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Exhibit
Referring to the exhibit, what will happen to untagged frames?
In the exhibit, the interface is configured with the native-vlan-id 20 parameter. This means that any untagged frames arriving on this interface will be associated with VLAN 20. The native VLAN serves as the default VLAN for untagged frames on a trunk port.
Juniper Networks documentation on VLANs: Configuring VLANs
Exhibit
You are asked to configure the OSPF environment to prevent the DRother routers from participating in DR/BDR election.
Referring to the exhibit, which command will accomplish this task?
To prevent a router from participating in the OSPF designated router (DR) and backup designated router (BDR) election process, you set the OSPF priority to 0 on the interfaces of that router. This tells OSPF that the router on those interfaces is not to be considered for election as either DR or BDR, effectively making them DRother routers. The exhibit indicates that this is the desired configuration, and therefore the correct command to issue on the Juniper device would be to set the priority to 0 on the relevant interfaces.
By default, which two statements are correct about switch ports on a Junos device? (Choose two.)
On a Junos device, trunk ports are configured to receive and transmit tagged traffic only, while access ports are configured to receive and transmit untagged traffic. Reference::
Understanding Access and Trunk Interfaces, Juniper Networks Documentation
VLANs and Trunking, Juniper Networks Documentation
Click the Exhibit button.
Referring to the exhibit, from which device(s) does R3 learn about Route X?
R2 can not forward IBGP learned routes to another IBGP neighbor correct
R3 will learn about Route X from R2 only. R1 is in a separate AS and Route X is advertised to R2 through eBGP. R2 will then advertise the route to R3 using iBGP. R3 cannot learn routes directly from another AS without having a direct eBGP session with that AS. Reference::
BGP Route Propagation and Selection, Juniper Networks Documentation
Understanding iBGP and eBGP Route Distribution, Juniper Networks Documentation
Exhibit
Referring to the exhibit, which two statements are correct? (Choose two.)
You can see area 0.0.0.1 set for one interface and area 0.0.0.0 for the other interface. This means the router communicates in the backbone and area 1, thus it is an ABR.
Default hello timer and dead intervals are configured
hello-interval---Specifies the length of time, in seconds, before the routing device sends a hello packet out of an interface. By default, the routing device sends hello packets every 10 seconds. The range is from 1 through 255 seconds.
dead-interval---Specifies the length of time, in seconds, that the routing device waits before declaring that a neighboring routing device is unavailable. This is an interval during which the routing device receives no hello packets from the neighbor. By default, the routing device waits 40 seconds (four times the hello interval). The range is 1 through 65,535 seconds.
C. The R2 device is shown as having interfaces in two different OSPF areas (Area 0 and another area not specified), which makes it an Area Border Router (ABR). D. The OSPF hello and dead intervals are set to their default values of 10 and 40 seconds, respectively. Reference::
Understanding OSPF Areas and ABRs, Juniper TechLibrary
OSPF Configuration Guide, Juniper TechLibrary
