Go back to 300-070 - Implementing Cisco IP Telephony and Video, Part 1 (CIPTV1)

Question :-

By default, what value is voice traffic marked as on a Cisco Catalyst Switch?
DSCP EF value 46, Cos 5.
DSCP EF value 46, Cos 7.
DSCP CAS6 value 21, Cos 3.
DSCP AF21, Cos 5.

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