JN0-351 practice questions 51–60

1. Question 51 · 105 in bank

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   You are an operator for a network running IS-IS. Two routers are failing to form an adjacency. What are two reasons for this problem? (Choose two.)

   • AThere are mismatched router IDs on the L2 routers.
   • BThere is no configured ISO address on any IS-IS interface.
   • CThere is a mismatched area ID between the L2 routers.
   • DThe family iso configuration is missing from the adjacency interface.

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   Answer: BD

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2. Question 52 · 105 in bank

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   You have DHCP snooping enabled but no entries are automatically created in the snooping database for an interface on your EX Series switch. What are two reasons for the problem? (Choose two.)

   • AThe device that is connected to the interface has performed a DHCPRELEASE.
   • BMAC limiting is enabled on the interface.
   • CThe device that is connected to the interface has a static IP address.
   • DDynamic ARP inspection is enabled on the interface.

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   Answer: AC

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3. Question 53 · 105 in bank

   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?

   • ABy default, you must manually clear the violation for the interface to send and receive traffic again.
   • BBy default, the violation will automatically be cleared after 300 seconds and the interface will resume sending and receiving traffic for all learned devices.
   • CBy default, devices that are learned before the violation occurs are still allowed to send and receive traffic through the specific interface.
   • DBy default, the interface will continue to send and receive traffic for all connected devices after a violation has occurred.

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   Answer: A

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4. Question 54 · 105 in bank

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   An update to your organization's network security requirements document requires management traffic to be isolated in a non-default routing-instance. You want to implement this requirement on your Junos-based devices. Which two commands enable this behavior? (Choose two.)

   • Aset routing-instances mgmt_junos interface ge-0/0/0
   • Bset routing-instances mgmt_junos interface em1
   • Cset system management-instance
   • Dset routing-instances mgmt_junos

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   Answer: CD

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5. Question 55 · 105 in bank

   

   Referring to the exhibit, which statement is correct?

   • AThe local device is using a bridge priority of 4k.
   • BThe root bridge is using a bridge priority of 4k.
   • CThe root bridge has not been elected for this RSTP topology
   • DThe local device is the root bridge for this RSTP topology.

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   Answer: B

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6. Question 56 · 105 in bank

   Which statement about aggregate routes is correct?

   • AAggregate routes can only be used for static routing but not for dynamic routing protocols.
   • BAggregate routes are automatically generated for all of the subnets in a routing table.
   • CAggregate routes are always preferred over more specific routes, even when the specific routes have a better path.
   • DAggregate routes are used for advertising summarized network prefixes.

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   Answer: D

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7. Question 57 · 105 in bank

   You are receiving multiple BGP routes from an upstream neighbor and only want to advertise a single summarized prefix to your internal OSPF neighbors. This route should only be advertised when you are receiving these BGP routes from this neighbor. In this scenario, which type of route should you create?

   • Aaggregate route
   • Bstatic route using the resolve feature
   • Cgenerate route
   • Dstatic route using qualified next hops

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   Answer: C

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8. Question 58 · 105 in bank

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   Referring to the exhibit, which two configuration changes must you apply for packets to reach from R1 to R3 using IS-IS? (Choose two.)

   • AOn R1, enable Level 1 on the ge-0/0/1 interface.
   • BOn R3 disable Level 2 on the ge-0/0/4 interface.
   • COn R1, disable Level 2 on the ge-0/0/1 interface.
   • DOn R3 enable Level 1 on the ge-0/0/4 interface.

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   Answer: AD

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9. Question 59 · 105 in bank

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   You are a network operator who wants to add a second ISP connection and remove the default route to the existing ISP. You decide to deploy the BGP protocol in the network. What two statements are correct in this scenario? (Choose two.)

   • AIBGP updates the next-hop attribute to ensure reachability within an AS.
   • BIBGP peers advertise routes received from EBGP peers to other IBGP peers.
   • CIBGP peers advertise routes received from IBGP peers to other IBGP peers.
   • DEBGP peers advertise routes received from IBGP peers to other EBGP peers.

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   Answer: BD

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10. Question 60 · 105 in bank

    

    Which command displays the output shown in the exhibit?

    • Ashow route forwarding-table
    • Bshow ethernet-switching table
    • Cshow ethernet-switching table extensive
    • Dshow route forwarding-table family ethernet-switching

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    Answer: D

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JN0-351 practice, question 51. 105 questions available.