單項選擇題You are the Cisco Network Designer. Which is not major scaling， sizing， and performance consideration for an IPsec design？（）

A. connection speed
B. number of remote sites
C. features to be supported
D. types of devices at the remote site


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1.多項選擇題Which three objectives would be met by designing Layer 3 switching in the Campus Backbone of amedium size installation？ （）

A. scale to a large size
B. increase router peering
C. provide a flexible topology with no spanning tree loops
D. control broadcasts in the backbone

2.單項選擇題To securely transport EIGRP traffic， a network administrator will build VPNs between sites. Whatis the best method to accomplish the transport of EIGRP traffic？（）

A. IPSec in tunnel mode
B. IPSec in transport mode
C. GRE with IPSec in transport mode
D. GRE with IPSec in tunnel mode

3.單項選擇題It’s a configuration that experts are calling a "firewall sandwich，" with the second firewall providinga second level of load balancing after traffic down. What is meant by the term "firewall sandwich"？（）

A. single layer of firewalling
B. multiple layers of firewalling
C. firewall connections in either an active or standby state
D. an architecture in which all traffic between firewalls goes through application-specific servers

5.單項選擇題You are the Cisco Network Designer in Cisco.com. Which statement is correct regarding NBARand NetFlow？（）

A. NBAR examines data in Layers 1 and 4.
B. NBAR examines data in Layers 3 and 4.
C. NetFlow examines data in Layers 3 and 4.
D. NBAR examines data in Layers 2 through 4.