Juniper JN0-351 (JNCIS-ENT) Sample Questions

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

• On R1, enable Level 1 on the ge-0/0/1 interface.

• On R3 disable Level 2 on the ge-0/0/4 interface.

• On R1, disable Level 2 on the ge-0/0/1 interface.

• On R3 enable Level 1 on the ge-0/0/4 interface

What is the default MAC age-out timer on an EX Series switch?

• 30 minutes

• 30 seconds

• 300 minutes

• 300 seconds

You are an operator for a network running 1S-IS. Two routers are failing to form an adjacency. What are two reasons for this problem? (Choose two.)

• There are mismatched router IDs on the L2 routers.

• There is no configured ISO address on any IS-IS interface.

• There is a mismatched area ID between the L2 routers.

• The family iso configuration is missing from the adjacency interface

Which two mechanisms are part of building and maintaining a Layer 2 bridge table? (Choose two.)

• blocking

• flooding

• learning

• listening

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?

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

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

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

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

Which two statements are correct about using firewall filters on EX Series switches? (Choose two.)

• You can deploy only stateless firewall filters on an EX Series switch.

• You can only apply firewall filters to Layer 2 traffic on an EX Series switch.

• You can apply firewall filters to both Layer 2 and Layer 3 traffic on an EX Series switch.

• You can deploy both stateless and stateful firewall filters on an EX Series switch

Which statement is correct about the IS-IS ISO NET address?

• An ISO NET address defined with a system ID of 0000.0000.0000 must be selected as the DIS.

• An ISO NET address must be unique for each device in the network.

• You can only define a single ISO NET address per device.

• The Area ID must match on all devices within a L2 area

Which statement is correct about controlling the routes installed by a RIB group?

• An import policy is applied to the RIB group.

• Only routes in the last table are installed.

• A firewall filter must be configured to install routes in the RIB groups.

• An export policy is applied to the RIB group

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.)

• The device that is connected to the interface has performed a DHCPRELEASE.

• MAC limiting is enabled on the interface.

• The device that is connected to the interface has a static IP address.

• Dynamic ARP inspection is enabled on the interface

Exhibit You have configured a GRE tunnel. To reduce the risk of dropping traffic, you have configured a keepalive OAM probe to monitor the state of the tunnel; however, traffic drops are still occurring. Referring to the exhibit, what is the problem?