Cisco
350-029 · Question #22
Which two Any Transport over MPLS (AToM) traffic encapsulations require the use of a control word? (Choose two)
The correct answer is B. ATM AAL5 E. Frame Relay. The AToM header is 4 bytes (control word). The control word is optional for Ethernet, PPP, HDLC, and cell relay transport types. However, the control word is required for Frame Relay, and ATM AAL5 transport types.
Core Technologies
Question
Which two Any Transport over MPLS (AToM) traffic encapsulations require the use of a control word? (Choose two)
Options
- AHDLC
- BATM AAL5
- CPPP
- DEthernet VLAN
- EFrame Relay
How the community answered
(26 responses)- A12% (3)
- B81% (21)
- C4% (1)
- D4% (1)
Explanation
The AToM header is 4 bytes (control word). The control word is optional for Ethernet, PPP, HDLC, and cell relay transport types. However, the control word is required for Frame Relay, and ATM AAL5 transport types.
Topics
#AToM#control word#pseudowire encapsulation#MPLS
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