Free JN0-351 Sample Questions — Enterprise Routing and Switching, Specialist (JNCIS-ENT)

You are combining two existing interfaces into a single LAG interface, but you do not see the LAG interface being created. Which two actions are required to solve this problem? (Choose two.)

• A. Ensure that the first LAG interface name is ae1
• B. Ensure that LAG is enabled on the chassis
• C. Ensure that LAG is enabled on each member interface
• D. Ensure that the first LAG interface name is ae0

You are troubleshooting a BGP routing issue between your network and a customer router and are reviewing the BGP routing policies. Which two statements are correct in this scenario? (Choose two.)

• A. Export policies are applied to routes in the RIB-In table
• B. Import policies are applied to routes in the RIB-Local table
• C. Import policies are applied after the RIB-In table
• D. Export policies are applied after the RIB-Local table

You enable persistent MAC learning on your Juniper switch. In this scenario, which statement is correct?

• A. You can only enable persistent MAC learning on an interface on which 802.1x authentication is configured
• B. You can enable persistent MAC learning on an interface where MAC learning is disabled
• C. You can enable persistent MAC learning on an interface that is part of a redundant trunk group
• D. You can only enable persistent MAC learning on an interface in access mode

Which three actions are required for filter-based forwarding? (Choose three.)

• A. Create routing policies for source addresses
• B. Create routing instances for individual destinations
• C. Create a firewall filter to match desired traffic
• D. Create a forwarding option for load balancing
• E. Create a RIB group for next-hop entries

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

Which two statements are true about the default VLAN on Juniper switches? (Choose two.)

• A. The default VLAN is set to a VLAN ID of 1 by default
• B. The default VLAN ID is not assigned to any interface
• C. The default VLAN ID is not visible
• D. The default VLAN ID can be changed

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.)

• A. set routing-instances mgmt_junos interface ge-0/0/0
• B. set routing-instances mgmt_junos interface em1
• C. set system management-instance
• D. set routing-instances mgmt_junos

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.)

• A. IBGP updates the next-hop attribute to ensure reachability within an AS
• B. IBGP peers advertise routes received from EBGP peers to other IBGP peers
• C. IBGP peers advertise routes received from IBGP peers to other IBGP peers
• D. EBGP peers advertise routes received from IBGP peers to other EBGP peers

In RSTP, which three port roles are associated with the discarding state? (Choose three.)

• A. root
• B. backup
• C. alternate
• D. disabled
• E. designated

You are using tunnels in your network. It is important that the routes be specific enough to ensure that the tunnels are established. You need to prevent a route that is new to the network from being used. In this scenario, which type of route should be used?

• A. multicast
• B. aggregate
• C. static
• D. anycast

You are asked to connect an IP phone and a user computer using the same interface on an EX Series switch. The traffic from the computer does not use a VLAN tag, whereas the traffic from the IP phone uses a VLAN tag. Which feature enables the interface to receive both types of traffic?

• A. native VLAN
• B. DHCP snooping
• C. MAC limiting
• D. voice VLAN

You deployed a new EX Series switch with DHCP snooping enabled and you do not see any entries in the snooping databases for an interface. Which two Juniper configurations for that interface caused this issue? (Choose two.)

• A. The interface is configured as a trunk port
• B. MAC limiting is enabled on the interface
• C. Dynamic ARP inspection is enabled on the interface
• D. The interface is configured as a disabled port

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

• A. blocking
• B. flooding
• C. learning
• D. listening

What is the default hello interval on an OSPF interface?

• A. 10 seconds
• B. 20 seconds
• C. 30 seconds
• D. 60 seconds

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?

• A. aggregate route
• B. static route using the resolve feature
• C. generate route
• D. static route using qualified next hops

Which statement is correct about the storm control feature?

• A. The storm control feature is enabled in the factory-default configuration on EX Series switches
• B. The storm control feature requires a special license on EX Series switches
• C. The storm control feature is not supported on aggregate Ethernet interfaces
• D. The storm control configuration only applies to traffic being sent between the forwarding and control plane

You are configuring a router as a new Level 1 router in an existing Level 1 area. The NET address for an existing Level 1 router is 49.0011.1111.2222.3333.00. The new router must form a Level 1 adjacency with the existing router. What should be the area ID in this scenario?

• A. 49
• B. 00
• C. 3333
• D. 0011

Which two statements about BGP facilitate the prevention of routing loops between two autonomous systems? (Choose two.)

• A. EBGP routers will append their AS number when advertising routes to their neighbors
• B. EBGP routers will only accept routes that contain their own AS number in the AS_PATH
• C. EBGP routers will drop routes that contain their own AS number in the AS_PATH
• D. EBGP routers will prepend their AS number when advertising routes to their neighbors

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

Which two statements about MACsec are true? (Choose two.)

• A. MACsec functions on point-to-multipoint connections
• B. MACsec is an IEEE standard
• C. MACsec functions on point-to-point connections
• D. MACsec does not provide data integrity