Which of these about logical units is true?

Users are unable to access resources in the 172.23.14.0/24 subnet.
inet.0: 4 destinations, 4 routes (4 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
172.23.10.0/24 *[Direct/0] 21:59:56
>via ge-0/0/6.0
172.23.10.100/32 *[Local/0] 22:00:10
Local via ge-0/0/6.0
172.23.12.0/24 *[Static/5] 00:01:36
>to 172.23.10.1 via ge-0/0/6.0
172.23.15.0/24 *[Static/5] 00:01:36
>to 172.23.10.1 via ge-0/0/6.0
Referring to the exhibit, which two actions would solve this problem?

What is the maximum number of rollback files a Junos device can store?

What is a function of the PFE?

Which three statements describe the User Datagram Protocol (UDP)? (Choose three.)