Juniper JN0-664 JNCIP-SP Exam Practice Test Instant Access

Question 1

Exhibit

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 configuration change will allow load balancing?

AConfigure the multipath parameter under the global BGP configuration.

BApply the prepend policy as an import policy under group R1.

CConfigure the multipath multiple-as parameter under the global BGP configuration.

DApply the prepend policy as an import policy under group R3.

Answer : C

Question 2

Exhibit

The network shown in the exhibit is based on IS-IS

Which statement is correct in this scenario?

AThe NSEL byte for Area 0001 is 00.

BThe area address is two bytes.

CThe routers are using unnumbered interfaces

DThe system IDofR1_2 is 192.168.16.1

Answer : A

IS-IS is an interior gateway protocol that uses link-state routing to exchange routing information among routers within a single autonomous system. IS-IS uses two types of addresses to identify routers and areas: system ID and area address. The system ID is a unique identifier for each router in an IS-IS domain. The system ID is 6 octets long and can be derived from the MAC address or manually configured. The area address is a variable-length identifier for each area in an IS-IS domain. The area address can be 1 to 13 octets long and is composed of high-order octets of the address. An IS-IS instance may be assigned multiple area addresses, which are considered synonymous.Multiple synonymous area addresses are useful when merging or splitting areas in the domain1. In this question, we have a network based on IS-IS with four routers (R1_1, R1_2, R2_1, and R2_2) belonging to area 0001. The area address for area 0001 is 49.0001. The NSEL byte for area 0001 is the last octet of the address, which is 01.The NSEL byte stands for Network Service Access Point Selector (NSAP Selector) and indicates the type of service requested from the network layer2. Therefore, the correct statement in this scenario is that the NSEL byte for area 0001 is 01.

Question 3

When building an interprovider VPN, you notice on the PE router that you have hidden routes which are received from your BGP peer with family inet labeled-unica3t configured.

Which parameter must you configure to solve this problem?

AUnder the family inet labeled-unicast hierarchy, add the explicit null parameter.

BUnder the protocols ospf hierarchy, add the traffic-engineering parameter.

CUnder the family inet labeled-unicast hierarchy, add the resolve-vpn parameter.

DUnder the protocols mpls hierarchy, add the traffic-engineering parameter

Answer : C

The resolve-vpn parameter is a BGP option that allows a router to resolve labeled VPN-IPv4 routes using unlabeled IPv4 routes received from another BGP peer with family inet labeled-unicast configured. This option enables interprovider VPNs without requiring MPLS labels between ASBRs or using VRF tables on ASBRs. In this scenario, you need to configure the resolve-vpn parameter under [edit protocols bgp group external family inet labeled-unicast] hierarchy level on both ASBRs.

Question 4

When using OSPFv3 for an IPv4 environment, which statement is correct?

AOSPFv3 only supports IPv4.

BOSPFv3 supports both IPv6 and IPv4, but not in the same routing instance.

COSPFv3 is not backward compatible with IPv4

DOSPFv3 supports IPv4 only on interfaces with family inet6 defined

Answer : D

Question 5

Exhibit

Referring to the exhibit, what do the brackets [ ] in the AS path identify?

AThey identify the local AS number associated with the AS path if configured on the router, or if AS path prepending is configured

BThey identify an AS set, which are groups of AS numbers in which the order does not matter

CThey identify that the autonomous system number is incomplete and awaiting more information from the BGP protocol.

DThey identify that a BGP confederation is being used to ensure that there are no routing loops.

Answer : B

The brackets [ ] in the AS path identify an AS set, which are groups of AS numbers in which the order does not matter. An AS set is used when BGP aggregates routes from different ASs into a single prefix. For example, if BGP aggregates routes 10.0.0.0/16 and 10.1.0.0/16 from AS 100 and AS 200, respectively, into a single prefix 10.0.0.0/15, then the AS path for this prefix will be [100 200]. An AS set reduces the length of the AS path and prevents routing loops.

Question 6

Exhibit

Referring to the exhibit, which statement is true?

AThe 10.101.1.0/24 route will be shared if the vrf-table-label parameter is configured.

BThe 10.101.1.0/24 route will only be shared if BGP is configured in the routing instance

CThe 10.101.1 0/24 route will be shared if there are other VRFs that use the same route target community

DThe 10.101.1.0/24 route will be shared if the auto-export parameter is configured

Answer : D

The auto-export parameter is a routing option that allows a routing instance to share routes with other routing instances or the master routing table. The auto-export parameter automatically exports routes from one routing instance to another based on the route target communities attached to the routes. In this scenario, the 10.101.1.0/24 route will be shared if the auto-export parameter is configured under [edit routing-options] hierarchy level.

Question 7

Which two statements are correct about the customer interface in an LDP-signaled pseudowire? (Choose two)

AWhen the encapsulation is vlan-ccc or extended-vlan-ccc, the configured VLAN tag is not included in the control plane LDP advertisement

BWhen the encapsulation is ethernet-ccc, only frames without a VLAN tag are accepted in the data plane

CWhen the encapsulation is vLan-ccc or extended-vlan-ccc, the configured VLAN tag is included in the control plane LDP advertisement

DWhen the encapsulation is ethemet-ccc, tagged and untagged frames are both accepted in the data plane.

Answer : C, D

The customer interface in an LDP-signaled pseudowire is the interface on the PE router that connects to the CE device. An LDP-signaled pseudowire is a type of Layer 2 circuit that uses LDP to establish a point-to-point connection between two PE routers over an MPLS network. The customer interface can have different encapsulation types depending on the type of traffic that is carried over the pseudowire. The encapsulation types are ethernet-ccc, vlan-ccc, extended-vlan-ccc, atm-ccc, frame-relay-ccc, ppp-ccc, cisco-hdlc-ccc, and tcc-ccc. Depending on the encapsulation type, the customer interface can accept or reject tagged or untagged frames in the data plane, and include or exclude VLAN tags in the control plane LDP advertisement. The following table summarizes the behavior of different encapsulation types:

Juniper JN0-664 Service Provider Routing and Switching, Professional Exam JNCIP-SP Exam Practice Test