Juniper Networks Certified Internet Specialist SP (JNCIS-SP) v1.0

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Exam contains 480 questions

You are asked to redistribute routes into OSPF.
Which action accomplishes this task?

  • A. Create a redistribution policy and apply it as an export policy under the [edit protocols ospf area] hierarchy.
  • B. Create a redistribution policy and apply it as an import policy in the [edit protocols ospf] hierarchy.
  • C. Create a redistribution policy and apply it as an import or an export policy in the [edit protocols ospf] hierarchy.
  • D. Create a redistribution policy and apply it as an export policy in the [edit protocols ospf] hierarchy.


Answer : D

You are configuring OSPF on a Junos device; however, you have not configured a router ID.
What is the default behavior in this situation?

  • A. If the loopback is configured with a 127/8 address, it will be used.
  • B. If the loopback is not configured, it will use the interface with the highest IP address.
  • C. If the loopback is configured and does not have a usable address, the IP address associated with the first hardware interface is used.
  • D. If you configure a dedicated management address and include that interface in OSPF, it will be used as the router ID.


Answer : C

Which two statements correctly describe IS-IS adjacencies? (Choose two.)

  • A. Level 1 adjacencies can form in the same (intra) area only.
  • B. Level 2 adjacencies are formed between (inter) areas only.
  • C. Level 2 adjacencies can be established either interarea or intra-area.
  • D. Level 2 adjacencies can form within the same (intra) area only.


Answer : AC

Which IS-IS PDU is used to request a retransmission of a missing link-state packet?

  • A. the complete sequence number PDU
  • B. the partial sequence number PDU
  • C. a hello PDU with a request PDU TLV specifying the missing LSP
  • D. a hello PDU with a refresh PDU TLV requesting all LSPs


Answer : B

Which statement is true regarding the IS-IS designated intermediate system (DIS)?

  • A. The DIS function is used only on broadcast or multi-access networks.
  • B. The DIS function is used on both broadcast and point-to-point link types.
  • C. On a broadcast network, adjacencies are formed only between the non-DIS nodes and the DIS to help reduce adjacency overhead.
  • D. IS-IS supports a backup DIS mechanism to provide rapid failover in the event of a DIS failure.


Answer : A

Which three reasons would account for this issue? (Choose three.)

  • A. A lack of or a malformed ISO network entity title (NET) on the loopback interface would cause this issue.
  • B. The interface MTU might be less than 1492.
  • C. The IS-IS protocol on the loopback interface has not been enabled.
  • D. The area IDs might be matched and should be set differently.
  • E. An ISO NET might not be configured on the physical interface.


Answer : ABC

Which three statements are true regarding the IS-IS link-state database (LSDB)? (Choose three.)

  • A. An L1 router has a single database reflecting the connectivity of its area.
  • B. An L1 router often relies on a default route generated by attached routers to reach interarea destinations.
  • C. The Level 2 database contains only backbone area routes unless route leaking is configured.
  • D. Route leaking can be used to optimize Level 2 to Level 1 routing.
  • E. An attached router has at least two LSDBs: one for each Level 1 area and a single LSDB for the Level 2 backbone.


Answer : ABE

Which PDU type is sent by an IS-IS router when it detects that its link-state database is out of date?

  • A. hello
  • B. link state
  • C. complete sequence number
  • D. partial sequence number


Answer : D

What are two similarities between OSPF and IS-IS? (Choose two.)

  • A. Both use hello packets to form and maintain adjacencies.
  • B. Both use the Dijkstra algorithm to construct a shortest-path tree.
  • C. Both elect a designated router and a backup designated router.
  • D. Both have a built-in mechanism to provide address summarization between areas.


Answer : AB

Which three statements correctly describe IBGP and EBGP interaction? (Choose three.)

  • A. IBGP is used within an AS, whereas EBGP is used between two different ASs.
  • B. EBGP peering is normally loopback-based to provide tolerance for interface or link failures.
  • C. By default, EBGP updates the next-hop attribute, whereas IBGP does not.
  • D. IBGP speakers can re-advertise IBGP-learned or EBGP-learned routes to other IBGP speakers.
  • E. EBGP speakers can re-advertise IBGP-learned or EBGP-learned routes to other EBGP speakers.


Answer : ACE

Which two statements correctly describe how the AS path attribute is used by BGP? (Choose two.)

  • A. The AS path attribute is updated whenever an EBGP-learned route is re-advertised using IBGP.
  • B. The AS path attribute is updated in EBGP advertisements only and is the primary loop-avoidance mechanism for BGP.
  • C. When local preference is the same, the AS path attribute is a common tiebreaker, where paths with fewer AS hops are preferred.
  • D. When local preference is the same, the AS path attribute is a common tiebreaker, where paths with more AS hops are preferred.


Answer : BC

Which statement describes the role of local preference in the BGP route selection process?

  • A. Local preference is evaluated early in the BGP route selection process and results in the route with the highest numerical local preference being selected.
  • B. Local preference is evaluated early in the BGP route selection process and results in the route with the lowest numerical local preference being selected.
  • C. Local preference is used to break ties when all other received BGP attributes are otherwise equal.
  • D. Local preference is sent by an EBGP speaker to a neighboring AS in an attempt to influence how the remote peer's traffic will ingress into your network.


Answer : A

Which three BGP attributes are used for loop prevention? (Choose three.)

  • A. AS path
  • B. originator ID
  • C. next hop
  • D. cluster list
  • E. origin


Answer : ABD

You are attempting to influence return traffic into your autonomous system by preferring one router as an entry point.
Which two BGP attributes will affect this behavior? (Choose two.)

  • A. originator ID
  • B. local preference
  • C. AS path
  • D. MED


Answer : CD

Which three BGP attributes must be sent to EBGP peers? (Choose three.)

  • A. local preference
  • B. atomic aggregator
  • C. origin
  • D. next hop
  • E. AS path


Answer : CDE

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Exam contains 480 questions

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