VID AAL in ATM (10 Points) The IP datagram for a TCP ACK message is 42 Bytes (2 bytes data +20 bytes of TCP header 20 bytes of IP header). Assume this ACK is crossing an ATM network How many ATM cells will it take to carry the ACK if a) the AAL3/4 is used? b) the AAL 5 is use? Figure 15 AAL3/4 cs SAll heade 18.18 Figure 16 AALS cs SAR 48 bytes 48 bytes 48 byes 5 48 bytes 5 48 bytes UU Channel identifer CPt Common part identifer L Length 12 816 CRC: Eror detector VID AAL in ATM (10 Points) The IP datagram for a TCP ACK message is 42 Bytes (2 bytes data +20 bytes of TCP header 20 bytes of IP header). Assume this ACK is crossing an ATM network How many ATM cells will it take to carry the ACK if a) the AAL3/4 is used? b) the AAL 5 is use? Figure 15 AAL3/4 cs SAll heade 18.18 Figure 16 AALS cs SAR 48 bytes 48 bytes 48 byes 5 48 bytes 5 48 bytes UU Channel identifer CPt Common part identifer L Length 12 816 CRC: Eror detector