optimized transport structure
high port density
boundary definition
data encryption
local VLANs
route summaries
第1题：
Refer to the exhibit. A network technician is asked to design a small network with redundancy. The exhibit represents this design, with all hosts configured in the same VLAN. What conclusions can be made about this design?（）
A.The design will function as intended
B.Spanning-tree will need to be used.
C.The router will not accept the addressing scheme.
D.The connection between switches should be a trunk.
E.The router interfaces must be encapsulated with the 802.1Q protocol.
第2题：
Why do large OSPF networks use a hierarchical design？（）
第3题：
As the Ezonexam network administrator, you are required to have a firm understanding of the OSI model. Why does the data communication industry use the layered OSI reference model? (Choose two)
A．It enables equipment from different vendors to use the same electronic components, thus saving research and development funds
B．It encourages industry standardization by defining what functions occur at each layer of the model
C．It divides the network communication process into smaller and simpler components; thus aiding component development, design and troubleshooting
D．It provides a means by which changes in functionality in one layer require changes in other layers
E．It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers
第4题：
数据库领域中最常用的数据模型有四种，它们是（）。
第5题：
Why do large OSPF networks use a hierarchical design?（）
第6题：
What are three considerations when choosing the QoS model to deploy in a network？ （）
第7题：
Why do large OSPF networks use a hierarchical design？（）
第8题：
A.to confine network instability to single areas of the network.
B.to reduce the complexity of router configuration
C.to speed up convergence
D.to lower costs by replacing routers with distribution layer switches
E.to decrease latency by increasing bandwidth
F.to reduce routing overhead
第9题：
In the three-layer hierarchical network design model；what’s associated with the access layer？（）
第10题：
What layer of the TMN （telecommunications management network） model does CTM fit into？（）