2 connectivity, and auto-provisioning. Which type of VPN satisfies the requirements?
A. BGP Layer 3 VPNs
B. circuit cross-connects
C. LDP Layer 2 circuits
D. BGP Layer 2 VPNs
Which statement is correct about BGP FlowSpec between a service provider's PE router and a customer?
A. The flow routes received from a customer are limited to /32 masks for IPv4.
B. The NLRI received from a customer is stored in the flowspec.inet.0 table.
C. The RFC deterministic traffic filtering algorithm is used by default in Junos.
D. The NLRI received from a customer is stored in the inetflow.0 table.
You have a Layer 3 VPN established between PE-1 and PE-2 to allow communication between CE-1 and CE-2. Referring to the exhibit, which statement is correct?
A. You will need an OSPF import policy on PE-1 to receive the BGP routes, learned from PE-2, through the Layer 3 VPN.
B. You will need a BGP export policy on PE-1 to redistribute the routes, learned from CE-1, through the Layer 3 VPN.
C. You will need a VRF import policy on PE-1 to advertise the BGP routes, learned from CE-1, through the Layer 3 VPN.
D. You will need an OSPF export policy on PE-2 to redistribute the BGP routes, learned from PE-1, through the Layer 3 VPN.
R2 is receiving a route from an EBGP neighbor and is advertising the route to R4. Referring to the exhibit, which configuration on R2 will solve the issue with the route on R4?
A. Move the no-advertise export policy from group 65002 to a global BGP policy.
B. Move the nhs policy from a global BGP export policy to an export policy under group 65002.
C. Move the no-export policy from a global BGP import policy to an import policy under group 65001.
D. Move the no-advertise export policy from group 65001 to a global BGP policy.
R4 is directly connected to both RPs (R2 and R3). R4 is currently sending all joins upstream to R3 but you want to load balance the joins between both RPs. Referring to the exhibit, which configuration change will solve this issue?
A. Configure the join-load-balance parameter under PIM on R4.
B. Configure the default route in inet.2 on R4 from R3 as the next hop to both R3 and R2.
C. Configure the group-range parameter to be the same on R2 and R3.
D. Configure the bootstrap priority on R2 to be the same as R3.
Referring to the exhibit, which two statements are true? (Choose two.)
A. The CE-1 and CE-2 routes will have the same route distinguisher, which will stop the BGP routes from being shared.
B. An AS loop will not exist between CE-1 and CE-2 and the BGP routes will be shared.
C. An AS loop will exist between CE-1 and CE-2 and the BGP routes will not be shared.
D. The CE-1 and CE-2 routes will have the same route distinguisher, which will not stop the BGP routes from being shared.
Referring to the exhibit, you need to implement VPLS between CE-A1 and CE-A2. You must ensure that no loops are created due to the multihoming of the connection from CE-A2 to PE2 and PE3. Based on the type of VPLS, which two solutions will satisfy this requirement? (Choose two.)
A. In an LDP VPLS, configure a primary and backup neighbor.
B. In an LDP VPLS, configure multihoming and local preference on PE-2 and PE-3.
C. In a BGP VPLS, configure multihoming and local preference on PE-2 and PE-3.
D. In a BGP VPLS, configure a primary and backup neighbor.
Referring to the exhibit, which statement is true?
A. This is a multipath route.
B. The route is learned from three different neighbors.
C. This is a multihop route.
D. The route is learned from only one neighbor.
R2 is receiving the same route from R1 and R3. You must ensure that you can load balance traffic for that route. Referring to the exhibit, which two configuration changes will allow load balancing? (Choose two.)
A. Apply the prepend policy as an import policy under group R1.
B. Configure multipath under the global BGP configuration.
C. Configure multipath under group R1.
D. Apply the prepend policy as an import policy under group R3.
Referring to the exhibit, which three statements about route 10.222/16 are correct when using the default BGP advertisement rules? (Choose three)
A. R1 will prepend AS10 when advertising 10.222/16 to R2.
B. R2 will prepend AS10 when advertising 10.222/16 to R7.
C. R2 will advertise 10.222/16 to R4 with itself as the next hop.
D. R1 will advertise 10.222/16 to R2 with itself as the next hop.
E. R7 will advertise 10.222/16 to R9 with itself as the next hop.
Which three statements are true about the show pim join output shown in the exhibit? (Choose three.)
A. This is a source-specific multicast stream.
B. The multicast receiver is still using the RP to receive the stream.
C. The multicast stream has been configured with a backup path to allow for fast reroute.
D. The multicast stream does not have an RP.
E. The shortest path to the source is through the RP.
A network designer wants to ensure that traffic from R2 destined for 2001:db9:ffff:ff00::/62 always traverses the R2-R1 link if that link is available. Referring to the exhibit, which configuration change will satisfy this requirement? A.
B.
C.
