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JN0-351 Questions and Answers

Question # 6

Which two events cause a router to advertise a connected network to OSPF neighbors? (Choose two.)

A.

When an OSPF adjacency is established.

B.

When an interface has the OSPF passive option enabled.

C.

When a static route to the 224.0.0.6 address is created.

D.

When a static route to the 224.0.0.5 address is created.

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Question # 7

Exhibit

Your ISP is announcing a default route to both R1 and R2. You want your network routers to forward all Internet traffic through the R1 device

Which BGP attribute would you use?

A.

MED

B.

next-hop

C.

local preference

D.

origin

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Question # 8

You need to configure a LAG between your switches. In this scenario, which two statements are correct? (Choose two.)

A.

Duplex and speed settings are not required to match on both participating devices.

B.

Duplex and speed settings are required to match on both participating devices.

C.

Member links are not required to be contiguous ports.

D.

Member links are required to be contiguous ports.

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Question # 9

You are configuring an IS-IS IGP network and do not see the IS-IS adjacencies established. In this scenario, what are two reasons for this problem? (Choose two.)

A.

MTU is not at least 1492 bytes.

B.

IP subnets are not a /30 address.

C.

The Level 2 routers have mismatched areas.

D.

The lo0 interface is not included as an IS-IS interface.

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Question # 10

Which two types of tunnels are able to be created on all Junos devices? (Choose two.)

A.

STP

B.

GRE

C.

IP-IP

D.

IPsec

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Question # 11

Which two BGP attributes must be supported by all BGP implementations and must be included in every update? (Choose two.)

A.

AS path

B.

MED

C.

next hop

D.

community

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Question # 12

You are asked to create a new firewall filter to evaluate Layer 3 traffic that is being sent between VLANs. In this scenario, which two statements are correct? (Choose two.)

A.

You should create a family Ethernet-switching firewall filter with the appropriate match criteria and actions.

B.

You should apply the firewall filter to the appropriate VLAN.

C.

You should create a family inet firewall filter with the appropriate match criteria and actions.

D.

You should apply the firewall filter to the appropriate IRB interface.

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Question # 13

Exhibit

Referring to the exhibit, which statement is correct?

A.

The local device is using a bridge priority of 4k.

B.

The root bridge is using a bridge priority of 4k.

C.

The root bridge has not been elected for this RSTP topology.

D.

The local device is the root bridge for this RSTP topology.

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Question # 14

What are two characteristics of RSTP alternate ports? (Choose two.)

A.

RSTP alternate ports block traffic while receiving superior BPDUs from a neighboring switch.

B.

RSTP alternate ports provide an alternate lower cost path to the root bridge.

C.

RSTP alternate ports provide an alternate higher cost path to the root bridge.

D.

RSTP alternate ports are active ports used to forward frames toward the root bridge.

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Question # 15

You implemented the MAC address limit feature with the shutdown action on all interfaces on your switch.

In this scenario, which statement is correct when a violation occurs?

A.

By default, you must manually clear the violation for the interface to send and receive traffic again.

B.

By default, the violation will automatically be cleared after 300 seconds and the interface will resume sending and receiving traffic for all learned devices.

C.

By default, devices that are learned before the violation occurs are still allowed to send and receive traffic through the specific interface.

D.

By default, the interface will continue to send and receive traffic for all connected devices after a violation has occurred.

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Question # 16

Exhibit.

You have configured the four EX Series switches with RSTP, as shown in the exhibit. You discover that whenever a link between switches goes up or down, the switches take longer than expected for RSTP to converge, using the default settings.

In this scenario, which action would solve the delay in RSTP convergence?

A.

The hello-time must be increased.

B.

The force-version must be removed.

C.

The bridge priority for EX-4 must be set at 4000.

D.

The max-age must be increased to 20

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Question # 17

What are two reasons for creating multiple areas in OSPF? (Choose two.)

A.

to reduce the convergence time

B.

to increase the number of adjacencies in the backbone

C.

to increase the size of the LSDB

D.

to reduce LSA flooding across the network

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Question # 18

Which two statements correctly describe RSTP port roles? (Choose two.)

A.

The designated port forwards data to the downstream network segment or device.

B.

The backup port is used as a backup for the root port.

C.

The alternate port is a standby port for an edge port.

D.

The root port is responsible for forwarding data to the root bridge.

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Question # 19

Which statement is correct about graceful Routing Engine switchover (GRES)?

A.

The PFE restarts and the kernel and interface information is lost.

B.

GRES has a helper mode and a restarting mode.

C.

When combined with NSR, routing is preserved and the new master RE does not restart rpd.

D.

With no other high availability features enabled, routing is preserved and the new master RE does not restart rpd.

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