Which QoS mechanism can help classify different kinds of Citrix traffic （print job versus real-time terminal control）？（）

When a BGP router is not capable of understanding 4-byte AS numbers， it will see 4-byte AS numbers as a special， reserved， 2-byte AS number in the AS path. Which 2-byte AS number is this reserved one？（）

Which three are needed to run VRF lite for IPv6 on a router？ （）

What is the STP root guard feature designed to prevent？（）

What are the "bound IP addresses" used for in LDP？（）

Two directly connected routers， R1 and R2， are both configured for OSPF graceful restart. R2 is able to switch packets in hardware， but R1 is not. If a network administrator logs on to R2 and performs a system reload， which will be the result？（）

Which router is doing LSA type 7 to type 5 translation，and why？（）

Which three statements are true about policing？ （）

For the following protocols， which one provides a mechanism to transparently intercept and redirect CIFS traffic from a client to a local Cisco Wida Area Application engine？（）

In which way can the IPv6 address of 2031：0000：130F：0000：0000：09C0：876A：130B be expressed most efficiently？（）