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NEW QUESTION 1
Which two statements are true about the IRB interface? (Choose two.)
A. An IRB interface is a Layer 3 VLAN interface.
B. An IRB interface is a Layer 2 VLAN interface.
C. An IRB interface is used to route traffic between VLANs.
D. An IRB interface cannot be associated with any VLAN.
NEW QUESTION 2
You are currently defining a new OSPF area. The area must advertise external routes but should not receive external routes from another area. In this scenario, which type of area should you define?
D. totally stubby
NEW QUESTION 3
Which two values are used to generate a bridge ID when using STP? (Choose two.)
A. system MAC address
B. bridge priority
C. port identifier
D. loopback IP address
NEW QUESTION 4
Which three mechanisms are associated with the bridging process? (Choose three.)
NEW QUESTION 5
What information is included in the DHCP snooping database? (Choose two.)
A. client MAC address
B. DHCP server address
C. DHCP options
When DHCP snooping is enabled, the lease information from the server is used to create the DHCP snooping table, also known as the binding table. The table shows current IP-MAC bindings, as well as lease time, type of binding, names of associated VLANs, and associated interface.
NEW QUESTION 6
Which two statements are true about STP port states? (Choose two.)
A. In the listening state, the port forwards all data packets.
B. A port that has been administratively disabled under the STP protocol drops all BPDUs.
C. In the learning state, the port drops all data packets.
D. A port that has been administratively disabled under the STP protocol floods all BPDUs.
For option B: A port in the disabled state is manually isolated from the network. A port in the disabled state does not participate in frame forwarding or the operation of STP because a port in the disabled state is considered non-operational.
For option C: The learning state is a 15-second interval during which the bridge does not pass user data frames while the bridge is building its bridging table. As the bridge receives frames, it places the source MAC address and port of each frame into the bridging table. The learning state reduces the amount of flooding required when data forwarding begins.
NEW QUESTION 7
What would be used to combine multiple switches into a single management platform?
A. Redundant Trunk Groups
B. Virtual Chassis
C. Graceful Routing Engine Switchover
D. Virtual Router Redundancy Protocol
Many Juniper Networks EX Series switches support the Virtual Chassis flexible, scaling switch solution. You can connect individual switches together to form one unit and manage the unit as a single chassis.
NEW QUESTION 8
What is reviewed first in the BGP route selection process?
A. the peer with the lowest IP address
B. the route with an origin of incomplete
C. the path with no MED value
D. the next-hop resolution
NEW QUESTION 9
Which two statements are correct about redundant trunk groups on EX Series switches? (Choose two.)
A. Layer 2 control traffic is permitted on the secondary link.
B. If the active link fails, then the secondary link automatically takes over.
C. Redundant trunk groups load balance traffic across two designated uplink interfaces.
D. Redundant trunk groups use spanning tree to provide loop-free redundant uplinks.
For option A: While data traffic is blocked on the secondary link, Layer 2 control traffic is still permitted. For example, an LLDP session can be run between two switches on the secondary link.
For option B: The redundant trunk group is configured on the access switch and contains two links: a primary or active link, and a secondary link. If the active link fails, the secondary link automatically starts forwarding data traffic without waiting for normal spanning-tree protocol convergence.
NEW QUESTION 10
You notice that there are currently two MAC addresses associated with a single access port in the bridge table on one of your EX Series switches. What are two explanations for this behavior? (Choose two.)
A. The access port connects to an IP phone which connects to a host device.
B. The native VLAN feature has been associated with the access port.
C. The mac-move-limit feature has been disabled on the access port.
D. The access port connects to multiple hosts through a rogue device.
MAC move limiting detects MAC movement and MAC spoofing on access interfaces. You enable this feature on VLANs.
NEW QUESTION 11
Which connection method do OSPF routers use to communicate with each other?
A. IP protocol number 89
B. TCP port 179
C. UDP port 179
D. IP protocol number 6
NEW QUESTION 12
You configured a GRE tunnel that traverses a path using default MTU settings. You want t o ensure that packets are not dropped or fragmented. In this scenario, what is the maximum packet size that would traverse the GRE tunnel?
The default Ethernet MTU is 1500. There is a 24 byte GRE overhead, so there remain 1476 bytes for the data packet.
NEW QUESTION 13
What is the default route preference for BGP?
BGP has the default preference of 170.
NEW QUESTION 14
How many bytes of overhead does an IP-IP tunnel add to a packet?
A. 24 bytes
B. 28 bytes
C. 20 bytes
D. 14 bytes
Difference Between GRE and IP-IP Tunnel. Generic Routing Encapsulation (GRE) and IP-in-IP (IPIP) are two rather similar tunneling mechanisms which are often confused. In terms of less overhead, the GRE header is 24 bytes and an IP header is 20 bytes.
NEW QUESTION 15
What types of authentication are supported in Junos for OSPF?
A. Simple password
B. MD5 checksum
C. Hitless key chain of MD5 keys/checksums
D. All of the above
NEW QUESTION 16
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