You are using the ping command to troubleshoot a suspected MTU problem

Refer to the Exhibit.
— Exhibit –user@R1> show configuration interfaces
xe-1/1/0 {
unit 0 {
family inet {

address 17.1.1.1/24;
}
family mpls;
}
}
user@R1> ping 17.1.1.2 size 1473 do-not-fragment
PING 17.1.1.2 (17.1.1.2): 1473 data bytes
ping: sendto: Message too long
ping: sendto: Message too long
ping: sendto: Message too long
user@R1> ping 17.1.1.2 logical-system R1 size 1472 do-not-fragment
PING 17.1.1.2 (17.1.1.2): 1472 data bytes
1480 bytes from 17.1.1.2: icmp_seq=0 ttl=64 time=0.933 ms
1480 bytes from 17.1.1.2: icmp_seq=1 ttl=64 time=0.838 ms
1480 bytes from 17.1.1.2: icmp_seq=2 ttl=64 time=4.688 ms
— Exhibit –You are using the ping command to troubleshoot a suspected MTU problem.

A.
Referring to the exhibit, which two statements are true? (Choose two.)
The first ping fails because the do-not-fragment option is set.

B.
The first ping fails because the Junos OS takes into account Layer 2 headers while calculating
the MTU.

C.
The first ping fails because the Junos OS takes into account ICMP and IP headers while
calculating the MTU.

D.
The first ping fails because the Junos OS takes into account the CRC header while calculating
the MTU.

Explanation: