Chapter 4 651
4
What layer of the OSI model closely relates to the ATM reference model?
The ATM physical layer closely relates to the physical layer (Layer 1) in the OSI model.
5
For each application listed, match the ATM Adaptation Layer best suited to it:
Voice _________________________________________________________________
AAL 1
SMDS_________________________________________________________________
AAL 2
Data __________________________________________________________________
AAL 3/4
______________________________________________________________________
AAL 5
Voice _________________________________________________________________
AAL 1
SMDS_________________________________________________________________
AAL 3/4
Data __________________________________________________________________
AAL 5
6
Name the four major components of ATM LANE.
LECS (LAN Emulation Configuration Server).
LEC (LAN Emulation Client).
LES (LAN Emulation Server).
BUS (Broadcast and Unknown Server).
7
What two LAN clients does ATM LANE provide emulation for?
Ethernet and Token Ring.
8
What two types of interfaces are described in the ATM model?
User Network Interface (UNI).
Network-to-Network Interface (NNI).
9
Name four alternative models for ATM internetworking.
Local Area Network Emulation (LANE).
A point-to-point data link.
A high-speed workgroup and backbone.
A router cluster backbone.
87200333.book Page 651 Wednesday, August 22, 2001 1:41 PM