You are creating an LDP-signaled Layer 2 circuit between two sites. Site1 and Site2 use different VLAN IDs to connect to your PE devices. In this scenario, which encapsulation type must be used on the logical interfaces?
A. vlan-ccc
B. vlan-vpls
C. vlan-bridge
D. vlan-tcc
What are two reasons an IBGP learned route would be hidden? (Choose two.)
A. The route is suppressed by damping.
B. The route has a next hop of the local routing device.
C. The route is rejected by an export policy.
D. The route has an empty AS path.
You are troubleshooting an issue where R1 is no longer receiving the default IS-IS route from R3. Referring to the exhibit, which action would you take to solve the problem?
A. Delete the protocols isis ignore-attached-bit configuration statement on R1.
B. Delete the protocols isis level 2 disable configuration statement on R3.
C. Delete the protocols isis import configuration statement on R1.
D. Delete the protocols isis ignore-attached-bit configuration statement on R3.
Referring to the exhibit, traffic sent from CE-A2 to PE3 does not loop back to CE-A2 through PE2. Winch two EVPN functions accomplish this task? (Choose two.)
A. multicast ingress replication
B. aliasing
C. split horizon
D. designated forwarder election
You want to allow the load balancing of traffic for an EBGP route from two different peers in the same AS. Which three actions are needed to accomplish this task? (Choose three.)
A. A policy to load-balance traffic should be applied to the forwarding table.
B. The multipath parameter should be configured under protocols BGP.
C. At least two interfaces should be connected to the same EBGP neighbor.
D. An equal cost AS path for the route is required.
E. The multihop parameter should be configured under protocols BGP.
What is the purpose of the cluster-list attribute within a BGP route reflector group?
A. to disable internal cluster re-advertisements
B. to facilitate loop detection within the route reflector network
C. to define the router that first advertised the route to the route reflector
D. to override the router ID value within the cluster
You have the Layer 2 VPN configuration shown in the exhibit. You are asked to determine the remote site ID for ge-1/0/1.512. In this scenario, what is the remote site ID?
A. 4
B. 5
C. 1
D. 3
Referring to the exhibit, what will the IS-IS cost be for R3 to reach R1?
A. 301
B. 73
C. 20
D. 310
You are receiving the same 200.0.0.0/24 BGP route from four different ISPs. Referring to the exhibit, which ISP's route would be selected as active?
A. ISP-B
B. ISP-A
C. ISP-C
D. ISP-D
R1 assigns incoming voice traffic to the ef forwarding class. All other traffic is assigned to the best-effort forwarding class. You have configured a CoS re-write rule on R1 to include the correct CoS bit values in packets sent towards R2. You want R2 to classify traffic using the CoS markings created by R1. Which two configuration steps are necessary to accomplish this task? (Choose two.)
A. Assign the behavior aggregate classifier to the ge-0/0/1.0 interface on R2.
B. Assign the CoS re-write rule to the ge-0/0/1.0 interface on R2.
C. Configure a CoS re-write rule on R2 and assign matching CoS values.
D. Configure a behavior aggregate classifier on R2.
All adjacencies have been formed, no extra options have been configured, and no policies have been written. Referring to the exhibit, which two statements are correct? (Choose two.)
A. R2 will create a default route and send it as a TLV to R1
B. R1 cannot reach R5
C. R1 can reach R5
D. R1 will create its own default route that points to R2
You are responsible for configuring CoS for your network Your network includes a video application with strict latency requirements, so that any packets delayed by more than 75 ms are effectively useless. You want to ensure that you do not waste buffer space. When configuring the scheduler for this application, which feature would you use?
A. remainder
B. exact
C. temporal
D. rate limit
A network administrator is migrating from IPv4 to IPv6 and one of the IS-IS adjacencies is not coming up between R1 and R2. Which action will solve the problem?
A. Remove topologies ipv6-unicast from protocols isis on R2.
B. Configure topologies ipv4-unicast from protocols isis on R2.
C. Remove topologies ipv6-unicast from protocols isis on R1.
D. Configure an IPv4 address on interface ge-0/0/1 on R1.
You are providing carrier-of-carrier VPN services for AS 100 and AS 200. You want to distribute MPLS labels between your PE routers and the AS 100 and AS 200 CE routers. What must be enabled to accomplish this task?
A. Use BGP with the inet-vpn address family enabled.
B. Use BGP with the labeled-unicast address family enabled.
C. Use RSVP with the lsp-set parameter enabled.
D. Use RSVP with the tunnel-services parameter enabled.
Referring to the exhibit, which three statements are correct? (Choose three.)
A. The ESI is 00:22:22:22:22:22:22:22:22:22.
B. This route contains the MAC address of an end host.
C. The router with the IP address 10.101.100.3 is the originator of this route.
D. This ESI Auto-Discovery route is used for designated forwarder election.
E. This route is an EVPN Type-1 route.
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