| Exam 642-887 | Question id=3248 | QOS in a Service Provider IP NGN Environment |
A DSCP value of 41 in decimal corresponds to which IP precedence value?
| A. |
3 Flash | |
| B. |
4 Flash Override | |
| C. |
5 Critical | |
| D. |
6 Internet Control | |
| E. |
7 Network Control |
INT(41/8)
The AF behavior group defines four separate AF classes with Class 4 having the highest priority. Within each class, packets are given a drop precedence (high, medium or low). The combination of classes and drop precedence yields twelve separate DSCP encodings from AF11 through AF43 (see table)
Assured Forwarding (AF) Behavior Group
Class 1 (lowest) Class 2 Class 3 Class 4 (highest)
Low Drop AF11(DSCP 10) AF21 (DSCP 18) AF31 (DSCP 26) AF41 (DSCP 34)
Med Drop AF12(DSCP 12) AF22 (DSCP 20) AF32 (DSCP 28) AF42 (DSCP 36)
High Drop AF13(DSCP 14) AF23 (DSCP 22) AF33 (DSCP 30) AF43 (DSCP 38)