单项选择题

Lafeyette Productions is looking for a new ISP that has improved availability， load balancing， andcatastrophe protection. Which type of ISP connectivity solution would be best？（）

A. single run
B. multi-homed
C. stub domain EBGP
D. direct BGP peering

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单项选择题

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.

多项选择题

Users of a site-to-site VPN are reporting performance problems. The VPN connection employsIPSec and GRE and traverses several Ethernet segments. The VPN packets are being fragmented as they traverse the links. What would be two methods to overcome this problem？（）

A. Employ path MTU discovery.
B. Set the MTU higher than 1500 bytes.
C. Turn off pre-fragmentation for IPSec.
D. Set the MTU value to 1400 bytes.

单项选择题

You are the Cisco Network Designer in Cisco.com. Which of these statements is true of clientlessend-user devices？（）

A. They do not receive unique IP addresses.
B. RADIUS or LDAP is required.
C. They are assigned addresses from the internal DHCP pool.
D. Their traffic appears to originate from the originating host network.