The six-bit DiffServ Code Point value 101110₂ equals 46₁₀. RFC 3246 and Cisco QoS design guides define DSCP 46 as the Expedited Forwarding (EF) Per-Hop Behaviour, used for low-latency traffic such as VoIP RTP streams. Therefore, 101110 represents EF; the other code points map to different binary values.

B. CS3 is 011000₂ (decimal 24); does not match 101110.
C. AF41 is 100010₂ (decimal 34); does not match 101110.
D. AF31 is 011010₂ (decimal 26); does not match 101110.

1. IETF RFC 3246, “An Expedited Forwarding PHB,” Sec. 3, Table 1 – EF DSCP = 101110 (0x2E, 46).

2. IETF RFC 4594, “Configuration Guidelines for DiffServ,” Table 2 – EF PHB marked as 46 (101110).

3. Cisco Systems, “Enterprise QoS SRND,” Ch. 2 ‘DiffServ Values’, Table 2-3 – EF DSCP decimal 46 (binary 101110).

4. Cisco Press, “QoS for IP/MPLS,” 2nd ed., Ch. 4, p. 111 – lists EF as 101110.