Questions for the JN0-349 were updated on : Sep 01 ,2024
What are two benefits of 802.3ad link aggregation? (Choose two)
A, D
Explanation:
Aggregating multiple links between physical interfaces creates a single logical point-to-point trunk
link or a LAG. The LAG balances traffic across the member links within an aggregated Ethernet bundle
and effectively increases the uplink bandwidth. Another advantage of link aggregation is increased
availability, because the LAG is composed of multiple member links. If one member link fails, the LAG
continues
to
carry
traffic
over
the
remaining
links.
https://www.juniper.net/documentation/us/en/software/junos/interfaces-ethernet-switches/topics/topic-map/switches-interface-aggregated.html
Click the Exhibit button.
Your router is configured to peer with your ISPs router using BGP. You can only control your BGP
configuration.
Which address families are negotiated between the two BGP peers shown in the exhibit?
B
Which statement is true about IP-IP tunnels?
B
Explanation:
Routing is based on destination, not source; Only the route for the destination tunnel endpoint is
necessary
for
each
packet.
If youre thinking about a lab environment with a single intermediary device, its incidental that it
will have a route for both tunnel endpoint IPs. Only the relevant destination will be considered with
each packet it processes.
You have a conference room with an open network port that is used by employees to connect to the
network. You are concerned about rogue switches being connected to this port
Which two features should you enable on your switch to limit access to this port? (Choose two.)
A, B
Which two port security features use the DHCP snooping database for additional port security?
(Choose two.)
A, C
You want to configure Layer 2 services over an IP-based tunneling mechanism between two sites.
Which configuration statement is required to accomplish this task?
A
You are enabling dynamic ARP inspection on an EX4300 switch Which service is enabled by default in
this scenario?
A
Which two routers belong to the 172.16.0.0/22 aggregate route? (Choose two.)
B,D
What are two reasons for configuring more than one VLAN on a switch? (Choose two.)
A, D
Which two statements are correct regarding the root bridge election process when using ST P?
(Choose two )
A, C
What are two characteristics of OSPF ABRs? (Choose two.)
A, D
Explanation:
Area border router (ABR): An OSPF router with links in two areas, the ABR is responsible for
connecting OSPF areas to the backbone. It transmits network information between the backbone
and other areas.
Exhibit.
Referring to the exhibit, which configuration will force traffic to always use ae0.0 as long as it is
active?
C
Explanation:
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/redundant-trunk-groups.html
1. set protocols rstp disable
2. set redundant-trunk-group group name interface interface-name primary
3. set redundant-trunk-group group name interface interface-name
4. option: set redundant-trunk-group group name preempt-cutover-timer seconds
Rapid Spanning Tree Protocol (RSTP) is enabled by default on EX Series switches to create a loop-
free topology, but an interface is not allowed to be in both a redundant trunk group and in a
spanning-tree protocol topology at the same time.
Exhibit.
Click the Exhibit button Referring to the exhibit, what will be the IS-IS adjacency result of the
configurations?
C
Which two sequences correctly describe the processing order of firewall filters on an EX Series
switch? (Choose two.)
BD
In which two STP states is a port active and a MAC address learned? (Choose two.)
B, D