Service Provider, Specialist (JNCIS-SP) JN0-360 Exam Questions with VCE and PDF for Free Download from PassLeader (Question 181 – Question 210)

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QUESTION 181
Which OSPF LSA type is sent from the ABR to describe an ASBR that is in an area to which it is connected?

A.    Type 7
B.    Type 5
C.    Type 4
D.    Type 3

Answer: C

QUESTION 182
What are two functions of an OSPF BDR? (Choose two.)

A.    The BDR advertises link-state information with all other OSPF routers on the segment.
B.    The BDR forms an adjacency with all other OSPF routers on the segment.
C.    The BDR is ready to assume the role of the DR device if it fails.
D.    The BDR functions can be distributed to the DR device on the segment.

Answer: BC

QUESTION 183
Which OSPF adjacency state is reached when a hello packet has been sent, but bidirectional communication has not been established?

A.    Down
B.    Init
C.    2-way
D.    ExStart

Answer: B

QUESTION 184
What is a reason for an OSPF router to display a designated router ID of 0.0.0.0?

A.    The MTU is mismatched.
B.    The subnet mask is mismatched.
C.    The interface type is point-to-point.
D.    The interface type is broadcast.

Answer: C

QUESTION 185
Which two OSPF areas allow external routes? (Choose two.)

A.    backbone area
B.    not-so-stubby area
C.    stub area
D.    totally stubby area

Answer: AB

QUESTION 186
Which LSA packet types are originated only by an OSPF ABR router?

A.    Type 2 and Type 3
B.    Type 3 and Type 4
C.    Type 5 and Type 6
D.    Type 6 and Type 7

Answer: B

QUESTION 187
In an OSPF environment, which two configuration parameters are used to determine which router is the DR? (Choose two.)

A.    the router with the highest priority
B.    the router with the lowest priority
C.    the router with the highest RID
D.    the router with the lowest RID

Answer: AC

QUESTION 188
You have entered the show ospf route command and see routes with a metric type of EXT2. What does this indicate?

A.    These routes are OSPF interarea routes.
B.    These routes have been redistributed into OSPF and are using a Type 2 metric.
C.    These routes are preferred over the same routes with an EXT1 metric.
D.    These routes are OSPF intra-area routes.

Answer: B

QUESTION 189
You want to verify the frequency and type of SPF calculations on your Junos device. Which command displays this information?

A.    show ospf database | match log
B.    show spf log
C.    show ospf log
D.    show ospf statistics

Answer: C

QUESTION 190
You are troubleshooting an OSPF adjacency that is stuck in the ExStart state. What would be the correct step to resolve the problem?

A.    Look for a mismatched IP subnet or mask.
B.    Determine whether the neighbor is a DR-Other.
C.    Determine whether the hello and dead intervals are the same on both sides.
D.    Review the MTU settings to ensure that they match.

Answer: D

QUESTION 191
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

QUESTION 192
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

QUESTION 193
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

QUESTION 194
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

QUESTION 195
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

QUESTION 196
You want to establish an IS-IS Level 1 adjacency between two routers. The adjacency is not forming. 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

QUESTION 197
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

QUESTION 198
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

QUESTION 199
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

QUESTION 200
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

QUESTION 201
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

QUESTION 202
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

QUESTION 203
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

QUESTION 204
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

QUESTION 205
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

QUESTION 206
What is a valid BGP neighbor state?

A.    OpenEstablished
B.    OpenConnect
C.    OpenConfirm
D.    OpenActive

Answer: C

QUESTION 207
Which statement is true regarding BGP?

A.    Using BGP within your AS eliminates the need for an IGP.
B.    EBGP sessions have a TTL value of 64 by default.
C.    If an EBGP peer is more than one hop away, a multihop BGP session must be established.
D.    BGP devices require a direct connection to peer with each other.

Answer: C

QUESTION 208
A route to the same destination is received from two different BGP sources. Which criterion is considered first to determine the active BGP route?

A.    cluster length
B.    AS-path length
C.    lowest RID
D.    local preference

Answer: D

QUESTION 209
You are troubleshooting a BGP-learned prefix that is not being installed in the routing table. Which command shows you the missing route?

A.    show route advertising-protocol bgp
B.    show route state
C.    show route hidden extensive
D.    show bgp summary

Answer: C

QUESTION 210
You are asked to configure a new external BGP connection to a peer’s loopback interface. You verify that the peer’s loopback interface is reachable, but the BGP connection remains in Idle state. Which BGP parameter is required to establish the BGP connection?

A.    multipath
B.    multihop
C.    as-override
D.    advertise-inactive

Answer: B


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